LAUSR

Abstract Bulk chalcogenide (GeS2)100-x(Sb2S3)x (x = 15, 30, 45, 60) glassy alloy have been synthesized using cost effective and conventional melt quench technique. Thin films of synthesized glassy materials have been prepared with the help of thermal evaporation technique. XRD, SEM and DSC have been employed to study structural and thermal properties of the prepared alloys. All the prepared thin films show high transparency throughout the visible spectral range. The optical band gap calculated from UV–vis data varies from 2.40 eV to 2.34 eV due to density of defect states. The optical reflectance spectra along with refractive index obtained from FTIR data of the prepared samples have also been discussed. As refractive index of the chalcogenide glasses is most important parameters for optoelectronic application so our prepared materials could be utilized for sensing applications from visible to mid infrared region.