材料科学
钙钛矿(结构)
卤化物
碘化物
富勒烯
环氧乙烷
纳米技术
手套箱
化学工程
高分子化学
无机化学
有机化学
工程类
化学
作者
Meng Li,Yingguo Yang,Zhao‐Kui Wang,Tin Kang,Qiong Wang,Silver‐Hamill Turren‐Cruz,Xingyu Gao,Chain‐Shu Hsu,Liang‐Sheng Liao,Antonio Abate
标识
DOI:10.1002/adma.201901519
摘要
Halide perovskite films processed from solution at low-temperature offer promising opportunities to make flexible solar cells. However, the brittleness of perovskite films is an issue for mechanical stability in flexible devices. Herein, photo-crosslinked [6,6]-phenylC61 -butyric oxetane dendron ester (C-PCBOD) is used to improve the mechanical stability of methylammonium lead iodide (MAPbI3 ) perovskite films. Also, it is demonstrated that C-PCBOD passivates the grain boundaries, which reduces the formation of trap states and enhances the environmental stability of MAPbI3 . Thus, MAPbI3 perovskite solar cells are prepared on solid and flexible substrates with record efficiencies of 20.4% and 18.1%, respectively, which are among the highest ever reported for MAPbI3 on both flexible and solid substrates. The result of this work provides a step improvement toward stable and efficient flexible perovskite solar cells.
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