Simplified p-i-n Perovskite Solar Cells with a Multifunctional Polyfullerene Electron Transporter  

作　　者：Fei-Fei Wang Tian-Xiao Liu Ze-Wei Cui Ling-Yuan Wang Yun-Jie Dou Xiao-Yu Shi Si-Wei Luo Xiao-Dong Hu Zhi-Jun Ren Yang-Yang Liu Yu Zhao Shang-Shang Chen 

机构地区：[1]State Key Laboratory of Coordination Chemistry,MOE Key Laboratory of High Performance Polymer Materials&Technology,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 21003,China

出　　处：《Chinese Journal of Polymer Science》2024年第8期1060-1066,共7页高分子科学（英文版）

基　　金：financially supported by the National Key Research and Development Program of China(No.2023YFB3809700);the National Natural Science Foundation of China(No.52372196)。

摘　　要：In prevailing p-i-n perovskite solar cells(PSCs),solution-processible fullerene molecules are widely used as electron-transporting layers(ETLs)but they typically suffer from poor uniformity and undesirable stability issues.Additionally,a separate bathocuproine(BCP)layer is needed to block hole tran sfer,increasing fabrication complexity and cost.Here,we address these limitations by develo ping a novel polymeric ETL(named PF BCP)synthesized by polymerizing C_(60)with BCP.This innovative material achieves both efficient electron transport and hole blocking,while its excellent uniformity minimizes interface recombination and enhances stability.Consequently,our blade-coated PSCs utilizing PFBCP achieve a high power conversion efficiency exceeding 22%and retain 91%of initial efficiency after 1200 h of light exposure.This development not only paves the way for commercially viable PSCs but also opens avenues for future ETL design to realize even more efficient and stable PSCs.

关 键 词：Polyfullerene Perovskite solar cells Electron transporter STABILITY 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TQ317[化学工程—高聚物工业]