Year: 2026
Type: article
Abstract: Most of phosphors undergo thermal quenching (TQ) at high temperature, due to thermal-activated non-radiative transitions. TQ effect led to significant reduced luminous efficiency of phosphors at high operation temperature, hindering their application in high power phosphor-converted white light-emitting diodes (WLED). Here, we report a zero-dimensional metal halide perovskite: Cs2ZrCl6:Sb3+, exhibiting robust anti-TQ red emission up to 500 K, comparable to the mainstream anti-TQ phosphors (e.g. K2SiF6:Mn4+). The hetero-valent doping of Sb3+ induces structure defects of host and thus compensate the non-radiative emission loss through thermal accelerated energy transfer from defects to emitter at high temperature. We assembled the red anti-TQ phosphor into a WLED device, achieving stable output light intensity and chromaticity up to 2000 mA.
Source: Nano Research
Authors: Haoyi Zhang, Jingtao Jia, Baowei Zhang, Siyu Lu
Institution: Zhengzhou University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $5,290
OpenAlex ID: W7123577116