期刊
MATERIALS TODAY PHYSICS
卷 35, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.mtphys.2023.101111
关键词
0D metal halides; Thermally induced blueshift; Polyhedral distortion; Dual emissions; Temperature sensing
This study investigates thermo-responsive luminescence in doped Cs2ZnCl4 crystals. The thermal elevation of the orbital state of dopant ions leads to a blueshift of self-trapped exciton (STE) emissions. By examining doped Cs2ZnCl4 crystals, the polyhedral distortion and its effect on luminescence properties are quantitatively addressed. Dual emissions in Sb3+/Mn2+ co-doped Cs2ZnCl4 with distinct luminescence responses to thermal stimuli are synthesized, enabling a new tactic for tunable thermochromic luminescence.
All-inorganic zero-dimensional (0D) metal halides are highly attractive for optoelectronic applications, but rational control over the temperature dependence of luminescence in these materials remains an unfulfilled task. This study presents an investigation of thermo-responsive luminescence in doped Cs2ZnCl4 crystals. Density functional theory calculations reveal a thermal elevation of the orbital state of the dopant ions originating from distortion of the local coordination polyhedron, leading to a blueshift of the self-trapped exciton (STE) emissions. By examining a series of Cs2ZnCl4 crystals doped with Sb3+, Te4+, Cu+, and Mn2+, we quantitatively address the polyhedral distortion and its effect on the luminescence properties. Owing to the 0D nature of the host material, we further synthesize Sb3+/Mn2+ co-doped Cs2ZnCl4 with dual emissions that display distinct luminescence responses to thermal stimuli. The advances in these optical materials enable a new tactic to construct tunable thermochromic luminescence for applications such as thermal sensing and optical encryption.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据