Publications

Abstract : Synthesis of Eu3+ doped Y2O3 nanophosphors via modified sonochemical method was presented. Morphologies of the prepared products were analyzed with respect to the influential parameters during the preparation time. The photoluminescence (PL) emission spectra exhibits several peaks at ∼537nm, 598nm, 613nm and 662nm attributed to 5D0→7FJ (J=0, 1–3) transitions of Eu3+ ions in the host lattice. The types of energy transfer between the Eu3+ ions were responsible for concentration quenching confirms the electric dipole–quadrupole interaction among the ions. The Judd-Ofelt intensity parameters and other radiative properties were estimated by using PL emission spectra. The photometric characteristics of the prepared samples indicate that the color co-ordinates were tune towards pure red emission with color purity of ∼88%. The results signified that the prepared Y2O3:Eu3+ was a potential amber phosphor for solid state and LED’s applications.