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| 461. | Chen, Wei; Liang, Suzhe; Löhrer, Franziska C; Schaper, Simon J; Li, Nian; Cao, Wei; Kreuzer, Lucas P; Liu, Haochen; Tang, Haodong; Körstgens, Volker; Schwartzkopf, Matthias; Wang, Kai; Sun, Xiao Wei; Roth, Stephan V; Müller-Buschbaum, Peter: In situ Grazing-Incidence Small-Angle X-ray Scattering Observation of Gold Sputter Deposition on a PbS Quantum Dot Solid. In: ACS Applied Materials & Interfaces, 12 (41), pp. 46942-46952, 2020, (PMID: 32941012). (Type: Journal Article | Abstract | Links | BibTeX) @article{Chen2020, title = {In situ Grazing-Incidence Small-Angle X-ray Scattering Observation of Gold Sputter Deposition on a PbS Quantum Dot Solid}, author = {Wei Chen and Suzhe Liang and Franziska C Löhrer and Simon J Schaper and Nian Li and Wei Cao and Lucas P Kreuzer and Haochen Liu and Haodong Tang and Volker Körstgens and Matthias Schwartzkopf and Kai Wang and Xiao Wei Sun and Stephan V Roth and Peter Müller-Buschbaum}, url = {https://doi.org/10.1021/acsami.0c12732}, doi = {10.1021/acsami.0c12732}, year = {2020}, date = {2020-01-01}, journal = {ACS Applied Materials & Interfaces}, volume = {12}, number = {41}, pages = {46942-46952}, abstract = {For PbS quantum dot (QD)-based optoelectronic devices, gold is the most frequently used electrode material. In most device architectures, gold is in direct contact with the QD solid. To better understand the formation of the interface between gold and a close-packed QD layer at an early stage, in situ grazing-incidence small-angle X-ray scattering is used to observe the gold sputter deposition on a 1,2-ethanedithiol (EDT)-treated PbS QD solid. In the kinetics of gold layer growth, the forming and merging of small gold clusters (radius less than 1.6 nm) are observed at the early stages. The thereby formed medium gold clusters (radius between 1.9–2.4 nm) are influenced by the QDs’ templating effect. Furthermore, simulations suggest that the medium gold clusters grow preferably along the QDs’ boundaries rather than as a top coating of the QDs. When the thickness of the sputtered gold layer reaches 6.25 nm, larger gold clusters with a radius of 5.3 nm form. Simultaneously, a percolation layer with a thickness of 2.5 nm is established underneath the gold clusters. This fundamental understanding of the QD–gold interface formation will help to control the implementation of sputtered gold electrodes on close-packed QD solids in device manufacturing processes.}, note = {PMID: 32941012}, keywords = {}, pubstate = {published}, tppubtype = {article} } For PbS quantum dot (QD)-based optoelectronic devices, gold is the most frequently used electrode material. In most device architectures, gold is in direct contact with the QD solid. To better understand the formation of the interface between gold and a close-packed QD layer at an early stage, in situ grazing-incidence small-angle X-ray scattering is used to observe the gold sputter deposition on a 1,2-ethanedithiol (EDT)-treated PbS QD solid. In the kinetics of gold layer growth, the forming and merging of small gold clusters (radius less than 1.6 nm) are observed at the early stages. The thereby formed medium gold clusters (radius between 1.9–2.4 nm) are influenced by the QDs’ templating effect. Furthermore, simulations suggest that the medium gold clusters grow preferably along the QDs’ boundaries rather than as a top coating of the QDs. When the thickness of the sputtered gold layer reaches 6.25 nm, larger gold clusters with a radius of 5.3 nm form. Simultaneously, a percolation layer with a thickness of 2.5 nm is established underneath the gold clusters. This fundamental understanding of the QD–gold interface formation will help to control the implementation of sputtered gold electrodes on close-packed QD solids in device manufacturing processes. |
| 462. | Hohn, Nuri; Wang, Xiaoyan; Giebel, Michael A; Yin, Shanshan; Müller, David; Hetzenecker, Andreas E; Bießmann, Lorenz; Kreuzer, Lucas P; Möhl, Gilles E; Yu, Haoyang; Veinot, Jonathan G C; Fässler, Thomas F; Cheng, Ya-Jun; Müller-Buschbaum, Peter: Mesoporous GeOx/Ge/C as a Highly Reversible Anode Material with High Specific Capacity for Lithium-Ion Batteries. In: ACS Applied Materials & Interfaces, 12 (41), pp. 47002-47009, 2020, (PMID: 32955236). (Type: Journal Article | Abstract | Links | BibTeX) @article{Hohn2020, title = {Mesoporous GeOx/Ge/C as a Highly Reversible Anode Material with High Specific Capacity for Lithium-Ion Batteries}, author = {Nuri Hohn and Xiaoyan Wang and Michael A Giebel and Shanshan Yin and David Müller and Andreas E Hetzenecker and Lorenz Bießmann and Lucas P Kreuzer and Gilles E Möhl and Haoyang Yu and Jonathan G C Veinot and Thomas F Fässler and Ya-Jun Cheng and Peter Müller-Buschbaum}, url = {https://doi.org/10.1021/acsami.0c13560}, doi = {10.1021/acsami.0c13560}, year = {2020}, date = {2020-01-01}, journal = {ACS Applied Materials & Interfaces}, volume = {12}, number = {41}, pages = {47002-47009}, abstract = {Nanostructured Ge is considered a highly promising material for Li-ion battery applications as Ge offers high specific capacity and Li-ion diffusivity, while inherent mesoporous nanostructures can contribute resistance against capacity fading as typically induced by high volume expansion in bulk Ge films. Mesoporous GeOx/Ge/C films are synthesized using K4Ge9 Zintl clusters as a Ge precursor and the amphiphilic diblock copolymer polystyrene-block-polyethylene oxide as a templating tool. As compared to a reference sample without post-treatment, enhanced surface-to-volume ratios are achieved through post-treatment with a poor-good azeotrope solvent mixture. High capacities of over 2000 mA h g–1 are obtained with good stability over 300 cycles. Information from morphological and compositional characterization for both reference and post-treated sample suggests that the good electrochemical performance originates from reversible GeO2 conversion reactions.}, note = {PMID: 32955236}, keywords = {}, pubstate = {published}, tppubtype = {article} } Nanostructured Ge is considered a highly promising material for Li-ion battery applications as Ge offers high specific capacity and Li-ion diffusivity, while inherent mesoporous nanostructures can contribute resistance against capacity fading as typically induced by high volume expansion in bulk Ge films. Mesoporous GeOx/Ge/C films are synthesized using K4Ge9 Zintl clusters as a Ge precursor and the amphiphilic diblock copolymer polystyrene-block-polyethylene oxide as a templating tool. As compared to a reference sample without post-treatment, enhanced surface-to-volume ratios are achieved through post-treatment with a poor-good azeotrope solvent mixture. High capacities of over 2000 mA h g–1 are obtained with good stability over 300 cycles. Information from morphological and compositional characterization for both reference and post-treated sample suggests that the good electrochemical performance originates from reversible GeO2 conversion reactions. |
| 463. | Zhao, Heng; Naveed, Hafiz Bilal; Lin, Baojun; Zhou, Xiaobo; Yuan, Jian; Zhou, Ke; Wu, Hongbo; Guo, Renjun; Scheel, Manuel A; Chumakov, Andrei; Roth, Stephan V; Tang, Zheng; Müller-Buschbaum, Peter; Ma, Wei: Hot Hydrocarbon-Solvent Slot-Die Coating Enables High-Efficiency Organic Solar Cells with Temperature-Dependent Aggregation Behavior. In: Advanced Materials, 32 (39), pp. 2002302, 2020. (Type: Journal Article | Abstract | Links | BibTeX) @article{Zhao2020, title = {Hot Hydrocarbon-Solvent Slot-Die Coating Enables High-Efficiency Organic Solar Cells with Temperature-Dependent Aggregation Behavior}, author = {Heng Zhao and Hafiz Bilal Naveed and Baojun Lin and Xiaobo Zhou and Jian Yuan and Ke Zhou and Hongbo Wu and Renjun Guo and Manuel A Scheel and Andrei Chumakov and Stephan V Roth and Zheng Tang and Peter Müller-Buschbaum and Wei Ma}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/adma.202002302}, doi = {https://doi.org/10.1002/adma.202002302}, year = {2020}, date = {2020-01-01}, journal = {Advanced Materials}, volume = {32}, number = {39}, pages = {2002302}, abstract = {Abstract Organic solar cells (OSCs) have made rapid progress in terms of their development as a sustainable energy source. However, record-breaking devices have not shown compatibility with large-scale production via solution processing in particular due to the use of halogenated environment-threatening solvents. Here, slot-die fabrication with processing involving hydrocarbon-based solvents is used to realize highly efficient and environmentally friendly OSCs. Highly compatible slot-die coating with roll-to-roll processing using halogenated (chlorobenzene (CB)) and hydrocarbon solvents (1,2,4-trimethylbenzene (TMB) and ortho-xylene (o-XY)) is used to fabricate photoactive films. Controlled solution and substrate temperatures enable similar aggregation states in the solution and similar kinetics processes during film formation. The optimized blend film nanostructures for different solvents in the highly efficient PM6:Y6 blend is adopted to show a similar morphology, which results in device efficiencies of 15.2%, 15.4%, and 15.6% for CB, TMB, and o-XY solvents. This approach is successfully extended to other donor–acceptor combinations to demonstrate the excellent universality of this method. The results combine a method to optimize the aggregation state and film formation kinetics with the fabrication of OSCs with environmentally friendly solvents by slot-die coating, which is a critical finding for the future development of OSCs in terms of their scalable production and high-performance.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Abstract Organic solar cells (OSCs) have made rapid progress in terms of their development as a sustainable energy source. However, record-breaking devices have not shown compatibility with large-scale production via solution processing in particular due to the use of halogenated environment-threatening solvents. Here, slot-die fabrication with processing involving hydrocarbon-based solvents is used to realize highly efficient and environmentally friendly OSCs. Highly compatible slot-die coating with roll-to-roll processing using halogenated (chlorobenzene (CB)) and hydrocarbon solvents (1,2,4-trimethylbenzene (TMB) and ortho-xylene (o-XY)) is used to fabricate photoactive films. Controlled solution and substrate temperatures enable similar aggregation states in the solution and similar kinetics processes during film formation. The optimized blend film nanostructures for different solvents in the highly efficient PM6:Y6 blend is adopted to show a similar morphology, which results in device efficiencies of 15.2%, 15.4%, and 15.6% for CB, TMB, and o-XY solvents. This approach is successfully extended to other donor–acceptor combinations to demonstrate the excellent universality of this method. The results combine a method to optimize the aggregation state and film formation kinetics with the fabrication of OSCs with environmentally friendly solvents by slot-die coating, which is a critical finding for the future development of OSCs in terms of their scalable production and high-performance. |
