稀土铕离子掺杂激活的LED用红色荧光材料研究

Research of Rare Earth Europium Ion Doped LED with Red Fluorescent Material

白光LED作为一种新型照明光源,具有体积小、发光效率高、节能、长寿命、绿色环保等优点。稀土铕离子掺杂的LED用红色荧光粉是实现高显色指数和低色温的白光LED不可或缺的组分材料,且其组合的LED具有良好的发光特性和发光效率。本文从制备工艺和不同基质体系出发,分析了掺铕红色荧光材料的制备方法及其优缺点,并根据所采用的基质材料及制备方法的不同,对铕掺杂的红色荧光机理进行了探讨,并对掺铕红色发光材料的应用前景进行了展望。

As a new lighting source, white LED has the advantages of small size, high luminous efficiency, en-ergy saving, long life and environmental protection. The red phosphor used for LED doped with rare earth europium ion is an indispensable component material to realize high color rendering index and low color temperature, and the combined LED has good luminescence characteristics and luminous efficiency. Based on the preparation technology and different matrix systems, the preparation methods and advantages and disadvantages of europium-doped red fluorescent ma-terials were analyzed in this paper. According to the different matrix materials and preparation methods, the mechanism of europium-doped red fluorescent materials was discussed, and the ap-plication prospect of europium-doped red luminescent materials was forecasted.