摘要
采用固相反应的方法；经二次灼烧合成了掺Ｃｅ（３＋）、Ｔｂ（３＋）的Ｃａ３Ｙ２（ＢＯ３）４和Ｓｒ３Ｙ２（ＢＯ３）４磷光体；分析了合成过程中铈的还原情况．用Ｘ－射线衍射分析确定了它们的结构均为正交晶系，空间群Ｐ２１ｃｎ测定了Ｃｅ（３＋）和Ｔｂ（３＋）在两种基质中的光谱，得到Ｃｅ（３＋）波长位移的某些规律，观察到Ｃｅ（３＋）对Ｔｂ（３＋）的敏化作用．
By solid state reaction method, with double ignitions Ca3Y2-x-yCexTby(BO3)4 and Sr3Y2-x-yCexTby(BO3)4 phosphors were prepared. The reduction state of Ce during ignition has been discussed. With XRD their crystal structure have been determined,both of them belong to ortherhombic syngony,space group P21cn. The spectra of Ce3+and Tb3+ in these two matrixes have been measured. Some trend regarding the peak wavelength shift of Ce3+ has been obtained with increasing concentration of Ce3+. Sensitization of Tb3+ by Ce3+ has been observed.
出处
《发光学报》
EI
CAS
CSCD
北大核心
1994年第2期94-101,共8页
Chinese Journal of Luminescence
基金
国家自然科学基金
长春物理所激发态开放实验室资助
关键词
发光体
发光特性
铈离子
铽离子
M_3Y_2 (BO_3)_4 synthesis, luminescence of Ce￣(3+), luminescence of Tb￣(3+),Ce-Tb sensitization
