Second- and Third-order Raman Scattering in Bulk and Glass-embedded Nanometric CdS1 – xSex Crystals
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....
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| Format: | Article |
| Language: | English |
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Sumy State University
2014-11-01
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| Series: | Журнал нано- та електронної фізики |
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| Online Access: | http://jnep.sumdu.edu.ua/download/numbers/2014/4/articles/jnep_2014_V6_04006.pdf |
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| author | V.V. Lopushansky |
| author_facet | V.V. Lopushansky |
| author_sort | V.V. Lopushansky |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-c0049d0d21dd4530ad690f7440d8d599 |
| institution | DOAJ |
| issn | 2077-6772 |
| language | English |
| publishDate | 2014-11-01 |
| publisher | Sumy State University |
| record_format | Article |
| series | Журнал нано- та електронної фізики |
| spelling | doaj-art-c0049d0d21dd4530ad690f7440d8d5992025-08-20T03:05:17ZengSumy State UniversityЖурнал нано- та електронної фізики2077-67722014-11-016404006-104006-5Second- and Third-order Raman Scattering in Bulk and Glass-embedded Nanometric CdS1 – xSex CrystalsV.V. Lopushansky0Institute of Electron Physics, Ukrainian National Academy of Sciences, 21, Universytetska Str., 88017 Uzhhorod, UkraineSecond- 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.http://jnep.sumdu.edu.ua/download/numbers/2014/4/articles/jnep_2014_V6_04006.pdfRaman scatteringNanocrystalsElectron-phonon couplin |
| spellingShingle | V.V. Lopushansky Second- and Third-order Raman Scattering in Bulk and Glass-embedded Nanometric CdS1 – xSex Crystals Журнал нано- та електронної фізики Raman scattering Nanocrystals Electron-phonon couplin |
| title | Second- and Third-order Raman Scattering in Bulk and Glass-embedded Nanometric CdS1 – xSex Crystals |
| title_full | Second- and Third-order Raman Scattering in Bulk and Glass-embedded Nanometric CdS1 – xSex Crystals |
| title_fullStr | Second- and Third-order Raman Scattering in Bulk and Glass-embedded Nanometric CdS1 – xSex Crystals |
| title_full_unstemmed | Second- and Third-order Raman Scattering in Bulk and Glass-embedded Nanometric CdS1 – xSex Crystals |
| title_short | Second- and Third-order Raman Scattering in Bulk and Glass-embedded Nanometric CdS1 – xSex Crystals |
| title_sort | second and third order raman scattering in bulk and glass embedded nanometric cds1 xsex crystals |
| topic | Raman scattering Nanocrystals Electron-phonon couplin |
| url | http://jnep.sumdu.edu.ua/download/numbers/2014/4/articles/jnep_2014_V6_04006.pdf |
| work_keys_str_mv | AT vvlopushansky secondandthirdorderramanscatteringinbulkandglassembeddednanometriccds1xsexcrystals |