Field emission from dense, sparse, and patterned arrays of carbon nanofibers

K. B K Teo, Manish Chhowalla, G. A J Amaratunga, W. I. Milne, G. Pirio, P. Legagneux, F. Wyczisk, D. Pribat, D. G. Hasko

Research output: Contribution to journalArticle

266 Citations (Scopus)

Abstract

We compare the field emission characteristics of dense (10 9nanofibers/cm2), sparse (107nanofibers/cm 2), and patterned arrays (106nanofibers/cm2) of vertically aligned carbon nanofibers on silicon substrates. The carbon nanofibers were prepared using plasma-enhanced chemical vapor deposition of acetylene and ammonia gases in the presence of a nickel catalyst. We demonstrate how the density of carbon nanofibers can be varied by reducing the deposition yield through nickel interaction with a diffusion layer or by direct lithographic patterning of the nickel catalyst to precisely position each nanofiber. The patterned array of individual vertically aligned nanofibers had the most desirable field emission characteristics, highest apparent field enhancement factor, and emission site density.

Original languageEnglish
Pages (from-to)2011-2013
Number of pages3
JournalApplied Physics Letters
Volume80
Issue number11
DOIs
Publication statusPublished - Mar 18 2002

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field emission
nickel
carbon
catalysts
acetylene
ammonia
vapor deposition
augmentation
silicon
gases
interactions

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Teo, K. B. K., Chhowalla, M., Amaratunga, G. A. J., Milne, W. I., Pirio, G., Legagneux, P., ... Hasko, D. G. (2002). Field emission from dense, sparse, and patterned arrays of carbon nanofibers. Applied Physics Letters, 80(11), 2011-2013. https://doi.org/10.1063/1.1461868

Field emission from dense, sparse, and patterned arrays of carbon nanofibers. / Teo, K. B K; Chhowalla, Manish; Amaratunga, G. A J; Milne, W. I.; Pirio, G.; Legagneux, P.; Wyczisk, F.; Pribat, D.; Hasko, D. G.

In: Applied Physics Letters, Vol. 80, No. 11, 18.03.2002, p. 2011-2013.

Research output: Contribution to journalArticle

Teo, KBK, Chhowalla, M, Amaratunga, GAJ, Milne, WI, Pirio, G, Legagneux, P, Wyczisk, F, Pribat, D & Hasko, DG 2002, 'Field emission from dense, sparse, and patterned arrays of carbon nanofibers', Applied Physics Letters, vol. 80, no. 11, pp. 2011-2013. https://doi.org/10.1063/1.1461868
Teo KBK, Chhowalla M, Amaratunga GAJ, Milne WI, Pirio G, Legagneux P et al. Field emission from dense, sparse, and patterned arrays of carbon nanofibers. Applied Physics Letters. 2002 Mar 18;80(11):2011-2013. https://doi.org/10.1063/1.1461868
Teo, K. B K ; Chhowalla, Manish ; Amaratunga, G. A J ; Milne, W. I. ; Pirio, G. ; Legagneux, P. ; Wyczisk, F. ; Pribat, D. ; Hasko, D. G. / Field emission from dense, sparse, and patterned arrays of carbon nanofibers. In: Applied Physics Letters. 2002 ; Vol. 80, No. 11. pp. 2011-2013.
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