Radiation-stimulated changes in the transmission of chalcogenide glasses As2S3-Ge2S3

O. Shpotyuk, E. Skordeva, R. Golovchak, V. Pamukchieva, and A. Kovalskii.

Journal of Applied Spectroscopy, vol. 66, No. 5, 1999, p. 749-753.

Abstract

The radiative-optical properties of chalcogenide glass-like semiconductors of the As2S3-Ge2S3 system in the region of a topological 2D-3D-phase transition are investigated. It is shown that y-irradiation of samples by an absorbed dose of 4.4*106 Gy leads to a longwave shift of their optical-transmission edge in the spectrum. The effect observed depends on the structural type of the glasses investigated and changes considerably near the 2D-3D-phase transition. Two components of the transmission-edge shift are detected: a static component, which remains unchanged for a long time after irradiation of the samples, and a dynamic one, which gradually fades in 2-3 months. It is suggested that the microstructural mechanism of these changes is attributable to processes of coordination defect formation in the structural skeleton of the samples.

pdf

This entry was posted in 1999, Our publications. Bookmark the permalink.

Leave a Reply