Effect of gas pressure on electron field emission from carbon nanotube forests

Tsakadze, Z.L., Ostrikov, K., Sow, C.H., Mhaisalkar, S.G., & Boey, Y.C. (2010) Effect of gas pressure on electron field emission from carbon nanotube forests. Journal of Nanoscience and Nanotechnology, 10(10), pp. 6575-6579.

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This article quantifies the effect of the operating pressure of the H 2 + C 2H 4 gas mixture on the current density and threshold voltage of the electron emission from dense forests of multiwalled carbon nanotubes synthesized using thermal catalytic Chemical Vapor Deposition under near atmospheric pressure process conditions. The results suggest that in the pressure range of interest 400-700 Torr the field emission properties can be substantially improved by operating the process at lower gas pressures when the nanostructure aspect ratios are higher. The obtained threshold voltage ∼1.75 V/μm and the emission current densities ∼10 mA/cm 2 offer competitive advantages compared with the results reported by other authors. Copyright

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ID Code: 73794
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Carbon nanotubes, Chemical vapor deposition (CVD), Electron field emission
DOI: 10.1166/jnn.2010.2524
ISSN: 1533-4880
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 11 Jul 2014 01:37
Last Modified: 14 Jul 2014 00:01

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