| 464. | Yin, Shanshan; Tian, Ting; Wienhold, Kerstin S; Weindl, Christian L; Guo, Renjun; Schwartzkopf, Matthias; Roth, Stephan V; Müller-Buschbaum, Peter: Key Factor Study for Amphiphilic Block Copolymer-Templated Mesoporous SnO2 Thin Film Synthesis: Influence of Solvent and Catalyst. In: Advanced Materials Interfaces, 7 (18), pp. 2001002, 2020. (Type: Journal Article | Abstract | Links | BibTeX) @article{Yin2020, title = {Key Factor Study for Amphiphilic Block Copolymer-Templated Mesoporous SnO2 Thin Film Synthesis: Influence of Solvent and Catalyst}, author = {Shanshan Yin and Ting Tian and Kerstin S Wienhold and Christian L Weindl and Renjun Guo and Matthias Schwartzkopf and Stephan V Roth and Peter Müller-Buschbaum}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/admi.202001002}, doi = {https://doi.org/10.1002/admi.202001002}, year = {2020}, date = {2020-01-01}, journal = {Advanced Materials Interfaces}, volume = {7}, number = {18}, pages = {2001002}, abstract = {Abstract As a crucial material in the field of energy storage, SnO2 thin films are widely applied in daily life and have been in the focus of scientific research. Compared to the planar counterpart, mesoporous SnO2 thin films with high specific surface area possess more attractive physical and chemical properties. In the present work, a novel amphiphilic block copolymer-assisted sol–gel chemistry is utilized for the synthesis of porous tin oxide (SnO2). Two key factors for the sol–gel stock solution preparation, the solvent category and the catalyst content, are systematically varied to tune the thin film morphologies. A calcination process is performed to remove the polymer template at 500 °C in ambient conditions. The surface morphology and the buried inner structure are probed with scanning electron microscope and grazing-incidence small-angle X-ray scattering. Crystallinity is characterized by X-ray diffraction. The multi-dimensional characterization results suggest that cassiterite SnO2 with spherical, cylindrical, and vesicular pore structures are obtained. The variation of the film morphology is governed by the preferential affinity of the utilized solvent mixture and the hydrogen bond interaction between the employed cycloether and H2O molecules in the solution.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Abstract As a crucial material in the field of energy storage, SnO2 thin films are widely applied in daily life and have been in the focus of scientific research. Compared to the planar counterpart, mesoporous SnO2 thin films with high specific surface area possess more attractive physical and chemical properties. In the present work, a novel amphiphilic block copolymer-assisted sol–gel chemistry is utilized for the synthesis of porous tin oxide (SnO2). Two key factors for the sol–gel stock solution preparation, the solvent category and the catalyst content, are systematically varied to tune the thin film morphologies. A calcination process is performed to remove the polymer template at 500 °C in ambient conditions. The surface morphology and the buried inner structure are probed with scanning electron microscope and grazing-incidence small-angle X-ray scattering. Crystallinity is characterized by X-ray diffraction. The multi-dimensional characterization results suggest that cassiterite SnO2 with spherical, cylindrical, and vesicular pore structures are obtained. The variation of the film morphology is governed by the preferential affinity of the utilized solvent mixture and the hydrogen bond interaction between the employed cycloether and H2O molecules in the solution. |
| 465. | Chen, Wei; Tang, Haodong; Chen, Yulong; Heger, Julian E; Li, Nian; Kreuzer, Lucas P; Xie, Yue; Li, Depeng; Anthony, Carl; Pikramenou, Zoe; Ng, Kar Wei; Sun, Xiao Wei; Wang, Kai; Müller-Buschbaum, Peter: Spray-deposited PbS colloidal quantum dot solid for near-infrared photodetectors. In: Nano Energy, 78 , pp. 105254, 2020, ISSN: 2211-2855. (Type: Journal Article | Abstract | Links | BibTeX) @article{Chen2020a, title = {Spray-deposited PbS colloidal quantum dot solid for near-infrared photodetectors}, author = {Wei Chen and Haodong Tang and Yulong Chen and Julian E Heger and Nian Li and Lucas P Kreuzer and Yue Xie and Depeng Li and Carl Anthony and Zoe Pikramenou and Kar Wei Ng and Xiao Wei Sun and Kai Wang and Peter Müller-Buschbaum}, url = {http://www.sciencedirect.com/science/article/pii/S2211285520308326}, doi = {https://doi.org/10.1016/j.nanoen.2020.105254}, issn = {2211-2855}, year = {2020}, date = {2020-01-01}, journal = {Nano Energy}, volume = {78}, pages = {105254}, abstract = {Colloidal PbS quantum dots (QDs) are promising candidates for various optoelectronic applications based on solution-processed thin-film techniques. In this work, a versatile layer-by-layer (LBL) spray deposition of the QDs is introduced aiming for a future large-scale fabrication process of optoelectronic devices. As compared to spin-coated QD solids, a smaller inter-dot distance and a better-ordered superlattice stacking behavior of the QDs are found in the spray-deposited QD solids as confirmed by grazing-incidence small-angle X-ray scattering (GISAXS). The spectral mapping combined time-resolved photoluminescence analysis indicates a longer charge carrier lifetime and better order of the energy state distribution of the spray-deposited QD solid comparing with the spin-coated one. Thus, photodetectors based on spray deposition of QD solids demonstrate an excellent device performance, with the responsivity achieving 365.1 A/W and the detectivity reaching up to 1.4 × 1012 Jones under an illumination power of 63.5 μW/cm2 at a wavelength of 1250 nm. The spray-deposited device performances indicate a great potential of spray deposition of large sized QDs in large-scale fabrications for optoelectronics using longer wavelengths.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Colloidal PbS quantum dots (QDs) are promising candidates for various optoelectronic applications based on solution-processed thin-film techniques. In this work, a versatile layer-by-layer (LBL) spray deposition of the QDs is introduced aiming for a future large-scale fabrication process of optoelectronic devices. As compared to spin-coated QD solids, a smaller inter-dot distance and a better-ordered superlattice stacking behavior of the QDs are found in the spray-deposited QD solids as confirmed by grazing-incidence small-angle X-ray scattering (GISAXS). The spectral mapping combined time-resolved photoluminescence analysis indicates a longer charge carrier lifetime and better order of the energy state distribution of the spray-deposited QD solid comparing with the spin-coated one. Thus, photodetectors based on spray deposition of QD solids demonstrate an excellent device performance, with the responsivity achieving 365.1 A/W and the detectivity reaching up to 1.4 × 1012 Jones under an illumination power of 63.5 μW/cm2 at a wavelength of 1250 nm. The spray-deposited device performances indicate a great potential of spray deposition of large sized QDs in large-scale fabrications for optoelectronics using longer wavelengths. |
| 466. | Wienhold, Kerstin S; Weindl, Christian L; Yin, Shanshan; Tian, Ting; Schwartzkopf, Matthias; Rothkirch, André; Roth, Stephan V; Müller-Buschbaum, Peter: Following In Situ the Evolution of Morphology and Optical Properties during Printing of Thin Films for Application in Non-Fullerene Acceptor Based Organic Solar Cells. In: ACS Applied Materials & Interfaces, 12 (36), pp. 40381-40392, 2020, (PMID: 32805887). (Type: Journal Article | Abstract | Links | BibTeX) @article{Wienhold2020, title = {Following In Situ the Evolution of Morphology and Optical Properties during Printing of Thin Films for Application in Non-Fullerene Acceptor Based Organic Solar Cells}, author = {Kerstin S Wienhold and Christian L Weindl and Shanshan Yin and Ting Tian and Matthias Schwartzkopf and André Rothkirch and Stephan V Roth and Peter Müller-Buschbaum}, url = {https://doi.org/10.1021/acsami.0c12390}, doi = {10.1021/acsami.0c12390}, year = {2020}, date = {2020-01-01}, journal = {ACS Applied Materials & Interfaces}, volume = {12}, number = {36}, pages = {40381-40392}, abstract = {In situ printing gives insight into the evolution of morphology and optical properties during slot-die coating of active layers for application in organic solar cells and enables an upscaling and optimization of the thin film deposition process and the photovoltaic performance. Active layers based on the conjugated polymer donor with benzodithiophene units PBDB-T-2Cl and the non-fullerene small-molecule acceptor IT-4F are printed with a slot-die coating technique and probed in situ with grazing incidence small-angle X-ray scattering, grazing incidence wide-angle X-ray scattering, and ultraviolet/visible light spectroscopy. The formation of the morphology is followed from the liquid state to the final dry film for different printing conditions (at 25 and 35 °C), and five regimes of film formation are determined. The morphological changes are correlated to changing optical properties. During the film formation, crystallization of the non-fullerene small-molecule acceptor takes place and polymer domains with sizes of some tens of nanometers emerge. A red shift of the optical band gap and a broadening of the absorbance spectrum occurs, which allow for exploiting the sun spectrum more efficiently and are expected to have a favorable effect on the solar cell performance.}, note = {PMID: 32805887}, keywords = {}, pubstate = {published}, tppubtype = {article} } In situ printing gives insight into the evolution of morphology and optical properties during slot-die coating of active layers for application in organic solar cells and enables an upscaling and optimization of the thin film deposition process and the photovoltaic performance. Active layers based on the conjugated polymer donor with benzodithiophene units PBDB-T-2Cl and the non-fullerene small-molecule acceptor IT-4F are printed with a slot-die coating technique and probed in situ with grazing incidence small-angle X-ray scattering, grazing incidence wide-angle X-ray scattering, and ultraviolet/visible light spectroscopy. The formation of the morphology is followed from the liquid state to the final dry film for different printing conditions (at 25 and 35 °C), and five regimes of film formation are determined. The morphological changes are correlated to changing optical properties. During the film formation, crystallization of the non-fullerene small-molecule acceptor takes place and polymer domains with sizes of some tens of nanometers emerge. A red shift of the optical band gap and a broadening of the absorbance spectrum occurs, which allow for exploiting the sun spectrum more efficiently and are expected to have a favorable effect on the solar cell performance. |
| 467. | Yang, Dan; Grott, Sebastian; Jiang, Xinyu; Wienhold, Kerstin S; Schwartzkopf, Matthias; Roth, Stephan V; Müller-Buschbaum, Peter: In Situ Studies of Solvent Additive Effects on the Morphology Development during Printing of Bulk Heterojunction Films for Organic Solar Cells. In: Small Methods, 4 (9), pp. 2000418, 2020. (Type: Journal Article | Abstract | Links | BibTeX) @article{Yang2020, title = {In Situ Studies of Solvent Additive Effects on the Morphology Development during Printing of Bulk Heterojunction Films for Organic Solar Cells}, author = {Dan Yang and Sebastian Grott and Xinyu Jiang and Kerstin S Wienhold and Matthias Schwartzkopf and Stephan V Roth and Peter Müller-Buschbaum}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/smtd.202000418}, doi = {https://doi.org/10.1002/smtd.202000418}, year = {2020}, date = {2020-01-01}, journal = {Small Methods}, volume = {4}, number = {9}, pages = {2000418}, abstract = {Abstract The development of polymer morphology and crystallinity of printed bulk heterojunction (BHJ) films doped with the different solvent additives 1,8-diiodooctane (DIO) or diphenyl ether (DPE) is investigated with in situ grazing-incidence small/wide-angle X-ray scattering. The solvent additives, having different boiling points, lead to a different film drying behavior and morphology growth states in the BHJ films of the benzothiadiazole-based polymer (PPDT2FBT) and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM). The phase demixing in the printed films is changing over time along with solvent evaporation. Polymer domains start aggregating to form larger domains in the liquid–liquid phase, while phase separation mainly occurs in the liquid–solid phase. The present work provides a profound insight into the morphology development of printed BHJ films doped with different solvent additives, which is particularly important for the large-scale fabrication of organic photovoltaics.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Abstract The development of polymer morphology and crystallinity of printed bulk heterojunction (BHJ) films doped with the different solvent additives 1,8-diiodooctane (DIO) or diphenyl ether (DPE) is investigated with in situ grazing-incidence small/wide-angle X-ray scattering. The solvent additives, having different boiling points, lead to a different film drying behavior and morphology growth states in the BHJ films of the benzothiadiazole-based polymer (PPDT2FBT) and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM). The phase demixing in the printed films is changing over time along with solvent evaporation. Polymer domains start aggregating to form larger domains in the liquid–liquid phase, while phase separation mainly occurs in the liquid–solid phase. The present work provides a profound insight into the morphology development of printed BHJ films doped with different solvent additives, which is particularly important for the large-scale fabrication of organic photovoltaics. |
