Efficient and stable organic solar cells enabled by a poly(carbazole phosphonic acid)hole transporter  

作　　者：Zhijun Ren Siwei Luo Xiaoyu Shi Yunjie Dou Tianxiao Liu Lingyuan Wang Kwok Kiu Tsang Feifei Wang Yu Zhao Yangyang Liu Xiaodong Hu Xiaoxiao Peng Wei Liu He Yan Shangshang 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,210023,China [2]Department of Chemistry,Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials,Energy Institute and Hong Kong Branch of Chinese National,Engineering Research Center for Tissue Restoration and Reconstruction,Hong Kong University of Science and Technology,Hong Kong,999077,China

出　　处：《Science China Chemistry》2024年第6期1941-1945,共5页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China(52372196);the Natural Science Foundation of Jiangsu Province(BK20230794);Jiangsu Association for Science and Technology(TJ-2022-056)。

摘　　要：Conventional self-assembled monolayer(SAM)hole transporters in organic solar cells(OSCs)generally suffer from poor uniformity and limited thickness tolerance,hindering their large-scale production.To overcome these limitations,we introduce a novel polymeric hole transporter synthesized by polymerizing carbazole phosphonic acid(PACz).The resultant Poly-2PACz material exhibits exceptional conductivity,high tolerance for variations in layer thickness,and improved film uniformity compared with conventional SAMs.Consequently,the OSCs utilizing Poly-2PACz achieve a remarkable power conversion efficiency of 19.1%and a high fill factor of 81.2%,surpassing the devices based on 2PACz.Moreover,Poly-2PACz-based OSCs demonstrate excellent operational stability,retaining over 80%of their initial efficiency after 1,400 h of continuous light exposure in ambient conditions.This work presents a novel strategy for designing hole transporters,paving the way for more efficient and stable OSCs.

关 键 词：organic solar cells hole transporters poly(carbazole phosphonic acid) STABILITY 

分 类 号：TM914.4[电气工程—电力电子与电力传动]