Dominant free-exciton recombination radiation in chemical vapor deposited diamonds

Hiroshi Kawarada, Takahiro Tsutsumi, Hiroki Hirayama, Akira Yamaguchi

    Research output: Contribution to journalArticle

    36 Citations (Scopus)

    Abstract

    Dominant free-exciton recombination radiation has been obtained from chemical vapor deposited diamonds. The crystals are formed in a microwave plasma using the mixtures CO and CO2 diluted with hydrogen. The concentration of CO2 and the position of the samples in the plasma affect the crystallinity of the samples. The peak emission intensity ratio between the free-exciton recombination radiation and the band A emission is more than 20 in the samples formed at the edge of discharging area and with the optimum concentration of CO2. The value is the highest ever reported in diamond.

    Original languageEnglish
    Pages (from-to)451-453
    Number of pages3
    JournalApplied Physics Letters
    Volume64
    Issue number4
    DOIs
    Publication statusPublished - 1994

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    diamonds
    excitons
    vapors
    radiation
    crystallinity
    microwaves
    hydrogen
    crystals

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    Dominant free-exciton recombination radiation in chemical vapor deposited diamonds. / Kawarada, Hiroshi; Tsutsumi, Takahiro; Hirayama, Hiroki; Yamaguchi, Akira.

    In: Applied Physics Letters, Vol. 64, No. 4, 1994, p. 451-453.

    Research output: Contribution to journalArticle

    Kawarada, Hiroshi ; Tsutsumi, Takahiro ; Hirayama, Hiroki ; Yamaguchi, Akira. / Dominant free-exciton recombination radiation in chemical vapor deposited diamonds. In: Applied Physics Letters. 1994 ; Vol. 64, No. 4. pp. 451-453.
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