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

查看全文 作　　者：Xuesong [1]Lin;Yanbo [1]Wang;Hongzhen [1]Su;Zhenzhen [1]Qin;Ziyang [1]Zhang;Mengjiong [1]Chen;Min [1]Yang;Yan [1]Zhao;Xiao [2]Liu;Xiangqian [1]Shen;Liyuan [1,2]Han 机构地区：[1]State Key Laboratory of Metal Matrix Composites,Shanghai Jiao Tong University,Shanghai 200240,People’s Republic of China;[2]Special Division of Environmental and Energy Science,Komaba Organization for Educational Excellence,College of Arts and Sciences,University of Tokyo,Tokyo 153-8902,Japan 出　　处：《Nano-Micro Letters》索引2023年第15卷第1期,共12页 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). 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. 关 键 词：Perovskite solar cell ANODE Halogen migration In situ tunneling layer