Abstract
Various photo-induced effects in chalcogenide glasses have been reported until now.l,2 Chalcogenide glasses have a flexible structure because of the presence of lone pair electrons of chalcogen atoms and the low average coordination number. As a result, (1) defects in these glasses have a negative effective electron correlation energy, resulting in positively and negatively charged defect centers, D+ and Dā, at equilibrium and (2) these glasses undergo a reversible photo-structural change known as a photo-darkening by a cycle of illumination and annealing.
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Ā© 1987 Plenum Press, New York
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Shimizu, T., Kawachi, G., Kumeda, M. (1987). Photo-Induced Effects in Amorphous Ge-S. In: Kastner, M.A., Thomas, G.A., Ovshinsky, S.R. (eds) Disordered Semiconductors. Institute for Amorphous Studies Series. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-1841-5_21
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DOI: https://doi.org/10.1007/978-1-4613-1841-5_21
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