Zwitterion Coordination Induced Highly Orientational Order of CH3NH3PbI3 Perovskite Film Delivers a High Open Circuit Voltage Exceeding 1.2 V

• Published in: Advanced functional materials Vol. 29; no. 23
• Main Authors: Zhou, Weiran, Li, Dan, Xiao, Zhengguo, Wen, Zhilin, Zhang, Mengmeng, Hu, Wanpei, Wu, Xiaojun, Wang, Mingtai, Zhang, Wen‐Hua, Lu, Yalin, Yang, Shihe, Yang, Shangfeng
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc 06.06.2019
• Subjects: additive engineering; Coordination; Crystal structure; crystalline grain orientation; Doping; Electron transport; Energy conversion efficiency; Heterojunctions; Imidazole; Materials science; Open circuit voltage; perovskite solar cells; Perovskites; Photovoltaic cells; Solar cells; Titanium dioxide; trap passivation; zwitterion; Zwitterions

The organic–inorganic halide CH3NH3PbI3 (MAPbI3) has been the most commonly used light absorber layer of perovskite solar cells (PSCs); however, solution‐processed MAPbI3 films usually suffer from random crystal orientation and high trap density, resulting in inferior power conversion efficiency (PC...