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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27468


    Title: Selective area growth of carbon nanostructure synthesized by catalyst-assisted conversion of nanodiamond films
    Authors: Teng, Mao-ying;Liu, Kuo-shung;Lee, Yen-chih;Lin, Sue-chun;Cheng, Hsiu-fung;林諭男;Lin, I-nan
    Contributors: 淡江大學物理學系
    Keywords: Nanodiamonds;Carbon materials;Electron field emission
    Date: 2005-03
    Issue Date: 2009-12-31 10:10:41 (UTC+8)
    Publisher: Elsevier
    Abstract: The electron field emission properties of carbon nanotubes (CNTs) formed by catalyst-assisted solid-state growth process from nanodiamond films were investigated. The SEM and Raman spectroscopy examinations show that the nanodiamond films were converted into carbon nanotubes when they were coated with a thin layer of Fe, Co or Ni films (∼1.0 nm) and then postannealed at high enough temperature (∼1000 °C). Precoating a catalytic metal layer is of prime importance to induce the phase transformation process. The field emission properties of nanodiamond films have been dramatically improved. The turn on field was reduced from EDia=36–44 V/μm for nanodiamond films to ECNTs=11 to 16 V/μm, whereas the electron field emission capacity was increased from Je(Dia)=110 μA/cm2 for nanodiamond films to Je(CNTS)=30 mA/cm2 after the conversion process. The electron field emission of the solid-state converted CNTs thus obtained are superior to those of the CNTs grown from CVD process due to the suppression of carbon soots formation.
    Relation: Diamond and Related Materials 14(3-7), pp.825-830
    DOI: 10.1016/j.diamond.2004.10.022
    Appears in Collections:[物理學系暨研究所] 期刊論文

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