A robust anti-thermal quenching red phosphors: Cs 2 ZrCl 6 :Sb 3+
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.
Fields of Study & Subjects
Luminescence Properties of Advanced Materials
Perovskite Materials and Applications
Organic Light-Emitting Diodes Research
Publication details
- Journal / source
- Nano Research
- Publisher
- Tsinghua University Press
- Volume
- 19
- Issue
- 3
- Pages
- 94908432–94908432
- Publication date
- 14 January 2026
- Language
- EN