材料科学
钙钛矿(结构)
卤化物
能量转换效率
甲胺
格式化
八面体
非阻塞I/O
离子液体
带隙
离子键合
化学工程
化学物理
光电子学
纳米技术
结晶学
无机化学
离子
催化作用
晶体结构
化学
有机化学
工程类
作者
Xiaofen Jiang,Xue Wang,Xin Wu,Shoufeng Zhang,Baoze Liu,Dong Zhang,Bo Li,Peng Xiao,Fang Xu,Haipeng Lu,Tao Chen,Alex K.‐Y. Jen,Shangfeng Yang,Zonglong Zhu
标识
DOI:10.1002/aenm.202300700
摘要
Abstract Inverted (p‐i‐n) perovskite solar cells have drawn great attention due to their outstanding stability and low‐temperature processibility. However, their power conversion efficiency (PCE) still lags behind conventional (n‐i‐p) devices mainly due to the lack of strategies to stabilize α ‐FAPbI 3 without changing the bandgap. In this work, a facile and effective strategy is reported to regulate the residual strain via pseudo halide‐based ionic liquids incorporation to stabilize α ‐FAPbI 3 perovskite in inverted perovskite solar cells (PVSCs). The employment of methylamine formate (MAFa) ionic liquid enables a homogenously stronger compressive strain to restrain the transition of shared‐corner PbI 6 octahedron into shared‐face δ ‐FAPbI 3 , as well as affecting the dynamic behavior of carriers and defects to achieve a record PCE (24.08%) among the reported inverted FAPbI 3 perovskite solar cells up to now. In addition, the MAFa incorporation results in enhanced device stability, unencapsulated PVSC retains over 90% of its initial efficiency after stored in ambient environment (RH:30 ± 5%) for 1000 h. This work provides an efficient strategy to realize efficient and stable α ‐FAPbI 3 based inverted PVSCs to further catch up with the conventional ones.
科研通智能强力驱动
Strongly Powered by AbleSci AI