Role of samarium atoms in the formation of the structure of As-Se-S chalcogenide vitreous semiconductors

Role of samarium atoms in the formation of the structure of As-Se-S chalcogenide vitreous semiconductors

The Raman spectra of films of samarium-doped As-Se-S three-component chalcogenide vitreous semiconductors are studied. It is shown that the spectra are constituted by four bands in the frequency ranges 10–100, 195–290, 290–404, and 420–507 cm −1 , which strongly vary with doping. The structural unit...

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Veröffentlicht in:Semiconductors (Woodbury, N.Y.) N.Y.), 2014-06, Vol.48 (6), p.796-799
Hauptverfasser: Alekberov, R. I., Isayev, A. I., Mekhtiyeva, S. I., Isayeva, G. A.
Format: Artikel
Sprache:eng
Schlagworte:
Low-Dimensional Systems
Magnetic Materials
Magnetism
Physics
Physics and Astronomy
Quantum Phenomena
Raman spectroscopy
Rare earth metals
Semiconductor Structures
Semiconductors
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Zusammenfassung:The Raman spectra of films of samarium-doped As-Se-S three-component chalcogenide vitreous semiconductors are studied. It is shown that the spectra are constituted by four bands in the frequency ranges 10–100, 195–290, 290–404, and 420–507 cm −1 , which strongly vary with doping. The structural units in As-Se-S and their possible changes upon doping are determined. The results obtained are accounted for by the specific distribution of samarium atoms in the sample and by their chemical activity.
ISSN:1063-7826
1090-6479
DOI:10.1134/S1063782614060025