摘要
用溶胶-凝胶法合成等离子显示器(PDP)用红色荧光粉(Y,Gd)BO3∶Eu,研究其在真空紫外光激发下的发光特性.研究结果表明,用溶胶-凝胶法在800℃下即能合成类球形形貌,粒度小,结晶性能好的(Y,Gd)BO3∶Eu荧光粉,合成温度比传统高温固相法低400℃.该方法合成的(Y,Gd)BO3∶Eu荧光粉在147 nm激发下,发光强度比固相法提高10%,且在626 nm处(Eu3+离子的电偶极跃迁5D0→7F2)的纯红色发射峰强度显著提高,因此用溶胶-凝胶法制备(Y,Gd)BO3∶Eu可以有效的提高荧光粉的发光效率和色纯度.
Red phosphor（Y, Gd）BO3 ： Eu for plasma display pand （PDP） was synthesized by using sol-gel method at low temperature and its photoluminescence properties of excitation by vacuum ultraviolet were studied as well. The results showed that （Y, Gd）BO3 ： Eu had small particles size and was well crystallized at 800 ℃ in sol-gel process, in which the temperature was 400 ℃ lower than that for solid state reaction. With 147 nm excitation, the luminous intensity of the red phosphor synthesized with this method was 10% higher than that prepared by solid state reaction. The pare red emission intensity of this red phosphor at 626 nm, which was caused by ^5Do→^7F2 transition of Eu （a typical electric dipole transition）, was remarkably improved. Thus, it could be concluded that sol-gel processing could efficiently improve the luminescent efficiency and color purity of phosphors （Y,Gd）BO3 ： Eu.
出处
《兰州理工大学学报》
CAS
北大核心
2009年第3期68-71,共4页
Journal of Lanzhou University of Technology
基金
兰州理工大学博士科研启动基金(0212)的资助
