大功率白光LED用高效稀土红色发光玻璃陶瓷与器件研究

大功率白光LED是未来通用照明的主流技术，然而，高的芯片结温已经成为大功率白光LED器件所面临的主要技术瓶颈。与传统“LED芯片+荧光粉+封装胶”技术相比，“LED芯片+荧光玻璃陶瓷”白光方案在高结温下具有优良的热传导性能、热稳定性和光稳定性，因而成为大功率白光LED研究的前沿热点，其中荧光玻璃陶瓷则成为材料研究的重中之重。本申请面向未来高品质（高显色指数或暖色温）大功率白光LED器件应用要求，以母体玻璃与稀土荧光粉两个角度切入，系统开展具有橙红色或红色发射的高效新型稀土玻璃陶瓷材料设计、合成与结构/光学/热学性质表征工作，深入研究荧光粉与母体玻璃相互作用机理与规律，期望最终获得适用于“蓝光芯片+稀土玻璃陶瓷”白光LED方案，高效橙红色和红色发射的稀土玻璃陶瓷。同时，利用所合成的新型稀土玻璃陶瓷，进行大功率白光LED器件封装，开展新型稀土玻璃陶瓷在应用中的基础科学问题研究

High-power white LED is the mainstream technology for future general illumination. However, the high junction temperature has become a major bottleneck for high-power white LED devices to face. Compared with the traditional "LED chip + phosphor + organic resin" packaging technique, "LED chip + phosphor glass ceramic" is a new promising white lighting scheme, which has excellent thermal conductivity at high junction temperature, thermal stability and light stability. And thus it becomes hot issue in the field of high-power white LED frontier research, wherein researches on luminescent glass ceramic material has become the top priority. This proposal aims to systematically investigate design, synthesis, structure, optical and thermal properties of high efficient orange or red emitting rare earth luminescent glass ceramics for high power white LEDs with excellent white qualities (high CRI or low CCT) from aspects of glasses and rare earth phosphors. We anticipate that new high efficient orange or red emitting rare earth luminescent glass ceramics for high power white LEDs with excellent white qualities (high CRI or low CCT) will be developed after pursuing the interaction relationships or mechanisms between the glasses and rare earth phosphors. Finally, luminescent glasses converted high power white LEDs will also be demonstrated and the relationships between the luminescent glasses and device properties will be studied in depth.