Electron-spectroscopy and -diffraction study of the conductivity of CVD diamond (0 0 1) 2 × 1 surface

S. Kono, T. Takano, M. Shimomura, T. Goto, K. Sato, T. Abukawa, M. Tachiki, Hiroshi Kawarada

    Research output: Contribution to journalArticle

    10 Citations (Scopus)

    Abstract

    A chemical vapor deposition as-grown diamond (001) single-domain 2×1 surface was studied by electron-spectroscopy and electron-diffraction in ultrahigh vacuum (UHV). In order to change the surface conductivity (SC) of the diamond in UHV, three annealing stages were used; without annealing, annealing at 300 °C and annealing at 550 °C. From low energy electron diffraction and X-ray photoelectron spectroscopic (XPS) studies, an existence of SC was suggested for the first two stages of annealing and an absence of SC was suggested for the last stage of annealing. Changes in C KVV Auger electron spectroscopic spectra, C KVV Auger electron diffraction (AED) patterns and C 1s XPS peak positions were noticed between the annealing stages at 300 and 550 °C. These changes are interpreted as such that the state of hydrogen involvement in a subsurface of diamond (001)2×1 changes as SC changes. In particular, the presence of local disorder in diamond configuration in SC subsurface is pointed out from C KVV AED. From C 1s XPS peak shifts, a lower bound for the Fermi-level for SC layers from the valence band top is presented to be ∼0.5 eV.

    Original languageEnglish
    Pages (from-to)180-188
    Number of pages9
    JournalSurface Science
    Volume529
    Issue number1-2
    DOIs
    Publication statusPublished - 2003 Apr 1

    Fingerprint

    Diamond
    Electron spectroscopy
    electron spectroscopy
    Chemical vapor deposition
    Diamonds
    Diffraction
    diamonds
    vapor deposition
    Annealing
    conductivity
    annealing
    diffraction
    electron diffraction
    Photoelectrons
    Electron diffraction
    photoelectrons
    Ultrahigh vacuum
    X rays
    ultrahigh vacuum
    x rays

    Keywords

    • Auger electron diffraction
    • Auger electron spectroscopy
    • Chemical vapor deposition
    • Diamond
    • Surface electrical transport (Surface conductivity, Surface recombination, etc.)
    • X-ray photoelectron spectroscopy

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Condensed Matter Physics
    • Surfaces and Interfaces

    Cite this

    Electron-spectroscopy and -diffraction study of the conductivity of CVD diamond (0 0 1) 2 × 1 surface. / Kono, S.; Takano, T.; Shimomura, M.; Goto, T.; Sato, K.; Abukawa, T.; Tachiki, M.; Kawarada, Hiroshi.

    In: Surface Science, Vol. 529, No. 1-2, 01.04.2003, p. 180-188.

    Research output: Contribution to journalArticle

    Kono, S, Takano, T, Shimomura, M, Goto, T, Sato, K, Abukawa, T, Tachiki, M & Kawarada, H 2003, 'Electron-spectroscopy and -diffraction study of the conductivity of CVD diamond (0 0 1) 2 × 1 surface', Surface Science, vol. 529, no. 1-2, pp. 180-188. https://doi.org/10.1016/S0039-6028(03)00241-3
    Kono, S. ; Takano, T. ; Shimomura, M. ; Goto, T. ; Sato, K. ; Abukawa, T. ; Tachiki, M. ; Kawarada, Hiroshi. / Electron-spectroscopy and -diffraction study of the conductivity of CVD diamond (0 0 1) 2 × 1 surface. In: Surface Science. 2003 ; Vol. 529, No. 1-2. pp. 180-188.
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