Structural, optical and morphological study on Gd2O3:Eu3+

Eu³⁺ doped Gd₂O₃ phosphors were synthesized successfully by sol-gel method. The growth of particle was inhibited with the addition of surfactant PEG. The formation of cubic phase Gd₂O₃ was confirmed from XRD pattern. The reflectance spectra exhibited the absorption peaks corresponding to the dopant and host ions. The excitation spectra showed a broad peak at 248 nm corresponding to ligand to metal charge transfer. A sharp red emission peak at 611 nm indicated the presence of more number of Eu³⁺ ions in non-inversion symmetry site. The SEM micrograph showed the growth of agglomerated and non-uniform shaped particles with the addition of PEG.