| 468. | Wienhold, Kerstin S; Chen, Wei; Yin, Shanshan; Guo, Renjun; Schwartzkopf, Matthias; Roth, Stephan V; Müller-Buschbaum, Peter: Following in Operando the Structure Evolution-Induced Degradation in Printed Organic Solar Cells with Nonfullerene Small Molecule Acceptor. In: Solar RRL, 4 (9), pp. 2000251, 2020. (Type: Journal Article | Abstract | Links | BibTeX) @article{Wienhold2020a, title = {Following in Operando the Structure Evolution-Induced Degradation in Printed Organic Solar Cells with Nonfullerene Small Molecule Acceptor}, author = {Kerstin S Wienhold and Wei Chen and Shanshan Yin and Renjun Guo and Matthias Schwartzkopf and Stephan V Roth and Peter Müller-Buschbaum}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/solr.202000251}, doi = {https://doi.org/10.1002/solr.202000251}, year = {2020}, date = {2020-01-01}, journal = {Solar RRL}, volume = {4}, number = {9}, pages = {2000251}, abstract = {Understanding the degradation mechanisms of printed bulk-heterojunction (BHJ) organic solar cells during operation is essential to achieve long-term stability and realize real-world applications of organic photovoltaics. Herein, the degradation of printed organic solar cells based on the conjugated benzodithiophene polymer PBDB-T-SF and the nonfullerene small molecule acceptor IT-4F with 0.25 vol% 1,8-diiodooctane (DIO) solvent additive is studied in operando for two different donor:acceptor ratios. The inner nano-morphology is analyzed with grazing incidence small angle X-ray scattering (GISAXS), and current–voltage (I–V) characteristics are probed simultaneously. Irrespective of the mixing ratio, degradation occurs by the same degradation mechanism. A decrease in the short-circuit current density (JSC) is identified to be the determining factor for the decline of the power conversion efficiency. The decrease in JSC is induced by a reduction of the relative interface area between the conjugated polymer and the small molecule acceptor in the BHJ structure, resembling the morphological degradation of the active layer.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Understanding the degradation mechanisms of printed bulk-heterojunction (BHJ) organic solar cells during operation is essential to achieve long-term stability and realize real-world applications of organic photovoltaics. Herein, the degradation of printed organic solar cells based on the conjugated benzodithiophene polymer PBDB-T-SF and the nonfullerene small molecule acceptor IT-4F with 0.25 vol% 1,8-diiodooctane (DIO) solvent additive is studied in operando for two different donor:acceptor ratios. The inner nano-morphology is analyzed with grazing incidence small angle X-ray scattering (GISAXS), and current–voltage (I–V) characteristics are probed simultaneously. Irrespective of the mixing ratio, degradation occurs by the same degradation mechanism. A decrease in the short-circuit current density (JSC) is identified to be the determining factor for the decline of the power conversion efficiency. The decrease in JSC is induced by a reduction of the relative interface area between the conjugated polymer and the small molecule acceptor in the BHJ structure, resembling the morphological degradation of the active layer. |
| 469. | Yang, Dan; Löhrer, Franziska C; Körstgens, Volker; Schreiber, Armin; Cao, Bing; Bernstorff, Sigrid; Müller-Buschbaum, Peter: In Operando GISAXS and GIWAXS Stability Study of Organic Solar Cells Based on PffBT4T-2OD:PC71BM with and without Solvent Additive. In: Advanced Science, 7 (16), pp. 2001117, 2020. (Type: Journal Article | Abstract | Links | BibTeX) @article{Yang2020a, title = {In Operando GISAXS and GIWAXS Stability Study of Organic Solar Cells Based on PffBT4T-2OD:PC71BM with and without Solvent Additive}, author = {Dan Yang and Franziska C Löhrer and Volker Körstgens and Armin Schreiber and Bing Cao and Sigrid Bernstorff and Peter Müller-Buschbaum}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/advs.202001117}, doi = {https://doi.org/10.1002/advs.202001117}, year = {2020}, date = {2020-01-01}, journal = {Advanced Science}, volume = {7}, number = {16}, pages = {2001117}, abstract = {Abstract Solvent additives are known to modify the morphology of bulk heterojunction active layers to achieve high efficiency organic solar cells. However, the knowledge about the influence of solvent additives on the morphology degradation is limited. Hence, in operando grazing-incidence small and wide angle X-ray scattering (GISAXS and GIWAXS) measurements are applied on a series of PffBT4T-2OD:PC71BM-based solar cells prepared without and with solvent additives. The solar cells fabricated without a solvent additive, with 1,8-diiodoctane (DIO), and with o-chlorobenzaldehyde (CBA) additive show differences in the device degradation and changes in the morphology and crystallinity of the active layers. The mesoscale morphology changes are correlated with the decay of the short-circuit current Jsc and the evolution of crystalline grain sizes is codependent with the decay of open-circuit voltage Voc. Without additive, the loss in Jsc dominates the degradation, whereas with solvent additive (DIO and CBA) the loss in Voc rules the degradation. CBA addition increases the overall device stability as compared to DIO or absence of additive.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Abstract Solvent additives are known to modify the morphology of bulk heterojunction active layers to achieve high efficiency organic solar cells. However, the knowledge about the influence of solvent additives on the morphology degradation is limited. Hence, in operando grazing-incidence small and wide angle X-ray scattering (GISAXS and GIWAXS) measurements are applied on a series of PffBT4T-2OD:PC71BM-based solar cells prepared without and with solvent additives. The solar cells fabricated without a solvent additive, with 1,8-diiodoctane (DIO), and with o-chlorobenzaldehyde (CBA) additive show differences in the device degradation and changes in the morphology and crystallinity of the active layers. The mesoscale morphology changes are correlated with the decay of the short-circuit current Jsc and the evolution of crystalline grain sizes is codependent with the decay of open-circuit voltage Voc. Without additive, the loss in Jsc dominates the degradation, whereas with solvent additive (DIO and CBA) the loss in Voc rules the degradation. CBA addition increases the overall device stability as compared to DIO or absence of additive. |
| 470. | Reb, Lennart K; Böhmer, Michael; Predeschly, Benjamin; Grott, Sebastian; Weindl, Christian L; Ivandekic, Goran I; Guo, Renjun; Dreißigacker, Christoph; Gernhäuser, Roman; Meyer, Andreas; Müller-Buschbaum, Peter: Perovskite and Organic Solar Cells on a Rocket Flight. In: Joule, 4 (9), pp. 1880 - 1892, 2020, ISSN: 2542-4351. (Type: Journal Article | Abstract | Links | BibTeX) @article{Reb2020, title = {Perovskite and Organic Solar Cells on a Rocket Flight}, author = {Lennart K Reb and Michael Böhmer and Benjamin Predeschly and Sebastian Grott and Christian L Weindl and Goran I Ivandekic and Renjun Guo and Christoph Dreißigacker and Roman Gernhäuser and Andreas Meyer and Peter Müller-Buschbaum}, url = {http://www.sciencedirect.com/science/article/pii/S2542435120303226}, doi = {https://doi.org/10.1016/j.joule.2020.07.004}, issn = {2542-4351}, year = {2020}, date = {2020-01-01}, journal = {Joule}, volume = {4}, number = {9}, pages = {1880 - 1892}, abstract = {Summary Perovskite and organic solar cells possess a revolutionary potential for space applications. The thin-film solar cells can be processed onto thin polymer foils that enable an exceptional specific power, i.e., obtainable electric power per mass, being superior to their inorganic counterparts. However, research toward space applications was mainly restricted to terrestrial conditions so far. Here, we report the launch of perovskite and organic solar cells of different architectures on a suborbital rocket flight. This is an in situ demonstration of their functionality and power generation under space conditions. We measured solar cell current-voltage characteristics in variable illumination states due to different rocket orientations during flight. Under strong solar irradiance, the solar cells perform efficiently, and they even produce power with weak diffuse light reflected from Earth’s surface. These results highlight both the suitability for near-Earth applications as well as the potential for deep-space missions for these innovative technologies.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Summary Perovskite and organic solar cells possess a revolutionary potential for space applications. The thin-film solar cells can be processed onto thin polymer foils that enable an exceptional specific power, i.e., obtainable electric power per mass, being superior to their inorganic counterparts. However, research toward space applications was mainly restricted to terrestrial conditions so far. Here, we report the launch of perovskite and organic solar cells of different architectures on a suborbital rocket flight. This is an in situ demonstration of their functionality and power generation under space conditions. We measured solar cell current-voltage characteristics in variable illumination states due to different rocket orientations during flight. Under strong solar irradiance, the solar cells perform efficiently, and they even produce power with weak diffuse light reflected from Earth’s surface. These results highlight both the suitability for near-Earth applications as well as the potential for deep-space missions for these innovative technologies. |
| 471. | Wienhold, Kerstin S; Körstgens, Volker; Grott, Sebastian; Jiang, Xinyu; Schwartzkopf, Matthias; Roth, Stephan V; Müller-Buschbaum, Peter: In Situ Printing: Insights into the Morphology Formation and Optical Property Evolution of Slot-Die-Coated Active Layers Containing Low Bandgap Polymer Donor and Nonfullerene Small Molecule Acceptor. In: Solar RRL, 4 (7), pp. 2000086, 2020. (Type: Journal Article | Abstract | Links | BibTeX) @article{Wienhold2020b, title = {In Situ Printing: Insights into the Morphology Formation and Optical Property Evolution of Slot-Die-Coated Active Layers Containing Low Bandgap Polymer Donor and Nonfullerene Small Molecule Acceptor}, author = {Kerstin S Wienhold and Volker Körstgens and Sebastian Grott and Xinyu Jiang and Matthias Schwartzkopf and Stephan V Roth and Peter Müller-Buschbaum}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/solr.202000086}, doi = {https://doi.org/10.1002/solr.202000086}, year = {2020}, date = {2020-01-01}, journal = {Solar RRL}, volume = {4}, number = {7}, pages = {2000086}, abstract = {Printing of active layers for high-efficiency organic solar cells with the slot-die coating technique can overcome the challenge of upscaling, which will be needed for organic photovoltaics on its way to marketability. The morphology of a bulk-heterojunction organic solar cell has a very high impact on its power conversion efficiency. Therefore, it is of particular importance to understand the mechanisms of structure formation during printing of active layers to enable further optimization of the solar cell performance and upscaling of the production process. Meniscus-guided slot-die coating of the blend of a low bandgap conjugated polymer donor with benzodithiophene units PBDB-T-SF and the nonfullerene small molecule acceptor IT-4F is studied in situ with optical microscopy, Ultraviolet–visible spectroscopy, and grazing incidence small angle X-ray scattering. The structure formation is followed from the liquid to the final dry film state. Thereby, five regimes of morphology formation are determined. The morphological evolution in the printed active layer is correlated to changing optical properties of the thin film. In the final dry film, polymer domains of several tens of nanometers are observed, which will be favorable for application in high-efficiency organic solar cells.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Printing of active layers for high-efficiency organic solar cells with the slot-die coating technique can overcome the challenge of upscaling, which will be needed for organic photovoltaics on its way to marketability. The morphology of a bulk-heterojunction organic solar cell has a very high impact on its power conversion efficiency. Therefore, it is of particular importance to understand the mechanisms of structure formation during printing of active layers to enable further optimization of the solar cell performance and upscaling of the production process. Meniscus-guided slot-die coating of the blend of a low bandgap conjugated polymer donor with benzodithiophene units PBDB-T-SF and the nonfullerene small molecule acceptor IT-4F is studied in situ with optical microscopy, Ultraviolet–visible spectroscopy, and grazing incidence small angle X-ray scattering. The structure formation is followed from the liquid to the final dry film state. Thereby, five regimes of morphology formation are determined. The morphological evolution in the printed active layer is correlated to changing optical properties of the thin film. In the final dry film, polymer domains of several tens of nanometers are observed, which will be favorable for application in high-efficiency organic solar cells. |
