Impact Factor:13.3
DOI number:10.1002/smll.202305083
Affiliation of Author(s):青岛科技大学
Teaching and Research Group:材料化学教研室
Journal:small
Abstract: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.
Indexed by:Journal paper
Discipline:Engineering
First-Level Discipline:Materials Science and Engineering
Document Type:J
Translation or Not:no
Date of Publication:2023-11-27
Included Journals:SCI
Links to published journals:https://onlinelibrary.wiley.com/doi/abs/10.1002/smll.202305083