Adsorption and reaction of C60 on Si(111) surface: A combined study by hreels and STM

C. W. Hu, A. Kasuya, Shozo Suto, A. Wawro, Y. Nishina

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

A combined system of STM and HREELS has been demonstrated to be a powerful technique for studying the adsorption and reaction of C60 molecules on Si(111) surface, and has bridged the gap between adsorbate bonding states and STM topographic images. We find that the ordered close-packed C60 islands can be grown at room temperature. A brief annealing at 800°C gives rise to the aggregation of C60 molecules into three-dimensional islands. In this case, the nearest neighbor distance among C60 molecules has decreased from 10.0 to 9.4 Å as displayed in STM images, and the icosahedral symmetry of C60 has been reduced as showed in the HREELS spectrum. It indicates that the intermolecular covalent bond exists and a new structure has been stimulated by annealing C60 film on Si(111) surface. Further annealing results in the formation of SiC film on Si(111) substrate.

Original languageEnglish
Pages (from-to)933-936
Number of pages4
JournalSurface Review and Letters
Volume3
Issue number1
DOIs
Publication statusPublished - 1996 Jan 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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