激光照明应用钇铝石榴石荧光玻璃显色性能优化  

Yttrium Aluminum Garnet Phosphor-in-glass with Improved Color-rendering for Laser Lighting

作　　者：孟遥 邾强强 黄敏航 胡翔宇 张宏 王乐 MENG Yao;ZHU Qiang-qiang;HUANG Min-hang;HU Xiang-yu;ZHANG Hong;WANG Le(College of Optics and Electronic Science and Technology, China Jiliang University, Hangzhou 310018, China)

机构地区：[1]中国计量大学光学与电子科技学院,浙江杭州310018

出　　处：《发光学报》2021年第10期1619-1626,共8页Chinese Journal of Luminescence

基　　金：浙江省杰出青年基金(LR19F050001);国家自然科学基金(51832005,62075203,51702339);国家重点研发计划(2017YFB0403100,2017YFB0403105)资助项目。

摘　　要：Y_(3)Al_(5)O_(12)∶Ce^(3+)(YAG∶Ce^(3+))荧光玻璃由于光谱中缺少红绿光成分,难以满足高显色激光照明的应用需求。本研究工作基于钇铝石榴石结构荧光材料宽光谱、高光效及高稳定的特性,选用绿色发光Y_(3)(Ga,Al)_(5)O_(12)∶Ce^(3+)(YAGG∶Ce^(3+))和橙色发光(Y,Gd)_(3)Al_(5)O_(12)∶Ce^(3+)(GdYAG∶Ce^(3+))荧光材料作为荧光玻璃中的荧光组分,获得了具有较高显色性能的荧光玻璃材料。详细研究了制备温度、荧光粉和玻璃粉的比例、YAGG∶Ce^(3+)和GdYAG∶Ce^(3+)荧光粉的比例以及样品厚度对其性能的影响。通过制备工艺及材料组分的优化,YAGG∶Ce^(3+)/GdYAG∶Ce^(3+)荧光玻璃样品在蓝色激光激发下的显色指数(Ra)可以达到79.7,相比YAG∶Ce^(3+)荧光玻璃提升了13.7%左右。具有最优Ra的荧光玻璃样品的发光饱和阈值为1.63 W/mm^(2),此时样品的发光效率可以达到163.14 lm/W,可应用于激光照明领域实现白光照明品质的提升。Due to the spectrum defect of the red and green light component,the Y_(3)Al_(5)O_(12)∶Ce^(3+)(YAG∶Ce^(3+))phosphor-in-glass(PiG)cannot be applied in high-quality laser lighting.Based on the yttrium aluminum garnet luminescent material with wide spectrum,high luminous efficiency and high stability,the green-emitting Y_(3)(Ga,Al)_(5)O_(12)∶Ce^(3+)(YAGG∶Ce^(3+))and orange-emitting(Y,Gd)_(3)Al_(5)O_(12)∶Ce^(3+)(GdYAG∶Ce^(3+))phosphors were used as raw materials to fabricate PiG,and the PiG sample with improved color-rendering was achieved.The effects of fabrication temperature,phosphor-to-glass ratio,YAGG∶Ce^(3+)/GdYAG∶Ce^(3+)ratio,and the thickness on properties of PiG samples were studied in detail.By optimizing synthetic conditions and PiG components,the color rendering index(Ra)of achieved PiG can reach 79.7,showing 13.7%improvement compared with that of YAG∶Ce^(3+)PiG.The luminescence saturation threshold of PiG sample with optimal Ra is 1.63 W/mm^(2),and the luminous efficacy can reach 163.14 lm/W,suggesting a promising application in laser lighting for achieving better lighting effects.

关 键 词：激光照明 钇铝石榴石 荧光玻璃 高显色 

分 类 号：O482.31[理学—固体物理]