Thermoluminescence study of UV irradiated Ce doped SrS nanostructures

Thermoluminescence (TL) study and kinetic analysis of UV irradiated Ce doped SrS nanostructures have been presented. Cerium concentration has been tuned to the maximum TL intensity. Cerium (0.5 mol%) doped SrS nanocrystalline phosphor exhibits a broad TL glow curve around 371 K at a heating rate of...

Full description

Saved in:

Bibliographic Details
Published in:	Journal of alloys and compounds Vol. 486; no. 1; pp. 554 - 558
Main Authors:	Vij, Ankush, Lochab, S.P., Singh, Surender, kumar, Ravi, Singh, Nafa
Format:	Journal Article
Language:	English
Published:	Kidlington Elsevier B.V 03-11-2009 Elsevier
Subjects:	Cerium Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Glow curves Heating rate Luminescence Mathematical models Nanocomposites Nanomaterials Nanostructure Nanostructures Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of bulk materials and thin films Phosphors Physics Thermoluminescence Phosphors Luminescence Nanostructures Radiation effects Electrical conductivity Doses Doping Heat treatments Deconvolution Trapping Ultraviolet radiation Ultraviolet irradiation Optical properties Cerium additions Kinetics Activation energy Nanocrystal Thermoluminescence
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Thermoluminescence (TL) study and kinetic analysis of UV irradiated Ce doped SrS nanostructures have been presented. Cerium concentration has been tuned to the maximum TL intensity. Cerium (0.5 mol%) doped SrS nanocrystalline phosphor exhibits a broad TL glow curve around 371 K at a heating rate of 10 K/s. We noted that TL intensity increases with UV exposure time in the range 2 min–4 h and saturates between 4 h and 8 h of exposure which may be explained on the basis of track interaction model (TIM) and a high surface to volume ratio for the nanostructures. Further increase in the dose results into a decrease of TL intensity. The effect of different heating rates on the TL glow curve has also been investigated. The trapping parameters namely activation energy ( E), order of kinetics ( b) and frequency factor ( s) for SrS:Ce (0.5 mol%) have been determined using glow curve deconvolution (GCD) functions.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0925-8388 1873-4669
DOI:	10.1016/j.jallcom.2009.07.003