| 472. | Chen, Wei; Tang, Haodong; Li, Nian; Scheel, Manuel A; Xie, Yue; Li, Depeng; Körstgens, Volker; Schwartzkopf, Matthias; Roth, Stephan V; Wang, Kai; Sun, Xiao Wei; Müller-Buschbaum, Peter: Colloidal PbS quantum dot stacking kinetics during deposition via printing. In: Nanoscale Horiz., 5 , pp. 880-885, 2020. (Type: Journal Article | Abstract | Links | BibTeX) @article{Chen2020b, title = {Colloidal PbS quantum dot stacking kinetics during deposition via printing}, author = {Wei Chen and Haodong Tang and Nian Li and Manuel A Scheel and Yue Xie and Depeng Li and Volker Körstgens and Matthias Schwartzkopf and Stephan V Roth and Kai Wang and Xiao Wei Sun and Peter Müller-Buschbaum}, url = {http://dx.doi.org/10.1039/D0NH00008F}, doi = {10.1039/D0NH00008F}, year = {2020}, date = {2020-01-01}, journal = {Nanoscale Horiz.}, volume = {5}, pages = {880-885}, publisher = {The Royal Society of Chemistry}, abstract = {Colloidal PbS quantum dots (QDs) are attractive for solution-processed thin-film optoelectronic applications. In particular, directly achieving QD thin-films by printing is a very promising method for low-cost and large-scale fabrication. The kinetics of QD particles during the deposition process play an important role in the QD film quality and their respective optoelectronic performance. In this work, the particle self-organization behavior of small-sized QDs with an average diameter of 2.88 ± 0.36 nm is investigated for the first time in situ during printing by grazing-incidence small-angle X-ray scattering (GISAXS). The time-dependent changes in peak intensities suggest that the structure formation and phase transition of QD films happen within 30 seconds. The stacking of QDs is initialized by a templating effect, and a face-centered cubic (FCC) film forms in which a superlattice distortion is also found. A body-centered cubic nested FCC stacking is the final QD assembly layout. The small size of the inorganic QDs and the ligand collapse during the solvent evaporation can well explain this stacking behavior. These results provide important fundamental understanding of structure formation of small-sized QD based films prepared via large-scale deposition with printing with a slot die coater.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Colloidal PbS quantum dots (QDs) are attractive for solution-processed thin-film optoelectronic applications. In particular, directly achieving QD thin-films by printing is a very promising method for low-cost and large-scale fabrication. The kinetics of QD particles during the deposition process play an important role in the QD film quality and their respective optoelectronic performance. In this work, the particle self-organization behavior of small-sized QDs with an average diameter of 2.88 ± 0.36 nm is investigated for the first time in situ during printing by grazing-incidence small-angle X-ray scattering (GISAXS). The time-dependent changes in peak intensities suggest that the structure formation and phase transition of QD films happen within 30 seconds. The stacking of QDs is initialized by a templating effect, and a face-centered cubic (FCC) film forms in which a superlattice distortion is also found. A body-centered cubic nested FCC stacking is the final QD assembly layout. The small size of the inorganic QDs and the ligand collapse during the solvent evaporation can well explain this stacking behavior. These results provide important fundamental understanding of structure formation of small-sized QD based films prepared via large-scale deposition with printing with a slot die coater. |
| 473. | Yin, Shanshan; Song, Lin; Xia, Senlin; Cheng, Yajun; Hohn, Nuri; Chen, Wei; Wang, Kun; Cao, Wei; Hou, Shujin; Müller-Buschbaum, Peter: Key Factors for Template-Oriented Porous Titania Synthesis: Solvents and Catalysts. In: Small Methods, 4 (3), pp. 1900689, 2020. (Type: Journal Article | Abstract | Links | BibTeX) @article{Yin2020a, title = {Key Factors for Template-Oriented Porous Titania Synthesis: Solvents and Catalysts}, author = {Shanshan Yin and Lin Song and Senlin Xia and Yajun Cheng and Nuri Hohn and Wei Chen and Kun Wang and Wei Cao and Shujin Hou and Peter Müller-Buschbaum}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/smtd.201900689}, doi = {https://doi.org/10.1002/smtd.201900689}, year = {2020}, date = {2020-01-01}, journal = {Small Methods}, volume = {4}, number = {3}, pages = {1900689}, abstract = {Abstract Various types of titania nanostructures are synthesized with a polymer-templated sol–gel method based on the amphiphilic diblock copolymer polystyrene-b-polyethylene oxide (PS-b-PEO) in combination with selective incorporation of the titania precursor titanium tetraisopropoxide. Custom tailoring of different types of titania morphologies is realized by changing the phase separation behavior of the PS-b-PEO template. Particularly, application of solvents from different categories is found to have a major impact upon the phase separation behavior of PS-b-PEO and the final titania film morphology. The amount of available hydrochloric acid catalyst during the gelation process is seen as an additional key factor to induce controllable morphological changes. Scanning electron microscopy and grazing incidence small angle X-ray scattering measurements are carried out to study the surface and inner structure of porous titania films. Systematic analysis and comparison of different characterization results allow attributing the following three factors to the respectively formed titania nanostructure: the surface energy between PS blocks and surrounding solvent, the aggregation behavior of the titania nanoparticles, and the block-specific selectivity of the used solvent. For all synthesized titania thin films, an anatase-type crystallization is confirmed through X-ray powder diffraction.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Abstract Various types of titania nanostructures are synthesized with a polymer-templated sol–gel method based on the amphiphilic diblock copolymer polystyrene-b-polyethylene oxide (PS-b-PEO) in combination with selective incorporation of the titania precursor titanium tetraisopropoxide. Custom tailoring of different types of titania morphologies is realized by changing the phase separation behavior of the PS-b-PEO template. Particularly, application of solvents from different categories is found to have a major impact upon the phase separation behavior of PS-b-PEO and the final titania film morphology. The amount of available hydrochloric acid catalyst during the gelation process is seen as an additional key factor to induce controllable morphological changes. Scanning electron microscopy and grazing incidence small angle X-ray scattering measurements are carried out to study the surface and inner structure of porous titania films. Systematic analysis and comparison of different characterization results allow attributing the following three factors to the respectively formed titania nanostructure: the surface energy between PS blocks and surrounding solvent, the aggregation behavior of the titania nanoparticles, and the block-specific selectivity of the used solvent. For all synthesized titania thin films, an anatase-type crystallization is confirmed through X-ray powder diffraction. |
| 474. | Li, Nian; Song, Lin; Hohn, Nuri; Saxena, Nitin; Cao, Wei; Jiang, Xinyu; Müller-Buschbaum, Peter: Nanoscale crystallization of a low band gap polymer in printed titania mesopores. In: Nanoscale, 12 , pp. 4085-4093, 2020. (Type: Journal Article | Abstract | Links | BibTeX) @article{Li2020, title = {Nanoscale crystallization of a low band gap polymer in printed titania mesopores}, author = {Nian Li and Lin Song and Nuri Hohn and Nitin Saxena and Wei Cao and Xinyu Jiang and Peter Müller-Buschbaum}, url = {http://dx.doi.org/10.1039/C9NR08055D}, doi = {10.1039/C9NR08055D}, year = {2020}, date = {2020-01-01}, journal = {Nanoscale}, volume = {12}, pages = {4085-4093}, publisher = {The Royal Society of Chemistry}, abstract = {The crystallization behavior of the low band gap polymer poly[(5,6-difluoro-2,1,3-benzothiadiazol-4,7-diyl)-alt-(3,3′′′-di(2-octyldodecyl)2,2′;5′,2′′;5′′,2′′′-quaterthiophen-5,5′′′-diyl)] (PffBT4T-2OD) induced in printed mesoporous titania films with different pore sizes is studied to optimize the crystal orientation for an application in hybrid solar cells. The correlation between the crystal structure of PffBT4T-2OD and the titania pore size is investigated with a combination of grazing incidence wide-angle X-ray scattering (GIWAXS) and grazing incidence small-angle X-ray scattering (GISAXS). For comparison, poly(3-hexylthiophene) (P3HT) is also backfilled into the same four types of printed titania mesoporous scaffolds. Both, lattice constants and crystal sizes of edge-on oriented P3HT crystals decrease with increasing the titania pore size. Similarly and irrespective of the crystal orientation, a denser stacking of PffBT4T-2OD chains is found for larger pore sizes of the titania matrix. For an edge-on orientation, also bigger PffBT4T-2OD crystals are favorably formed in smaller pores, whereas for a face-on orientation, PffBT4T-2OD crystals increase with increasing size of the titania pores. Thus, the best ratio of face-on to edge-on crystals for PffBT4T-2OD is obtained through infiltration into large titania pores.}, keywords = {}, pubstate = {published}, tppubtype = {article} } The crystallization behavior of the low band gap polymer poly[(5,6-difluoro-2,1,3-benzothiadiazol-4,7-diyl)-alt-(3,3′′′-di(2-octyldodecyl)2,2′;5′,2′′;5′′,2′′′-quaterthiophen-5,5′′′-diyl)] (PffBT4T-2OD) induced in printed mesoporous titania films with different pore sizes is studied to optimize the crystal orientation for an application in hybrid solar cells. The correlation between the crystal structure of PffBT4T-2OD and the titania pore size is investigated with a combination of grazing incidence wide-angle X-ray scattering (GIWAXS) and grazing incidence small-angle X-ray scattering (GISAXS). For comparison, poly(3-hexylthiophene) (P3HT) is also backfilled into the same four types of printed titania mesoporous scaffolds. Both, lattice constants and crystal sizes of edge-on oriented P3HT crystals decrease with increasing the titania pore size. Similarly and irrespective of the crystal orientation, a denser stacking of PffBT4T-2OD chains is found for larger pore sizes of the titania matrix. For an edge-on orientation, also bigger PffBT4T-2OD crystals are favorably formed in smaller pores, whereas for a face-on orientation, PffBT4T-2OD crystals increase with increasing size of the titania pores. Thus, the best ratio of face-on to edge-on crystals for PffBT4T-2OD is obtained through infiltration into large titania pores. |
| 475. | Stuke, Annika; Kunkel, Christian; Golze, Dorothea; Todorović, Milica; Margraf, Johannes T; Reuter, Karsten; Rinke, Patrick; Oberhofer, Harald: Atomic structures and orbital energies of 61,489 crystal-forming organic molecules. In: Scientific Data, 7 (1), pp. 58, 2020, ISSN: 2052-4463. (Type: Journal Article | Abstract | Links | BibTeX) @article{Stuke2020, title = {Atomic structures and orbital energies of 61,489 crystal-forming organic molecules}, author = {Annika Stuke and Christian Kunkel and Dorothea Golze and Milica Todorović and Johannes T Margraf and Karsten Reuter and Patrick Rinke and Harald Oberhofer}, url = {https://doi.org/10.1038/s41597-020-0385-y}, doi = {10.1038/s41597-020-0385-y}, issn = {2052-4463}, year = {2020}, date = {2020-01-01}, journal = {Scientific Data}, volume = {7}, number = {1}, pages = {58}, abstract = {Data science and machine learning in materials science require large datasets of technologically relevant molecules or materials. Currently, publicly available molecular datasets with realistic molecular geometries and spectral properties are rare. We here supply a diverse benchmark spectroscopy dataset of 61,489 molecules extracted from organic crystals in the Cambridge Structural Database (CSD), denoted OE62. Molecular equilibrium geometries are reported at the Perdew-Burke-Ernzerhof (PBE) level of density functional theory (DFT) including van der Waals corrections for all 62 k molecules. For these geometries, OE62 supplies total energies and orbital eigenvalues at the PBE and the PBE hybrid (PBE0) functional level of DFT for all 62 k molecules in vacuum as well as at the PBE0 level for a subset of 30,876 molecules in (implicit) water. For 5,239 molecules in vacuum, the dataset provides quasiparticle energies computed with many-body perturbation theory in the G0W0 approximation with a PBE0 starting point (denoted GW5000 in analogy to the GW100 benchmark set (M. van Setten et al. J. Chem. Theory Comput. 12, 5076 (2016))).}, keywords = {}, pubstate = {published}, tppubtype = {article} } Data science and machine learning in materials science require large datasets of technologically relevant molecules or materials. Currently, publicly available molecular datasets with realistic molecular geometries and spectral properties are rare. We here supply a diverse benchmark spectroscopy dataset of 61,489 molecules extracted from organic crystals in the Cambridge Structural Database (CSD), denoted OE62. Molecular equilibrium geometries are reported at the Perdew-Burke-Ernzerhof (PBE) level of density functional theory (DFT) including van der Waals corrections for all 62 k molecules. For these geometries, OE62 supplies total energies and orbital eigenvalues at the PBE and the PBE hybrid (PBE0) functional level of DFT for all 62 k molecules in vacuum as well as at the PBE0 level for a subset of 30,876 molecules in (implicit) water. For 5,239 molecules in vacuum, the dataset provides quasiparticle energies computed with many-body perturbation theory in the G0W0 approximation with a PBE0 starting point (denoted GW5000 in analogy to the GW100 benchmark set (M. van Setten et al. J. Chem. Theory Comput. 12, 5076 (2016))). |
