期刊
CHEMSUSCHEM
卷 12, 期 11, 页码 2385-2392出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201900106
关键词
humid conditions; MAPbI(3); organic cations; perovskite solar cells; X-ray diffraction
资金
- National Natural Science Foundation of China (NSFC) [51672202, 2187050787]
- Technological Innovation Key Project of Hubei Province [2018AAA048]
- Chutian Scholar Program of Hubei Province, China
Solution-processed organic-inorganic lead halide perovskites have shown photovoltaic performance above 23 %, attracting great attention. However, the champion devices require fabrication in a controlled inert/dry atmosphere. The development of highly efficient and stable perovskite solar cells under high-humidity atmosphere conditions for future commercialization is still challenging, especially for CH3NH3PbI3 (MAPbI(3)), which is vulnerable to moisture. In this study, a large-sized tert-butylammonium [C(CH3)(3)NH3+] organic cation was incorporated into the MAPbI(3) crystalline structure, which could form a more stable 3 D crystalline structure and alleviate the decomposition caused by the humidity. It delivered a power conversion efficiency of 19.3 % upon preparation under a humid environment condition of 50 % relative humidity as well as improved humidity and thermal stability. Our work provides a facile strategy for improving perovskite performance and stability by introducing a new chemical additive for the future application of perovskite solar cells.
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