Impact of Dy2O3 Substitution on the Physical, Structural and Optical Properties of Lithium-Aluminium-Borate Glass System

In this study, a series of Li2O-Al2O3-B2O3 glasses doped with various concentrations of Dy2O3 (where x = 0.0, 0.2, 0.4, 0.6, 0.8, and 1.0 mol%) were prepared by using a conventional melt-quenching technique. The structural, physical and optical properties of the glasses were examined by utilising a variety of techniques instance, X-ray diffraction (XRD), UV-Vis-NIR spectrometer, Fourier transform infrared (FTIR) and photoluminescence (PL). The XRD spectra demonstrate the amorphous phase of all glasses. Furthermore, the UV-vis-NIR spectrometers have registered optical absorption spectra a numbers of peaks which exist at 1703, 1271, 1095, 902, 841, 802, 669, 458, 393 and 352 nm congruous to the transitions from the ground of state (H-6(15/2)) to different excited states, H-6(11/2), F-6(11/2) + H-6(9/2), F-6(9/2) + H-6(7/2), F-6(7/2), F-6(5/2), F-6(3/2), F-4(9/2), I-4(15/2), F-4(7/2) and P-6(7/2), respectively. The spectra of emission exhibit two strong emanation bands at 481 nm and 575 nm in the visible region, which correspond to the transitions F-4(9/2) -> H-6(15/2) and F-4(9/2) -> H-6(13/2). All prepared glass samples doped with Dy2O3 show an increase in the emission intensity with an increase in the concentration of Dy3+. Based on the obtained results, the aforementioned glass samples may have possible applications, such as optical sensor and laser applications.