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High current field emission from carbon nanotube films grown using electroplated Ni catalyst

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4 Author(s)
Park, Kyung Ho ; Dept. of Molecular Sci. & Technol., Ajou Univ., Suwon, South Korea ; Jong Hyuk Yim ; Lee, Soonil ; Koh, Ken Ha

Carbon nanotube (CNT) films were grown via hot-filament chemical-vapor deposition on silicon substrate covered with electroplated nickel catalyst. This resulted in less crystalline and defect rich carbon nanofibers (CNF). Scanning electron microscopy and FT-Raman spectra of the CNF films showed that a high density of CNFs was formed and that it was constituted of well-ordered graphene layer. High current density of 170 mA/cm2 at 7.3 V/μm was obtained from field emission. Emission-stability test carried out at the current density of 20 mA/cm2 showed stable emission currents with fluctuation of only 3.4% over 2 hours.

Published in:

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

Date of Conference:

11-16 July 2004