Glass formation and physical properties of Sb ₂S ₃-CuI chalcogenide system

Novel chalcogenide glasses of pseudo-binary (100-x)Sb₂S₃-xCuI systems were synthesized by traditional melt-quenching method. The glass-forming region of Sb₂S₃-CuI system was determined ranging from x=30 mol% to 40 mol%. CuI acts as a non-bridging modifier to form appropriate amount of SbSI structural units for improving the glass-forming ability of Sb₂S₃. Particularly, as-prepared glassy sample is able to transmit light beyond 14 μm, which is the wider transparency region than most sulfide glasses. Their physical properties, including Vickers hardness (H _v), density (ρ ), and ionic conductivity (σ ) were characterized and analyzed with the compositional-dependent Raman spectra. These experimental results would provide useful knowledge for the development of novel multi-spectral optical materials and glassy electrolytes.