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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 |
License | Copyright not evaluated |
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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