Interfacial Embedding of Laser‐Manufactured Fluorinated Gold Clusters Enabling Stable Perovskite Solar Cells with Efficiency Over 24%

• DOI: 10.1002/adma.202101590
• Publication Date: 2021-07-24T11:02:05Z
• Authors: Pengfei Guo; Hongfu Zhu; Wenhao Zhao; Chen Liu; Liguo Zhu; Qian Ye; Ning Jia; Hongyue Wang; Xiuhai Zhang; Wanxia Huang; Vladimir A. Vinok...; Evgenii Ivanov; Dmitry Shchukin; Daniel Harvey; Jose María Ulloa; Adrian Hierro; Hongqiang Wang
• Keywords: Materiales; Física; Electrónica; 01 natural sciences; 7. Clean energy; 0104 chemical sciences

Abstract Tackling the interfacial loss in emerged perovskite‐based solar cells (PSCs) to address synchronously carrier dynamics and environmental stability, has been of fundamental viable importance, while technological hurdles remain not only creating such mediator, but subsequent embedding active layer. This article reports a strategy hydrophobic fluorinated‐gold‐clusters (FGCs) for highly efficient stable PSCs. The p‐type semiconducting feature enables FGC mediator improve by reducing transfer barrier boosting charge extraction at grain boundaries. tails gold clusters hydrogen bonding between fluorine groups perovskite favor enhancement stability. Benefiting from these merits, formamidinium lead iodide PSCs (champion efficiency up 24.02%) with enhanced phase stability under varied relative humidity (RH) 40% 95%, as well mixed‐cation moisture (RH 75%) over 10 000 h are achieved. It is thus inspiring advance development via laser‐generated additives improved transfer/extraction