首页|Selection of Functional Spacer Cations for Efficient 2D/3D Perovskite Solar Cells
Selection of Functional Spacer Cations for Efficient 2D/3D Perovskite Solar Cells
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In recent years,perovskite solar cells(PSCs)have gone through unparalleled rapid expansion and be-come 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 con-strains their commercializability.In comparison,two-dimensional(2D)PSCs have aroused wide-spread concern due to their superior stability.After that,2D/3D perovskite materials combining high ef-ficiency 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 appro-priate spacer cations in 2D perovskites is summa-rized and proposed.Then,by selecting appropriate cations,the role of 2D perovskites is elaborated,including energy level regulation,ion migration sup-pression,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 pros-pected.
College of Chemistry and Chemical Engineering,Institute of Polymers and Energy Chemistry(IPEC),Nanchang University,Nanchang 330031
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
Peking University Yangtze Delta Institute of Optoelectronics,Nantong 226010
Department of Polymer Materials and Engineering,School of Physics and Materials Science,Nanchang University,Nanchang 330031
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