| 476. | Maeda, Takeshi; Liess, Andreas; Kudzus, Astrid; Krause, Ana-Maria; Stolte, Matthias; Amitani, Hitoshi; Yagi, Shigeyuki; Fujiwara, Hideki; Würthner, Frank: Hydrogen bond-rigidified planar squaraine dye and its electronic and organic semiconductor properties. In: Chem. Commun., 56 , pp. 9890-9893, 2020. (Type: Journal Article | Abstract | Links | BibTeX) @article{Maeda2020, title = {Hydrogen bond-rigidified planar squaraine dye and its electronic and organic semiconductor properties}, author = {Takeshi Maeda and Andreas Liess and Astrid Kudzus and Ana-Maria Krause and Matthias Stolte and Hitoshi Amitani and Shigeyuki Yagi and Hideki Fujiwara and Frank Würthner}, url = {http://dx.doi.org/10.1039/D0CC04306K}, doi = {10.1039/D0CC04306K}, year = {2020}, date = {2020-01-01}, journal = {Chem. Commun.}, volume = {56}, pages = {9890-9893}, publisher = {The Royal Society of Chemistry}, abstract = {The one-step reaction of a dicyanovinyl-functionalized squaric acid with Fischer bases afforded C2v symmetric squaraine dyes with rigid planar structures due to intramolecular N–H⋯O hydrogen bonds. Dense molecular packing, decrease of HOMO level, and sufficient thermal stability for sublimation enabled vacuum-processed OTFTs with hole mobility up to 0.32 cm2 V−1 s−1 and current on/off ratio of 106.}, keywords = {}, pubstate = {published}, tppubtype = {article} } The one-step reaction of a dicyanovinyl-functionalized squaric acid with Fischer bases afforded C2v symmetric squaraine dyes with rigid planar structures due to intramolecular N–H⋯O hydrogen bonds. Dense molecular packing, decrease of HOMO level, and sufficient thermal stability for sublimation enabled vacuum-processed OTFTs with hole mobility up to 0.32 cm2 V−1 s−1 and current on/off ratio of 106. |
| 477. | Föller, Jelena; Friese, Daniel H; Riese, Stefan; Kaminski, Jeremy M; Metz, Simon; Schmidt, David; Würthner, Frank; Lambert, Christoph; Marian, Christel M: On the photophysical properties of IrIII, PtII, and PdII (phenylpyrazole) (phenyldipyrrin) complexes. In: Phys. Chem. Chem. Phys., 22 , pp. 3217-3233, 2020. (Type: Journal Article | Abstract | Links | BibTeX) @article{Foeller2020, title = {On the photophysical properties of IrIII, PtII, and PdII (phenylpyrazole) (phenyldipyrrin) complexes}, author = {Jelena Föller and Daniel H Friese and Stefan Riese and Jeremy M Kaminski and Simon Metz and David Schmidt and Frank Würthner and Christoph Lambert and Christel M Marian}, url = {http://dx.doi.org/10.1039/C9CP05603C}, doi = {10.1039/C9CP05603C}, year = {2020}, date = {2020-01-01}, journal = {Phys. Chem. Chem. Phys.}, volume = {22}, pages = {3217-3233}, publisher = {The Royal Society of Chemistry}, abstract = {The absorption and emission characteristics of (ppz)2(dipy)IrIII, (ppz)(dipy)PtII and (ppz)(dipy)PdII, where ppz stands for phenylpyrazole and dipy for a phenyl meso-substituted dipyrrin ligand, have been investigated by means of combined density functional theory and multireference configuration interaction including scalar relativistic and spin–orbit coupling effects. These results were compared with experimental spectra. The complexes exhibit a high density of low-lying electronically excited states originating from ligand-centered (LC) and metal-to-ligand charge transfer (MLCT) states involving the dipyrrin ligand. In addition, metal-centered (MC) states are found to be low-lying in the Pd complex. In all three cases, the first strong absorption band and the phosphorescence emission band stem from LC excitations on the dipyrrin ligand with small MLCT contributions. The MLCT states show more pronounced relaxation effects than the LC states, with the consequence that the first excited state with predominant singlet multiplicity is of SMLCT/LC type in the heavier Ir and Pt complexes. Substantial spin–orbit coupling between SMLCT/LC and TLC enables fast and efficient intersystem crossing (ISC) and a high triplet quantum yield. Phosphorescence rate constants are rather small in accord with the dominant LC character of the transitions. Out-of-plane distortion promotes nonradiative decay of the excited state population via the MC states thus explaining the lower phosphorescence quantum yield of the Pt complex. The spectral properties of the Pd complex are different in many aspects. Optimization of the S1 state yields a dipyrrin intraligand charge transfer (ILCT) state with highly distorted nuclear arrangement in the butterfly conformers leading to nonradiative deactivation. In contrast, the primarily excited SLC state and the SMLCT/LC state of the twist conformer have nearly equal adiabatic excitation energies. The lack of a driving force toward the SMLCT/LC minimum, the high fluorescence rate constant of the bright SLC state and its moderately efficient ISC to the triplet manifold explain the experimentally observed dual emission of the Pd complex at room temperature.}, keywords = {}, pubstate = {published}, tppubtype = {article} } The absorption and emission characteristics of (ppz)2(dipy)IrIII, (ppz)(dipy)PtII and (ppz)(dipy)PdII, where ppz stands for phenylpyrazole and dipy for a phenyl meso-substituted dipyrrin ligand, have been investigated by means of combined density functional theory and multireference configuration interaction including scalar relativistic and spin–orbit coupling effects. These results were compared with experimental spectra. The complexes exhibit a high density of low-lying electronically excited states originating from ligand-centered (LC) and metal-to-ligand charge transfer (MLCT) states involving the dipyrrin ligand. In addition, metal-centered (MC) states are found to be low-lying in the Pd complex. In all three cases, the first strong absorption band and the phosphorescence emission band stem from LC excitations on the dipyrrin ligand with small MLCT contributions. The MLCT states show more pronounced relaxation effects than the LC states, with the consequence that the first excited state with predominant singlet multiplicity is of SMLCT/LC type in the heavier Ir and Pt complexes. Substantial spin–orbit coupling between SMLCT/LC and TLC enables fast and efficient intersystem crossing (ISC) and a high triplet quantum yield. Phosphorescence rate constants are rather small in accord with the dominant LC character of the transitions. Out-of-plane distortion promotes nonradiative decay of the excited state population via the MC states thus explaining the lower phosphorescence quantum yield of the Pt complex. The spectral properties of the Pd complex are different in many aspects. Optimization of the S1 state yields a dipyrrin intraligand charge transfer (ILCT) state with highly distorted nuclear arrangement in the butterfly conformers leading to nonradiative deactivation. In contrast, the primarily excited SLC state and the SMLCT/LC state of the twist conformer have nearly equal adiabatic excitation energies. The lack of a driving force toward the SMLCT/LC minimum, the high fluorescence rate constant of the bright SLC state and its moderately efficient ISC to the triplet manifold explain the experimentally observed dual emission of the Pd complex at room temperature. |
| 478. | Menekse, Kaan; Renner, Rebecca; Mahlmeister, Bernhard; Stolte, Matthias; Würthner, Frank: Bowl-Shaped Naphthalimide-Annulated Corannulene as Nonfullerene Acceptor in Organic Solar Cells. In: Organic Materials, 02 (03), pp. 229-234, 2020. (Type: Journal Article | Links | BibTeX) @article{Menekse2020, title = {Bowl-Shaped Naphthalimide-Annulated Corannulene as Nonfullerene Acceptor in Organic Solar Cells}, author = {Kaan Menekse and Rebecca Renner and Bernhard Mahlmeister and Matthias Stolte and Frank Würthner}, doi = {10.1055/s-0040-1714283}, year = {2020}, date = {2020-01-01}, journal = {Organic Materials}, volume = {02}, number = {03}, pages = {229-234}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 479. | Pinterić, Marko; Roh, Seulki; Uykur, Ece; Hansen, Nis Hauke; Pflaum, Jens; Stolte, Matthias; Würthner, Frank; Dressel, Martin: Trapped Exciton and Large Birefringence in Cl2–NDI Revealed by Optical Spectroscopy. In: The Journal of Physical Chemistry C, 124 (32), pp. 17829-17835, 2020. (Type: Journal Article | Abstract | Links | BibTeX) @article{Pinteric2020, title = {Trapped Exciton and Large Birefringence in Cl2–NDI Revealed by Optical Spectroscopy}, author = {Marko Pinterić and Seulki Roh and Ece Uykur and Nis Hauke Hansen and Jens Pflaum and Matthias Stolte and Frank Würthner and Martin Dressel}, url = {https://doi.org/10.1021/acs.jpcc.0c05165}, doi = {10.1021/acs.jpcc.0c05165}, year = {2020}, date = {2020-01-01}, journal = {The Journal of Physical Chemistry C}, volume = {124}, number = {32}, pages = {17829-17835}, abstract = {The n-type organic semiconductor, β-phase single crystalline dichloro naphthalene diimide, Cl2–NDI, is investigated in a broad frequency range via optical spectroscopy. The temperature-dependent absorbance spectra reveal the appearance of new molecular vibration modes; several of them exhibit a pronounced splitting and abnormal red shift. In the visible spectral range, we observe a splitting of the J-band upon cooling, which we attributed to self-trapped excitons via coupling between free excitons and molecular vibrations or trapping by disorder induced Lévy states. Additionally, we discover a strong birefringence of these crystals by pronounced polarization beat over a wide frequency range.}, keywords = {}, pubstate = {published}, tppubtype = {article} } The n-type organic semiconductor, β-phase single crystalline dichloro naphthalene diimide, Cl2–NDI, is investigated in a broad frequency range via optical spectroscopy. The temperature-dependent absorbance spectra reveal the appearance of new molecular vibration modes; several of them exhibit a pronounced splitting and abnormal red shift. In the visible spectral range, we observe a splitting of the J-band upon cooling, which we attributed to self-trapped excitons via coupling between free excitons and molecular vibrations or trapping by disorder induced Lévy states. Additionally, we discover a strong birefringence of these crystals by pronounced polarization beat over a wide frequency range. |
