PDP用球形荧光粉(Y,Gd)BO_3:Eu的研究  

Study on preparation of PDP phosphor(Y,Gd)BO_3:Eu with spherical shape

作　　者：李许波[1,2] 姜锋[1] 丁建红[1,2] 倪海勇[2] 

机构地区：[1]中南大学材料科学与工程学院,湖南长沙410083 [2]广州有色金属研究院稀有金属研究所,广东广州510650

出　　处：《材料研究与应用》2009年第4期269-272,共4页Materials Research and Application

摘　　要：采用超声波雾化和高温烧结相结合的方法合成了(Y,Gd)BO_3:Eu荧光粉,考察了分散剂、分散剂用量、合成温度对粉体形貌的影响.研究结果表明:以氨水和柠檬酸作分散剂,柠檬酸的用量为r(柠檬酸)=0.1,控制溶液的pH为4～5,在1000℃下合成,得到了亮度高、实心、球形的荧光粉颗粒,并且经二次热处理后粉体形貌不发生变化.The red phosphor of （Y,Gd）BO3：Eu was synthesized by combining ultrasonic spray and high temperature sinter. The effects of the different dispersants, the concentration of the dispersant and the synthesis temperature on the morphology of powdered phosphor were studied. A good phosphor with a spherical shape, dense morphology and high lighting is obtained at the synthesis temperature of 1000℃ by adding the NH3 · H2O and citric acid into the precursor with a pH=4-5. The morphology of powder particles wasn＇t changed after the second heat treatmen.

关 键 词：(Y Gd)BO_3 Eu荧光粉 等离子体显示屏(PDP) 超声波 喷雾热分解 

分 类 号：TF123.1[冶金工程—粉末冶金]