Thermoluminescence study of Eu3+ doped Na2Sr2Al2PO4Cl9 phosphor via doping of singly, doubly and triply ionized ions

We report here thermoluminescence properties of Eu3+ doped Na2Sr2Al2PO4Cl9 phosphor via doping of singly, doubly and triply ionized ions on the basis of PL studies done for this sample. The proposed sample was synthesized using solid state reaction method. Vibrational feature of this phosphor was confirmed by FT-IR spectra. This sample shows high degrees of crystallinity. All subseries are irradiated with Co-60-gamma (gamma) source and thermoluminescence studies were done for all subseries formed by doping of singly, doubly and triply ionized ions. The result shows that all the series give highest TL intensity at low dose rate. On doping of triply doped ionized ion (Y3+), TL intensity is enhanced to some extent. Deconvolution of broad TL glow data formed for some sample were done by using TLAnal computerized software. Thermoluminescence studies of these Eu3+ doped SrYAl3O7 phosphor were done by Nucleonix TL 10091 thermoluminescence (TL) reader. Trapping parameters of each phosphor such as activation energy (E), order of kinetics (b) and frequency factor (s) were calculated by Chen's peak shape method, Initial rise method and Ilich method. Thus, the singly, doubly and triply ionized ions co-doped with Na2Sr2Al2PO4Cl9: Eu3+ phosphor may be used in high dose thermoluminescence dosimetric application in various fields.