首页|NaGd0.4Eu0.6Mg1-xZnxWO6 solid solution red phosphors:Microstructure variation and luminescence enhancement induced by Zn2+-doping

NaGd0.4Eu0.6Mg1-xZnxWO6 solid solution red phosphors:Microstructure variation and luminescence enhancement induced by Zn2+-doping

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Red phosphor is an important component of the phosphor-converted white light-emitting diodes(pc-WLEDs).The development of the novel red phosphor with excellent luminescence properties is of great significance for high performance WLEDs.In this study,NaGd0.4Eu0.6Mg1-xZnxWO6 red phosphors with excellent luminescence properties were successfully synthesized and systematically investigated.Our results show that the Zn2+-doping concentration has significant effect on the microstructures and luminescence properties of the NaGd0.4Eu0.6Mg1-xZnxWO6 phosphors.The NaGd0.4Eu0.6Mg1-xZnxWO6(0≤ x ≤ 0.7)samples are well crystallized pure solid solution sub-microcrystals,whereas the phase purity gradually decreases at 0.7＜x ≤ 1.0.The NaGd0.4Eu0.6Mg1-xZnxWO6(0＜x ≤ 0.5)phosphors have stronger emissions than NaGd0.4Eu0.6MgWO6,and the optimized NaGd0.4Eu0.6Mg0.9Zn0.1WO6 phosphor possesses the best luminescence properties including thermal stability,CIE chromaticity coordinate,life time and quantum yield.The packaged WLED using NaGd0.4Eu0.6Mg0.9Zn0.1WO6 phosphor emits bright white light with higher CRI,lower CCT,and chromaticity coordinate close to the pure white light.The developed NaGd0.4Eu0.6Mg1-xZnxWO6 phosphors have potential application in lighting and display.This work can offer an effective strategy for boosting luminescence properties of tungstate phosphors with the double perovskite structure.

Double perovskiteTungstate phosphorZn2+-dopingMicrostructureLuminescenceRare earths

Yu Gao、Jiayang Liao、Mingyi Zhang、Qingmei Tang、Ting Zhou、Mengjiao Liu、Yan Zhao、Xin Lai、Daojiang Gao

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College of Chemistry and Materials Science,Sichuan Normal University,Chengdu 610066,China

National Natural Science Foundation of ChinaNatural Science Foundation of Sichuan ProvinceNatural Science Foundation of Sichuan Province

621041642022NSFSC20012022NSFSC1212

2024

10.1016/j.jre.2023.07.003

稀土学报(英文版)
中国稀土学会

稀土学报(英文版)

CSTPCDEI
影响因子：1.3
ISSN：1002-0721
年,卷(期)：2024.42(7)