Raman spectra of Ag- and Cu-photo-doped As40S60−xSex films
Source abstract
Abstract
Abstract Raman spectra of the chalcogenide vitreous layers (As40S60, As40S40Se20, As40S20Se40, As40Se60) non-doped and photo-doped by Ag, Cu were measured. The spectra were analyzed in terms of a molecular model. It was ascertained that, for the spectra of photo-doped As40S60−xSex layers, the shift of the main bands to the high frequency side and the appearance of the additional scattering bands in the low frequency spectral range are characteristic features. Variations in the Raman spectra with photodoping by Ag or Cu are consistent with the supposition concerning normal covalent and coordinative bond formation between metal additives and chalcogen atoms, which results in the different activation energy values for the silver photo-stimulated diffusion into chalcogenide layers.
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Research context
OpenAlex topics: Phase-change materials and chalcogenides · Crystal Structures and Properties · Chalcogenide Semiconductor Thin Films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (38)
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