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Proceedings Paper

Field electron emitters from carbon nanotube films on diamond films
Author(s): Wan Lu Wang; K. J. Liao; Y.T. Wang; J. W. Lu; P. Xiao
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Paper Abstract

In this paper, the field electron emission from carbon nanotubes on oriented growth diamond films was investigated. Carbon nanotubes and orientation growth diamond films were prepared by hot filament and microwave plasma CVD. The samples obtained were characterized by scanning electron microscopy and Raman spectroscopy. The field emission experiments were performed in an ion-pumped vacuum chamber for different samples. The experimental results have shown that the field emission properties of carbon nanotubes films/diamond films structure have greatly been improved. A turn-on field of 0.9 V/μm and a maximum current of 500μA at 1.5/μm were observed. A lower turn-on field of 0.7V/μm was achieved after chemical treatment. This improvement may be attributed to the tiny tip shape of the carbon nanotubes on diamond films, which provided an additional local increase in electric field at the tip end.

Paper Details

Date Published: 12 January 2005
PDF: 5 pages
Proc. SPIE 5632, Light-Emitting Diode Materials and Devices, (12 January 2005); doi: 10.1117/12.570761
Show Author Affiliations
Wan Lu Wang, Chongqing Univ. (China)
K. J. Liao, Chongqing Univ. (China)
Y.T. Wang, Chongqing Univ. (China)
J. W. Lu, Chongqing Univ. (China)
P. Xiao, Chongqing Univ. (China)


Published in SPIE Proceedings Vol. 5632:
Light-Emitting Diode Materials and Devices
Gang Yu; Chuangtian Chen; Changhee Lee, Editor(s)

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