Experimental and theoretical approach on the physical, structural and optical properties of ZrO2 - Na2O - B2O3 glasses doped with Dy2O3

Abstract

The series of ZrO2 - Na2O - B2O3 glasses doped with Dy2O3 were synthesized by the traditional melt quench technique. The non-crystalline nature affirmed by X-Ray diffraction patterns and all the basic parameters was evaluated. The Fourier Transform Infrared assessment was done to contemplate the numerous functional groups. From the Tauc's plot, Urbach energy and the optical band gaps were calculated. The theoretical value of the refractive index, molar refractivity, molar electronic polarizability, oxide ion polarizability, optical dielectric constant, electronegativity, optical basicity found to increase. Whereas, the metallization criterion, interaction parameter was decreased. From the luminescence studies, a glass sample with 1.0 mol% of Dy3+ ion indicated maximum intensity and very nearer to the perfect white light in the CIE colour coordinates diagram. The acquired correlated colour temperature (CCT) values for the present glass system revealed great ability to be utilized for applications in w-LEDs and solid-state lasers.