Ce:LuAG粉体的溶胶-凝胶燃烧法制备和发光性能  

Synthesis of Ce:LuAG Powders by Sol-gel Combustion and Luminescent Properties

作　　者：陈杰[1] 张其冲 王志远[1] 胡飒英[1] 周鼎[1] 

机构地区：[1]上海应用技术学院材料科学与工程学院,上海201418

出　　处：《上海应用技术学院学报（自然科学版）》2014年第2期109-112,共4页Journal of Shanghai Institute of Technology: Natural Science

基　　金：上海应用技术学院科技发展基金资助项目(KJ2011-01);大学生科技创新项目(DCX2013-007;PE2013013)

摘　　要：以尿素、甘氨酸为燃烧助剂,采用低温溶胶-凝胶燃烧法制备多晶Ce离子掺杂Lu3Al5O12（Ce∶LuAG）粉体.X射线衍射（XRD）检测结果表明,前驱体在700℃条件下开始出现弱的晶化峰,850℃时晶化逐步完全,1 000℃时晶粒发育完善,得到单相Ce∶LuAG粉体,一次粒径约40 nm.紫外激发条件下,Ce掺杂LuAG粉体表现出涵盖480～700 nm的宽带发射,中心位置位于530 nm左右.随着煅烧温度的提高,两种燃烧助剂所得Ce∶LuAG粉体的发光强度明显增强,甘氨酸法所得粉体的分散性和发光强度均优于尿素法.Ce ions doped LuAG nanocrystalline powders were synthesized by low temperature sol-gel combustion method with urea or glycine as combustion adjuvant. XRD results showed that the precursor began to crystallize at 700℃, and Ce. LuAG pure phase could be obtained at 850, had high crystallinity at 1 000 ℃, the average crystallite size was about 40 nm. The main emission band of Ce. LuAG powders showed a wide range from 480 to 700 nm, centering on 530 nm. Both powders showed higher luminescence with raised calcinations temperature. Ce. LuAG powders synthesized by glycine as combustion adjuvant exhibited a better dispersily and higher photoluminescence than that of urea derived powders.

关 键 词：Ce离子 镥铝石榴石 荧光光谱 溶胶-凝胶燃烧法 

分 类 号：TB383.3[一般工业技术—材料科学与工程]