Effects of Fe Film Thickness and Pretreatments on the Growth Behaviours of Carbon Nanotubes on Fe-doped (001) Si Substrates

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概要

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• Transmission electron microscopy (TEM), atomic force microscopy (AEM) and scanning electron microscopy (SEM) are used to investigate the effects of Fe film thickness and pretreatment conditions on the growth behaviours of carbon nanotubes on the Fe-deposited Si (001) substrates. The Fe films are deposited for 20 s-20 mm by pulse-laser deposition. SEM results show that the growth characteristics of carbon nanotubes are strongly dependent on the Fe film thickness and pretreatment conditions, It is shown that the pretreatments at 800℃ (and also chemical vapour deposition growth) cause the continuous Fe films to be broken up into nanoparticles (8-50nm across) and discontinuous islands (100 nm-1.1 μm in size). It is also shown that the Fe nanoparticles are essentially required for the formation of aligned carbon nanotubes. Furthermore, for the Ar-pretreated sample, a carbonaceous layer is formed near the surface region. TEM results show direct evidence that a base growth mode is responsible for the growth of carbon nanotubes in the present work. Based on TEM and SEM results, the pretreatment atmosphere dependence of the growth behaviours of carbon nanotubes is discussed.

• 社団法人応用物理学会の論文
• 2002-07-15

著者

• CHOI Chel-Jong

  Department of BIN Fusion Technology, Chonbuk National University

• Choi Chel-jong

  Department Of Bin Fusion Technology Chonbuk National University

• Seong Tae-yeon

  Department Of Materials Science And Engineering Kwangju Institute Of Science And Technology (k-jist)

• Seong Tae-yeon

  Department Of Materials Science And Engineering Kwangju Institute Of Science And Technology (k-jjst)

• Choi Chel-jong

  Department Of Materials Science And Engineering Kwangju Institute Of Science And Technology (k-jjst)

• Sohn Jung

  Department Of Materials Science And Engineering Kwangju Institute Of Science And Technology (k-jjst)

• Seong Tae-yeon

  Department Of Materials Science And Engineering And Centre For Electronic Materials Research Kwangju

• LEE Seonghoon

  Department of Materials Science and Engineering Kwangju Institute of Science and Technology (K-JJST)

• SOHN Jung

  Department of Engineering Science, University of Oxford

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