A robust anti-thermal quenching red phosphors:Cs_(2)ZrCl_(6):Sb^(3+)OA

Most of phosphors undergo thermal quenching(TQ)at high temperature,due to thermal-activated non-radiative transitions.TQ effects lead to significant reduced luminous efficiency of phosphors at high operation temperature,hindering their application in high power phosphor-converted white lightemitting diodes(WLED).Here,we report a zero-dimensional metal halide perovskite:Cs_(2)ZrCl_(6):Sb^(3+),exhibiting robust anti-TQ red emission up to 500 K,comparable to the mainstream anti-TQ phosphors(e.g.K_(2)SiF_(6):Mn^(4+)).The hetero-valent doping of Sb^(3+)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 white light-emitting diode(WLED)device,achieving stable output light intensity and chromaticity up to 2000 mA.