AsS: Bulk inorganic molecular-based chalcogenide glass

Brazhkin, V. V.*; Gavrilyuk, A. G.*; Lyapin, A. G.*; Timofeev, Yu. A.*; Katayama, Yoshinori; Kohara, Shinji*

Applied Physics Letters, 91(3), p.031912_1 - 031912_3, 2007/07

https://doi.org/10.1063/1.2759261

A high pressure method to produce bulk chalcogenide glasses of a unique AsS composition has been developed. The structure, optical properties, and stability of the obtained glasses have been studied. Glasses have an intrinsic deep-red color, opticalpseudogap Eg1.75 eV, a broad Urbach absorption tail W120 meV, and high temperature stability up to 130C. AsS glasses show photoinduced transformations, including photocrystallization. The glass structure is largely based on the quasimolecular AsS units with partial polymerization providing an example of an inorganic molecular-based glass.