Adsorption of cata-condensed aromatics on a Si(1 0 0)-2 × 1 surface investigated by infrared absorption spectroscopy

K. Okamura, Y. Hosoi, Y. Kimura, H. Ishii, M. Niwano

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The analysis and control of interfaces between organic molecules and Si surfaces are basic issues for developing organic-inorganic hybrid devices. In this study, the adsorption of cata-condensed aromatics such as naphthalene, anthracene and pentacene on a Si(100)-2 × 1 surface was investigated by infrared reflection absorption spectroscopy in the multiple internal reflection geometry (MIR-IRAS). It was found that the adsorption configuration of naphthalene is strongly dependent on the surface coverage. In contrast, larger aromatics such as anthracene and pentacene show less surface coverage dependence. The details of the adsorption configurations are discussed on the basis of frequency calculations performed with a density functional theory.

Original languageEnglish
Pages (from-to)440-444
Number of pages5
JournalApplied Surface Science
Volume237
Issue number1-4
DOIs
Publication statusPublished - 2004 Oct 15
Externally publishedYes

Keywords

  • Aromatics
  • Chemisorption
  • Density functional calculations
  • Infrared absorption spectroscopy
  • Low index single crystal surfaces
  • Silicon

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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