Preparation and characterization of glasses based on GeS₂-Sb₂S₃-CsX (X=Cl,Br,I) systems

Abstract

Halides have been incorporated into chalcogenide glasses for improving properties of these glasses. Here, we report a systematic research on properties of glasses based on GeS₂-Sb₂S₃-CsX (X=Cl, Br, I), in which cesium halides are substituted for GeS₂ of 60GeS₂-40SbS_3/2 glasses. Glasses were obtained until 25 mol% substitution of CsCl, and 30 mol% substitution of CsI for GeS₂. Glass transition temperatures of the GeS₂-Sb₂S₃-CsX (X=Cl, I) glasses lowered monotonically with increasing CsX content. Densities increased monotonically with increasing CsX content. We also measured variations in optical properties such as absorption edges and refractive indices.