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.
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)
出处
《发光学报》
EI
CAS
CSCD
北大核心
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。
关键词
激光照明
钇铝石榴石
荧光玻璃
高显色
laser lighting
yttrium aluminum garnet
phosphor-in-glass
high color-rendering
