影响因子：13.3

DOI码：10.1002/smll.202305083

所属单位：青岛科技大学

教研室：材料化学教研室

发表刊物：small

摘要：Zero-dimensional (0D) organic metal halides comprising heterogeneous metal cations in single phase can achieve multiple luminous emissions enabling them toward multifunctional light-emitting applications. Herein, A novel single crystal of (C8H20N)4SbMnCl9 containing two luminescent centers of [SbCl5]2− pentahedrons and [MnCl4]2− tetrahedrons is reported. The large distance between Sb–Sb, Mn–Mn, and Sb–Mn as well as theory calculation indicate negligible interaction between individual centers, thus endowing (C8H20N)4SbMnCl9 with excitation-dependable and efficient luminescence. Under near-UV excitation, only orange emission originates from self-trapped excitons recombination in [SbCl5]2− pentahedron occurs with photoluminescence quantum yield (PLQY) of 91.5%. Under blue-light excitation, only green emission originating from 4T1-6A1 transition of Mn2+ in [MnCl4]2− tetrahedrons occurs with PLQY of 66.8%. Interestingly, upon X-ray illumination, both emissions can be fully achieved due to the high-energy photon absorption. Consequently, (C8H20N)4SbMnCl9 is employed as phosphors to fabricate white light-emitting diodes optically pumped by n-UV chip and blue-chip thanks to its excitation-dependable property. Moreover, it also shows promising performance as X-ray scintillator with low detection limit of 60.79 nGyair S−1, steady-state light yield ≈54% of commerical scintillaotr LuAG:Ce, high resolution of 13.5 lp mm−1 for X-ray imaging. This work presents a new structural design to fabricate 0D hybrids with multicolor emissions.

论文类型：期刊论文

学科门类：工学

一级学科：材料科学与工程

文献类型：J

是否译文：否

发表时间：2023-11-27

收录刊物：SCI

发布期刊链接：https://onlinelibrary.wiley.com/doi/abs/10.1002/smll.202305083