发光学报2023，Vol.44Issue(6)：964-974,11.DOI:10.37188/CJL.20220435
高亮度固态照明用LuYAG∶Ce荧光陶瓷
LuYAG∶Ce Transparent Ceramic Phosphors for High-brightness Solid-state Lighting Application
摘要
Abstract
Achieving high luminous efficiency,high brightness and good thermal stability is an urgent requirement for solid-state lighting.Therefore,the high-performance color converters for high-power light-emitting diodes or laser diodes(LEDs/LDs)are significant to be explored.In this work,an effective strategy to improve the luminescent properties of YAG∶Ce color converters through method of component regulation was realized in YAG∶Ce transparent ceramic phosphors(TCPs)by incorporating Lu3+ions.We prepared(Lu,Y)3Al5O12∶Ce TCPs(LuYAG∶Ce TCPs)with different Lu3+contents by the solid-state reaction and vacuum sintering method.With the increase of Lu3+con-tent,the Y3+sites in LuYAG∶Ce TCPs were substituted by Lu3+sites,and the emission peaks of Ce3+were blue-shift-ed from 573 nm to 563 nm.When the Lu3+content was 60%,the emission intensity reached the maximum value and the luminous efficiency reached 114 lm?W-1 by combining the LuYAG∶Ce TCPs with a blue LED.A 450 nm laser source was used to construct a laser-driven lighting device in a transmission mode.As the power density increased from 2.2 W·mm-2 to 39 W·mm-2,the luminous flux of the TCP with 60%Lu3+substitution increased from 128 lm to 1 874 lm with no signs of luminescence saturation and the optimum luminous efficiency reached 128 lm·W-1.Thus,the LuYAG∶Ce TCPs are expected to be potential color conversion materials for high-power LEDs/LDs lighting.关键词
(Lu,Y)3Al5O12∶Ce荧光陶瓷/固态照明/荧光转换材料/高亮度Key words
(Lu,Y)3Al5O12∶Ce transparent ceramic phosphors(TCPs)/solid-state lighting/color conversion materi-als/high-brightness分类
数理科学引用本文复制引用
黄新友,李江,王雁斌,程梓秋,陈昊鸿,代正发,田丰,陈鹏辉,胡松,周国红..高亮度固态照明用LuYAG∶Ce荧光陶瓷[J].发光学报,2023,44(6):964-974,11.基金项目
中国科学院战略性先导科技专项(XDA22010301)Supported by The Strategic Priority Research Program of The Chinese Academy of Sciences(XDA22010301) （XDA22010301）
