単純化されたプロセスにより形成されたコバルトシリサイド上のコバルトを触媒とした熱フィラメントCVD法による単層カーボンナノチューブの低温高密度成長  [in Japanese] High-Density Growth of Single-Walled Carbon Nanotubes Using Cobalt on Cobalt Silicide Formed via Simplified Process as a Catalyst by Hot-Filament CVD at Low-Temperatures  [in Japanese]

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Author(s)

Abstract

<p>As a support of catalytic Co nanoparticles used for the growth of high-density single-walled carbon nanotubes (SWCNTs), conductive Co silicide films are superior to insulating SiO<sub>2</sub> films. A Co silicide films is formed through reaction between a Co thin film and the underlying Si wafer. During this process, however, a TiN cap film must be formed to prevent the Co thin film from forming Co nanoparticles and must be etched after the formation of the silicide film, which makes the formation process complicated. In this study, we optimized the thickness of the Co film and formed a silicide film without using a TiN cap film to simplify the formation process. As a result, the formation of the Co nanoparticles was greatly suppressed during the formation of a silicide film. Using the Co silicide film obtained after the formation process at 650<sup>o</sup>C for 10 min as the support of catalytic Co nanoparticles, vertically aligned CNTs film with a thickness of 5.3 μm were obtained by hot-filament chemical vapor deposition (CVD) with ethanol steam at 450<sup>o</sup>C for 30 min. This thickness is approximately 1.8-fold that previously reported.</p>

Journal

  • Hyomen Kagaku

    Hyomen Kagaku 38(7), 357-361, 2017

    The Surface Science Society of Japan

Codes

  • NII Article ID (NAID)
    130005815150
  • NII NACSIS-CAT ID (NCID)
    AN00334149
  • Text Lang
    JPN
  • ISSN
    0388-5321
  • NDL Article ID
    028381806
  • NDL Call No.
    Z15-379
  • Data Source
    NDL  J-STAGE 
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