Deposition of amorphous CNx by d.c. and rf plasma sputtering using a rf radical nitrogen beam source

Y. Hayashi, M. M. Rahman, K. Kaneko, T. Soga, M. Umeno, T. Jimbo

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)


    Amorphous CNx thin films were deposited by d.c. and rf Ar plasma sputtering combined with a nitrogen rf radical beam source which supplies active nitrogen species to the growing film surface. The dependence modifications of the optical and the structural properties on nitrogen incorporation were investigated using ultraviolet-visible spectroscopy, X-ray photoelectron spectroscopy, a four-point-probe method and electron energy-loss spectroscopy. For the rf-sputtered films, the optical band gap was found to increase with the increase in the nitrogen content. For the d.c.-sputtered films, the optical gap first decreased to zero at low nitrogen content, and then increased with a further increase in the nitrogen content. C-K energy-loss near-edge structure (ELNES) showed a slight broadening on the lower energy side. The local environment of C and N atoms are almost similar as observed by comparing the C-K and N-K ELNESs.

    Original languageEnglish
    Pages (from-to)1178-1182
    Number of pages5
    JournalDiamond and Related Materials
    Issue number3-6
    Publication statusPublished - Mar 2002

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Chemistry(all)
    • Mechanical Engineering
    • Materials Chemistry
    • Electrical and Electronic Engineering


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