Eu^(3+)和Tb^(3+)掺杂硅酸钇纳米粉体的合成与表征  

Synthesis and Characterization of Eu^(3+) and Tb^(3+) Doped Yttrium Silicate Nanopowders

作　　者：张烨[1] 吴琳君[1] 秦来顺[1] 

机构地区：[1]中国计量学院材料科学与工程学院,浙江杭州310018

出　　处：《发光学报》2012年第2期150-154,共5页Chinese Journal of Luminescence

基　　金：国家自然科学基金(11075147)资助项目

摘　　要：采用溶胶-凝胶法合成了Y2SiO5∶Eu和Y2SiO5∶Tb纳米粉体,使用X射线衍射仪、扫描电镜等对粉体的结构、形貌和发光性能进行了分析,研究了Eu3+和Tb3+不同浓度掺杂硅酸钇纳米粉体的发光性能。在紫外光激发下,所获得的Y2SiO5∶Eu纳米粉体的主发射峰均位于612 nm,对应于Eu3+的5D0→7F2跃迁;Y2SiO5∶Tb纳米粉体的主发射峰均位于540 nm,对应于Tb3+的5D4→7F5跃迁。Y2SiO5∶Eu and Y2SiO5∶Tb nanopowders were prepared by sol-gel method.The structure,morphology and luminescent properties were analyzed by X-ray diffraction,scanning electron microscopy and so on.The luminescent properties of Eu3＋ and Tb3＋ doped yttrium silicate nanopowders with different concentration were investigated.The main emission peak of obtained Y2SiO5∶Eu nanopowders is at 612 nm excited by UV light,ascribed to the transition of5D0→7F2 of Eu3＋.The main emission peak of Y2SiO5∶Tb nanopowders is at 540 nm,ascribed to the transition of5D4→7F5 of Tb3＋.

关 键 词：硅酸钇 纳米粉体 发光性能 

分 类 号：O482.31[理学—固体物理]