Photostructural transformations in amorphous Ge-S thin films: a light-scattering study

N. V. Bondar; N. A. Davydova; V. V. Tishchenko; Miroslav Vlcek

doi:10.1117/12.306242

20 April 1998 Photostructural transformations in amorphous Ge-S thin films: a light-scattering study

N. V. Bondar, N. A. Davydova, V. V. Tishchenko, Miroslav Vlcek

Proceedings Volume 3359, Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics 1997; (1998) https://doi.org/10.1117/12.306242
Event: International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics, 1997, Kiev, Ukraine

Abstract

Reversible changes of the Raman spectra by the cycle of band-gap laser irradiation and annealing (storing in the dark) has been observed for amorphous Ge₂₀S₈₀ thin films for the first time. The observed changes in the region of stretch vibrations of the chalcogenide atoms is direct evidence for the occurrence of gross structural changes in local bonding configuration cased by optical irradiation. It has been shown that under the laser irradiation the bonding tendency of the chalcogenide atoms is to form rings rather than chains, i.e. the cis-conformation is preferred over trans-conformation.

Citation Download Citation

N. V. Bondar, N. A. Davydova, V. V. Tishchenko, and Miroslav Vlcek "Photostructural transformations in amorphous Ge-S thin films: a light-scattering study", Proc. SPIE 3359, Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics 1997, (20 April 1998); https://doi.org/10.1117/12.306242

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