Enhanced Interlayer Interactions in Tin Halide Perovskite Solar Cells with a Fluorinated Fullerene Derivative

作     者：Wu, Cheng Zhang, Miao Yin, Mingyu Luo, Jie Ding, Liming Hao, Feng 

作者机构：Univ Elect Sci & Technol China Sch Mat & Energy Chengdu 611731 Peoples R China Natl Ctr Nanosci & Technol Ctr Excellence Nanosci Key Lab Nanosyst & Hierarch Fabricat CAS Beijing 100190 Peoples R China 

出 版 物：《JOURNAL OF PHYSICAL CHEMISTRY LETTERS》 (J. Phys. Chem. Lett.)

年 卷 期：2025年第16卷第5期

页      面：1261-1266页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：National Key Research and Development Program of China [2022YFE0118400] National Key Research and Development Program of China Recruitment Program for Young Professionals 

主　　题：Perovskite solar cells 

摘      要：Lead-free tin halide perovskite solar cells (TPSCs) have recently made significant progress in power conversion efficiency (PCE). However, the presence of mismatched energy levels and weak interlayer interactions between the electron transport materials (ETMs) and tin perovskites has limited the achievable PCE. Here, a new fluorinated fullerene derivative, C60-FTPA (F12), was designed and synthesized to construct a binary ETM with C60-ETPA (F6) reported in our group, resulting in a reduction in defects and improved molecular structure ordering. Furthermore, the binary ETM exhibited a stronger interaction with the tin perovskite and delivered a PCE up to 11.93%.