Physical, optical and spectroscopic characteristics investigation for doped Dy3+borate glass matrix

Herein, series of Dy2O3 loaded alkaline earth and tellurium bearing borate-based glasses were prepared through melting and quenching process. The attenuation in physical, optical and photoluminescence attributes were analysed and discussed in details. Both the density and molar volume factors were improved with loading of Dy2O3 content owing to higher molar mass (372.98 amu) and larger atomic size of dysprosium (228 pm) of Dy2O3 over lower-molecular-mass (103.619 amu) and lower atomic size of (219 pm) strontium oxide. The optical bandgap values were decreased with Dy3+ ions concentration ascribed to the generation of non-bridging-oxygens occurred due to the substitution of Dy2O3 to SrO in the composition. The photoluminescence properties were ascertained under near ultra-violet exaction. It was identified that the SBTZBD5glasses owes strong Judd-Ofelt factors since the Dy3+ ions settled in more asymmetry sites compared to that in other concentration doped glasses. The radiative features for the 4F9/2 -> 6H13/2 hypersensitive transition were optimum compared to other transitions and those are highest for SBTZBD5 formed glass. The photoluminescence and chromaticity outcomes suggest the SBTZBD5 complex borate glass is useful for solid-state lighting, laser functionalities including backlighting in display device under UV excitations.

Automated summary

A series of alkaline earth and tellurium bearing borate-based glasses loaded with Dy2O3 were prepared and their physical, optical, and photoluminescence properties were analyzed. The addition of Dy2O3 improved the density and molar volume factors due to its higher molar mass and larger atomic size compared to SrO. The optical bandgap values decreased with increasing Dy3+ ion concentration, and the photoluminescence properties were influenced by the asymmetry sites of Dy3+ ions in the glasses. The SBTZBD5 glass showed the highest radiative features for the hypersensitive transition and is suitable for solid-state lighting and laser functionalities.