Citrate sol-gel synthesis and luminescent properties of Cr3+-activated strontium gallate phosphor

Abstract

In the present work, we report the structural and luminescent properties of Cr3+ doped strontium gallate phosphor. The sample was prepared by citric acid assisted sol-gel synthesis method followed by high temperature annealing. The phase of the prepared phosphor has been identified from the XRD pattern. For morphological properties, FESEM image have been taken. The d-d transitions of Cr3+ ion were observed from photoluminescence excitation and emission spectra. Lifetime was calculated from the decay curve. The long lasting phosphorescence was observed from the afterglow decay curve.In the present work, we report the structural and luminescent properties of Cr3+ doped strontium gallate phosphor. The sample was prepared by citric acid assisted sol-gel synthesis method followed by high temperature annealing. The phase of the prepared phosphor has been identified from the XRD pattern. For morphological properties, FESEM image have been taken. The d-d transitions of Cr3+ ion were observed from photoluminescence excitation and emission spectra. Lifetime was calculated from the decay curve. The long lasting phosphorescence was observed from the afterglow decay curve.