A new series of chalcogenide glasses in the Cu2S-Sb2S3 system was prepared by a conventional melt-quenching method. The glassy nature of prepared compositions was proved using X-ray diffraction analysis. The homogeneity and microstructure were evaluated using FE-SEM. Physical properties such as glass transition temperature, crystallization temperature, density, optical transmission and electrical resistivity were measured. The results show that the Cu-Sb-S glasses form in the composition region of 21.5 and 24.5 mol% Cu2S. The glass transition temperature is 185°C and the optical transmission window is lying between 0.9 and 15 μm for the representative 22.5Cu2S - 77.5Sb2S3 glass sample. The result of electric resistivity indicates that the change of electric resistivity is about 3 orders by the crystallization of glass.
