Optically induced electron transfer from conjugated organic molecules to charged metal clusters

N. Koch, A. C. Dürr, J. Ghijsen, R. L. Johnson, J. J. Pireaux, Jeffrey Schwartz, F. Schreiber, H. Dosch, Antoine Kahn

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

The formation of small gold clusters at the initial stage of the metal growth on a thin film of the conjugated organic semiconductor diindenoperylene (DIP) leads to charging during ultraviolet photoemission spectroscopy (UPS) investigations. Additional irradiation of the sample with visible light was successfully applied to re-establish charge neutrality on the sample surface. By varying the light energy, we demonstrate that the optical formation of excitons and/or polarons results in efficient electron transfer from DIP to the positively charged Au clusters and thus the elimination of charging in UPS. This allows the collection of reliable information on the interface electronic structure.

Original languageEnglish (US)
Pages (from-to)145-149
Number of pages5
JournalThin Solid Films
Volume441
Issue number1-2
DOIs
StatePublished - Sep 22 2003

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Keywords

  • Charging
  • Gold
  • Organic semiconductors
  • Photoelectron spectroscopy

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  • Cite this

    Koch, N., Dürr, A. C., Ghijsen, J., Johnson, R. L., Pireaux, J. J., Schwartz, J., Schreiber, F., Dosch, H., & Kahn, A. (2003). Optically induced electron transfer from conjugated organic molecules to charged metal clusters. Thin Solid Films, 441(1-2), 145-149. https://doi.org/10.1016/S0040-6090(03)00925-8