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Phonon Spectra of Small Colloidal II-VI Semiconductor Nanocrystals
Joint Authors
Zahn, Dietrich R. T.
Rayevska, Olexandra
Kolny-Olesiak, Joanna
Dzhagan, Volodymyr
Lokteva, Irina
Valakh, Mykhailo
Mel'nik, Nikolai
Source
International Journal of Spectroscopy
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-09-14
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Resonant Raman spectroscopy has been employed to explore the first- and higher-order phonon spectra of several kinds of II-VI nanocrystals (NCs), with the aim of better understanding of the nature of phonon modes and forming a unified view onto the vibrational spectrum of semiconductor NCs.
Particularly, besides the previously discussed TO, SO, LO, and 2LO modes, the combinational modes of TO+LO and SO+LO can be assumed to account for the lineshape of the spectrum below 2LO band.
No trace of 2TO or 2SO band was detected, what can be the result of the dominance of Fröhlich mechanism in electron-phonon coupling in II-VI compounds.
The resonant phonon Raman spectrum of NCs smaller than 2 nm is shown to be dominated by a broad feature similar to the SO mode of larger NCs or phonon density of states of a bulk crystal.
American Psychological Association (APA)
Dzhagan, Volodymyr& Valakh, Mykhailo& Mel'nik, Nikolai& Rayevska, Olexandra& Lokteva, Irina& Kolny-Olesiak, Joanna…[et al.]. 2011. Phonon Spectra of Small Colloidal II-VI Semiconductor Nanocrystals. International Journal of Spectroscopy،Vol. 2012, no. 2012, pp.1-6.
https://search.emarefa.net/detail/BIM-479256
Modern Language Association (MLA)
Dzhagan, Volodymyr…[et al.]. Phonon Spectra of Small Colloidal II-VI Semiconductor Nanocrystals. International Journal of Spectroscopy No. 2012 (2012), pp.1-6.
https://search.emarefa.net/detail/BIM-479256
American Medical Association (AMA)
Dzhagan, Volodymyr& Valakh, Mykhailo& Mel'nik, Nikolai& Rayevska, Olexandra& Lokteva, Irina& Kolny-Olesiak, Joanna…[et al.]. Phonon Spectra of Small Colloidal II-VI Semiconductor Nanocrystals. International Journal of Spectroscopy. 2011. Vol. 2012, no. 2012, pp.1-6.
https://search.emarefa.net/detail/BIM-479256
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-479256