Abstract
The authors have developed a high pressure method to produce bulk chalcogenide glasses of a unique AsS composition. The structure, optical properties, and stability of the obtained glasses have been studied. Glasses have an intrinsic deep-red color, optical pseudogap Eg≈1.75eV, a broad Urbach absorption tail WU≈120meV, and high temperature stability up to 130°C. AsS glasses show photoinduced transformations, including photocrystallization. The glass structure is largely based on the quasimolecular As4S4 units with partial polymerization providing an example of an inorganic molecular-based glass.
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