柠檬酸溶胶-凝胶法制备CaYAl_3O_7:Ce^(3+),Tb^(3+)蓝绿色荧光粉  

Preparation of CaYAl_3O_7:Ce^(3+), Tb^(3+) Blue-Green Phosphors by Sol-Gel Process

作　　者：戴俊[1] 林祥[1] 乔旭升[1] 樊先平[1] 

机构地区：[1]浙江大学,浙江杭州310027

出　　处：《稀有金属材料与工程》2010年第S2期313-316,共4页Rare Metal Materials and Engineering

基　　金：浙江省科技计划项目(2008C21051)

摘　　要：以柠檬酸为螯合剂,金属硝酸盐为原料,采用溶胶-凝胶法制备CaYAl3O7:Ce3+,Tb3+蓝绿色荧光粉。应用差热分析仪、X射线衍射仪和荧光光谱仪表征前驱体热分解特性及在不同制备条件获得的荧光粉晶体结构和发光性质。结果表明,在还原气氛下经900℃煅烧就可获得发光性能优异的CaYAl3O7:Ce3+,Tb3+蓝绿色荧光粉,Ce3+和Tb3+之间的有效能量转移导致了360nm激发下可产生较强的Tb3+发光。Preparation of CaYAl3O7:Ce3+, Tb3+ phosphors by sol-gel process and their luminescence properties were investigated. The energy transfer efficiencies between Ce3+ ions and Tb3+ ions resulted in strong emission of Tb3+ ions by 360 nm light as excitation source. The CaYAl3O7:0.03Ce3+,0.19Tb3+ phosphors which were sintered for at 900 ℃ 6 h in reducing atmosphere can emit stronger blue-green light.

关 键 词：溶胶-凝胶法 CaYAl3O7:Ce3+ Tb3+荧光粉 发光 

分 类 号：TN104.3[电子电信—物理电子学]