Deep-ultraviolet light detection of p-type ultrananocrystalline diamond/hydrogenated amorphous carbon composite films

Shinya Ohmagari, Tsuyoshi Yoshitake

    研究成果: Contribution to journalArticle査読

    25 被引用数 (Scopus)

    抄録

    Deep-ultraviolet (DUV) light detection of p-type ultrananocrystalline diamond/hydrogenated amorphous carbon composite (UNCD/a-C:H) films prepared by pulsed laser deposition was investigated. The photocurrent spectra revealed that the UNCD/a-C:H films possess strong responses in the wavelength range between 210 and 280 nm, which might originate from UNCD grains. The heterojunction photodiodes comprised of p-type UNCD/a-C:H and n-type Si exhibited an obvious photovoltaic action for 254nm DUV light illumination. The external quantum efficiency and responsivity of the photodiodes were estimated to be 71% and 130mA/W, respectively. It was proved that UNCD/a-C:H is a new promising material applicable to DUV photodetectors.

    本文言語英語
    論文番号065202
    ジャーナルApplied Physics Express
    5
    6
    DOI
    出版ステータス出版済み - 6 2012

    All Science Journal Classification (ASJC) codes

    • 工学(全般)
    • 物理学および天文学(全般)

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