Effect of Different Excitations on Photoluminescence Behaviour of the Tb3+ Gd2O3 Phosphor

摘要: Gd2O3: Tb3+ phosphor was prepared by combustion synthesis method using glycerin as a fuel and annealed it for further studies at 900⁰C. The XRD result confirms the formation of monoclinic phosphor. The photoluminescence behavior was determined by recording the excitation and emission spectra of the prepared phosphor. The excitation spectra have intense peaks at 229, 277 and 314 nm. Emission spectra were recorded under different excitation. The most intense peak was found in the green region. All the spectra have emission peaks at the same positions only they differ in their intensities. The maximum intensity was found under 277 nm excitation.