Thermoluminescence behavior of Y2Sio5 : Ce3+ phosphor in view of second order kinetics

Abstract

This work covers Thermoluminescence(TL) behavior of Y2SiO5 : Ce3+ phosphor in second order kinetic. Theoretically show that T L intensity verses temperature with important T L kinetic parameters . To investigate the thermoluminescence behavior Y2SiO5 : Ce3+ phosphor in second order kinetics properties by using one trap and one recombination model (OTOR). According to prefer Y2SiO5 : Ce3+ phosphor in second order equation (Garlick Gibson). We have get different characteristics of glow peak curves, the values of kinetics parameters are changed then as follows.Firstly the activation energy changes the glow curve can be goes from minimum to the maximum of temperature, because of when we used the large activation energy to use more charges moves from valance band to conduction band,if lower activation it has large glow curves but the larger activation the small glow peak curves.Next the T L intensity peak shifts slightly to higher temperature a glow curve peak maximum with change (increase) heating rate. These glow curves shift .Thidly a glow curve peak maximum with change in concentration of electron the glow curves verses to the concentration of electron increases,and the height of the thermoluminescence peak changes to the high temperature and intensity of thermoluminescence also increases these glow curves unique from experimental glow curves .Finally a glow curve peak maximum with increases in frequency factor and,LIST OF FIGURES increases the frequency to need small amount of energy needed trigger the charge therefore glow curve shift to from maximum to lower temperature ,and intensity of thermoluminescence also decreases. Therefore studying luminescence properties for possible applications such as long lasting phosphorescence and display devices