【摘 要】
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Hybrid organic-inorganic perovskite solar cells (PSCs) have made rapid progress in efficiency from 3.8％ to 25.5％ in the past decade [1-3].The hybrid perovskite ma
【机 构】
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School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 61
论文部分内容阅读
Hybrid organic-inorganic perovskite solar cells (PSCs) have made rapid progress in efficiency from 3.8％ to 25.5％ in the past decade [1-3].The hybrid perovskite materials possess a 3D crystal structure with a chemical formula as ABX3, where A is a monovalent cation such as methylammonium (CH3NH3+, MA+) and formamidinium (HC(NH2)2+, FA+), and B is a divalent metal cation such as Pb2+, and X is a halide (I, Br, Cl or their mixed) [4].However, the long-term stability issue has hindered large-scale commercialization of PSCs owing to the degradation and volatilization of organic cations (i.e., MA+ and FA+) [5,6].Therefore, replacing the volatile organic cations with inorganic cesium (Cs+) cation have drawn significant attention for achieving highly stable perovskite materials and devices [7,8].
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