Optical properties of zinc borotellurite glass doped with trivalent dysprosium ion

Abstract

The zinc borotellurite doped with dysprosium oxide glass samples with chemical formula {[(TeO2)0.7(B2O3)0.3]0.7(ZnO)0.3}1−x(Dy2O3)x (where x=0.01, 0.02, 0.03, 0.04 and 0.05 M fraction) were prepared by using conventional melt quenching technique. The structural and optical properties of the proposed glass systems were characterized by using Xray diffraction (XRD) spectroscopy, Fourier Transform Infrared (FTIR) spectroscopy, and UV-VIS spectroscopy. The amorphous nature of the glass systems is confirmed by using XRD technique. The infrared spectra of the glass systems indicate three obvious absorption bands which are assigned to BO 3 and TeO 4 vibrational groups. Based on the absorption spectra obtained, the direct and indirect optical band gaps, as well as the Urbach energy were calculated. It is observed that both the direct and indirect optical band gaps increase with the concentration of Dy 3+ ions. On the other hand, the Urbach energy is observed to decrease as the concentration of Dy 3+ ions increases.

Sinter‐Crystallization and Optical Characterization of Dy3+: ZnO‐B2O3‐RHA Glass‐Ceramics

“…The precursor glass of Dy 3+ doped WGCs, Dy 3+ :WGC0, obtained in the form of glass frits acquired from melt-quench at 1350°C in the water bath prepared at room temperature, is presented in Figure 1. It is observed that the glass frits appeared in light yellow with the same concentration of Dy 3+ dopant reported by Hazlin et al [13] The glass that appeared transparent is believed due to the low intrinsic scattering of light by low absorption or scattering of light due to no grain boundaries in the glass sample. [14] The relationship between density and sintering temperature of the glass and glass-ceramics have been depicted in Figure 2.…”

Comparison Study of Elastic, Physical and Structural Properties for Strontium Oxide and Manganese Oxide in Borotellurite Glasses for High Strength Glass Application

“…In this work, the absorption band positioned at 1215 -1218 cm -1 was assigned to the trigonal B-O bond stretching vibration of BO 3 units from boroxyl groups. The absorption band at 1350 -1364 cm -1 was assigned to the stretching vibration of the B-O of trigonal (BO 3 ) units [13]. Meanwhile, the manganese oxide and strontium dioxide could not be detected in the FTIR spectra due to the small amount of dopants' concentration.…”