Diameter modulation by fast temperature control in laser-assisted chemical vapor deposition of single-walled carbon nanotubes

M. Mahjouri-Samani, Y. S. Zhou, W. Xiong, Y. Gao, M. Mitchell, L. Jiang, Y. F. Lu

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

Diameter modulation by fast temperature control in laser-assisted chemical vapor deposition (LCVD) was successfully achieved to tune the diameters of single-walled carbon nanotubes (SWNTs) in different segments. Due to the inverse relationship between the SWNT diameter and the growth temperature, SWNTs with ascending diameters were obtained by reducing the LCVD temperature from high to low. The diameter-modulated SWNTs were integrated in electrodes to form field-effect transistors (FETs) and to investigate their electronic transport properties. The SWNTs in the FET structures have electronic properties similar to Schottky diodes, indicating clear evidence of different bandgap structures at the two ends of the SWNTs. Raman spectroscopy, transmission electron microscopy, and electronic transport characteristics were studied to investigate the influence of temperature variation on the structural and electronic characteristics of the SWNTs.

Original languageEnglish (US)
Article number395601
JournalNanotechnology
Volume21
Issue number39
DOIs
StatePublished - Oct 1 2010

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Diameter modulation by fast temperature control in laser-assisted chemical vapor deposition of single-walled carbon nanotubes'. Together they form a unique fingerprint.

  • Cite this