制备条件对溶胶凝胶制备Tb_3Al_5O_(12)∶Ce^(3+)荧光粉性能的影响  

Effect of Fabrication Conditions on Properties of Ce^(3+) Doped Terbium Aluminum Garnet Phosphor by Sol-Gel Method

作　　者：龚芮[1,2,3] 任洪波[2] 朱家艺[2] 毕于铁[2] 徐业伟[1] 张林[3] 

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010 [2]西南科技大学极端条件物质特性实验室,四川绵阳621010 [3]中国工程物理研究院激光聚变中心,四川绵阳621900

出　　处：《西南科技大学学报》2017年第2期7-11,17,共6页Journal of Southwest University of Science and Technology

基　　金：国家自然科学基金项目(51502274);西南科技大学博士研究基金(15zx7137);极端条件物质特性联合实验室研究基金(13zxjk04;14tdjk03)

摘　　要：采用溶胶凝胶法在不同柠檬酸量和干燥温度下制备了Ce^(3+)掺杂的TAG荧光粉,同时研究了Ce^(3+)掺杂浓度对TAG粉体性能的影响。结果表明:柠檬酸的量和干燥温度对TAG荧光性能有重要影响。在180℃下干燥,有效去除了前驱体中的结合水,从而降低了TAG相的转变温度,TAG最大相转变温度出现在877.5℃;提高柠檬酸的量能有效减少颗粒的团聚,从而增强粉体的荧光性能;TAG:Ce^(3+)荧光粉的发光强度随着Ce^(3+)浓度的增加呈现先增加后降低的趋势,最优掺杂摩尔分数为1%,对应的最大发射波长为534 nm。The Ce^3＋doped terbium aluminum garnet（ Tb_3Al_5O_（12）∶ Ce,TAG： Ce） phosphor was prepared by sol-gel method with different amount of citric acid in drying tempereture. The effects of Ce^3＋doped concentration on the emission intensity,maximum emission band of the TAG： Ce phosphor were also discussed in detail. The result showed that the amount of citric acid and drying temperature could affect the luminescent properties of the TAG：Ce phosphor. The molecular water was removed by drying at 180 ℃,which brings a good sintering activity. Due to its good sintering activity,the temperature of maximum phase transition of TAG was observed at a lower temperature of 877. 5 ℃. The emission intensity first increased and then decreased with the inereasing of the concentration of Ce^3＋. The optimum doping concentration of Ce^3＋for the TAG：Ce phosphor was about 1% corresponding to the highest emission intensity at 534 nm.

关 键 词：Ce^3+掺杂 TAG 溶胶凝胶法 荧光粉 荧光强度 

分 类 号：TQ422[化学工程]