Influence of glass formers and glass modifiers on spectral properties and CIE coordinates of Dy3+ ions in lead-free borate glasses

Spectral properties of lead-free glasses doped with Dy3+ ions in function of glass formers and glass mod-ifiers were studied. The glass systems in a function of concentration GeO2 and CaO/SrO/BaO which was partially or totally replaced by CaF2/SrF2/BaF2 were synthesized. The visible luminescence spectra for obtained glasses were registered and value of parameters such as ratio of yellow-to-blue luminescence and the Commission Internationale de I'Eclairage (CIE) chromaticity coordinates (x, y) were analyzed in detail. The Y/B increase from 2.97 to 3.8 in systems with increasing of concentration glass former (GeO2), whereas ratio Y/B slightly decreases when the of content fluoride glass modifiers increases. The obtained results confirm that impact on visible luminescence of lead-free borate glasses doped with Dy3+ ions is greater for glass former than glass modifier. Moreover, studied systems can be used for opto-electronic as yellowish emitters. (C) 2021 Elsevier B.V. All rights reserved.

Automated summary

The spectral properties of lead-free glasses doped with Dy3+ ions were investigated with respect to glass formers and glass modifiers. It was found that the impact on visible luminescence is greater from glass formers than glass modifiers. The obtained glasses can potentially be used for opto-electronic applications as yellowish emitters.