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Proceedings Paper

Emission performance of carbon nanotubes
Author(s): Ning Shi; Defu Pi
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Paper Abstract

Due to their high aspect ratios and small tip radii of curvature, carbon nanotubes may be suitable for electron field emission. Great attention has been paid to field emission of nanotubes since their discovery. In this paper we analyze the emission performance of a single close nanotube and the carbon nanotube had been regard as continuous cylinder with a dome-shape cap. The electron field emission of the single close nanotube was obtained and examined in triode configuration. The emission field of nanotube is simulated by the finite element method on the basis of electrostatic and the field emission theory of vacuum microelectronics, and the emission current is calculated from the Fowler-Nordheim equation. Not only the emission current of the nanotube is calculated for different geometrical parameters of nanotubes and for different applied voltage , but also the electron trajectories are demonstrated in this paper. From the simulation results, the influence of the geometrical shape of the nanotube on the emission performance is evaluated and discussed here. The simulated results can provide useful information in the fabrication of a nanotube array for field emission display panels.

Paper Details

Date Published: 15 October 2001
PDF: 6 pages
Proc. SPIE 4600, Advances in Microelectronic Device Technology, (15 October 2001); doi: 10.1117/12.444676
Show Author Affiliations
Ning Shi, Nanjing Univ. of Science and Technology (China)
Defu Pi, Nanjing Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 4600:
Advances in Microelectronic Device Technology

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