Manipulation of Temperature-Dependent Luminescence Behaviors of Mn4+-Activated Fluoride Phosphors

• DOI: 10.1021/acs.jpclett.3c01391
• Publication Date: 2023-07-12T13:58:25Z
• Authors: Debao Zhang; Ji Zhou; Xuguang Cao; Xiaotian Ge; Fei Tang; Changcheng Zheng; Jiqiang Ning; Shijie Xu

In this paper, the giant tunability of thermal behaviors, i.e., from deterioration to substantial growth, is firmly demonstrated for vibronic luminescence Mn4+ ions in fluoride phosphors. Such peculiar behavior uncovered be associated with excitation a low-frequency phonon bath, and theoretical model involving excitation-wavelength-dependent populations levels temperature-dependent nonradiative recombination processes successfully constructed. Two main governing parameters, namely, activation energy Ea involved average ΔE, are thus determined distinct behaviors Mn4+-ion luminescence. This demonstration may pave way manipulating solids some extent.