期刊
MATERIALS CHEMISTRY FRONTIERS
卷 7, 期 5, 页码 789-805出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2qm01147f
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The poor stability of halide perovskite solar cells (PSCs) due to halide-related vacancy defects has hindered their commercialization. This review focuses on the properties of pseudohalides and superhalogens in perovskites, aiming to achieve high structural stability and improve the performance of PSCs. Perspectives for future efforts are also discussed.
Recently, halide perovskite solar cells (PSCs) have accomplished the most remarkable progress in emerging photovoltaic technology. However, their poor stability hinders the route to commercialization. Notably, the high chemical activity of halides such as I- and Br- and the formed halide-related vacancy defects lead to the instability of PSCs. In spite of the importance of X-site anions, more and more works have been devoted to the polyatomic pseudohalides and superhalogens in perovskites. In this context, this review will focus on the basic understanding of the structural and photoelectric properties of pseudohalides and superhalogens. We comprehensively summarize the current research progress of SCN-, HCCO-, Ac-, BF4-, BH4-, and PF6- anions to realize high structurally stable perovskites and related solar cells. Based on these observations, some perspectives on future efforts toward achieving highly stable PSCs are proposed and discussed.
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