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YAG:Ce3+ Transparent Ceramic Phosphors Brighten the Next-Generation Laser-Driven Lighting.
Advanced Materials ( IF 27.4 ) Pub Date : 2020-03-29 , DOI: 10.1002/adma.201907888
Qi Yao 1, 2 , Pan Hu 3 , Peng Sun 1 , Min Liu 4 , Rui Dong 1 , Kefu Chao 5 , Yongfu Liu 3 , Jun Jiang 1, 3 , Haochuan Jiang 1, 3
Affiliation  

Y3 Al5 O12 :Ce3+ (YAG:Ce3+ ) transparent ceramic phosphors (TCPs) are regarded as the most promising luminescent converter for laser-driven (LD) lighting. High-quality YAG:Ce3+ TCPs are still urgent for high efficiency LD lighting devices. YAG:Ce3+ TCPs in a vacuum ambience by using nano-sized raw materials are prepared. Controlling defects by adding nano-sized MgO and SiO2 simultaneously enables a high transmittance nearly 80%. After annealing in air furthermore, the luminous efficiency is enhanced greatly from 106 to 223 lm W-1 , which is the best result reported now for LD lighting. These results demonstrate that the optimizing YAG:Ce3+ TCPs in a fitting strategy will brighten once again in the next-generation LD lighting. Based on scanning electron microscopy (SEM) coupled with a cathodoluminescence system, defects and Ce3+ distributions in grains are identified directly for the first time.

中文翻译:

YAG:Ce3 +透明陶瓷荧光粉为下一代激光驱动照明增亮。

Y3 Al5 O12:Ce3 +(YAG:Ce3 +)透明陶瓷磷光体(TCP)被认为是用于激光驱动(LD)照明的最有前途的发光转换器。对于高效LD照明设备,高质量的YAG:Ce3 + TCP仍然是紧迫的。通过使用纳米级原料,在真空环境中制备了YAG:Ce3 + TCP。通过同时添加纳米级MgO和SiO2来控制缺陷,可实现近80%的高透射率。在空气中进一步退火之后,发光效率从106 lm W-1大大提高到223 lm W-1,这是目前报道的LD照明的最佳结果。这些结果表明,以合适的策略优化YAG:Ce3 + TCP将在下一代LD照明中再次变亮。基于扫描电子显微镜(SEM)和阴极发光系统,
更新日期:2020-03-29
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