荧光玻璃材料是解决大功率LED封装可靠性的一个有效途径。采用玻璃基质与荧光粉混合后高温烧结的方法制备硼硅基质的荧光玻璃。通过改变不同温度、时间以及荧光粉比例等条件, 研究了不同制备条件对荧光玻璃发光性能的影响。根据研究结果显示, 硼硅基质荧光玻璃在700 ℃, 30 min条件下可以获得较好的发光性能。温度过低、时间过短则基质玻璃与荧光粉熔合不均匀; 温度过高、时间过长则基质玻璃与荧光粉发生反应, 大幅降低荧光玻璃的性能。同时根据研究也得出体系中荧光粉质量比为3%时, 获得最佳发光性能。

The phosphor glass is a promising material to improve the package reliability of high power LED. The phosphor glass is prepared by sintering a mixture of phosphor and borosilicate glass in high temperature. The effects of different preparation conditions on the luminescent properties of the phosphor glass are researched by controlling the temperature, time and the ratio of phosphor. Research results show that the better luminescence performance is obtained when the mixture phosphor and borosilicate glass is sintered at 700 ℃ for 30 min. If the temperature is too low or the time is too short, the phosphor would not be uniformly dispersed in the phosphor glass. If the temperature is too high or the time is too long, the luminescent properties of the phosphor glass would be decreased because of the reactions between the glass matrix and the phosphor. According to the research results, the best luminescence performance is gained as the mix of 3 wt% phosphor.