Electronic structure and field emission of multiwalled carbon nanotubes depending on growth temperature

Sang Won Yoon, Shin Young Kim, Jeunghee Park, Chan Jun Park, Cheol Jin Lee

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The electronic structure of multiwalled carbon nanotubes (CNTs) has been investigated, depending on the growth temperature, using synchrotron X-ray photoelectron spectroscopy (XPS) and field emission measurements. The vertically aligned CNTs are grown via pyrolysis of ferrocene and acetylene in a broad temperature range 600-1000°C. The CNTs have a cylindrical structure with a uniform diameter of 20 nm. As growth temperature increases, due to an improved crystallinity of the graphitic sheets, the width of the XPS C 1s peak becomes narrower and the intensity of the valence band increases. Field emission from the as-grown CNTs exhibits a large enhancement of current density with growth temperature, strongly correlated with the electronic structure revealed by XPS.

Original languageEnglish
Pages (from-to)20403-20406
Number of pages4
JournalJournal of Physical Chemistry B
Volume109
Issue number43
DOIs
Publication statusPublished - 2005 Nov 3

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Carbon Nanotubes
Multiwalled carbon nanotubes (MWCN)
Growth temperature
Field emission
Electronic structure
field emission
Carbon nanotubes
X ray photoelectron spectroscopy
carbon nanotubes
electronic structure
photoelectron spectroscopy
Acetylene
Valence bands
Synchrotrons
x rays
temperature
Pyrolysis
Current density
acetylene
pyrolysis

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Electronic structure and field emission of multiwalled carbon nanotubes depending on growth temperature. / Yoon, Sang Won; Kim, Shin Young; Park, Jeunghee; Park, Chan Jun; Lee, Cheol Jin.

In: Journal of Physical Chemistry B, Vol. 109, No. 43, 03.11.2005, p. 20403-20406.

Research output: Contribution to journalArticle

Yoon, Sang Won ; Kim, Shin Young ; Park, Jeunghee ; Park, Chan Jun ; Lee, Cheol Jin. / Electronic structure and field emission of multiwalled carbon nanotubes depending on growth temperature. In: Journal of Physical Chemistry B. 2005 ; Vol. 109, No. 43. pp. 20403-20406.
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