Dy³⁺-Doped Li₂O: BaO: Gd₂O₃: SiO₂ Glasses for Luminescence Applications

The Dy³⁺ ions-doped 25Li₂O:20BaO:5Gd₂O₃:(50-x) SiO₂ glasses were synthesized by the melt quenching technique with various Dy₂O₃ concentrations to investigate physical, optical and luminescence properties. The results showed that the density and the molar volume trend to be increased along with increasing Dy³⁺ concentration. The absorption spectra showed characteristic absorption peaks in the visible and near infrared regions. The emission spectra of the glasses illustrated the highest emission intensity at 574 nm wavelength, which corresponding to Dy³⁺ transition of ⁴F_9/2→⁶H_13/2 level. The CIE 1931 chromaticity investigation showed that Dy³⁺-doped glasses emitted light with white color. J–O analysis indicates that the glass sample performs a good potential for using as white light applications.