发光学报2021，Vol.42Issue(10)：1520-1530,11.DOI:10.37188/CJL.20210116
高亮度固态照明用黄绿光发射Ce:LuAG透明陶瓷
Green-yellow Emission Ce:LuAG Transparent Ceramics for High-brightness Solid-state Lighting
摘要
Abstract
A series of (CexLu1-x)3Al5O12(Ce:LuAG, x=0. 0005, 0. 001, 0. 002, 0. 003, 0. 004) transparent ceramics were prepared via high-temperature reactive sintering under vacuum. The in-line transmittances of these transparent ceramics are higher than 75％ at 500 -800 nm with a thickness of 1. 0 mm. Absorption and emission properties of ceramics with different Ce3+ concentrations excited by 454 nm blue LED were investigated. An adjusta-ble correlated color temperature(CCT)(5653-7433 K) was obtained. The as-prepared ceramics show remarkably superior thermal and luminescent properties:a low thermal quenching(7％ drop at 225℃), and a high luminous ef-ficacy of 179 lm/W were obtained in the 0. 1％Ce:LuAG ceramics(1. 0 mm thick) coupled with commercial blue In-GaN LED chips, which also shows increasing emission intensity with increasing input power(up to 3. 6 W). A high flux of 3646 lm was obtained with robust Ce:LuAG ceramics irradiated with a high laser power density of 24. 6 W/mm2 . Obviously, the fabricated transparent Ce:LuAG ceramics are quite prospective as a highly efficient and ther-mally robust green-yellow color converter for high-power solid-state lighting( SSL) application.关键词
发光饱和/Ce:LuAG陶瓷/颜色转换器/高亮度Key words
luminescence saturation/Ce:LuAG ceramics/color converter/high-brightness分类
数理科学引用本文复制引用
刘强,李淑星,邹军,李江,李万圆,刘欣,朱雨轩,邓陶丽,李晓英,陈鹏辉,田丰,谢腾飞..高亮度固态照明用黄绿光发射Ce:LuAG透明陶瓷[J].发光学报,2021,42(10):1520-1530,11.基金项目
国家重点研发计划(2017YFB0310500) （2017YFB0310500）
国家自然科学基金(61775226) （61775226）
中国科学院前沿科学重点研究计划(QYZDB-SSW-JSC022)资助项目Supported by National Key R&D Program of China(2017YFB0310500) （QYZDB-SSW-JSC022）
National Natural Science Foundation of China(61775226) （61775226）
Key Research Project of the Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-JSC022) （QYZDB-SSW-JSC022）
