Selection of Functional Spacer Cations for Efficient 2D/3D Perovskite Solar Cells  

作　　者：Dengxue Li Zhi Xing Xiangchuan Meng Xiaotian Hu Ting Hu Yiwang Chen 

机构地区：[1]College of Chemistry and Chemical Engineering,Institute of Polymers and Energy Chemistry(IPEC),Nanchang University,Nanchang 330031 [2]National Engineering Research Center for Carbohydrate Synthesis,Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education,Jiangxi Normal University,Nanchang 330022 [3]Peking University Yangtze Delta Institute of Optoelectronics,Nantong 226010 [4]Department of Polymer Materials and Engineering,School of Physics and Materials Science,Nanchang University,Nanchang 330031

出　　处：《CCS Chemistry》2023年第4期781-801,共21页中国化学会会刊（英文）

基　　金：support from the National Natural Science Foundation of China(NSFC)(grant nos.52163019,22005131,52173169,and U20A20128);support from the China Postdoctoral Science Foundation(grant no.2021M700060);the Postdoctoral Innovative Talents Support Program(grant no.BX2021117).

摘　　要：In recent years,perovskite solar cells(PSCs)have gone through unparalleled rapid expansion and become a candidate for solar cells.Among various PSCs,though typical three-dimensional(3D)halide perovskite-based PSCs deliver the highest efficiency,they are subjected to severe instability,which constrains their commercializability.In comparison,two-dimensional(2D)PSCs have aroused widespread concern due to their superior stability.After that,2D/3D perovskite materials combining high efficiency and good stability have emerged as the times require,which are expected to bring about stable and efficient PSCs.Here,this review focuses on selection of functional spacer cations for efficient and stable 2D/3D PSCs.First,the unique function of different spacer groups and the selection of appropriate spacer cations in 2D perovskites is summarized and proposed.Then,by selecting appropriate cations,the role of 2D perovskites is elaborated,including energy level regulation,ion migration suppression,defect passivation,residual stress release and improved stability.In addition,the preparation methods of 2D/3D perovskites are comprehensively summarized.Finally,current challenges and future opportunities for the further development of 2D/3D perovskites for solar cells are discussed and prospected.

关 键 词：2D/3D perovskites spacer cations high efficiency stability defect passivation 

分 类 号：O61[理学—无机化学]