EXAFS studies of luminescence centres in Eu3+ doped nanoscale phosphors

被引：54

作者：

Tao, Y

Zhao, GW

Ju, X

Shao, XG

Zhang, WP

Xia, SD

机构：

[1] CHINESE ACAD SCI, INST HIGH ENERGY PHYS, BEIJING 100039, PEOPLES R CHINA

[2] UNIV SCI & TECHNOL CHINA, DEPT PHYS, HEFEI 230026, PEOPLES R CHINA

来源：

MATERIALS LETTERS | 1996年 / 28卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

EXAFS; nanoscale materials; rare earth ions; europium-doped luminescent materials; emission intensity; synthesis; sol-gel; configurational-coordinate model;

D O I：

10.1016/0167-577X(96)00041-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Extended X-ray absorption spectroscopy (EXAFS) was used to determine the local structure of luminescence centres in Eu3+ doped, Eu-Bi doped, Eu-Tb doped nanoscale yttrium oxide as well as Eu3+ doped nanoscale yttrium Silicate. It was shown that the Eu-O bond distance of the first coordination shell has an important effect on emission intensity, and the doping of Bi and Tb changes the Eu ion coordination environment, which results in the change of emission intensity. This result can be explained by the configurational-coordinate model.

引用

页码：137 / 140

页数：4

共 9 条

[1]

Blasse G., 1970, Philips Technical Review, V31, P314

[2] FLUORESCENCE AND STIMULATED EMISSION FROM TRIVALENT EUROPIUM IN YTTRIUM OXIDE [J].