Photoluminescence, thermoluminescence glow curve and emission characteristics of Y2O3:Er3+ nanophosphor.Nanocrystalline Er3+ doped Y2O3crystals were prepared by a sol gel technique.  Thermoluminescence (TL) studies of γ-irradiated Y2O3:Er3+ showed a prominent TL glow peak maximum at 383K along with a less intense shoulder peak at ~425K and a weak glow at 598K. 
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