Open AccessEnhanced Raman scattering of ZnO nanocrystals in the vicinity of gold and silver nanostructured surfaces
Author(s) -
Alina Muravitskaya,
Anna Rumyantseva,
Sergeï Kostcheev,
Volodymyr Dzhagan,
A. L. Stroyuk,
PierreMichel Adam
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.00a168
Subject(s) - raman scattering , materials science , nanocrystal , raman spectroscopy , scattering , phonon , optics , metal , semiconductor , optoelectronics , nanotechnology , condensed matter physics , physics , metallurgy
nonresonant surface enhanced Raman scattering by optical phonons of ZnO nanocrystals on and beneath silver and gold island films is reported. For both configurations comparable SERS efficiency is observed, proving their potential utility. Variations in peak intensities can be attributed to difference in the morphology of island films on and beneath nanocrystals as well as to variation of the interface between semiconductor and metal. The dominant peaks in the SERS spectra are assigned to surface optical phonon modes.