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Composition and luminescence properties of highly robust green-emitting LuAG:Ce/Al_(2)O_(3)composite phosphor ceramics for high-power solid-state lighting

查看全文 作　　者：Ziqiu [1,2]Cheng;Xin [1,2]Liu;Xinrong [3]Chen;Jian [3]Xu;Yanbin [1,4]Wang;Tengfei [1,2]Xie;Lexiang [1,2]Wu;Zhengfa [1,2]Dai;Guohong [1,2]Zhou;Jun [5,6]Zou;Jiang [1,2]Li 高影响力作者 机构地区：[1]Transparent Ceramics Research Center,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201899,China;[2]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;[3]Lab of New Energy Materials and Devices,School of Physics and Electronic Information,Henan Polytechnic University,Jiaozuo 454000,China;[4]School of Material Science and Engineering,Jiangsu University,301 Xuefu Road,Zhenjiang 212013,China;[5]Shanghai Institute of Technology,Shanghai 201418,China;[6]Institute of New Materials&Industrial Technology,Wenzhou University,Wenzhou 325024,China高影响力机构 出　　处：《Journal of Advanced Ceramics》索引2023年第12卷第3期,共9页高影响力期刊 基　　金：supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA22010301);the key research project of the frontier science of the Chinese Academy of Sciences(Grant No.QYZDB-SSW-JSC022). 摘　　要：The major advantage of laser lighting over white light-emitting-diode is the possibility to achieve ultra-high luminance.However,phosphors usually suffer laser-induced luminescence saturation,which limits the peak luminance of laser lighting devices.The aim of the present study is to develop LuAG:Ce/Al_(2)O_(3)composite ceramics(LACCs)with a high saturation threshold for high-luminance laser lighting.Owning to the rigid crystal structure,proper synthetic process,and optimized thermal design,the LACCs possess small thermal quenching(16%loss in luminescence at 225℃),high quantum yield(>95%),and excellent luminescence properties.When the LACCs are irradiated by blue laser diodes in a reflection mode,a high luminous flux of 4634 lm and luminous efficacy of 283 lm·W^(−1)are realized.Furthermore,they show no sign of luminescence saturation even when the power density reaches 20.5 W·mm^(−2).With these favorable properties,the designed LACCs show great potential in high-luminance laser lighting. 关 键 词：LuAG:Ce/Al_(2)O_(3)composite ceramics(LACCs) luminescence saturation luminous efficacy high-luminance laser lighting
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