Surface enhanced Raman scattering of light by ZnO nanostructures

A. G. Milekhin, N. A. Yeryukov, L. L. Sveshnikova, T. A. Duda, E. I. Zenkevich, S. S. Kosolobov, A. V. Latyshev, C. Himcinski, N. V. Surovtsev, S. V. Adichtchev, Zhe Chuan Feng, Chia Cheng Wu, Dong Sing Wuu, D. R.T. Zahn

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)983-991
Number of pages9
JournalJournal of Experimental and Theoretical Physics
Volume113
Issue number6
DOIs
Publication statusPublished - Dec 2011
Externally publishedYes

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