Search references:
| 1. | Kuhn, Meike; Wenzel, Felix A; Greve, Christopher; Kreger, Klaus; Schwartzkopf, Matthias; Schmidt, Hans-Werner; Grüninger, Helen; Herzig, Eva M: Tailored Supramolecular Additives to Control the Crystallization Process and Morphology of MAPbI3. In: Small, 21 (9), pp. 2410230, 2025, ISSN: 1613-6810. (Type: Journal Article | Abstract | Links | BibTeX) @article{Kuhn2025, title = {Tailored Supramolecular Additives to Control the Crystallization Process and Morphology of MAPbI3}, author = {Meike Kuhn and Felix A Wenzel and Christopher Greve and Klaus Kreger and Matthias Schwartzkopf and Hans-Werner Schmidt and Helen Grüninger and Eva M Herzig}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/smll.202410230}, doi = {https://doi.org/10.1002/smll.202410230}, issn = {1613-6810}, year = {2025}, date = {2025-02-05}, journal = {Small}, volume = {21}, number = {9}, pages = {2410230}, abstract = {Abstract Perovskite films feature unique optoelectronic properties, rendering them promising for electronic devices. The properties depend on the morphology on a broad range of length scales from nanometers to millimeters, influenced by a variety of factors. However, controlling the morphology is challenging. A tailored supramolecular additive, N, N’-bis(2-aminoethyl) terephthalamide is developed to control the intermediate and perovskite crystallization of methyl ammonium lead iodide (MAPbI3) and enhance the thermal and moisture stability in the final film. Reversible coordinative interactions of the carbonyl groups with Pb2+ ions via Lewis acid-base adduct and subsequent ion–ion interactions of the peripheral ammonium groups with the perovskite grain boundaries are combined which is stabilized by a strong hydrogen bonding pattern formed between the amide moieties of the additive molecules. Adding low amounts of this additive to the precursor solution significantly decelerates the structure formation and systematically reduces the crystallite size. Slower growth of the intermediate phases and the incorporation of the additive to the grain boundary is observed with multiple time-resolved techniques. Evidence for the formation of single-molecule interlayers between the MAPbI3 crystals and the presence of directed supramolecular interaction between additive molecules is shown. Transferability of this approach to other perovskites is anticipated, paving the way to improved processing control and stability.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Abstract Perovskite films feature unique optoelectronic properties, rendering them promising for electronic devices. The properties depend on the morphology on a broad range of length scales from nanometers to millimeters, influenced by a variety of factors. However, controlling the morphology is challenging. A tailored supramolecular additive, N, N’-bis(2-aminoethyl) terephthalamide is developed to control the intermediate and perovskite crystallization of methyl ammonium lead iodide (MAPbI3) and enhance the thermal and moisture stability in the final film. Reversible coordinative interactions of the carbonyl groups with Pb2+ ions via Lewis acid-base adduct and subsequent ion–ion interactions of the peripheral ammonium groups with the perovskite grain boundaries are combined which is stabilized by a strong hydrogen bonding pattern formed between the amide moieties of the additive molecules. Adding low amounts of this additive to the precursor solution significantly decelerates the structure formation and systematically reduces the crystallite size. Slower growth of the intermediate phases and the incorporation of the additive to the grain boundary is observed with multiple time-resolved techniques. Evidence for the formation of single-molecule interlayers between the MAPbI3 crystals and the presence of directed supramolecular interaction between additive molecules is shown. Transferability of this approach to other perovskites is anticipated, paving the way to improved processing control and stability. |
| 2. | Greve, Christopher; Ramming, Philipp; Griesbach, Markus; Leupold, Nico; Moos, Ralf; Köhler, Anna; Herzig, Eva M; Panzer, Fabian; Grüninger, Helen: To Stop or to Shuttle Halides? The Role of an Ionic Liquid in Thermal Halide Mixing of Hybrid Perovskites. In: ACS Energy Letters, 2023. (Type: Journal Article | Links | BibTeX) @article{Greve2023b, title = {To Stop or to Shuttle Halides? The Role of an Ionic Liquid in Thermal Halide Mixing of Hybrid Perovskites}, author = {Christopher Greve and Philipp Ramming and Markus Griesbach and Nico Leupold and Ralf Moos and Anna Köhler and Eva M Herzig and Fabian Panzer and Helen Grüninger}, doi = {10.1021/acsenergylett.3c01878}, year = {2023}, date = {2023-11-07}, journal = {ACS Energy Letters}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
References (last update: Sept. 23, 2024):
2025 |
