Temperature and incident beam-current dependence of dominant free-exciton recombination radiation from high-purity chemical vapor deposition (CVD) diamonds

Akira Yamaguchi, Satoshi Yamashita, Takahiro Tsutsumi, Hiroshi Kawarada

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    8 Citations (Scopus)

    Abstract

    Dominant free-exciton (FE) recombination radiation has been obtained from high-purity Chemical vapor deposition (CVD) diamond synthesized on Cu substrates by means of microwave plasma CVD using CH4+O2 diluted with H2. The intensity of FE emission is almost constant between 80 K and 170 K, and is reduced by two orders of magnitude at room temperature. The emission increases in proportion to the incident beam current from 1×10-9 A to 2×10-6 A. The spectrum shapes between 200 nm and 600 nm do not depend on the beam current. In addition, the isotopic effect on the FE emission peak shift has been observed in the spectrum from 13C-enriched (96.6%) CVD diamond for the first time.

    Original languageEnglish
    JournalJapanese Journal of Applied Physics, Part 2: Letters
    Volume33
    Issue number8 A
    Publication statusPublished - 1994 Aug 1

    Fingerprint

    beam currents
    Excitons
    Chemical vapor deposition
    Diamonds
    purity
    diamonds
    excitons
    vapor deposition
    Radiation
    radiation
    Temperature
    temperature
    proportion
    Microwaves
    Plasmas
    microwaves
    shift
    room temperature
    Substrates

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

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    title = "Temperature and incident beam-current dependence of dominant free-exciton recombination radiation from high-purity chemical vapor deposition (CVD) diamonds",
    abstract = "Dominant free-exciton (FE) recombination radiation has been obtained from high-purity Chemical vapor deposition (CVD) diamond synthesized on Cu substrates by means of microwave plasma CVD using CH4+O2 diluted with H2. The intensity of FE emission is almost constant between 80 K and 170 K, and is reduced by two orders of magnitude at room temperature. The emission increases in proportion to the incident beam current from 1×10-9 A to 2×10-6 A. The spectrum shapes between 200 nm and 600 nm do not depend on the beam current. In addition, the isotopic effect on the FE emission peak shift has been observed in the spectrum from 13C-enriched (96.6{\%}) CVD diamond for the first time.",
    author = "Akira Yamaguchi and Satoshi Yamashita and Takahiro Tsutsumi and Hiroshi Kawarada",
    year = "1994",
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    language = "English",
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    journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",
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    T1 - Temperature and incident beam-current dependence of dominant free-exciton recombination radiation from high-purity chemical vapor deposition (CVD) diamonds

    AU - Yamaguchi, Akira

    AU - Yamashita, Satoshi

    AU - Tsutsumi, Takahiro

    AU - Kawarada, Hiroshi

    PY - 1994/8/1

    Y1 - 1994/8/1

    N2 - Dominant free-exciton (FE) recombination radiation has been obtained from high-purity Chemical vapor deposition (CVD) diamond synthesized on Cu substrates by means of microwave plasma CVD using CH4+O2 diluted with H2. The intensity of FE emission is almost constant between 80 K and 170 K, and is reduced by two orders of magnitude at room temperature. The emission increases in proportion to the incident beam current from 1×10-9 A to 2×10-6 A. The spectrum shapes between 200 nm and 600 nm do not depend on the beam current. In addition, the isotopic effect on the FE emission peak shift has been observed in the spectrum from 13C-enriched (96.6%) CVD diamond for the first time.

    AB - Dominant free-exciton (FE) recombination radiation has been obtained from high-purity Chemical vapor deposition (CVD) diamond synthesized on Cu substrates by means of microwave plasma CVD using CH4+O2 diluted with H2. The intensity of FE emission is almost constant between 80 K and 170 K, and is reduced by two orders of magnitude at room temperature. The emission increases in proportion to the incident beam current from 1×10-9 A to 2×10-6 A. The spectrum shapes between 200 nm and 600 nm do not depend on the beam current. In addition, the isotopic effect on the FE emission peak shift has been observed in the spectrum from 13C-enriched (96.6%) CVD diamond for the first time.

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