Li Mingyang, Lin Jiawei, Wang Na, Liu Kunjie, Fan Liubing, Guo Zhongnan, Yuan Wenxia, Zhao Jing, Liu Quanlin
The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China.
Department of Chemistry, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Inorg Chem. 2022 Sep 26;61(38):15016-15022. doi: 10.1021/acs.inorgchem.2c01900. Epub 2022 Sep 12.
Recently, excellent optical properties of low-dimensional organic-inorganic metal halides, stemming from their tunable structure and optoelectronic properties, have been demonstrated. The synthetic method is critical because it is highly related to the structure and properties of the halide. Herein, we obtain two different antimony bromides, (Bmpip)SbBr and (Bmpip)SbBr, which both possess the 2/ space group having different crystal structures, and this confirms the important influence of synthesis on the single-crystal structure. (Bmpip)SbBr contains Bmpip and [SbBr] pyramids, and (Bmpip)SbBr consists of Bmpip and Sb-based dimers [SbBr]. Under 400 nm excitation, (Bmpip)SbBr exhibits a 640 nm orange emission with a quantum yield of ∼11.5% owing to Sb 5s electron luminescence. A diode was fabricated by (Bmpip)SbBr and commercial phosphors and showed a high color render index of 92. Our work reveals the effect of the preparation method on the crystal structure. A luminescent material was finally identified.
最近，低维有机-无机金属卤化物因其可调节的结构和光电特性展现出了出色的光学性能。合成方法至关重要，因为它与卤化物的结构和性质高度相关。在此，我们获得了两种不同的溴化锑，(Bmpip)SbBr和(Bmpip)SbBr，它们都具有不同晶体结构的2/空间群，这证实了合成对单晶结构的重要影响。(Bmpip)SbBr包含Bmpip和[SbBr]金字塔，而(Bmpip)SbBr由Bmpip和基于Sb的二聚体[SbBr]组成。在400 nm激发下，由于Sb 5s电子发光，(Bmpip)SbBr呈现出640 nm的橙色发射，量子产率约为11.5%。通过(Bmpip)SbBr和商用磷光体制备了一个二极管，其显色指数高达92。我们的工作揭示了制备方法对晶体结构的影响。最终确定了一种发光材料。
