X-ray photoelectron spectroscopy of air-exposed C60 films: Origin of the O1 s core peak

J. Onoe, K. Takeuchi, K. Ohno, Yoshiyuki Kawazoe

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

X-ray photoelectron spectra of C60 films exposed to air of ca. 20% and 60% humidity at 23°C for 1 h are presented. It was found that the O1 s core peak appeared at a binding energy of 533.5 eV for the film exposed to air of ca. 60% humidity, while no peak corresponding to the O1 s photoelectrons was observed for the film exposed to air of ca. 20% humidity. The binding energy of 533.5 eV for the O1 s core peak is close to that of about 533 eV for the O1 s core peak of solid H2O, while it is different from that of 537 eV for the O1 s core peak of solid O2 on C60 film. These facts indicate that the O1 s peak observed for the air-exposed C60 film was due to H2O molecules adsorbed on the film.

Original languageEnglish
Pages (from-to)385-388
Number of pages4
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume16
Issue number2
DOIs
Publication statusPublished - 1998 Jan 1

ASJC Scopus subject areas

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

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