The donor-dependent methoxy effects on the performance of hole-transporting materials for perovskite solar cells  

作　　者：Mengyuan Li Jinhua Wua Guoguo Wang Bingxue Wu Zhe Sun Song Xue Qiquan Qiao Mao Liang 

机构地区：[1]Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion,Department of Applied Chemistry,Tianjin University of Technology,Tianjin 300384.China [2]Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education),Collaborative Innovation Center of Chemical Science and Engineering,College of Chemistry,Nankai University,Tianjin 300071,China [3]Center for Advanced Photovoltaics,Department of Electrical Engineering,South Dakota State University,Brookings,SD 57007 United States

出　　处：《Journal of Energy Chemistry》2020年第8期10-17,I0001,共9页能源化学（英文版）

基　　金：the financial support from the National Science Foundation of China (No.21373007, 21671148);the Tianjin Natural Science Foundation (18JCYBJC21600, 18JCZDJC97000);111 project (B12015);Training Project of Innovation Team of Colleges and Universities in Tianjin (TD13-5020)。

摘　　要：In this work, a comprehensive study on the deliberate molecular design and modifications of electron donors is carried out to elucidate correlations between the methoxy effects and donor configuration of hole-transporting materials(HTMs). Our initial findings demonstrate the donor-dependent methoxy effects. Photovoltaic performance of the HTM with twisted donor highly depends on the methoxy substituent. In contrast, efficiency’s reliance on methoxy is insignificant for the HTM with planar donor. The HTM(M123) featuring the methoxy–substituted carbazole shows a decent power conversion efficiency of 19.33% due to synergistic effects from both planar structure and methoxy. This work gives a guideline to access HTMs reaching both high-performance and good stability.

关 键 词：Hole-transporting materials Donor configuration Methoxy effect Perovskite solar cells 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TB302[一般工业技术—材料科学与工程]