Light Emission from Organic Molecules on Metal Substrates Induced by Tunneling Currents

X. L. Guo, Z. C. Dong, A. S. Trifonov, S. Yokoyama, S. Mashiko, T. Okamoto

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Tunneling currents in a scanning tunneling microscope were used to induce light emission by positioning either a gold-coated W tip on the surface of a porphyrin molecular monolayer on Cu(100) or a pure W tip on the surface of a perinone derivative monolayer on Au(100). The emission spectra from the surfaces of both molecules are dominated by the plasmon-mediated emission from substrates. Molecular fluorescence is completely quenched by the metal substrate. The organic molecules act as a spacer to modify the tip-induced plasmon modes, enhance the intensity of the plasmon-mediated emission, and cause blue shift of the spectra.

Original languageEnglish
Pages (from-to)6937-6940
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume42
Issue number11
DOIs
Publication statusPublished - Nov 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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