Field emission from nanotube bundle emitters at low fields

Q. H. Wang, T. D. Corrigan, J. Y. Dai, Robert P. H. Chang, A. R. Krauss

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Abstract

The fabrication of nanotube field emitters with an onset field as low as 0.8 V/μm is described and the low-field electron emission mechanism is discussed. These emitters are made using nanotube cathode deposit with the addition of epoxy resin. The preferred orientation of nanotubes in nanotube bundles of the deposit is preserved. The nanotube tips are sharpened by exposing the nanotube bundle surface to a microwave oxygen plasma. The local-field enhancement factor is estimated to be 8000 by using the Fowler-Nordheim equation. The low onset field is attributed to the well-distributed, highly orientated sharp tips at the sample surface.

Original languageEnglish
Pages (from-to)3308-3310
Number of pages3
JournalApplied Physics Letters
Volume70
Issue number24
Publication statusPublished - Jun 16 1997

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Wang, Q. H., Corrigan, T. D., Dai, J. Y., Chang, R. P. H., & Krauss, A. R. (1997). Field emission from nanotube bundle emitters at low fields. Applied Physics Letters, 70(24), 3308-3310.