(Y,Gd)Al_3(BO_3)_4:Tb的真空紫外光谱特性  

VUV Spectral Properties of (Y,Gd)Al_3(BO_3)_4:Tb

作　　者：刘端阳[1] 何大伟[1] 康凯[1] 刘春棠[1] 李少霞[1] 沈芳[1] 陶冶[2] 

机构地区：[1]北京交通大学光电子技术研究所,信息存储和显示材料实验室,北京100044 [2]中国科学院高能物理研究所同步辐射实验室,北京100039

出　　处：《光谱学与光谱分析》2005年第7期1034-1037,共4页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金资助课题(59982001);北京市自然科学基金资助课题(2052019)

摘　　要：(Y,Gd)Al3(BO3)4属于三角晶系, 具有R32的空间群, 掺入Ce3+, Tb3+杂质后, 其晶格结构没有变化. (Y,Gd)Al3(BO3)4:Tb随着Gd3+摩尔浓度增大, 基质吸收带红移. Gd3+和Tb3+之间存在着很有效的能量传递. Gd3+摩尔浓度在一定范围内(0～0.75 mol)增大时, 样品在120～300 nm光谱范围内的激发强度均是增强的; 但是, Gd3+浓度过高造成Gd3+的发射增强, GdAl3(BO3)4:Tb在120～240 nm光谱范围内激发强度很明显下降. (Y,Gd)Al3(BO3)4:Ce, Tb在真空紫外激发下, 发现Tb3+的发光明显的被Ce3+猝灭.（Y, Gd）Al3（BO3）4 doped with Ce and Tb were prepared by solid state reaction. The structure, VUV excitation properties, and luminescence properties under VUV excitation were studied. （Y,Gd）Al3（BO3）4 belongs to trigonal crystal system with the space group of R32, and the crystal structure does not change as Tb^3＋ and Ce^3＋ ions are doped to the crystal lattice. The host absorption band of （Y,Gd）Al3（BO3）4：Tb moves to longer wavelength as Gd^3＋ mol concentration increases. The energy transfer between Gels＋and Tb^3＋ is very effective, and the samples with high Gd^3＋ mol concentrations have high radiant efficiencies. It was found that the luminescence of Tb^3＋ is quenched by Ce^3＋ in （Y, Gd）Al3（BO3）4 ：Ce, Tb under VUV excitation.

关 键 词：(Y Gd)Al3(BO3)4 PDP(等离子平板显示器) VUV(真空紫外) 猝灭 

分 类 号：TQ174[化学工程—陶瓷工业] O65[化学工程—硅酸盐工业]