Synthesis of bamboo-shaped multiwalled carbon nanotubes using thermal chemical vapor deposition

Cheol Jin Lee, Jung Hoon Park, Jeunghee Park

Research output: Contribution to journalArticle

110 Citations (Scopus)

Abstract

The vertically aligned multiwalled carbon nanotubes (CNT) are synthesized in high density on a large area of cobalt deposited silicon oxide substrate, by thermal chemical vapor deposition using C2H2 gas, at 950°C. The diameter of CNTs is distributed in the range of 80-120 nm and the length is about 20 μm. High-resolution transmission electron microscopy analysis reveals that the multiwalled CNTs have the crystalline graphite sheets and the bamboo structure that the tube consists of hollow compartments separated with graphite layers. A possible growth mechanism is suggested to explain the structure of CNTs. The emission current density is 1.1 mA cm-2 at 4.5 V μm-1, showing the Fowler-Nordheim behavior.

Original languageEnglish
Pages (from-to)560-565
Number of pages6
JournalChemical Physics Letters
Volume323
Issue number5-6
Publication statusPublished - 2000 Jun 23
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

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