An In-Situ Formed Tunneling Layer Enriches the Options of Anode for Efficient and Stable Regular Perovskite Solar Cells

作     者：Xuesong Lin Yanbo Wang Hongzhen Su Zhenzhen Qin Ziyang Zhang Mengjiong Chen Min Yang Yan Zhao Xiao Liu Xiangqian Shen Liyuan Han 

作者机构：State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China Special Division of Environmental and Energy ScienceKomaba Organization for Educational ExcellenceCollege of Arts and SciencesUniversity of TokyoTokyo 153-8902Japan 

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

年 卷 期：2023年第15卷第1期

页      面：197-208页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 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] 

基　　金：The authors acknowledge financial support from the National Key R&D Program of China(Nos.2020YFB1506400 and 2021YFB3800068) the National Natural Science Foundation of China(Nos.11834011,12074245,U21A20171 and 52102281) Shanghai Sailing Program(No.21YF1421600) Young Elite Scientists Sponsorship Program by China Association for Science and Technology(No.2021QNRC001). 

主　　题：Perovskite solar cell Anode Halogen migration In situ tunneling layer 

摘      要：Perovskite solar cells(PSCs)are taking steps to commercialization.However,the halogen-reactive anode with high cost becomes a stumbling block.Here,the halogen migration in PSCs is utilized to in situ generate a uniform tunneling layer between the hole transport materials and anodes,which enriches the options of anodes by breaking the Schottky barrier,enabling the regular PSCs with both high efficiency and stability.Specifically,the regular PSC that uses silver iodide as the tunneling layer and copper as the anode obtains a champion power conversion efficiency of 23.24%(certified 22.74%)with an aperture area of 1.04 cm^(2).The devices are stable,maintaining 98.6%of the initial effi-ciency after 500 h of operation at the maximum power point with continuous 1 sun illumination.PSCs with different tunneling layers and anodes are fabricated,which confirm the generality of the strategy.