| Popis: |
CaTiO3 phosphors doped with Eu3+ and codoped with Mg2+ were prepared by Solid State Reaction method. The powders were characterized by X-ray diffraction, SEM with EDS, Raman scattering, and photoluminescence spectroscopy. The Crystalline phase and vibrational modes of the phosphors were studied using XRD pattern and Raman Spectrum respectively. The morphological studies of the phosphor samples were carried out using SEM analysis. From PL spectra we have observed two prominent red emission peaks around at 595 nm (5D0→7F1), 619 nm (5D0→7F2) with the excitation of 399nm for Eu3+ doped CaTiO3 powders. The PL intensity of CaTiO3:Eu3+ phosphor is enhanced significantly on codoping with Mg2+. The observed enhanced emissions are due to energy transfer from Mg2+ to Eu3+, which is due to radiative recombination. Eu3+ doped phosphors are well known to be promising materials for electroluminescent devices, optical amplifiers, and lasers. |
