Organic ammonium halides enhance the performance of Pb-Sn perovskite solar cells

作     者：Zhimin Fang Lixiu Zhang Shengzhong(Frank)Liu Liming Ding Zhimin Fang;Lixiu Zhang;Shengzhong(Frank)Liu;Liming Ding

作者机构：Key Laboratory of Applied Surface and Colloid Chemistry(MoE)School of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119China Center for Excellence in Nanoscience(CAS)Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190China 

出 版 物：《Journal of Semiconductors》 (半导体学报（英文版）)

年 卷 期：2022年第43卷第12期

页      面：5-8页

核心收录：

学科分类：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] 0702[理学-物理学] 

基　　金：the 111 Project(B21005) the National Natural Science Foundation of China(62174103) the Fundamental Research Funds for the Central Universities(GK202103108) fund of Songshan Lake Materials Laboratory(2021SLABFK02) the National Natural Science Foundation of China(21961160720). 

主　　题：perovskite ammonium narrow 

摘      要：With the efforts of scientists around the world,the power conversion efficiency(PCE)of perovskite solar cells(PSCs)has reached 25.7%.To further improve the efficiency and break through the Shockley-Queisser(S-Q)limit,it is promising to construct all-perovskite tandem solar cells via combining wide-bandgap and narrow-bandgap perovskites[1−5].As the key light-harvesting material for the bottom cell in all-per-ovskite tandem devices,the narrow-bandgap Pb-Sn mixed per-ovskites have attracted increasing interest in recent years[6−8].However,the Pb-Sn mixed perovskites suffer from uncontrol-lable crystallization,easy oxidation of Sn2+and high defect density,which significantly limit PCE improvement[9,10].Organ-ic ammonium halides can improve the efficiency and stabil-ity of Pb-Sn mixed PSCs.