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论文类型：会议论文
发表时间：2018-01-01
收录刊物：CPCI-S
卷号：10724
关键字：Perovskite; lead-free perovskite; bismuth-based perovskite; low bandgap; non-toxic material; solar cell
摘要：In recent years, lead-based perovskites have become the most promising photovoltaic material showing excellent photovoltaic performances. However, the lead-based perovskite encounters instability and toxicity issues caused by the generation of Pb2+, which is highly not beneficial to environment. In this study, we firstly reported the synthesis and characterization of a novel lead-free mixed chalcogen-halogen perovskite material, MABiI(2)S (MBIS), and determined its physical and optical properties by various testing methods. The MBIS possesses a low bandgap of 1.52 eV and exhibits good absorptions across the visible light spectrum. It is also worth noting that the MBIS displayed absorption up to over 1000 nm.