Study on physical optical and luminescence properties of Gd3+ /Dy3+ doped borophosphate glasses

Abstract

K2O- Al2O3-Gd2O3-B2O3-P2O5 glass samples doped with Dy2O3 were synthesized by the melt quench technique. These glasses are subjected to characterization techniques viz., physical, optical, absorption, and luminescence properties. It is observed that the density and molar volume of glasses increases with the addition of Dy2O3 concentration. The emission spectra of glasses exhibit strong two peaks corresponding to electronic transitions i.e., 4F9/2􀄺6H13/2 at 574 nm and 4F9/2􀄺6H15/2 at 482 nm respectively. Ultraviolet excitation with 275 nm generated a strong white emission. The emission intensity enriches with the gradual increase in the concentration of Dy2O3 up to 1.0 mol%. the CIE 1931 analysis showed that the emitting light was white.