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Field emission properties from double walled carbon nanotubes produced by a catalytic CVD

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6 Author(s)
T. J. Lee ; Dept. of Nanotechnology, Han Yang Univ., Seoul, South Korea ; S. K. Choi ; S. H. Seo ; S. H. Lee
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High quality DWNTs (double-walled carbon nanotubes) was produced by a catalytic CVD. The field emission was measured using parallel-plate geometry with a gap distance of 270 ∼ 370 μm under a 2 × 10-7 Torr. The turn-on electric field of DWNTs was about 1.7 ∼ 3.5 V/μm at ∼ 1.0 × 10-7 mA/cm2 and the current density of DWNTs was about ∼ 20mA/cm2 at the applied electric field of ∼ 8V/μm. The lifetime indicated good stability for 20 hours when constant DC voltage applied at high current density of ∼ 1.0 × 10-3 A/cm2.

Published in:

Vacuum Nanoelectronics Conference, 2004. IVNC 2004. Technical Digest of the 17th International

Date of Conference:

11-16 July 2004