Effect of iodide ions on the hydrogen-terminated and partially oxygen-terminated diamond surface

Hirofumi Kanazawa, Kwang Soup Song, Toshikatsu Sakai, Yusuke Nakamura, Hitoshi Umezawa, Minoru Tachiki, Hiroshi Kawarada

    Research output: Contribution to journalArticle

    34 Citations (Scopus)

    Abstract

    The effect of I- ions on the threshold voltages of the electrolyte-solution-gate diamond field-effect transistors (SGFETs) in KI solution is investigated. The threshold voltages of hydrogen-terminated (H-terminated) diamond SGFETs shift in the KI concentration range of 10-6-10-1 M in aqueous solutions. The sensitivity of the H-terminated diamond surface to I- ions is higher than that to Cl- or Br- ions. However, the sensitivity to I- ions of the partially oxygen-terminated (O-terminated) diamond surface drastically decreases with ozone treatment. The mechanisms of these phenomena can be explained by the surface charge and the adsorbability of I- ions on the H-terminated and O-terminated diamond surfaces.

    Original languageEnglish
    Pages (from-to)618-622
    Number of pages5
    JournalDiamond and Related Materials
    Volume12
    Issue number3-7
    DOIs
    Publication statusPublished - 2003 Mar

    Fingerprint

    Diamond
    Iodides
    iodides
    Hydrogen
    Diamonds
    diamonds
    Ions
    Oxygen
    oxygen
    hydrogen
    ions
    Field effect transistors
    Threshold voltage
    threshold voltage
    field effect transistors
    Ozone
    sensitivity
    Surface charge
    Electrolytes
    ozone

    Keywords

    • Hydrogen-terminated diamond
    • Iodide ions
    • Ion sensitive FET
    • Oxygen-terminated diamond

    ASJC Scopus subject areas

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

    Cite this

    Effect of iodide ions on the hydrogen-terminated and partially oxygen-terminated diamond surface. / Kanazawa, Hirofumi; Song, Kwang Soup; Sakai, Toshikatsu; Nakamura, Yusuke; Umezawa, Hitoshi; Tachiki, Minoru; Kawarada, Hiroshi.

    In: Diamond and Related Materials, Vol. 12, No. 3-7, 03.2003, p. 618-622.

    Research output: Contribution to journalArticle

    Kanazawa, Hirofumi ; Song, Kwang Soup ; Sakai, Toshikatsu ; Nakamura, Yusuke ; Umezawa, Hitoshi ; Tachiki, Minoru ; Kawarada, Hiroshi. / Effect of iodide ions on the hydrogen-terminated and partially oxygen-terminated diamond surface. In: Diamond and Related Materials. 2003 ; Vol. 12, No. 3-7. pp. 618-622.
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    abstract = "The effect of I- ions on the threshold voltages of the electrolyte-solution-gate diamond field-effect transistors (SGFETs) in KI solution is investigated. The threshold voltages of hydrogen-terminated (H-terminated) diamond SGFETs shift in the KI concentration range of 10-6-10-1 M in aqueous solutions. The sensitivity of the H-terminated diamond surface to I- ions is higher than that to Cl- or Br- ions. However, the sensitivity to I- ions of the partially oxygen-terminated (O-terminated) diamond surface drastically decreases with ozone treatment. The mechanisms of these phenomena can be explained by the surface charge and the adsorbability of I- ions on the H-terminated and O-terminated diamond surfaces.",
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    AU - Kanazawa, Hirofumi

    AU - Song, Kwang Soup

    AU - Sakai, Toshikatsu

    AU - Nakamura, Yusuke

    AU - Umezawa, Hitoshi

    AU - Tachiki, Minoru

    AU - Kawarada, Hiroshi

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    AB - The effect of I- ions on the threshold voltages of the electrolyte-solution-gate diamond field-effect transistors (SGFETs) in KI solution is investigated. The threshold voltages of hydrogen-terminated (H-terminated) diamond SGFETs shift in the KI concentration range of 10-6-10-1 M in aqueous solutions. The sensitivity of the H-terminated diamond surface to I- ions is higher than that to Cl- or Br- ions. However, the sensitivity to I- ions of the partially oxygen-terminated (O-terminated) diamond surface drastically decreases with ozone treatment. The mechanisms of these phenomena can be explained by the surface charge and the adsorbability of I- ions on the H-terminated and O-terminated diamond surfaces.

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