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Title Second- and third-order Raman scattering in bulk and glass-embedded nanometric CdS1 – xSex crystals
Authors Lopushansky, V.V.
ORCID
Keywords Raman scattering
Nanocrystals
Electron-phonon coupling
Type Article
Date of Issue 2014
URI http://essuir.sumdu.edu.ua/handle/123456789/38419
Publisher Sumy State University
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Citation V.V. Lopushansky, J. Nano- Electron. Phys. 6 No 4, 04006 (2014)
Abstract Second- and third-order Raman spectra of bulk and nanometric CdS1 – xSex crystals were measured. At off-resonance excitation conditions the second-order Raman spectra of bulk CdS1 – xSex exhibit anharmonic coupling of optical phonons and two-phonon states with the participation of acoustic phonons. Resonant Raman spectra of CdS1 – xSex single crystals with a strong enhancement of multiple LO phonon bands show the evidence for the strong electron-phonon coupling in bulk CdS1 – xSex crystals. From the ratio of intensities of multiple and single LO phonon bands in the resonance Raman spectra of the glass-embedded CdS1 – Sex nanocrystals one may conclude that the electron-phonon coupling in the nanocrystals is much smaller than in the corresponding bulk materials.
Appears in Collections: Журнал нано- та електронної фізики (Journal of nano- and electronic physics)

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