Alcohol-dispersed polymer complex as an effective and durable interface modifier for n-i-p perovskite solar cells

作     者：Chang Shi Jiangling Li Shuping Xiao Ziyi Wang Wuchen Xiang Rui Wu Yang Liu Yinhua Zhou Weijun Ke Guojia Fang Pingli Qin 

作者机构：Hubei Key Laboratory of Optical Information and Pattern RecognitionWuhan Institute of TechnologyWuhan 430205HubeiChina Wuhan National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWuhan 430074HubeiChina School of Physics and TechnologyKey Laboratory of Artificial Micro-and Nano-structures of the Ministry of Education and School of Physics and TechnologyWuhan UniversityWuhan 430072HubeiChina 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2024年第93卷第6期

页      面：243-252,I0007页

核心收录：

学科分类：0820[工学-石油与天然气工程] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：supported by the Science Foundation(K201827) the Open Foundation of Hubei Key Laboratory of Optical Information and Pattern Recognition(202103,202206) the Graduate Education Innovation Fund of Wuhan Institute of Technology(CX2023279,CX2023277,CX2023272) 

主　　题：Alcohol-dispersed conducting polymer complex Interface passivation Grain boundaries Device stability Perovskite solar cells 

摘      要：Abundant interfacial defects remain a significant challenge that hampers both the efficiency and stability of perovskite solar cells(PSCs).Herein,an alcohol-dispersed conducting polymer complex,denoted as PEDOT:F(Poly(3,4-ethylene dioxythiophene):Perfluorinated sulfonic acid ionomers),is introduced into the interface between perovskite and hole transporting layer in regular-structured ***:F serves as a multi-functional interface layer(filling grain boundaries and covering perovskite s grain-surface)to achieve a robust interaction with organic groups within perovskites,which could induce a structural transformation of PEDOT to increase its conductivity for the efficient ***,the strong interaction between PEDOT and perovskites could promote an effective coupling of undercoordinated Pb~(2+)ions with the lone electron pairs near O&S atoms in PEDOT molecules,thereby enhancing defect ***,PEDOT:F with inherent hydrophobic properties prevents effectively moisture invasion into perovskites for the improved long-term stability of the ***,the PEDOT:F-based PSCs achieved a champion efficiency of 24.81%,and maintained ca.92%of their initial efficiency after 7680 h of storage in a dry air environment,accompanied by the enhanced photothermal stability.