Lead-free antimony-based halides bis(thiomorpholine) pentachloroantimonate(III) monohydrate

被引：6
作者：
Wei, Wen-Juan [1 ]
Gao, Hong-Qiang [1 ]
Li, Lin-Sui [1 ]
Wu, Yun-Xuan [1 ]
Tan, Yu-Hui [1 ]
机构：
[1] Jiangxi Univ Sci & Technol, Engn Res Inst, Ganzhou 341000, Peoples R China
来源：
JOURNAL OF MOLECULAR STRUCTURE | 2021年 / 1227卷
基金：
中国国家自然科学基金;
关键词：
Lead-free halide perovskite; Phase transition; Dielectric; Photoluminescence; Band gap; ORGANIC-INORGANIC HYBRID; PEROVSKITES; TRANSITION; POLAR;
D O I：
10.1016/j.molstruc.2020.129681
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We have successfully synthesized a new antimony-based halide hydrate, bis(thiomorpholine) pentachloroantimonate(III) monohydrate (C4NSH10)(2)[SbCl5]center dot H2O (1, C4NSH10+ is thiomorpholine cation), which crystals in a centrosymmetric space group of Pbca. 1 features the R2MX5-type perovskite architecture and undergoes a first-order structural phase transition (PT) at 406.3 K, accompanying with prominent dielectric responses. The photoluminescence spectra reveal that 1 shows a broadband light emission and a long lifetime (2.77 mu s). In addition, the DFT calculation exhibits the organic thiomorpholine cation has a contribution to electronic band structures of 1, which is distinct with other halide bismuth (Bi) and antimony (Sb)-based hybrid perovskites. This finding opens up a potential pathway to construct new lead-free hybrid materials for application of the optoelectronics. (C) 2020 Elsevier B.V. All rights reserved.
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页数：6
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