Mixed Cations Enabled Combined Bulk and Interfacial Passivation for Efficient and Stable Perovskite Solar Cells

作     者：Pengfei Wu Shirong Wang Jin Hyuck Heo Hongli Liu Xihan Chen Xianggao Li Fei Zhang Pengfei Wu;Shirong Wang;Jin Hyuck Heo;Hongli Liu;Xihan Chen;Xianggao Li;Fei Zhang

作者机构：School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072People’s Republic of China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)Tianjin 300072People’s Republic of China Department of Chemical and Biological EngineeringKorea University145 Anam‑RoSeongbuk‑GuSeoul 17104Republic of Korea SUSTech Energy Institute for Carbon NeutralityDepartment of Mechanical and Energy EngineeringSouthern University of Science and TechnologyShenzhenGuangdong 518055People’s Republic of China 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2023年第15卷第8期

页      面：116-127页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Key Research and Development Program of China(2021YFB3800103) the Fundamental Research Funds for the Central Universities(000-0903069032) the National Natural Science Foundation of China(52203237) 

主　　题：Alternating-cation-interlayer Bulk defects Interfacial passivation Perovskite solar cells 

摘      要：Here,we report a mixed GAI and MAI(MGM)treatment method by forming a 2D alternating-cation-interlayer(ACI)phase(n=2)perovskite layer on the 3D perovskite,modulating the bulk and interfacial defects in the perovskite films simultaneously,leading to the suppressed nonradiative recombination,longer lifetime,higher mobility,and reduced trap ***,the devices’performance is enhanced to 24.5%and 18.7%for 0.12 and 64 cm^(2),*** addition,the MGM treatment can be applied to a wide range of perovskite compositions,including MA-,FA-,MAFA-,and CsFAMA-based lead halide perovskites,making it a general method for preparing efficient perovskite solar *** encapsulation,the treated devices show improved stabilities.