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

Author

Park, Kyung Ho ; Yim, Jong Hyuk ; Lee, Soonil ; Koh, Ken Ha

Author_Institution

Dept. of Molecular Sci. & Technol., Ajou Univ., Suwon, South Korea

fYear

2004

fDate

11-16 July 2004

Firstpage

212

Lastpage

213

Abstract

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.

Keywords

Fourier transform spectra; Raman spectra; carbon fibres; carbon nanotubes; catalysts; chemical vapour deposition; current density; electron field emission; electroplated coatings; scanning electron microscopy; thin films; C; FT-Raman spectra; carbon nanofiber film; carbon nanotube films; current density; electroplated nickel catalyst; emission current fluctuation; emission stability; field emission; graphene layer; hot-filament chemical vapor deposition; scanning electron microscopy; Carbon dioxide; Carbon nanotubes; Chemicals; Crystallization; Current density; Nickel; Scanning electron microscopy; Semiconductor films; Silicon; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

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

Print_ISBN

0-7803-8397-4

Type

conf

DOI

10.1109/IVNC.2004.1354978

Filename

1354978