Статья

A crystal capping layer for formation of black-phase FAPbI <sub>3</sub> perovskite in humid air

Yu ZouState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, P. R. ChinaWenjin YuState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, P. R. ChinaHaoqing GuoState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, P. R. ChinaQizhi LiInternational Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, P. R. ChinaXiangdong LiState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, P. R. ChinaLiang LiSchool of Materials Science and Engineering, Peking University, Beijing 100871, P. R. ChinaYueli LiuState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, P. R. ChinaHantao WangState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, P. R. ChinaZhenyu TangState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, P. R. ChinaShuang YangState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, P. R. ChinaYanrun ChenExperimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. ChinaBo QuState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, P. R. ChinaYunan GaoState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, P. R. ChinaZhijian ChenState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, P. R. ChinaShufeng WangState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, P. R. ChinaDongdong ZhangKey Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. ChinaYihua ChenExperimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. ChinaQi ChenExperimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. ChinaShaik M. ZakeeruddinLaboratory of Photonics and Interfaces, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, SwitzerlandY. Y. PengInternational Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, P. R. ChinaHuanping ZhouSchool of Materials Science and Engineering, Peking University, Beijing 100871, P. R. ChinaQihuang GongState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, P. R. ChinaMingyang WeiLaboratory of Photonics and Interfaces, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, SwitzerlandMichaël GrätzelLaboratory of Photonics and Interfaces, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, SwitzerlandLixin XiaoBeijing Huairou Laboratory, Beijing 101400, P. R. China

2024en

ABI

Аннотация

Black-phase formamidinium lead iodide (α-FAPbI 3 ) perovskites are the desired phase for photovoltaic applications, but water can trigger formation of photoinactive impurity phases such as δ-FAPbI 3 . We show that the classic solvent system for perovskite fabrication exacerbates this reproducibility challenge. The conventional coordinative solvent dimethyl sulfoxide (DMSO) promoted δ-FAPbI 3 formation under high relative humidity (RH) conditions because of its hygroscopic nature. We introduced chlorine-containing organic molecules to form a capping layer that blocked moisture penetration while preserving DMSO-based complexes to regulate crystal growth. We report power conversion efficiencies of >24.5% for perovskite solar cells fabricated across an RH range of 20 to 60%, and 23.4% at 80% RH. The unencapsulated device retained 96% of its initial performance in air (with 40 to 60% RH) after 500-hour maximum power point operation.

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Идентификаторы

DOI: 10.1126/science.adn9646

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar