钙钛矿(结构)
材料科学
图层(电子)
卤化物
聚合物
光伏系统
光电子学
钙钛矿太阳能电池
能量转换效率
光活性层
化学工程
聚合物太阳能电池
纳米技术
复合材料
无机化学
化学
电气工程
工程类
作者
Feijiu Wang,Ai Shimazaki,Fengjiu Yang,Kaito Kanahashi,Keiichiro Matsuki,Yuhei Miyauchi,Taishi Takenobu,Atsushi Wakamiya,Yasujiro Murata,Kazunari Matsuda
标识
DOI:10.1021/acs.jpcc.6b12137
摘要
Solution-processed organo-lead halide perovskite solar cells with deep pinholes in the perovskite layer lead to shunt-current leakage in devices. Herein, we report a facile method for improving the performance of perovskite solar cells by inserting a solution-processed polymer layer between the perovskite layer and the hole-transporting layer. The photovoltaic conversion efficiency of the perovskite solar cell increased to 18.1% and the stability decreased by only about 5% during 20 days of exposure in moisture ambient conditions through the incorporation of a poly(methyl methacrylate) (PMMA) polymer layer. The improved photovoltaic performance of devices with a PMMA layer is attributed to the reduction of carrier recombination loss from pinholes, boundaries, and surface states of perovskite layer. The significant gain generated by this simple procedure supports the use of this strategy in further applications of thin-film optoelectronic devices.
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