Xu M, Chang J, Wang J, Wu C, Hu F
Opt Express. 2019 Jan 21;27(2):872-885. doi: 10.1364/OE.27.000872.
LD chips, combined with phosphor converters, are considered as optimum candidates for high brightness lighting. In this work, AlO-YAG:Ce composite ceramics were prepared as the phosphor converters. The sintering temperature and the sintering additives were optimized to obtain the highest quantum efficiency. The effect of the molar ratio of AlO to YAG:Ce on the performance of the ceramics that were excited by the LD chips was studied. The results show that the light extraction efficiency from the ceramic surfaces increases with the increasing molar ratio of AlO to YAG:Ce. Moreover, the improved thermal conductivity caused the ceramics with higher molar ratio of AlO to YAG:Ce show alleviative luminescence saturation and improved reliability.
激光二极管（LD）芯片与荧光粉转换器相结合，被认为是高亮度照明的最佳候选方案。在这项工作中，制备了AlO-YAG:Ce复合陶瓷作为荧光粉转换器。对烧结温度和烧结添加剂进行了优化，以获得最高的量子效率。研究了AlO与YAG:Ce的摩尔比对由LD芯片激发的陶瓷性能的影响。结果表明，陶瓷表面的光提取效率随着AlO与YAG:Ce摩尔比的增加而提高。此外，热导率的提高使得AlO与YAG:Ce摩尔比更高的陶瓷表现出缓解的发光饱和现象和更高的可靠性。
