Development of Reddish-Orange Color Emission Material from Barium Gadolinium Borate Glasses Doped with Eu2O3.

The Eu³⁺ ions-doped barium gadolinium borate glasses were synthesized by the melt-quenching technique with various Eu₂O₃ concentrations to investigate the physical, optical, and luminescence properties. The results showed that the density tended to be increased along with increased Eu₂O₃ concentration, while the molar volume decreased along with increased Eu₂O₃ concentration. The absorption spectra showed the characteristic absorption peaks in the visible and near-infrared regions. The emission spectra of the glasses were illustrated the highest emission intensity at 613 nm wavelength, which corresponds to the Eu³⁺ transition, ⁵D₀→⁷F₂. The CIE 1931 chromaticity investigation showed that Eu³⁺ doped glasses emitted the light with a reddish-orange color. [ABSTRACT FROM AUTHOR]