Glow Curve Deconvolution Analysis Of Calcium Magnesium Silicate Nanophosphor

Abstract

Thermoluminescence(TL) is a luminescence phenomenon of an insulator or semiconductor which can be observed when the solid is thermally stimulated. The glow curve deconvolution(GCD) is mainly used to find the individual glow peaks of a composite TL Glow curve and further to evaluate the trapping parameters. The purpose of this research was to analyze glowcurve of calcium magnesium silicate nanophosphor and deconvolute the curve in to its individual peaks using Origin software and this was based on the concept of one trap-one recombination center(OTOR) model. Four peaks were deconvoluted and we determined activation energy(E) and frequency factor(s) for each peak using peak shape method. With the determined values of activation energy(E) and frequency factor(s) the graph of concentration of electron(n(T)) and TL intensity versus temperature was plotted inMathematica. And we observed that the value of maximum temperature experimentally and calculated were close to each other for these peaks. Also, shift of TL intensity of these peaks were observed.