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Title: Fabrication of vertically aligned carbon nanotubes patterns by chemical vapor deposition for field emitters
Authors: Zhang, W.D.
Thong, J.T.L. 
Tjiu, W.C.
Gan, L.M.
Keywords: Carbon nanotubes
Chemical vapor deposition
Field emission
Issue Date: Sep-2002
Citation: Zhang, W.D., Thong, J.T.L., Tjiu, W.C., Gan, L.M. (2002-09). Fabrication of vertically aligned carbon nanotubes patterns by chemical vapor deposition for field emitters. Diamond and Related Materials 11 (9) : 1638-1642. ScholarBank@NUS Repository.
Abstract: A simple and reliable method has been developed for the controlled growth of well-aligned carbon nanotubes patterns with different sizes and shapes on a silicon substrate. A patterned film of sputtered cobalt on the silicon was prepared by a lift-off process, and the carbon nanotubes were grown via chemical vapor deposition using ethylenediamine as a precursor. The carbon nanotubes are vertically aligned with high density within the micro patterns. The diameter of carbon nanotubes is determined by the thickness of cobalt film while the length of the nanotubes can be controlled by varying the reaction time. The bamboo-like multi-walled carbon nanotubes have been observed by high-resolution transmission electron microscopy. The micro-Raman spectrum further confirmed the graphitic structure of the nanotubes. The potential application of the carbon nanotubes to flat-panel displays is demonstrated by the ability to provide stable high field-emission current densities. © 2002 Elsevier Science B.V. All rights reserved.
Source Title: Diamond and Related Materials
ISSN: 09259635
DOI: 10.1016/S0925-9635(02)00110-3
Appears in Collections:Staff Publications

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