Publications

@article{Guo2024b,
title = {Stabilizing efficient wide-bandgap perovskite in perovskite-organic tandem solar cells},
author = {Xiao Guo and Zhenrong Jia and Shunchang Liu and Renjun Guo and Fangyuan Jiang and Yangwei Shi and Zijing Dong and Ran Luo and Yu-Duan Wang and Zhuojie Shi and Jia Li and Jinxi Chen and Ling Kai Lee and Peter Müller-Buschbaum and David S Ginger and David J Paterson and Yi Hou},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85198585351&doi=10.1016%2fj.joule.2024.06.009&partnerID=40&md5=8f76312a131a5996d18067ca5866992a},
doi = {10.1016/j.joule.2024.06.009},
issn = {25424351},
year = {2024},
date = {2024-01-01},
journal = {Joule},
publisher = {Cell Press},
abstract = {Iodide and bromide integration facilitate bandgap tunability in wide-bandgap perovskites, yet high concentrations of bromide lead to halide phase segregation, adversely affecting the efficiency and stability of solar cell devices. In this work, 2-amino-4,5-imidazoledicarbonitrile (AIDCN), with highly polarized charge distribution and compact molecular configuration, is incorporated into a 1.86 eV wide-bandgap perovskite to effectively suppress photoinduced iodine escape and phase segregation. Hyperspectral photoluminescence microscopy reveals that AIDCN mitigates phase segregation under continuous laser exposure. Concurrent in situ grazing-incidence wide-angle X-ray scattering and X-ray fluorescence measurements further validate suppressed iodine escape, evidenced by a notable slowing down of lattice shrinkage and a well-maintained overall chemical composition of the perovskite under continuous illumination. Applying this approach, we achieve a power conversion efficiency (PCE) of 18.52% in 1.86 eV wide-bandgap perovskite solar cells. By integrating this perovskite subcell with the PM6:BTP-eC9 organic subcell, the tandem attains a maximum PCE of 25.13%, with a certified stabilized PCE of 23.40%. © 2024 Elsevier Inc.},
note = {Cited by: 1},
keywords = {5-imidazoledicarbonitrile; Halide phase segregation; Iodine escape; Organics; Perovskite-organic tandem; Phase segregations; Power conversion efficiencies; Sub-cells; Tandem solar cells; Wide-band-gap; Perovskite, Conversion efficiency; Energy gap; Iodine; Lead compounds; Organic solar cells; Perovskite solar cells; Phase separation; X ray scattering; 2-amino-4},
pubstate = {published},
tppubtype = {article}
}