Study of the optical and spectral properties of Phosphor Tellurite Semiconducting Oxide Glasses
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Abstract
A systematic series of binary Phosphor tellurite glasses in the form [(90-X%)TeO2-(X%)V2O5] in mol%, where X = (10,20,25,30,35) have been successfully prepared in standard method (melt quenching), The effect of adding (V2O5) have been discussed. The X-Ray diffraction spectrum shows that the glass composite had no sharp peaks, The absence of abroad hump at (2θ=25-30o) indicates the presence of (L.R.O) long-range structural was disorder. The glass network structure was discussed through IR and Raman spectroscope and that showed the glass network is built of (TeO3 and TeO4) units. From the UV-visible spectrum, the edge of absorption the optical energy gap (Eopt) Urbach energy (Eo), and refractive index (n), have been determined. The results show that (Eopt) decreased with the increase of (V2O5) concentration, and Urbach energy (Eo) decreased with the increase of (V2O5) content, the refractive index (n) increased with the increase of (V2O5) concentration. The thermal parameters such as transition temperature (Tg), thermal stability (S), and thermodynamic fragility (F) are calculated by differential scanning calorimetry (DSC). Structural analysis of the glass system was identified by scanning electron microscopy (SEM).
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