Correlative study of optical, electrical and thermal transport properties of Se100-xInx chalcogenide glasses

The measurements of optical energy band gap, dc electrical conductivity and thermal conductivity of Se100-xInx (X= 0, 5, 10, 15 and 20) chalcogenide glasses have been carried out at room temperature. The measured values of electrical conductivity and thermal conductivity are used to determine the Wiedemann-Franz ratio of the said materials in the composition range of variation. The variation of electrical and thermal conductivity have been found maximum at 10 at.wt.% of Indium (In). The variation of optical energy band gap and Wiedemann-Franz ratio have found minimum at 10 at.wt.% of In. The correlative results of optical energy band gap and dc electrical conductivity at various composition range of In can be consider as an experimental model for Se100-xInx for chalcogenide glasses. These behaviors of materials could be understood on the basis of bond formation of Se and In at different compositions.