Kuhn, Meike; Wenzel, Felix A; Greve, Christopher; Kreger, Klaus; Schwartzkopf, Matthias; Schmidt, Hans-Werner; Grüninger, Helen; Herzig, Eva M Tailored Supramolecular Additives to Control the Crystallization Process and Morphology of MAPbI3 Journal Article Small, 21 (9), pp. 2410230, 2025, ISSN: 1613-6810. Abstract | Links | BibTeX | Tags: additive engineering, crystal morphology, crystallization control, GIWAXS, perovskites, solid-state NMR spectroscopy, supramolecular additive @article{Kuhn2025, title = {Tailored Supramolecular Additives to Control the Crystallization Process and Morphology of MAPbI3}, author = {Meike Kuhn and Felix A Wenzel and Christopher Greve and Klaus Kreger and Matthias Schwartzkopf and Hans-Werner Schmidt and Helen Grüninger and Eva M Herzig}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/smll.202410230}, doi = {https://doi.org/10.1002/smll.202410230}, issn = {1613-6810}, year = {2025}, date = {2025-02-05}, journal = {Small}, volume = {21}, number = {9}, pages = {2410230}, abstract = {Abstract Perovskite films feature unique optoelectronic properties, rendering them promising for electronic devices. The properties depend on the morphology on a broad range of length scales from nanometers to millimeters, influenced by a variety of factors. However, controlling the morphology is challenging. A tailored supramolecular additive, N, N’-bis(2-aminoethyl) terephthalamide is developed to control the intermediate and perovskite crystallization of methyl ammonium lead iodide (MAPbI3) and enhance the thermal and moisture stability in the final film. Reversible coordinative interactions of the carbonyl groups with Pb2+ ions via Lewis acid-base adduct and subsequent ion–ion interactions of the peripheral ammonium groups with the perovskite grain boundaries are combined which is stabilized by a strong hydrogen bonding pattern formed between the amide moieties of the additive molecules. Adding low amounts of this additive to the precursor solution significantly decelerates the structure formation and systematically reduces the crystallite size. Slower growth of the intermediate phases and the incorporation of the additive to the grain boundary is observed with multiple time-resolved techniques. Evidence for the formation of single-molecule interlayers between the MAPbI3 crystals and the presence of directed supramolecular interaction between additive molecules is shown. Transferability of this approach to other perovskites is anticipated, paving the way to improved processing control and stability.}, keywords = {additive engineering, crystal morphology, crystallization control, GIWAXS, perovskites, solid-state NMR spectroscopy, supramolecular additive}, pubstate = {published}, tppubtype = {article} } Abstract Perovskite films feature unique optoelectronic properties, rendering them promising for electronic devices. The properties depend on the morphology on a broad range of length scales from nanometers to millimeters, influenced by a variety of factors. However, controlling the morphology is challenging. A tailored supramolecular additive, N, N’-bis(2-aminoethyl) terephthalamide is developed to control the intermediate and perovskite crystallization of methyl ammonium lead iodide (MAPbI3) and enhance the thermal and moisture stability in the final film. Reversible coordinative interactions of the carbonyl groups with Pb2+ ions via Lewis acid-base adduct and subsequent ion–ion interactions of the peripheral ammonium groups with the perovskite grain boundaries are combined which is stabilized by a strong hydrogen bonding pattern formed between the amide moieties of the additive molecules. Adding low amounts of this additive to the precursor solution significantly decelerates the structure formation and systematically reduces the crystallite size. Slower growth of the intermediate phases and the incorporation of the additive to the grain boundary is observed with multiple time-resolved techniques. Evidence for the formation of single-molecule interlayers between the MAPbI3 crystals and the presence of directed supramolecular interaction between additive molecules is shown. Transferability of this approach to other perovskites is anticipated, paving the way to improved processing control and stability. |
2023 |
Greve, Christopher; Ramming, Philipp; Griesbach, Markus; Leupold, Nico; Moos, Ralf; Köhler, Anna; Herzig, Eva M; Panzer, Fabian; Grüninger, Helen To Stop or to Shuttle Halides? The Role of an Ionic Liquid in Thermal Halide Mixing of Hybrid Perovskites Journal Article ACS Energy Letters, 2023. Links | BibTeX | Tags: hybrid, ionic liquid, perovskites @article{Greve2023b, title = {To Stop or to Shuttle Halides? The Role of an Ionic Liquid in Thermal Halide Mixing of Hybrid Perovskites}, author = {Christopher Greve and Philipp Ramming and Markus Griesbach and Nico Leupold and Ralf Moos and Anna Köhler and Eva M Herzig and Fabian Panzer and Helen Grüninger}, doi = {10.1021/acsenergylett.3c01878}, year = {2023}, date = {2023-11-07}, journal = {ACS Energy Letters}, keywords = {hybrid, ionic liquid, perovskites}, pubstate = {published}, tppubtype = {article} } |