Optimization and characterization of trap level distribution in γ-irradiated doped/codoped CaMoO4 phosphors

被引：11
作者：
Dutta, S. [1 ]
Som, S. [1 ]
Sharma, S. K. [1 ]
机构：
[1] Indian Sch Mines, Dept Appl Phys, Dhanbad 826004, Bihar, India
来源：
PHYSICA B-CONDENSED MATTER | 2013年 / 417卷
关键词：
Thermo luminescence; Phosphor; Trapping parameters; GLOW CURVES; LUMINESCENCE; AFTERGLOW; IONS; TL;
D O I：
10.1016/j.physb.2013.02.024
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Different thermoluminescence techniques were applied to optimize and characterize the trap level distribution in gamma-irradiated doped/codoped CaMoO4 phosphors. Thermoluminescence glow curves of undoped, Dy3+ doped and Dy3+/K+ codoped calcium molybdate phosphors were recorded showing one glow peak except for the undoped phosphor. The doping and codoping of the phosphor influence the peak temperature drastically. Trapping parameters such as trap depth, order of kinetics and frequency factor were calculated. The effect of heating rate on the glow curves and trapping parameters were investigated in detail. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：39 / 45
页数：7
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