文献类型：期刊文献

英文题名：Luminescence properties and luminous thermal stability of LiZnPO4:xEu3+ phosphor

作者：Zhang, Hongyan Zhang, WenXuan Zhu, Fusheng Chen, Jiayan Huang, Hongsheng

第一作者：张红燕;Zhang, Hongyan

通信作者：Huang, HS[1]|[14440eb2d63425adc30c9]黄宏升;[14440272dbd14ce5ad04b]黄宏升;

机构：[1]Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Peoples R China;[2]Key Lab Energy Chem Guizhou Univ, Guiyang 550003, Peoples R China;[3]China Zhenhua Grp Yunke Elect Co Ltd, Guizhou, Peoples R China

第一机构：贵州理工学院化学工程学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Peoples R China.|贵州理工学院化学工程学院;贵州理工学院;

年份：2026

卷号：362

外文期刊名：JOURNAL OF SOLID STATE CHEMISTRY

收录：;EI(收录号：20262520952577);WOS:【SCI-EXPANDED(收录号:WOS:001801048200001)】；

基金：This work was financially supported by Guizhou Provincial Science and technology plan project (Guizhou Kehe support [2023] general 144) ,the National Natural Science Foundation of China (21963006) , key laboratory of energy chemistry in Guizhou universities (Qian Jiao Ji [2022] 035) and the Students'Innovation and Entrepreneurship Training Program of Guizhou Institute of Technology (No. X202414440086) .

语种：英文

外文关键词：Phosphate; Luminescence properties; Decay curves; Luminous thermal stability

摘要：Eu3+-doped phosphate red phosphors, as key components for high-power white light-emitting diodes (WLEDs), still suffer from severe thermal quenching and large chromaticity coordinate shifts at temperatures above 150 degrees C, which seriously deteriorate luminous performance and color stability, limiting their practical applications in high-quality warm-white lighting. Eu3+-doped phosphate red phosphors, as key components for high-power white light-emitting diodes (WLEDs), still suffer from severe thermal quenching and large chromaticity coordinate shifts at temperatures above 150 degrees C, which seriously deteriorate luminous performance and color stability, limiting their practical applications in high-quality warm-white lighting. To address these bottleneck issues, a series of LiZnPO4:xEu3+ (x = 1-15 mol%) phosphors were successfully synthesized via a conventional hightemperature solid-state reaction, and their crystal structure, morphology, and photoluminescence properties were systematically investigated. X-ray diffraction results confirm a monoclinic structure with the C1c1 space group, and Eu3+ ions mainly occupy Zn2+ sites. The optimal doping concentration is 9 mol%, at which the phosphor shows strong red emission at 594 nm under 396 nm excitation, with the internal quantum efficiency of 74.4% and the fluorescence lifetime of 2.93 ms. At 150 degrees C, the phosphor retains 61% of its room-temperature emission intensity, with a small chromaticity coordinate shift of Delta x approximate to 0.003 and an activation energy of 0.2008 eV for thermal quenching. This work effectively alleviates the color drift and thermal quenching problems of Eu3+-doped phosphors. The developed LiZnPO4:Eu3+ phosphors provide a promising red emission candidate material for low-to-medium temperature driven high-performance warm white WLEDs.