Cathodoluminescence of phosphorus doped (111) homoepitaxial diamond thin films

K. Tanabe, K. Nakazawa, J. Susantyo, Hiroshi Kawarada, S. Koizumi

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    A homoepitaxial diamond film with a thickness of approximately 1 μm was grown on the (111) surface of a type Ib diamond substrate with dopant concentration (PH3/CH4) of 500 ppm. Bound exciton recombination radiation due to the neutral donors has been observed in the peaks at 5.18 and 5.32 eV. The dominant peak at 5.18 eV is associated with one TO phonon. The peak at 5.32 eV is the radiation without phonon emission due to the localization of donors. This appearance of non-phonon emission is one of the important evidences to prove the two peaks at 5.18 and 5.32 eV to be the recombination radiation of bound exciton due to the donor. The binding energy of the free exciton to the donors, which is deduced from the energy difference between free and bound exciton, is 90 meV.

    Original languageEnglish
    Pages (from-to)1652-1654
    Number of pages3
    JournalDiamond and Related Materials
    Volume10
    Issue number9-10
    DOIs
    Publication statusPublished - 2001 Sep

    Fingerprint

    Cathodoluminescence
    Diamond films
    cathodoluminescence
    Excitons
    Phosphorus
    phosphorus
    diamonds
    excitons
    Thin films
    thin films
    Radiation
    radiation
    Diamond
    Binding energy
    diamond films
    Diamonds
    binding energy
    Doping (additives)
    LDS 751
    Substrates

    Keywords

    • Cathodoluminescence
    • Diamond
    • Phosphorus

    ASJC Scopus subject areas

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

    Cite this

    Cathodoluminescence of phosphorus doped (111) homoepitaxial diamond thin films. / Tanabe, K.; Nakazawa, K.; Susantyo, J.; Kawarada, Hiroshi; Koizumi, S.

    In: Diamond and Related Materials, Vol. 10, No. 9-10, 09.2001, p. 1652-1654.

    Research output: Contribution to journalArticle

    Tanabe, K. ; Nakazawa, K. ; Susantyo, J. ; Kawarada, Hiroshi ; Koizumi, S. / Cathodoluminescence of phosphorus doped (111) homoepitaxial diamond thin films. In: Diamond and Related Materials. 2001 ; Vol. 10, No. 9-10. pp. 1652-1654.
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    AU - Tanabe, K.

    AU - Nakazawa, K.

    AU - Susantyo, J.

    AU - Kawarada, Hiroshi

    AU - Koizumi, S.

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    N2 - A homoepitaxial diamond film with a thickness of approximately 1 μm was grown on the (111) surface of a type Ib diamond substrate with dopant concentration (PH3/CH4) of 500 ppm. Bound exciton recombination radiation due to the neutral donors has been observed in the peaks at 5.18 and 5.32 eV. The dominant peak at 5.18 eV is associated with one TO phonon. The peak at 5.32 eV is the radiation without phonon emission due to the localization of donors. This appearance of non-phonon emission is one of the important evidences to prove the two peaks at 5.18 and 5.32 eV to be the recombination radiation of bound exciton due to the donor. The binding energy of the free exciton to the donors, which is deduced from the energy difference between free and bound exciton, is 90 meV.

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