Surface enhanced Raman scattering of light by ZnO nanostructures

Raman scattering (including nonresonant, resonant, and surface enhanced scattering) of light by optical and surface phonons of ZnO nanocrystals and nanorods has been investigated. It has been found that the nonresonant and resonant Raman scattering spectra of the nanostructures exhibit typical vibra...

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Published inJournal of experimental and theoretical physics Vol. 113; no. 6; pp. 983 - 991
Main Authors Milekhin, A. G., Yeryukov, N. A., Sveshnikova, L. L., Duda, T. A., Zenkevich, E. I., Kosolobov, S. S., Latyshev, A. V., Himcinski, C., Surovtsev, N. V., Adichtchev, S. V., Feng, Zhe Chuan, Wu, Chia Cheng, Wuu, Dong Sing, Zahn, D. R. T.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 01.12.2011
Springer
Subjects
Classical and Quantum Gravitation
DEPOSITION
Elementary Particles
LIGHT SCATTERING
NANOSCIENCE AND NANOTECHNOLOGY
NANOSTRUCTURES
Particle and Nuclear Physics
PERMITTIVITY
PHONONS
Physics
Physics and Astronomy
Quantum Field Theory
RAMAN EFFECT
RAMAN SPECTRA
Raman spectroscopy
Relativity Theory
SELECTION RULES
SILVER
Solid State Physics
Solids and Liquids
SURFACES
VIBRATIONAL STATES
VISIBLE RADIATION
Zinc oxide
ZINC OXIDES
Raman Spectrum
Surface Optical
Silver Cluster
Optical Phonon
Surface Enhance Raman Scattering
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Summary:Raman scattering (including nonresonant, resonant, and surface enhanced scattering) of light by optical and surface phonons of ZnO nanocrystals and nanorods has been investigated. It has been found that the nonresonant and resonant Raman scattering spectra of the nanostructures exhibit typical vibrational modes, E 2 (high) and A 1 (LO), respectively, which are allowed by the selection rules. The deposition of silver nanoclusters on the surface of nanostructures leads either to an abrupt increase in the intensity (by a factor of 10 3 ) of Raman scattering of light by surface optical phonons or to the appearance of new surface modes, which indicates the observation of the phenomenon of surface enhanced Raman light scattering. It has been demonstrated that the frequencies of surface optical phonon modes of the studied nanostructures are in good agreement with the theoretical values obtained from calculations performed within the effective dielectric function model.
ISSN:1063-7761
1090-6509
DOI:10.1134/S1063776111140184