YAG:Ce3+ Transparent Ceramic Phosphors Brighten the Next-Generation Laser-Driven Lighting.,Advanced Materials

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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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