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多孔状的Eu:Y2O3/SiO2的合成与光学性能
  • 期刊名称：《电子显微学报》，2008年27卷16-20页
  • 时间：0
  • 分类：O766[理学—晶体学] O433.54[机械工程—光学工程;理学—光学;理学—物理]
  • 作者机构：[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
  • 相关基金：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.
  • 相关项目：定量表面电子能谱中的表面效应问题研究
关键词： Eu:Y2O3/SiO2, 扫描电镜, 荧光, Eu： Y2 O3/SiO2 , SEM, fluorescence
中文摘要：

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舍有大量孔隙的块体。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Eu^3＋离子基本上不发光，但在经过720℃下退火6h以后，Eu^3＋离子发出的荧光非常强。

英文摘要：

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.

同期刊论文项目
定量表面电子能谱中的表面效应问题研究
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