Growth-temperature induced metal-insulator transition in bamboo-shaped multiwalled carbon nanotubes

J. W. Jang, D. K. Lee, Cheol Eui Lee, T. J. Lee, Cheol Jin Lee, S. J. Noh

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Temperature-dependent resistivity measurements were carried out on bamboo-shaped multiwalled carbon nanotubes (CNT) grown on cobalt-catalyst-deposited A12O3/Ti substrates by a thermal chemical vapor deposition. The resistivity decreased with increasing growth temperature, and a reduced activation energy analysis showed that the CNT moved from the critical regime to the metallic regime with increasing growth temperature. The improved electrical conductivity with increasing growth temperature is attributed to the improved crystallinity and the increased diameters of the CNT.

Original languageEnglish
Pages (from-to)147-150
Number of pages4
JournalSolid State Communications
Volume124
Issue number4
DOIs
Publication statusPublished - 2002 Oct 1

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Keywords

  • A. Nanostructures
  • B. Thermal chemical vapor deposition
  • C. Scanning and transmission electron microscopy
  • D. Electronic transport

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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