Characterization of hydrogen-terminated CVD diamond surfaces and their contact properties

Hiroshi Kawarada, M. Aoki, H. Sasaki, K. Tsugawa

    Research output: Contribution to journalArticle

    63 Citations (Scopus)

    Abstract

    Metal-diamond contact properties have been investigated on diamond (001) 2 × 1 surfaces. The 2 × 1 reconstruction has been examined by atomic-scale scanning tunnelling microscopy. From ab initio molecular orbital calculations, the stablest structure of the 2 × 1 unit is a monohydride carbon dimer. On the surfaces the highest quality Schottky diodes have been fabricated using metals with lower electronegativities. The Schottky barrier heights depend on the metal electronegativity. Moreover ohmic contacts have been obtained in metals with higher electronegativities. These results indicate that the surface states are effectively reduced by the 2 × 1 surface reconstruction.

    Original languageEnglish
    Pages (from-to)961-965
    Number of pages5
    JournalDiamond and Related Materials
    Volume3
    Issue number4-6
    DOIs
    Publication statusPublished - 1994

    Fingerprint

    Diamond
    Electronegativity
    Hydrogen
    Chemical vapor deposition
    Diamonds
    Metals
    diamonds
    vapor deposition
    hydrogen
    metals
    Orbital calculations
    Surface reconstruction
    Ohmic contacts
    Surface states
    Scanning tunneling microscopy
    Molecular orbitals
    Schottky diodes
    Dimers
    scanning tunneling microscopy
    electric contacts

    ASJC Scopus subject areas

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

    Cite this

    Characterization of hydrogen-terminated CVD diamond surfaces and their contact properties. / Kawarada, Hiroshi; Aoki, M.; Sasaki, H.; Tsugawa, K.

    In: Diamond and Related Materials, Vol. 3, No. 4-6, 1994, p. 961-965.

    Research output: Contribution to journalArticle

    @article{611663cea1be43a69b3d7029a69db620,
    title = "Characterization of hydrogen-terminated CVD diamond surfaces and their contact properties",
    abstract = "Metal-diamond contact properties have been investigated on diamond (001) 2 × 1 surfaces. The 2 × 1 reconstruction has been examined by atomic-scale scanning tunnelling microscopy. From ab initio molecular orbital calculations, the stablest structure of the 2 × 1 unit is a monohydride carbon dimer. On the surfaces the highest quality Schottky diodes have been fabricated using metals with lower electronegativities. The Schottky barrier heights depend on the metal electronegativity. Moreover ohmic contacts have been obtained in metals with higher electronegativities. These results indicate that the surface states are effectively reduced by the 2 × 1 surface reconstruction.",
    author = "Hiroshi Kawarada and M. Aoki and H. Sasaki and K. Tsugawa",
    year = "1994",
    doi = "10.1016/0925-9635(94)90309-3",
    language = "English",
    volume = "3",
    pages = "961--965",
    journal = "Diamond and Related Materials",
    issn = "0925-9635",
    publisher = "Elsevier BV",
    number = "4-6",

    }

    TY - JOUR

    T1 - Characterization of hydrogen-terminated CVD diamond surfaces and their contact properties

    AU - Kawarada, Hiroshi

    AU - Aoki, M.

    AU - Sasaki, H.

    AU - Tsugawa, K.

    PY - 1994

    Y1 - 1994

    N2 - Metal-diamond contact properties have been investigated on diamond (001) 2 × 1 surfaces. The 2 × 1 reconstruction has been examined by atomic-scale scanning tunnelling microscopy. From ab initio molecular orbital calculations, the stablest structure of the 2 × 1 unit is a monohydride carbon dimer. On the surfaces the highest quality Schottky diodes have been fabricated using metals with lower electronegativities. The Schottky barrier heights depend on the metal electronegativity. Moreover ohmic contacts have been obtained in metals with higher electronegativities. These results indicate that the surface states are effectively reduced by the 2 × 1 surface reconstruction.

    AB - Metal-diamond contact properties have been investigated on diamond (001) 2 × 1 surfaces. The 2 × 1 reconstruction has been examined by atomic-scale scanning tunnelling microscopy. From ab initio molecular orbital calculations, the stablest structure of the 2 × 1 unit is a monohydride carbon dimer. On the surfaces the highest quality Schottky diodes have been fabricated using metals with lower electronegativities. The Schottky barrier heights depend on the metal electronegativity. Moreover ohmic contacts have been obtained in metals with higher electronegativities. These results indicate that the surface states are effectively reduced by the 2 × 1 surface reconstruction.

    UR - http://www.scopus.com/inward/record.url?scp=0028415963&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=0028415963&partnerID=8YFLogxK

    U2 - 10.1016/0925-9635(94)90309-3

    DO - 10.1016/0925-9635(94)90309-3

    M3 - Article

    AN - SCOPUS:0028415963

    VL - 3

    SP - 961

    EP - 965

    JO - Diamond and Related Materials

    JF - Diamond and Related Materials

    SN - 0925-9635

    IS - 4-6

    ER -