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

Open AccessCCS ChemistryMINI REVIEWS18 Jan 2023Selection of Functional Spacer Cations for Efficient 2D/3D Perovskite Solar Cells Dengxue Li, Zhi Xing, Xiangchuan Meng, Xiaotian Hu, Ting Hu and Yiwang Chen Dengxue Li Google Scholar More articles by this author , Zhi Xing Google Scholar More articles by this author , Xiangchuan Meng Google Scholar More articles by this author , Xiaotian Hu Google Scholar More articles by this author , Ting Hu Google Scholar More articles by this author and Yiwang Chen Google Scholar More articles by this author https://doi.org/10.31635/ccschem.023.202202409 SectionsSupplemental MaterialAboutPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InEmail In recent years, perovskite solar cells (PSCs) have gone through unparalleled rapid expansion and become a candidate for solar cell. 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 commercialization applications. By comparison, the 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 emerge 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 group and the selection of appropriate spacer cations in 2D perovskites was summarized and proposed. Then, by selecting appropriate cations, the role of 2D perovskite was elaborated, including energy level regulation, suppressing ion migration, defect passivation, releasing residual stress and improving stability. Besides, the preparation methods of 2D/3D perovskite were comprehensively summarized. Finally, current challenges and future opportunities for further development of 2D/3D perovskites for solar cells were discussed and prospected. Download figure Download PowerPoint Next article FiguresReferencesRelatedDetails Issue AssignmentNot Yet AssignedSupporting Information Copyright & Permissions© 2023 Chinese Chemical Society Downloaded 0 times PDF downloadLoading ...