Spectroscopic properties and Judd-Ofelt analysis of Sm3+ ions in barium sodium borate glasses

Abstract

Barium sodium borate glasses doped with various concentrations of samarium oxide were prepared by melt-quenching technique. The density, molar volume and refractive index of the glass samples were carried out. The spectroscopic properties were studied by investigating absorption, excitation, and emission spectra of the glass samples. The absorption spectra were investigated in the UV-Vis-NIR region from 300 to 1800 nm. The strongest emission occurs when exciting the glass samples with 400 nm excitation wavelength (assigned as 6H5/2→6P3/2 transition). The emission spectra of Sm3+-doped glasses centered at 562 nm (4G5/2→6H5/2), 600 nm (4G5/2→6H7/2), 646 nm (4G5/2→6H9/2) and 706 nm (4G5/2→6H11/2) had been observed with 400 nm excitation wavelength. The results showed that the glass sample with 0.50 mol% of Sm2O3 gave the highest intensity of all samples. From CIE 1931 chromaticity diagram, the emission light of the glass samples was shown in orange region. Judd-Ofelt theory had been employed to obtain J-O parameters (Ω2, Ω4 and Ω6), oscillator strength (f), radiative transition possibility (AR), stimulated emission cross section (σ) and branching ratio (BR) of the glass samples. The parameters obtained from Judd-Ofelt analysis showed that the 0.50 mol% of Sm2O3 doped barium sodium borate glass from this work performed high potential for using as orange emitting material applications.