Linear Optical Properties of Zinc Borotellurite Glass Doped with Lanthanum Oxide Nanoparticles for Optoelectronic and Photonic Application

Abstract

Enhancing the optical properties of glasses for the sake of optical application in various fields is an ongoing challenge in materials science and technology. Thus, the optical properties of zinc borotellurite glass doped with lanthanum oxide nanoparticles (La2O3 NPs) with the chemical composition of {[(TeO2)0.7(B2O3)0.3]0.7(ZnO)0.3}1−x (La2O3 NPs)x, where x = 0.01, 0.02, 0.03, 0.04, and 0.05 molar fraction, have been investigated. Characterization techniques such as x-ray diffraction, Fourier Transform Infrared Spectroscopy, and Ultraviolet-Visible Spectroscopy are employed to yield the structural properties and optical parameter of the glass. The amorphous nature of the fabricated glasses is confirmed with the presence of a broad hump via XRD diffraction pattern. The decreasing amount of high polarizable nonbridging oxygen as the concentration of La2O3 NPs increases has contributed to the increasing trend of energy band gap in the range of 2.70 to 3.52 eV and decreasing value of refractive index between 2.34 and 2.48. The fabricated glasses that have a higher refractive index than the widely used fiber material, pure silica glass, indicate that zinc borotellurite glass doped with lanthanum nanoparticles is a promising material to be applied as optical fibers.

Multifunctional praseodymium-doped composite silica glasses for UV shielding and photonic applications

“…The Urbach energies, E u , increase with increasing concentrations of Pr 3+ , which were calculated from the inverse of the slope of Urbach's plot. The Urbach energy, a measure of structural disorders, could be attributed to the short-range silicate groups tending to form long-range glass networks with NBO linking Pr-O, thereby transforming weaker bonds into structural defects [46]. However, the decrease in E u at 1.5 mol% of Pr 3+ signifies less disorder due to structural defects [47].…”

Effects of Dy2O3 doping on physical and mechanical characteristics of B2O3-TeO2-BaO glass

“…As shown in Figure 3, the glass density values gradually rose from 4.535 to 4.772 gm/cm 3 as the concentration of Dy2O3 was progressively increased. Replacing the lighter B2O3 (69.62 amu) with the heavier Dy2O3 (372.9 a.m.u) could be a possible reason for the observed increase in density [15]. Moreover, the presence of Dy2O3 in the glass systems can affect the density increment since it modifies the glass network.…”

Structural and spectroscopic correlation in barium-boro-tellurite glass hosts: effects of Dy2O3 doping

“…The appearance of a broad hump indicated their amorphous character without any long-range periodic lattice arrangements because disordered samples are lack of sharp lines and peaks. Thus, the obtained samples were glasses because the atoms do not have any uniform spacing thereby unable to produce sharp diffraction peaks in the XRD profiles [12] Fig. 1.…”