Effect of B₂O₃ on Optical Properties of Dy³⁺ Ion-Doped Zinc–Aluminum–Sodium–Phosphate Glasses

Different concentrations of B₂O₃ in zinc–aluminum–sodium–phosphate (ZANP) glasses were synthesized by the conventional melt-quenching method and analyzed using X-ray diffraction (XRD), optical absorption, excitation, visible luminescence, decay lifetime, and chromaticity methods. The amorphous nature of the glasses was confirmed by the absence of sharp diffraction peaks in the XRD profile. In the visible emission spectra blue, yellow, and red bands were observed and the intensity of the yellow band was superior. Furthermore, the samples show a luminescence quenching beyond 20 mol.% of B₂O₃ concentration. The decay lifetime of ⁴F_9/2 of Dy³⁺ ions was found to be maximal in ZANP Dy0.5:20B₂O₃ glass.