Glass - Back to the Future!

Presenting Author:
M Sindut

article posted 13 June 2016

Rafal Sindut

Influence of modifiers on the spectroscopic properties of Er3+, ions in TeO2-P2O5-ZnO-PbF2 glasses

M. Reben1, El Sayed Yousef2, I. Grelowska1, M. Sindut3*, B. Burtan-Gwizdala4
1 Faculty of Materials Science and Ceramics, AGH - University of Science and Technology, al. Mickiewicza 30, 30-059 Cracow
2 Department of Physics, Faculty of Sciences, King Khalid University, P. O. Box 9004, Abha, Saudi Arabia
3 Vesuvius Poland sp z oo, 32-050 Skawina, Tyniecka 12
4Institute of Physics, Cracow University of Technology, ul. Podchorazych 1, 30-084 Cracow

A series of fluorotellurite glasses based on 70TeO2 – 5MxOy – 10P2O5 – 10ZnO – 5PbF2 in mol%, where MxOy = (WO3, Nb2O5) doped with 2400ppm Er2O3 were prepared by the conventional melt quenching method. The influence of modifiers on the thermal and optical properties of glasses were analyzed. Thermal characteristics of glasses like the transition temperature Tg, the temperature for the crystallization onset Tx, the maximum crystallization temperature Tc, and the thermal stability parameter were determined by DSC method. The studies of the glasses comprised ellipsometric, spectrophotometric and photoluminescence (PL) measurements. The ellipsometric data have provided a Sellmeier-type dispersion relations of the refractive index of the investigated glasses. The optical absorption edge of the fluorotellurite glasses has been described within the Urbach approach, while the absorption and fluorescence spectra of the Er3+-doped fluorotellurite glasses have been analyzed in terms of the standard Judd–Ofelt theory along with the luminescence decay of the 4I13/24I15/2 levels of the Er3+ ion.

Keyword: fluorotellurite, thermal stability, refractive index, luminescence, Judd–Ofelt theory

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