多孔状的Eu：Y2O3／SiO2的合成与光学性能  

Synthesis and optical properties of porous Eu∶Y_2O_3/SiO_2

作　　者：曾庆光[1,2] 张增明[1] 丁泽军[1] 王忆[2] 盛业青[2] 罗观和[2] 赖绍全[2] 

机构地区：[1]合肥微尺度物质科学国家实验室,中国科学技术大学物理系,安徽合肥230026 [2]五邑大学数学物理系,薄膜与纳米材料研究所,广东江门529020

出　　处：《电子显微学报》2008年第1期16-20,共5页Journal of Chinese Electron Microscopy Society

基　　金：国家自然科学基金资助项目(No.10574121);教育部博士点基金和中国科学院基金;江门市科技计划项目(江财工[2007]28号)资助项目~~

摘　　要：采用凝胶溶胶法合成了亚微米尺寸的多孔Eu:Y2O3/SiO2(摩尔比Eu∶Y2O3∶SiO2=5∶100∶100)样品,并用扫描电镜、傅立叶变换红外光谱仪、拉曼光谱仪和荧光光谱仪对其形貌、结构和光学性能进行了研究。结果表明,退火后的合成产物是一种含有大量孔隙的块体。这是因为在退火之后,样品中绝大部分的—OH、—C=O基团和一些晶格缺陷等被消除。荧光光谱测量结果显示,样品在退火前Eu3+离子基本上不发光,但在经过720℃下退火6 h以后,Eu3+离子发出的荧光非常强。Submicron scale porous samples of silical dioxide/yttria doped with europium ions （ Eu ： Y2O3/SiO2, molar ratio Eu ： Y2O3 ： SiO2 - 5 ： 100： 100） were synthesized by a sol-gel method. The morphology and optical property of the samples were characterized by scanning electron microscope, FT-IR, Raman and fluorescence spectra, respectively. It is found that, the product was in a block microscture with many tiny holes. The reason may be that, the -OH and -C = O and crystal defects were eliminated. The fluorescence spectrum measurement showed that, for the sample without annealing treatment the photo emission of Eu^3＋ ions could not be observed. But for the sample annealed at 720℃ for six hours the fluorescence intensity of the Eu^3＋ ions was very strong.

关 键 词：Eu:Y2O3/SiO2 扫描电镜 荧光 

分 类 号：TB383.4[一般工业技术—材料科学与工程]