| 480. | Luo, Yinqi; Fang, Shaomao; Zheng, Nan; Liu, Linlin; Würthner, Frank; Xie, Zengqi: Increased Electron Transport and Hole Blocking in an Aqueous Solution Processed Dye-Doped ZnO Cathode Interlayer for High Performance Organic Solar Cells. In: ACS Applied Energy Materials, 3 (2), pp. 1694-1701, 2020. (Type: Journal Article | Abstract | Links | BibTeX) @article{Luo2020, title = {Increased Electron Transport and Hole Blocking in an Aqueous Solution Processed Dye-Doped ZnO Cathode Interlayer for High Performance Organic Solar Cells}, author = {Yinqi Luo and Shaomao Fang and Nan Zheng and Linlin Liu and Frank Würthner and Zengqi Xie}, url = {https://doi.org/10.1021/acsaem.9b02176}, doi = {10.1021/acsaem.9b02176}, year = {2020}, date = {2020-01-01}, journal = {ACS Applied Energy Materials}, volume = {3}, number = {2}, pages = {1694-1701}, abstract = {In this work, we report high electron transport and hole blocking capability of hybrid photoconductive interlayer materials manufactured from an aqueous solution, which are achieved by doping perylene bisimide dyes into zinc oxide (ZnO) through the formation of ionic bonding between the organic dopants and the inorganic matrix. Benzenesulfonic acid functional groups are introduced to perylene bisimide dye molecules, which enhance the solubility of the dye molecules in water and form ionic bonds with zinc atoms during the fabrication of the hybrid thin films. The ionic bonding assisted molecular dispersion endows the hybrid thin film with full photoconductive properties, which improves electron transport by photoinduced electron transfer from organic dye molecules to the conduction band of ZnO. Especially, the hole blocking ability is also highly increased. Both increased electron transport and hole blocking are benefits to the charge selectivity of the cathode interlayer, which results in a high fill factor in organic solar cells. A power conversion efficiency of up to 15.4% is achieved on the basis of such an aqueous solution processed hybrid interlayer when using PM6:Y6 as the active layer. In addition, the optimized thermal annealing temperature for the fabrication of the hybrid thin film is as low as 150 °C, which is a benefit for the application of such photoconductive materials in flexible devices.}, keywords = {}, pubstate = {published}, tppubtype = {article} } In this work, we report high electron transport and hole blocking capability of hybrid photoconductive interlayer materials manufactured from an aqueous solution, which are achieved by doping perylene bisimide dyes into zinc oxide (ZnO) through the formation of ionic bonding between the organic dopants and the inorganic matrix. Benzenesulfonic acid functional groups are introduced to perylene bisimide dye molecules, which enhance the solubility of the dye molecules in water and form ionic bonds with zinc atoms during the fabrication of the hybrid thin films. The ionic bonding assisted molecular dispersion endows the hybrid thin film with full photoconductive properties, which improves electron transport by photoinduced electron transfer from organic dye molecules to the conduction band of ZnO. Especially, the hole blocking ability is also highly increased. Both increased electron transport and hole blocking are benefits to the charge selectivity of the cathode interlayer, which results in a high fill factor in organic solar cells. A power conversion efficiency of up to 15.4% is achieved on the basis of such an aqueous solution processed hybrid interlayer when using PM6:Y6 as the active layer. In addition, the optimized thermal annealing temperature for the fabrication of the hybrid thin film is as low as 150 °C, which is a benefit for the application of such photoconductive materials in flexible devices. |
References (last update: Sept. 23, 2024):
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Urner, Lorenz M; Sekita, Michael; Trapp, Nils; Schweizer, Bernd W; Woerle, Michael; Gisselbrecht, Jean-Paul; Boudon, Corinne; Guldi, Dirk M; Diederich, Francois EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, (1), pp. 91-108, 2015, ISSN: 1434-193X. @article{ISI:000346488900012, title = {Systematic Variation of Cyanobuta-1,3-dienes and Expanded Tetracyanoquinodimethane Analogues as Electron Acceptors in Photoactive, Rigid Porphyrin Conjugates}, author = {Lorenz M Urner and Michael Sekita and Nils Trapp and Bernd W Schweizer and Michael Woerle and Jean-Paul Gisselbrecht and Corinne Boudon and Dirk M Guldi and Francois Diederich}, doi = {10.1002/ejoc.201403252}, issn = {1434-193X}, year = {2015}, date = {2015-01-01}, journal = {EUROPEAN JOURNAL OF ORGANIC CHEMISTRY}, number = {1}, pages = {91-108}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Kirner, Sabrina V; Henkel, Christian; Guldi, Dirk M; Jr., Jackson Megiatto D; Schuster, David I Multistep energy and electron transfer processes in novel rotaxane donor-acceptor hybrids generating microsecond-lived charge separated states Journal Article CHEMICAL SCIENCE, 6 (12), pp. 7293-7304, 2015, ISSN: 2041-6520. @article{ISI:000365225300073c, title = {Multistep energy and electron transfer processes in novel rotaxane donor-acceptor hybrids generating microsecond-lived charge separated states}, author = {Sabrina V Kirner and Christian Henkel and Dirk M Guldi and Jackson Megiatto D Jr. and David I Schuster}, doi = {10.1039/c5sc02895g}, issn = {2041-6520}, year = {2015}, date = {2015-01-01}, journal = {CHEMICAL SCIENCE}, volume = {6}, number = {12}, pages = {7293-7304}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Zhang, Zuolun; Edkins, Robert M; Nitsch, Joern; Fucke, Katharina; Steffen, Andreas; Longobardi, Lauren E; Stephan, Douglas W; Lambert, Christoph; Marder, Todd B Optical and electronic properties of air-stable organoboron compounds with strongly electron-accepting bis(fluoromesityl)boryl groups Journal Article CHEMICAL SCIENCE, 6 (1), pp. 308-321, 2015, ISSN: 2041-6520. @article{ISI:000345901600034, title = {Optical and electronic properties of air-stable organoboron compounds with strongly electron-accepting bis(fluoromesityl)boryl groups}, author = {Zuolun Zhang and Robert M Edkins and Joern Nitsch and Katharina Fucke and Andreas Steffen and Lauren E Longobardi and Douglas W Stephan and Christoph Lambert and Todd B Marder}, doi = {10.1039/c4sc02410a}, issn = {2041-6520}, year = {2015}, date = {2015-01-01}, journal = {CHEMICAL SCIENCE}, volume = {6}, number = {1}, pages = {308-321}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Quiroz, Cesar Omar Ramirez; Levchuk, Levgen; Bronnbauer, Carina; Salvador, Michael; Forberich, Karen; Heumueller, Thomas; Hou, Yi; Schweizer, Peter; Spiecker, Erdmann; Brabec, Christoph J Pushing efficiency limits for semitransparent perovskite solar cells Journal Article JOURNAL OF MATERIALS CHEMISTRY A, 3 (47), pp. 24071-24081, 2015, ISSN: 2050-7488. @article{ISI:000365205000051c, title = {Pushing efficiency limits for semitransparent perovskite solar cells}, author = {Cesar Omar Ramirez Quiroz and Levgen Levchuk and Carina Bronnbauer and Michael Salvador and Karen Forberich and Thomas Heumueller and Yi Hou and Peter Schweizer and Erdmann Spiecker and Christoph J Brabec}, doi = {10.1039/c5ta08450d}, issn = {2050-7488}, year = {2015}, date = {2015-01-01}, journal = {JOURNAL OF MATERIALS CHEMISTRY A}, volume = {3}, number = {47}, pages = {24071-24081}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Baessler, Heinz; Koehler, Anna ``Hot or cold'': how do charge transfer states at the donor-acceptor interface of an organic solar cell dissociate? Journal Article PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 17 (43), pp. 28451-28462, 2015, ISSN: 1463-9076. @article{ISI:000364024100002c, title = {``Hot or cold'': how do charge transfer states at the donor-acceptor interface of an organic solar cell dissociate?}, author = {Heinz Baessler and Anna Koehler}, doi = {10.1039/c5cp04110d}, issn = {1463-9076}, year = {2015}, date = {2015-01-01}, journal = {PHYSICAL CHEMISTRY CHEMICAL PHYSICS}, volume = {17}, number = {43}, pages = {28451-28462}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
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Waterloo, Andreas R; Lippert, Rainer; Jux, Norbert; Tykwinski, Rik R Axial coordination of pyridyl-containing pentacenes to porphyrins Journal Article JOURNAL OF COORDINATION CHEMISTRY, 68 (17-18, SI), pp. 3088-3098, 2015, ISSN: 0095-8972. @article{ISI:000361533600011c, title = {Axial coordination of pyridyl-containing pentacenes to porphyrins}, author = {Andreas R Waterloo and Rainer Lippert and Norbert Jux and Rik R Tykwinski}, doi = {10.1080/00958972.2015.1057711}, issn = {0095-8972}, year = {2015}, date = {2015-01-01}, journal = {JOURNAL OF COORDINATION CHEMISTRY}, volume = {68}, number = {17-18, SI}, pages = {3088-3098}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Zango, German; Zirzlmeier, Johannes; Claessens, Christian G; Clark, Timothy; Martinez-Diaz, Victoria M; Guldi, Dirk M; Torres, Tomas A push-pull unsymmetrical subphthalocyanine dimer Journal Article CHEMICAL SCIENCE, 6 (10), pp. 5571-5577, 2015, ISSN: 2041-6520. @article{ISI:000361212000026c, title = {A push-pull unsymmetrical subphthalocyanine dimer}, author = {German Zango and Johannes Zirzlmeier and Christian G Claessens and Timothy Clark and Victoria M Martinez-Diaz and Dirk M Guldi and Tomas Torres}, doi = {10.1039/c5sc01709b}, issn = {2041-6520}, year = {2015}, date = {2015-01-01}, journal = {CHEMICAL SCIENCE}, volume = {6}, number = {10}, pages = {5571-5577}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Zhang, Zuolun; Edkins, Robert M; Haehnel, Martin; Wehner, Marius; Eichhorn, Antonius; Mailaender, Lisa; Meier, Michael; Brand, Johannes; Brede, Franziska; Mueller-Buschbaum, Klaus; Braunschweig, Holger; Marder, Todd B Taming the beast: fluoromesityl groups induce a dramatic stability enhancement in boroles Journal Article CHEMICAL SCIENCE, 6 (10), pp. 5922-5927, 2015, ISSN: 2041-6520. @article{ISI:000361212000069c, title = {Taming the beast: fluoromesityl groups induce a dramatic stability enhancement in boroles}, author = {Zuolun Zhang and Robert M Edkins and Martin Haehnel and Marius Wehner and Antonius Eichhorn and Lisa Mailaender and Michael Meier and Johannes Brand and Franziska Brede and Klaus Mueller-Buschbaum and Holger Braunschweig and Todd B Marder}, doi = {10.1039/c5sc02205c}, issn = {2041-6520}, year = {2015}, date = {2015-01-01}, journal = {CHEMICAL SCIENCE}, volume = {6}, number = {10}, pages = {5922-5927}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Kirner, Sabrina V; Arteaga, Danny; Henkel, Christian; Margrat, Johannes T; Alegret, Nuria; Ohkubo, Kei; Insuasty, Braulio; Ortiz, Alejandro; Martin, Nazario; Echegoyen, Luis; Fukuzumi, Shunichi; Clark, Timothy; Guldi, Dirk M On-off switch of charge-separated states of pyridine-vinylene-linked porphyrin-C-60 conjugates detected by EPR Journal Article CHEMICAL SCIENCE, 6 (10), pp. 5994-6007, 2015, ISSN: 2041-6520. @article{ISI:000361212000078c, title = {On-off switch of charge-separated states of pyridine-vinylene-linked porphyrin-C-60 conjugates detected by EPR}, author = {Sabrina V Kirner and Danny Arteaga and Christian Henkel and Johannes T Margrat and Nuria Alegret and Kei Ohkubo and Braulio Insuasty and Alejandro Ortiz and Nazario Martin and Luis Echegoyen and Shunichi Fukuzumi and Timothy Clark and Dirk M Guldi}, doi = {10.1039/c5sc02051d}, issn = {2041-6520}, year = {2015}, date = {2015-01-01}, journal = {CHEMICAL SCIENCE}, volume = {6}, number = {10}, pages = {5994-6007}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Sarkar, Kuhu; Braden, Erik V; Bonke, Shannon A; Bach, Udo; Mueller-Buschbaum, Peter Screen-Printing of ZnO Nanostructures from Sol-Gel Solutions for Their Application in Dye-Sensitized Solar Cells Journal Article CHEMSUSCHEM, 8 (16), pp. 2696-2704, 2015, ISSN: 1864-5631. @article{ISI:000360312000014c, title = {Screen-Printing of ZnO Nanostructures from Sol-Gel Solutions for Their Application in Dye-Sensitized Solar Cells}, author = {Kuhu Sarkar and Erik V Braden and Shannon A Bonke and Udo Bach and Peter Mueller-Buschbaum}, doi = {10.1002/cssc.201500450}, issn = {1864-5631}, year = {2015}, date = {2015-01-01}, journal = {CHEMSUSCHEM}, volume = {8}, number = {16}, pages = {2696-2704}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Mueller, C J; Gann, E; McNeill, C R; Thelakkat, M Influence of fluorination in pi-extended backbone polydiketopyrrolopyrroles on charge carrier mobility and depth-dependent molecular alignment Journal Article JOURNAL OF MATERIALS CHEMISTRY C, 3 (34), pp. 8916-8925, 2015, ISSN: 2050-7526. @article{ISI:000360120400022c, title = {Influence of fluorination in pi-extended backbone polydiketopyrrolopyrroles on charge carrier mobility and depth-dependent molecular alignment}, author = {C J Mueller and E Gann and C R McNeill and M Thelakkat}, doi = {10.1039/c5tc01948f}, issn = {2050-7526}, year = {2015}, date = {2015-01-01}, journal = {JOURNAL OF MATERIALS CHEMISTRY C}, volume = {3}, number = {34}, pages = {8916-8925}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Grob, Stefan; Bartynski, Andrew N; Opitz, Andreas; Gruber, Mark; Grassl, Florian; Meister, Eduard; Linderl, Theresa; Hoermann, Ulrich; Lorch, Christopher; Moons, Ellen; Schreiber, Frank; Thompson, Mark E; Bruetting, Wolfgang Solvent vapor annealing on perylene-based organic solar cells Journal Article JOURNAL OF MATERIALS CHEMISTRY A, 3 (30), pp. 15700-15709, 2015, ISSN: 2050-7488. @article{ISI:000358211700042c, title = {Solvent vapor annealing on perylene-based organic solar cells}, author = {Stefan Grob and Andrew N Bartynski and Andreas Opitz and Mark Gruber and Florian Grassl and Eduard Meister and Theresa Linderl and Ulrich Hoermann and Christopher Lorch and Ellen Moons and Frank Schreiber and Mark E Thompson and Wolfgang Bruetting}, doi = {10.1039/c5ta02806j}, issn = {2050-7488}, year = {2015}, date = {2015-01-01}, journal = {JOURNAL