Nitrogen-doped ultrananocrystalline diamond/hydrogenated amorphous carbon composite films prepared by pulsed laser deposition

Sausan Al-Riyami, Shinya Ohmagari, Tsuyoshi Yoshitake

    Research output: Contribution to journalArticlepeer-review

    41 Citations (Scopus)

    Abstract

    Nitrogen-doped ultrananocrystalline diamond/hydrogenated amorphous carbon composite (UNCD/a-C:H) films were deposited by pulsed laser deposition. The film doped with a nitrogen content of 7.9 at.% possessed n-type conduction with an electrical conductivity of 18-1.cm-1 at 300 K. A heterojunction with p-type Si exhibited typical rectifying action. The UNCD grain size was estimated to be 2.5nm from X-ray diffraction measurement. Near-edge X-ray absorption fine-structure and Fourier transform infrared spectroscopies revealed the preferential formations of C=N and C-N bonds and an enhanced amount of sp2 bonds in the films.

    Original languageEnglish
    Article number115102
    JournalApplied Physics Express
    Volume3
    Issue number11
    DOIs
    Publication statusPublished - Nov 2010

    All Science Journal Classification (ASJC) codes

    • Engineering(all)
    • Physics and Astronomy(all)

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