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Fabrication and characterization of high current density carbon nanotube cold cathodes

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4 Author(s)
Chunhui Zhu ; Dept. of Electron. Eng., Southeast Univ., Nanjing, China ; Lou, Chaogang ; Wei Lei ; Xiaobing Zhang

In this paper, we report a recent experimental observation of high field-emission current density (6.5 A/cm2) from carbon nanotube emitters. Our research shows that it is beneficial for getting the high current density in our experiment that Au film was deposited onto Si substrate before evaporating a Ni catalyst dot onto the substrate. We compared the field emission characteristics of CNTs cathodes grown on the Ni films with different thickness of 50, 70, 100 nm.

Published in:

Vacuum Electron Sources Conference, 2004. Proceedings. IVESC 2004. The 5th International

Date of Conference:

6-10 Sept. 2004