Intrinsic conversion efficiency of X-rays to light in Gd2O2S:Tb3+ powder phosphors

被引：36

作者：

Morlotti, R

Nikl, M

Piazza, M

Boragno, C

机构：

[1] INST PHYS,PRAGUE 16200 6,CZECH REPUBLIC

[2] UNIV GENOA,INST PHYS,GENOA,ITALY

来源：

JOURNAL OF LUMINESCENCE | 1997年 / 72-4卷

关键词：

X-ray phosphor; luminescence; decay times; intrinsic conversion efficiency; Gd2O2S:Tb3+;

D O I：

10.1016/S0022-2313(96)00330-4

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The intrinsic conversion efficiency (ICE) of X-rays to light of Gd2O2S:Tb3+ powder phosphor has been determined according to known methods. The values vary between 0.09 and 0.17 depending on the processing conditions and Tb content. An inverse correlation between ICE values and the decay times of the UV excited green luminescence has been observed. A model of the metastable and nonradiative centres competing with Tb3+ ions, decreasing the energy efficiency transfer and the luminescence yield, is provided.

引用

页码：772 / 774

页数：3

共 6 条

[1] TRAPPING PARAMETERS AND KINETICS IN GD2O2S-TB PHOSPHOR [J].