An electron-spectroscopic view of CVD diamond surface conductivity

S. Kono, M. Shiraishi, T. Goto, T. Abukawa, M. Tachiki, Hiroshi Kawarada

    Research output: Contribution to journalArticle

    12 Citations (Scopus)

    Abstract

    Three diamond (001) samples were made by CVD growth on synthetic diamond substrates in a same batch of growth, for which sheet resistance in atmospheric environment was confirmed. A simple two-point probe method has been applied to the samples to measure sheet resistance in UHV of 0.2-50 MΩ/square. Soft X-ray-induced secondary electron spectroscopy has been used to determine the Fermi level position in UHV of the samples for which in-UHV sheet resistance values were known. The Fermi level as measured turned out to be 1.1±0.2 eV above the valence band top and stayed at the same position within ∼0.1 eV with the sheet resistance change of an order of 2. On the basis of these findings, a plausible model of surface conductivity of CVD diamond is suggested.

    Original languageEnglish
    Pages (from-to)459-465
    Number of pages7
    JournalDiamond and Related Materials
    Volume14
    Issue number3-7
    DOIs
    Publication statusPublished - 2005 Mar

    Fingerprint

    Diamond
    Sheet resistance
    Chemical vapor deposition
    Diamonds
    diamonds
    vapor deposition
    conductivity
    Electrons
    Fermi level
    electrons
    Synthetic diamonds
    Electron spectroscopy
    Valence bands
    electron spectroscopy
    valence
    X rays
    Substrates
    x rays

    Keywords

    • Diamond (001)
    • Diamond growth and characterisation
    • Secondary electron spectroscopy
    • Surface conductivity

    ASJC Scopus subject areas

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

    Cite this

    An electron-spectroscopic view of CVD diamond surface conductivity. / Kono, S.; Shiraishi, M.; Goto, T.; Abukawa, T.; Tachiki, M.; Kawarada, Hiroshi.

    In: Diamond and Related Materials, Vol. 14, No. 3-7, 03.2005, p. 459-465.

    Research output: Contribution to journalArticle

    Kono, S. ; Shiraishi, M. ; Goto, T. ; Abukawa, T. ; Tachiki, M. ; Kawarada, Hiroshi. / An electron-spectroscopic view of CVD diamond surface conductivity. In: Diamond and Related Materials. 2005 ; Vol. 14, No. 3-7. pp. 459-465.
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