OF MATERIALS CHEMISTRY A}, volume = {3}, number = {30}, pages = {15700-15709}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Moreira, Luis; Calbo, Joaquin; Calderon, Rafael Krick M; Santos, Jose; Illescas, Beatriz M; Arago, Juan; Nierengarten, Jean-Francois; Guldi, Dirk M; Orti, Enrique; Martin, Nazario Unveiling the nature of supramolecular crown ether-C-60 interactions Journal Article CHEMICAL SCIENCE, 6 (8), pp. 4426-4432, 2015, ISSN: 2041-6520. @article{ISI:000357931700002c, title = {Unveiling the nature of supramolecular crown ether-C-60 interactions}, author = {Luis Moreira and Joaquin Calbo and Rafael Krick M Calderon and Jose Santos and Beatriz M Illescas and Juan Arago and Jean-Francois Nierengarten and Dirk M Guldi and Enrique Orti and Nazario Martin}, doi = {10.1039/c5sc00850f}, issn = {2041-6520}, year = {2015}, date = {2015-01-01}, journal = {CHEMICAL SCIENCE}, volume = {6}, number = {8}, pages = {4426-4432}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Hexemer, Alexander; Mueller-Buschbaum, Peter Advanced grazing-incidence techniques for modern soft-matter materials analysis Journal Article IUCRJ, 2 (1), pp. 106-125, 2015, ISSN: 2052-2525. @article{ISI:000356865900014c, title = {Advanced grazing-incidence techniques for modern soft-matter materials analysis}, author = {Alexander Hexemer and Peter Mueller-Buschbaum}, doi = {10.1107/S2052252514024178}, issn = {2052-2525}, year = {2015}, date = {2015-01-01}, journal = {IUCRJ}, volume = {2}, number = {1}, pages = {106-125}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Rudolf, Marc; Trukhina, Olga; Perles, Josefina; Feng, Lai; Akasaka, Takeshi; Torres, Tomas; Guldi, Dirk M Taming C-60 fullerene: tuning intramolecular photoinduced electron transfer process with subphthalocyanines Journal Article CHEMICAL SCIENCE, 6 (7), pp. 4141-4147, 2015, ISSN: 2041-6520. @article{ISI:000356176200060c, title = {Taming C-60 fullerene: tuning intramolecular photoinduced electron transfer process with subphthalocyanines}, author = {Marc Rudolf and Olga Trukhina and Josefina Perles and Lai Feng and Takeshi Akasaka and Tomas Torres and Dirk M Guldi}, doi = {10.1039/c5sc00223k}, issn = {2041-6520}, year = {2015}, date = {2015-01-01}, journal = {CHEMICAL SCIENCE}, volume = {6}, number = {7}, pages = {4141-4147}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Kubas, Adam; Gajdos, Fruzsina; Heck, Alexander; Oberhofer, Harald; Elstner, Marcus; Blumberger, Jochen Electronic couplings for molecular charge transfer: benchmarking CDFT, FODFT and FODFTB against high-level ab initio calculations. II Journal Article PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 17 (22), pp. 14342-14354, 2015, ISSN: 1463-9076. @article{ISI:000355633400009c, title = {Electronic couplings for molecular charge transfer: benchmarking CDFT, FODFT and FODFTB against high-level ab initio calculations. II}, author = {Adam Kubas and Fruzsina Gajdos and Alexander Heck and Harald Oberhofer and Marcus Elstner and Jochen Blumberger}, doi = {10.1039/c4cp04749d}, issn = {1463-9076}, year = {2015}, date = {2015-01-01}, journal = {PHYSICAL CHEMISTRY CHEMICAL PHYSICS}, volume = {17}, number = {22}, pages = {14342-14354}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Wang, Zhengbang; Heinke, Lars; Jelic, Jelena; Cakici, Murat; Dommaschk, Marcel; Maurer, Reinhard J; Oberhofer, Harald; Grosjean, Sylvain; Herges, Rainer; Braese, Stefan; Reuter, Karsten; Woell, Christof Photoswitching in nanoporous, crystalline solids: an experimental and theoretical study for azobenzene linkers incorporated in MOFs Journal Article PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 17 (22), pp. 14582-14587, 2015, ISSN: 1463-9076. @article{ISI:000355633400034c, title = {Photoswitching in nanoporous, crystalline solids: an experimental and theoretical study for azobenzene linkers incorporated in MOFs}, author = {Zhengbang Wang and Lars Heinke and Jelena Jelic and Murat Cakici and Marcel Dommaschk and Reinhard J Maurer and Harald Oberhofer and Sylvain Grosjean and Rainer Herges and Stefan Braese and Karsten Reuter and Christof Woell}, doi = {10.1039/c5cp01372k}, issn = {1463-9076}, year = {2015}, date = {2015-01-01}, journal = {PHYSICAL CHEMISTRY CHEMICAL PHYSICS}, volume = {17}, number = {22}, pages = {14582-14587}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Nitsch, Joern; Kleeberg, Christian; Froehlich, Roland; Steffen, Andreas Luminescent copper(I) halide and pseudohalide phenanthroline complexes revisited: simple structures, complicated excited state behavior Journal Article DALTON TRANSACTIONS, 44 (15), pp. 6944-6960, 2015, ISSN: 1477-9226. @article{ISI:000352271900028c, title = {Luminescent copper(I) halide and pseudohalide phenanthroline complexes revisited: simple structures, complicated excited state behavior}, author = {Joern Nitsch and Christian Kleeberg and Roland Froehlich and Andreas Steffen}, doi = {10.1039/c4dt03706e}, issn = {1477-9226}, year = {2015}, date = {2015-01-01}, journal = {DALTON TRANSACTIONS}, volume = {44}, number = {15}, pages = {6944-6960}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Hermerschmidt, Felix; Kalogirou, Andreas S; Min, Jie; Zissimou, Georgia A; Tuladhar, Sachetan M; Ameri, Tayebeh; Faber, Hendrik; Itskos, Grigorios; Choulis, Stelios A; Anthopoulos, Thomas D; Bradley, Donal D C; Nelson, Jenny; Brabec, Christoph J; Koutentis, Panayiotis A 4H-1,2,6-Thiadiazin-4-one-containing small molecule donors and additive effects on their performance in solution-processed organic solar cells Journal Article JOURNAL OF MATERIALS CHEMISTRY C, 3 (10), pp. 2358-2365, 2015, ISSN: 2050-7526. @article{ISI:000350693200024c, title = {4H-1,2,6-Thiadiazin-4-one-containing small molecule donors and additive effects on their performance in solution-processed organic solar cells}, author = {Felix Hermerschmidt and Andreas S Kalogirou and Jie Min and Georgia A Zissimou and Sachetan M Tuladhar and Tayebeh Ameri and Hendrik Faber and Grigorios Itskos and Stelios A Choulis and Thomas D Anthopoulos and Donal D C Bradley and Jenny Nelson and Christoph J Brabec and Panayiotis A Koutentis}, doi = {10.1039/c4tc02931c}, issn = {2050-7526}, year = {2015}, date = {2015-01-01}, journal = {JOURNAL OF MATERIALS CHEMISTRY C}, volume = {3}, number = {10}, pages = {2358-2365}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Lenz, Thomas; Richter, Moses; Matt, Gebhard J; Luechinger, Norman A; Halim, Samuel C; Heiss, Wolfgang; Brabec, Christoph J Charge transport in nanoparticular thin films of zinc oxide and aluminum-doped zinc oxide Journal Article JOURNAL OF MATERIALS CHEMISTRY C, 3 (7), pp. 1468-1472, 2015, ISSN: 2050-7526. @article{ISI:000349756800006c, title = {Charge transport in nanoparticular thin films of zinc oxide and aluminum-doped zinc oxide}, author = {Thomas Lenz and Moses Richter and Gebhard J Matt and Norman A Luechinger and Samuel C Halim and Wolfgang Heiss and Christoph J Brabec}, doi = {10.1039/c4tc01969e}, issn = {2050-7526}, year = {2015}, date = {2015-01-01}, journal = {JOURNAL OF MATERIALS CHEMISTRY C}, volume = {3}, number = {7}, pages = {1468-1472}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Ball, James M; Stranks, Samuel D; Hoerantner, Maximilian T; Huettner, Sven; Zhang, Wei; Crossland, Edward J W; Ramirez, Ivan; Riede, Moritz; Johnston, Michael B; Friend, Richard H; Snaith, Henry J Optical properties and limiting photocurrent of thin-film perovskite solar cells Journal Article ENERGY & ENVIRONMENTAL SCIENCE, 8 (2), pp. 602-609, 2015, ISSN: 1754-5692. @article{ISI:000349616900019c, title = {Optical properties and limiting photocurrent of thin-film perovskite solar cells}, author = {James M Ball and Samuel D Stranks and Maximilian T Hoerantner and Sven Huettner and Wei Zhang and Edward J W Crossland and Ivan Ramirez and Moritz Riede and Michael B Johnston and Richard H Friend and Henry J Snaith}, doi = {10.1039/c4ee03224a}, issn = {1754-5692}, year = {2015}, date = {2015-01-01}, journal = {ENERGY & ENVIRONMENTAL SCIENCE}, volume = {8}, number = {2}, pages = {602-609}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Ehrat, Florian; Simon, Thomas; Stolarczyk, Jacek K; Feldmann, Jochen Size Effects on Photocatalytic H-2 Generation with CdSe/CdS Core-Shell Nanocrystals Journal Article ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS, 229 (1-2, SI), pp. 205-219, 2015, ISSN: 0942-9352. @article{ISI:000349812500012c, title = {Size Effects on Photocatalytic H-2 Generation with CdSe/CdS Core-Shell Nanocrystals}, author = {Florian Ehrat and Thomas Simon and Jacek K Stolarczyk and Jochen Feldmann}, doi = {10.1515/zpch-2014-0635}, issn = {0942-9352}, year = {2015}, date = {2015-01-01}, journal = {ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS}, volume = {229}, number = {1-2, SI}, pages = {205-219}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Koerstgens, V; Proeller, S; Buchmann, T; Gonzalez, Mosegui D; Song, L; Yao, Y; Wang, W; Werhahn, J; Santoro, G; Roth, S V; Iglev, H; Kienbergerc, R; Mueller-Buschbaum, P Laser-ablated titania nanoparticles for aqueous processed hybrid solar cells Journal Article NANOSCALE, 7 (7), pp. 2900-2904, 2015, ISSN: 2040-3364. @article{ISI:000349473200011c, title = {Laser-ablated titania nanoparticles for aqueous processed hybrid solar cells}, author = {V Koerstgens and S Proeller and T Buchmann and Mosegui D Gonzalez and L Song and Y Yao and W Wang and J Werhahn and G Santoro and S V Roth and H Iglev and R Kienbergerc and P Mueller-Buschbaum}, doi = {10.1039/c4nr06782g}, issn = {2040-3364}, year = {2015}, date = {2015-01-01}, journal = {NANOSCALE}, volume = {7}, number = {7}, pages = {2900-2904}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Deschler, Felix; Riedel, Daniel; Deak, Andras; Ecker, Bernhard; von Hauff, Elizabeth; Como, Enrico Da Imaging of morphological changes and phase segregation in doped polymeric semiconductors Journal Article SYNTHETIC METALS, 199 , pp. 381-387, 2015, ISSN: 0379-6779. @article{ISI:000348954000054c, title = {Imaging of morphological changes and phase segregation in doped polymeric semiconductors}, author = {Felix Deschler and Daniel Riedel and Andras Deak and Bernhard Ecker and Elizabeth von Hauff and Enrico Da Como}, doi = {10.1016/j.synthmet.2014.11.037}, issn = {0379-6779}, year = {2015}, date = {2015-01-01}, journal = {SYNTHETIC METALS}, volume = {199}, pages = {381-387}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Guo, Fei; Azimi, Hamed; Hou, Yi; Przybilla, Thomas; Hu, Mengyao; Bronnbauer, Carina; Langner, Stefan; Spiecker, Erdmann; Forberich, Karen; Brabec, Christoph J High-performance semitransparent perovskite solar cells with solution-processed silver nanowires as top electrodes Journal Article NANOSCALE, 7 (5), pp. 1642-1649, 2015, ISSN: 2040-3364. @article{ISI:000348348300013c, title = {High-performance semitransparent perovskite solar cells with solution-processed silver nanowires as top electrodes}, author = {Fei Guo and Hamed Azimi and Yi Hou and Thomas Przybilla and Mengyao Hu and Carina Bronnbauer and Stefan Langner and Erdmann Spiecker and Karen Forberich and Christoph J Brabec}, doi = {10.1039/c4nr06033d}, issn = {2040-3364}, year = {2015}, date = {2015-01-01}, journal = {NANOSCALE}, volume = {7}, number = {5}, pages = {1642-1649}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
