Incorporation ofγ-aminobutyric acid and cesium cations to formamidinium lead halide perovskites for highly efficient solar cells

作     者：Yanqiang Hu Yansu Shan Zhaolei Yu Haojie Sui Ting Qiu Shufang Zhang Wei Ruan Qinfeng Xu Mengmeng Jiao Dehua Wang Yunyi Wu Chuanlu Yang Feng Xu Yanqiang Hu;Yansu Shan;Zhaolei Yu;Haojie Sui;Ting Qiu;Shufang Zhang;Wei Ruan;Qinfeng Xu;Mengmeng Jiao;Dehua Wang;Yunyi Wu;Chuanlu Yang;Feng Xu

作者机构：School of Physics and Photoelectronic EngineeringLudong UniversityYantai 264025ShandongChina College of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094JiangsuChina Yan tai En Bang Electronic Technology Co.Ltd.Yantai 264006ShandongChina Research Center for Comprehensive Energy TechnologyCTG Science and Technology Research InstituteBeijing 100038China 

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

年 卷 期：2022年第31卷第1期

页      面：561-567,I0015页

核心收录：

学科分类：0820[工学-石油与天然气工程] 0808[工学-电气工程] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：financial support from the Taishan Scholar Project of Shandong Province under Grant No. tsqn201812098 the Shandong Provincial Natural Science Foundation (ZR2020MF103, ZR2019MF057, and ZR2019MA066) National Natural Science Foundation of China (21701080) Postgraduate Research & Practice Innovation Program of Jiangsu Province 

主　　题：Perovskite solar cells γ-aminobutyric acid Methylammonium-free Stability 

摘      要：The stability issue has become one of the main challenges for the commercialization of perovskite solar cells(PSCs).Formamidinium(FA)-based perovskites have shown great promise owing to their improved thermal and moisture ***,these perovskites are suffering from phase transition and ***,a method of incorporating of γ-aminobutyric acid(GABA) and cesium cations into FAPbl_(3) is developed to improve the phase *** is demonstrated that the crystallinity of α-FAPbl_(3) phase is greatly improved and the phase transition temperature is significantly *** resultant solar cell therefore obtains a champion power conversion efficiency(PCE) of 23.71%,which is one of the highest efficiencies for methylammonium-free ***,it shows an impressively enhanced stability under illumination,exhibiting the great potential of FA-based perovskites for efficient and stable solar cells.