Abstract
Er3+ doped Gd2O3 phosphors were prepared by using solution combustion synthesis method. The structural characterization and the luminescence behaviour of the prepared phosphors were determined and compared. Average crystal size for the phosphors yielded was in nanometre range from 6 to 48 nm, which was calculated by using XRD and confirmed by TEM technique. The compositional analysis was done by FTIR. Qualitative information regarding the elemental composition of powder sample was measured using EDX spectroscopy. EDX and FT-IR spectra confirm presence of Er3+ in the Gd2O3:Er3+ phosphors. For thermoluminescence (TL) studies the TL glow curves were recorded under two different excitations i.e. UV and gamma exposures. All the factors like dopant concentration, heating rate, exposure dose etc. were optimized for both the excitations. Various Kinetic parameters were calculated for TL glow curve recorded for all the optimized conditions. Computerized glow curve deconvolution analysis was carried out for optimized TL glow curve. Different kinetic parameters were also calculated for all the deconvoluted peaks.
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