He, Tao; Stolte, Matthias; Burschka, Christian; Hansen, Nis Hauke; Musiol, Thomas; Kaelblein, Daniel; Pflaum, Jens; Tao, Xutang; Brill, Jochen; Wuerthner, Frank Single-crystal field-effect transistors of new Cl-2-NDI polymorph processed by sublimation in air Journal Article Nature Communications, 6 , 2015, ISSN: 2041-1723. @article{ISI:000348810700010c, title = {Single-crystal field-effect transistors of new Cl-2-NDI polymorph processed by sublimation in air}, author = {Tao He and Matthias Stolte and Christian Burschka and Nis Hauke Hansen and Thomas Musiol and Daniel Kaelblein and Jens Pflaum and Xutang Tao and Jochen Brill and Frank Wuerthner}, doi = {10.1038/ncomms6954}, issn = {2041-1723}, year = {2015}, date = {2015-01-01}, journal = {Nature Communications}, volume = {6}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Loehner, Alexander; Carey, Anne-Marie; Hacking, Kirsty; Picken, Nichola; Kelly, Sharon; Cogdell, Richard; Koehler, Juergen The origin of the split B800 absorption peak in the LH2 complexes from Allochromatium vinosum Journal Article PHOTOSYNTHESIS RESEARCH, 123 (1), pp. 23-31, 2015, ISSN: 0166-8595. @article{ISI:000348379100002c, title = {The origin of the split B800 absorption peak in the LH2 complexes from Allochromatium vinosum}, author = {Alexander Loehner and Anne-Marie Carey and Kirsty Hacking and Nichola Picken and Sharon Kelly and Richard Cogdell and Juergen Koehler}, doi = {10.1007/s11120-014-0036-2}, issn = {0166-8595}, year = {2015}, date = {2015-01-01}, journal = {PHOTOSYNTHESIS RESEARCH}, volume = {123}, number = {1}, pages = {23-31}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Neyshtadt, Shany; Kriegel, Ilka; Rodriguez-Fernandez, Jessica; Hug, Stephan; Lotsch, Bettina; Como, Enrico Da Electronically coupled hybrid structures by graphene oxide directed self-assembly of Cu2-xS nanocrystals Journal Article NANOSCALE, 7 (15), pp. 6675-6682, 2015, ISSN: 2040-3364. @article{ISI:000352277500034b, title = {Electronically coupled hybrid structures by graphene oxide directed self-assembly of Cu2-xS nanocrystals}, author = {Shany Neyshtadt and Ilka Kriegel and Jessica Rodriguez-Fernandez and Stephan Hug and Bettina Lotsch and Enrico Da Como}, doi = {10.1039/c5nr00656b}, issn = {2040-3364}, year = {2015}, date = {2015-01-01}, journal = {NANOSCALE}, volume = {7}, number = {15}, pages = {6675-6682}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Scheele, M; Bruetting, W; Schreiber, F Coupled organic-inorganic nanostructures (COIN) Journal Article PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 17 (1), pp. 97-111, 2015, ISSN: 1463-9076. @article{ISI:000346235600006b, title = {Coupled organic-inorganic nanostructures (COIN)}, author = {M Scheele and W Bruetting and F Schreiber}, doi = {10.1039/c4cp03094j}, issn = {1463-9076}, year = {2015}, date = {2015-01-01}, journal = {PHYSICAL CHEMISTRY CHEMICAL PHYSICS}, volume = {17}, number = {1}, pages = {97-111}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Medina, Dana D; Rotter, Julian M; Hu, Yinghong; Dogru, Mirjam; Werner, Veronika; Auras, Florian; Markiewicz, John T; Knochel, Paul; Bein, Thomas Room Temperature Synthesis of Covalent-Organic Framework Films through Vapor-Assisted Conversion Journal Article JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 137 (3), pp. 1016-1019, 2015, ISSN: 0002-7863. @article{ISI:000348690100003b, title = {Room Temperature Synthesis of Covalent-Organic Framework Films through Vapor-Assisted Conversion}, author = {Dana D Medina and Julian M Rotter and Yinghong Hu and Mirjam Dogru and Veronika Werner and Florian Auras and John T Markiewicz and Paul Knochel and Thomas Bein}, doi = {10.1021/ja510895m}, issn = {0002-7863}, year = {2015}, date = {2015-01-01}, journal = {JOURNAL OF THE AMERICAN CHEMICAL SOCIETY}, volume = {137}, number = {3}, pages = {1016-1019}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Schulze, Marcus; Steffen, Andreas; Wuerthner, Frank Near-IR Phosphorescent Ruthenium(II) and Iridium(III) Perylene Bisimide Metal Complexes Journal Article ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 54 (5), pp. 1570-1573, 2015, ISSN: 1433-7851. @article{ISI:000348713900030b, title = {Near-IR Phosphorescent Ruthenium(II) and Iridium(III) Perylene Bisimide Metal Complexes}, author = {Marcus Schulze and Andreas Steffen and Frank Wuerthner}, doi = {10.1002/anie.201410437}, issn = {1433-7851}, year = {2015}, date = {2015-01-01}, journal = {ANGEWANDTE CHEMIE-INTERNATIONAL EDITION}, volume = {54}, number = {5}, pages = {1570-1573}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Chernick, Erin T; Casillas, Ruben; Zirzlmeier, Johannes; Gardner, Daniel M; Gruber, Marco; Kropp, Henning; Meyer, Karsten; Wasielewski, Michael R; Guldi, Dirk M; Tykwinski, Rik R Pentacene Appended to a TEMPO Stable Free Radical: The Effect of Magnetic Exchange Coupling on Photoexcited Pentacene Journal Article JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 137 (2), pp. 857-863, 2015, ISSN: 0002-7863. @article{ISI:000348483400051b, title = {Pentacene Appended to a TEMPO Stable Free Radical: The Effect of Magnetic Exchange Coupling on Photoexcited Pentacene}, author = {Erin T Chernick and Ruben Casillas and Johannes Zirzlmeier and Daniel M Gardner and Marco Gruber and Henning Kropp and Karsten Meyer and Michael R Wasielewski and Dirk M Guldi and Rik R Tykwinski}, doi = {10.1021/ja510958k}, issn = {0002-7863}, year = {2015}, date = {2015-01-01}, journal = {JOURNAL OF THE AMERICAN CHEMICAL SOCIETY}, volume = {137}, number = {2}, pages = {857-863}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Wang, Weijia; Proeller, Stephan; Niedermeier, Martin A; Koerstgens, Volker; Philipp, Martine; Su, Bo; Gonzalez, Daniel Mosegui; Yu, Shun; Roth, Stephan V; Mueller-Buschbaum, Peter Development of the Morphology during Functional Stack Build-up of P3HT:PCBM Bulk Heterojunction Solar Cells with Inverted Geometry Journal Article ACS APPLIED MATERIALS & INTERFACES, 7 (1), pp. 602-610, 2015, ISSN: 1944-8244. @article{ISI:000348085200072b, title = {Development of the Morphology during Functional Stack Build-up of P3HT:PCBM Bulk Heterojunction Solar Cells with Inverted Geometry}, author = {Weijia Wang and Stephan Proeller and Martin A Niedermeier and Volker Koerstgens and Martine Philipp and Bo Su and Daniel Mosegui Gonzalez and Shun Yu and Stephan V Roth and Peter Mueller-Buschbaum}, doi = {10.1021/am5067749}, issn = {1944-8244}, year = {2015}, date = {2015-01-01}, journal = {ACS APPLIED MATERIALS & INTERFACES}, volume = {7}, number = {1}, pages = {602-610}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Min, Jie; Zhang, Zhi-Guo; Hou, Yi; Quiroz, Cesar Omar Ramirez; Przybilla, Thomas; Bronnbauer, Carina; Guo, Fei; Forberich, Karen; Azimi, Hamed; Ameri, Tayebeh; Spiecker, Erdmann; Li, Yongfang; Brabec, Christoph J Interface Engineering of Perovskite Hybrid Solar Cells with Solution-Processed Perylene-Diimide Heterojunctions toward High Performance Journal Article CHEMISTRY OF MATERIALS, 27 (1), pp. 227-234, 2015, ISSN: 0897-4756. @article{ISI:000348085300030b, title = {Interface Engineering of Perovskite Hybrid Solar Cells with Solution-Processed Perylene-Diimide Heterojunctions toward High Performance}, author = {Jie Min and Zhi-Guo Zhang and Yi Hou and Cesar Omar Ramirez Quiroz and Thomas Przybilla and Carina Bronnbauer and Fei Guo and Karen Forberich and Hamed Azimi and Tayebeh Ameri and Erdmann Spiecker and Yongfang Li and Christoph J Brabec}, doi = {10.1021/cm5037919}, issn = {0897-4756}, year = {2015}, date = {2015-01-01}, journal = {CHEMISTRY OF MATERIALS}, volume = {27}, number = {1}, pages = {227-234}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Nikkonen, Taru; Oliva, Maria Moreno; Kahnt, Axel; Muuronen, Mikko; Helaja, Juho; Guldi, Dirk M Photoinduced Charge Transfer in a Conformational Switching Chlorin Dimer-Azafulleroid in Polar and Nonpolar Media Journal Article CHEMISTRY-A EUROPEAN JOURNAL, 21 (2), pp. 590-600, 2015, ISSN: 0947-6539. @article{ISI:000347231300014b, title = {Photoinduced Charge Transfer in a Conformational Switching Chlorin Dimer-Azafulleroid in Polar and Nonpolar Media}, author = {Taru Nikkonen and Maria Moreno Oliva and Axel Kahnt and Mikko Muuronen and Juho Helaja and Dirk M Guldi}, doi = {10.1002/chem.201404786}, issn = {0947-6539}, year = {2015}, date = {2015-01-01}, journal = {CHEMISTRY-A EUROPEAN JOURNAL}, volume = {21}, number = {2}, pages = {590-600}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Ji, Lei; Fucke, Katharina; Bose, Shubhankar Kumar; Marder, Todd B Iridium-Catalyzed Borylation of Pyrene: Irreversibility and the Influence of Ligand on Selectivity Journal Article JOURNAL OF ORGANIC CHEMISTRY, 80 (1), pp. 661-665, 2015, ISSN: 0022-3263. @article{ISI:000347506400069b, title = {Iridium-Catalyzed Borylation of Pyrene: Irreversibility and the Influence of Ligand on Selectivity}, author = {Lei Ji and Katharina Fucke and Shubhankar Kumar Bose and Todd B Marder}, doi = {10.1021/jo5024014}, issn = {0022-3263}, year = {2015}, date = {2015-01-01}, journal = {JOURNAL OF ORGANIC CHEMISTRY}, volume = {80}, number = {1}, pages = {661-665}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Zhang, Zuolun; Edkins, Robert M; Nitsch, Joern; Fucke, Katharina; Eichhorn, Antonius; Steffen, Andreas; Wang, Yue; Marder, Todd B D-pi-A Triarylboron Compounds with Tunable Push-Pull Character Achieved by Modification of Both the Donor and Acceptor Moieties Journal Article CHEMISTRY-A EUROPEAN JOURNAL, 21 (1), pp. 177-190, 2015, ISSN: 0947-6539. @article{ISI:000346735000018b, title = {D-pi-A Triarylboron Compounds with Tunable Push-Pull Character Achieved by Modification of Both the Donor and Acceptor Moieties}, author = {Zuolun Zhang and Robert M Edkins and Joern Nitsch and Katharina Fucke and Antonius Eichhorn and Andreas Steffen and Yue Wang and Todd B Marder}, doi = {10.1002/chem.201405621}, issn = {0947-6539}, year = {2015}, date = {2015-01-01}, journal = {CHEMISTRY-A EUROPEAN JOURNAL}, volume = {21}, number = {1}, pages = {177-190}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Nowak-Krol, Agnieszka; Fimmel, Benjamin; Son, Minjung; Kim, Dongho; Wuerthner, Frank FARADAY DISCUSSIONS, 185 , pp. 507-527, 2015, ISSN: 1359-6640. @article{ISI:000366909400029b, title = {Photoinduced electron transfer (PET) versus excimer formation in supramolecular p/n-heterojunctions of perylene bisimide dyes and implications for organic photovoltaics}, author = {Agnieszka Nowak-Krol and Benjamin Fimmel and Minjung Son and Dongho Kim and Frank Wuerthner}, doi = {10.1039/c5fd00052a}, issn = {1359-6640}, year = {2015}, date = {2015-01-01}, journal = {FARADAY DISCUSSIONS}, volume = {185}, pages = {507-527}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
2014 |
Calik, Mona; Auras, Florian; Salonen, Laura M; Bader, Kathrin; Grill, Irene; Handloser, Matthias; Medina, Dana D; Dogru, Mirjam; Loebermann, Florian; Trauner, Dirk; Hartschuh, Achim; Bein, Thomas Extraction of Photogenerated Electrons and Holes from a Covalent Organic Framework Integrated Heterojunction Journal Article JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 136 (51), pp. 17802-17807, 2014, ISSN: 0002-7863. @article{ISI:000347139200017, title = {Extraction of Photogenerated Electrons and Holes from a Covalent Organic Framework Integrated Heterojunction}, author = {Mona Calik and Florian Auras and Laura M Salonen and Kathrin Bader and Irene Grill and Matthias Handloser and Dana D Medina and Mirjam Dogru and Florian Loebermann and Dirk Trauner and Achim Hartschuh and Thomas Bein}, doi = {10.1021/ja509551m}, issn = {0002-7863}, year = {2014}, date = {2014-12-01}, journal = {JOURNAL OF THE AMERICAN CHEMICAL SOCIETY}, volume = {136}, number = {51}, pages = {17802-17807}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Strauss, Volker; Margraf, Johannes T; Dolle, Christian; Butz, Benjamin; Nacken, Thomas J; Walter, Johannes; Bauer, Walter; Peukert, Wolfgang; Spiecker, Erdmann; Clark, Timothy; Guldi, Dirk M Carbon Nanodots: Toward a Comprehensive Understanding of Their Photoluminescence Journal Article JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 136 (49), pp. 17308-17316, 2014, ISSN: 0002-7863. @article{ISI:000346544200048, title = {Carbon Nanodots: Toward a Comprehensive Understanding of Their Photoluminescence}, author = {Volker Strauss and Johannes T Margraf and Christian Dolle and Benjamin Butz and Thomas J Nacken and Johannes Walter and Walter Bauer and Wolfgang Peukert and Erdmann Spiecker and Timothy Clark and Dirk M Guldi}, doi = {10.1021/ja510183c}, issn = {0002-7863}, year = {2014}, date = {2014-12-01}, journal = {JOURNAL OF THE AMERICAN CHEMICAL SOCIETY}, volume = {136}, number = {49}, pages = {17308-17316}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Consani, Cristina; Ruetzel, Stefan; Nuernberger, Patrick; Brixner, Tobias Quantum Control Spectroscopy of Competing Reaction Pathways in a Molecular Switch Journal Article JOURNAL OF PHYSICAL CHEMISTRY A, 118 (48), pp. 11364-11372, 2014, ISSN: 1089-5639. @article{ISI:000345892200004, title = {Quantum Control Spectroscopy of Competing Reaction Pathways in a Molecular Switch}, author = {Cristina Consani and Stefan Ruetzel and Patrick Nuernberger and Tobias Brixner}, doi = {10.1021/jp509382m}, issn = {1089-5639}, year = {2014}, date = {2014-12-01}, journal = {JOURNAL OF PHYSICAL CHEMISTRY A}, volume = {118}, number = {48}, pages = {11364-11372}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
Merdasa, Aboma; Jimenez, Angel J; Camacho, Rafael; Meyer, Matthias; Wuerthner, Frank; Scheblykin, Ivan G Single Levy States-Disorder Induced Energy Funnels in Molecular Aggregates Journal Article NANO LETTERS, 14 (12), pp. 6774-6781, 2014, ISSN: 1530-6984. @article{ISI:000346322800005, title = {Single Levy States-Disorder Induced Energy Funnels in Molecular Aggregates}, author = {Aboma Merdasa and Angel J Jimenez and Rafael Camacho and Matthias Meyer and Frank Wuerthner and Ivan G Scheblykin}, doi = {10.1021/nl5021188}, issn = {1530-6984}, year = {2014}, date = {2014-12-01}, journal = {NANO LETTERS}, volume = {14}, number = {12}, pages = {6774-6781}, keywords = {}, pubstate = {published}, tppubtype = {article} } |