Synchrotron X-ray photoelectron spectroscopy and field emission of double-walled carbon nanotubes - Dependence on growth temperature

Shin Young Kim, Jin Young Lee, Jeunghee Park, Chan Jun Park, Cheol Jin Lee, Hyun Joon Shin

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Double-walled carbon nanotubes (DWCNTs) were synthesized by using thermal chemical vapor deposition on MgO-supported Fe-Mo catalysts, in the temperature range 800-1000 °C. Outer diameters were 1.5-2 nm at all growth temperatures. As growth temperature was increased, C1s peaks of X-ray photoelectron spectroscopy became broader and valence band intensity increased due to stronger van der Waals interaction between DWCNTs induced by higher crystallinities. Field emission from the as-grown DWCNTs exhibited a large current density enhancement with increasing growth temperature.

Original languageEnglish
Pages (from-to)271-276
Number of pages6
JournalChemical Physics Letters
Volume420
Issue number4-6
DOIs
Publication statusPublished - 2006 Mar 21

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces
  • Condensed Matter Physics

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