Synthesis, XRD, UV-Vis spectra and photoluminescent properties of TeO2-based glasses doped with Yb3+ and Bi3+

This research presents the synthesis, optical and physical properties of five new glass samples based on tellurium dioxide with the following chemical composition 75TeO(2) - 5Na(2)O - (x-20) BaO - xYbO(1.5), where x = 2, 5, 10, 15 mol%, the fifth sample contains the following chemical composition: 65TeO(2) - 5Na(2)O - 15BaO - 5YbO(1.5) - 10BiO(1.5) mol%. The samples were coded as follows TNB-Y02; TNB-Y05; TNBY-10; TNB-Y15; TNBY-Bi10, respectively. We initially studied the optical and physical changes on the studied glass when the Ba2+ atoms were replaced by Yb3+ atoms and Te2+ atoms with Bi3+. We found that the presence of bismuth in the TNBY-Bi10 sample has a positive impact in increasing the energy of the bang gap and the density of the glass sample. On the other hand, all the studied samples TNBY except the TNBY-Bi10 sample have emission band with a wavelength of 1025 nm at room temperature. Therefore, such glass samples have a potential use in transparent electrodes in solar cells as well as in surface acoustic wave devices.

Automated summary

This research presents the synthesis and properties of five new glass samples based on tellurium dioxide. The study found that the presence of bismuth in one of the samples has a positive impact on increasing the energy of the band gap and the density of the glass sample. Additionally, all the samples, except one, have an emission band at room temperature.