Статья

Grain‐Boundary “Patches” by In Situ Conversion to Enhance Perovskite Solar Cells Stability

Lang LiuBeijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems School of Materials Science & Engineering Beijing Institute of Technology Beijing 100081 ChinaSheng HuangBeijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems School of Materials Science & Engineering Beijing Institute of Technology Beijing 100081 ChinaYue LuInstitute of Microstructure and Properties of Advanced Materials Beijing University of Technology Beijing 100124 ChinaPengfei LiuBeijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems School of Materials Science & Engineering Beijing Institute of Technology Beijing 100081 ChinaYizhou ZhaoBeijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems School of Materials Science & Engineering Beijing Institute of Technology Beijing 100081 ChinaCongbo ShiBeijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems School of Materials Science & Engineering Beijing Institute of Technology Beijing 100081 ChinaSiyu ZhangBeijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems School of Materials Science & Engineering Beijing Institute of Technology Beijing 100081 ChinaJiafeng WuBeijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems School of Materials Science & Engineering Beijing Institute of Technology Beijing 100081 ChinaHaizheng ZhongBeijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems School of Materials Science & Engineering Beijing Institute of Technology Beijing 100081 ChinaManling SuiInstitute of Microstructure and Properties of Advanced Materials Beijing University of Technology Beijing 100124 ChinaHuanping ZhouDepartment of Materials Science and Engineering College of Engineering Peking University Beijing 100871 ChinaHaibo JinBeijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems School of Materials Science & Engineering Beijing Institute of Technology Beijing 100081 ChinaYujing LiBeijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems School of Materials Science & Engineering Beijing Institute of Technology Beijing 100081 ChinaQi ChenAdvanced Research Institute for Multidisciplinary Science Beijing Institute of Technology Beijing 100081 China

2018en

ABI

Аннотация

Abstract The power conversion efficiency of organic–inorganic hybrid perovskite solar cells has increased rapidly, but the device stability remains a big challenge. Previous studies show the grain boundary (GB) can facilitate ion migration and initiate device degradation. Herein, methimazole (MMI) is employed for the first time to construct a surface “patch” by in situ converting residual PbI 2 at GBs. The resultant MMI–PbI 2 complex can effectively suppress ion migration and inhibit diffusion of the metal electrodes. The origin of the surface “patch” effect and their working mechanisms are investigated experimentally and theoretically at the microscopic level. It hence demonstrates a simple and effective method to prolong the device stability in the context of GB engineering, which could be extensively applied to perovskite‐based optoelectronics.

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Идентификаторы

DOI: 10.1002/adma.201800544

Цитирования и источники

Цитирований: 2Использованных источников: 0

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