Effects of laser illumination during controlled-rate oxidation-reduction cycles on sers of chloride at roughened ag electrodes

David D. Tuschel, Jeanne E. Pemberton

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

A study of the effects of laser wavelength and power density during controlled-rate illuminated oxidation-reduction cycles (ORCs) of Ag electrodes on the SERS intensity of the ν(Ag-Cl) band is reported. SERS spectra were acquired with a constant excitation wavelength after illuminated ORCs to deconvolute the SERS excitation behavior from the ORC illumination effects. Enhancement of SERS intensities is greater for illumination in the blue and green wavelength regions than for illumination in the red wavelength region. This enhancement is selective for the illumination position on the Ag electrode during the ORC. These results suggest the enhancement results from a photoeffect analogous to latent image formation in silver halide photography.

Original languageEnglish (US)
Pages (from-to)58-62
Number of pages5
JournalLangmuir
Volume4
Issue number1
DOIs
StatePublished - Jan 1 1988

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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