Thermoluminescence characteristics of CaS doped with rare earth ions Ce and Sm

被引：3

作者：

Sharma, Geeta ^{[1
]}

Lochab, S. P. ^{[2
]}

Singh, Nafa ^{[1
]}

机构：

[1] Kurukshetra Univ, Dept Phys, Kurukshetra 136119, Haryana, India

[2] Inter Univ Accelerator Ctr, New Delhi 110067, India

来源：

CURRENT APPLIED PHYSICS | 2011年 / 11卷 / 03期

关键词：

Thermoluminescence; Nanophosphors; Luminescence; PHOTOLUMINESCENCE CHARACTERISTICS; TL RESPONSE; KINETICS; ORDER; LUMINESCENCE; PARAMETERS; PHOSPHOR; MODEL; BI;

D O I：

10.1016/j.cap.2010.12.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

CaS:Ce, Sm nanophosphors have been synthesized using solid state diffusion method with an aim to study the thermoluminescence characteristics of CaS:Ce,Sm system with varying concentrations of cerium and smarium in CaS host. The structural characterization of nanophosphors was done using XRD and TEM spectroscopy. We have investigated the effect of different concentrations of cerium and smarium in CaS host on the TL intensity. TL intensity is found to be maximum for CaS:Ce0.4Sm0.6. The effect of different heating rates on the TL glow curves recorded after a UV exposure of 560 rnJ/cm(2) has been investigated. Peak of the TL glow curve shifts toward higher temperature as the heating rate increases and the TL intensity decreases. Effect of different doses of UV on the TL glow curve of CaS:Ce0.4Sm0.6 at a heating rate of 10 K/s has been studied and all the glow curves show a single peak around 440 K. With increasing dose the TL intensity increases linearly upto 560 mJ/cm(2) of the dose and afterward saturation region is obtained upto 13.5 J/cm(2). Beyond it a fall is recorded upto 80 J/cm(2) of the exposure. Analysis of the TL glow curve and calculation of the trapping parameters has been done with the help of Glow curve deconvolution software. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：921 / 925

页数：5

共 29 条

[1] Nanocomposite materials for optical applications [J].