Thermal analysis and annealing temperature dependence of electrical properties in Sn10Sb20Se70 glassy semiconductor
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The melt-quenched Sn10Sb20Se70 sample in the bulk form was used to prepare films on well-cleaned glass substrates by thermal evaporation method. The activation energy for glass transition (apparent) and crystallization has been analyzed by using the Kissinger formulation. The X-ray diffraction study shows the crystallization of Sb2Se3 phase in the major proportion as compared to the SnSe2 phase. The SEM images film of the show the appearance of spherical globules upon annealing below the glass transition temperature. The effect of annealing temperature on the electrical and optical properties has been studied. A linear fit between ΔE and Eo is observed, indicating the validity of Meyer–Neldel rule with the change in the annealing temperature.
KeywordsGlass Transition Temperature Chalcogenide Glass SnSe2 Annealed Film Pristine Sample
The authors wish to thank Mr. Jagtar Singh, Sophisticated Analytical Instrumentation Facility (SAIF), Punjab University, Chandigarh, and Mr. Jagdish Singh, Scientific Officer, Institute Instrumentation Center, IIT, Roorkee, for their timely help in the XRD and DSC studies, respectively.