Abstract
Glasses with compositions [(50-X) TeO2 − 20 B2O3 − 30 ZnO − x Dy2O3] where X = 0, 1, 2, 3, 4 and 5 mol% were synthesized by melt quenching method. X-ray diffraction (XRD) measurements confirmed the amorphous nature of the as-prepared glasses. UV–Vis absorption and PL spectroscopy studied the optical properties of the glass samples. High absorption of glass samples observed up to 3 mol% of Dy2O3, and then increasing the concentration of Dy2O3 reduces the absorption. The increasing concentration of Dy2O3 formed the glass sample containing 4 and 5 mol% Dy2O3 acts as a UV band-cutting filter. CIE achromatic color coordinates and CCT results for visible transitions confirm the ability of the glass samples under study as potential materials for white light-emitting diodes and laser application. The studies suggest that these materials are suitable for optoelectronic application.
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