Nano-carbon materials for cold cathode applications

A. N. ObraztsovCorresponding Author Contact Information, E-mail The Corresponding Author, Al. A. Zakhidov, A. P. Volkov and D. A. Lyashenko

Department of Physics, Moscow State University, Leninskie gory 1-2, Moscow 119992, Russia

Available online 14 June 2003.


Nano-carbon thin film materials were obtained by chemical vapor deposition in dc discharge activated hydrogen–methane gas mixture. Film structure, surface morphology and phase composition was studied by Raman, electron microscopy and electron spectroscopy methods. A highly efficient cold electron emission was found for the films composed from well graphitized nano-structures including carbon nanotubes and graphite nano-crystallites. Electron emission tests and analysis exhibit non-classical behavior of the nano-carbon cold cathodes. The statistical analysis of the cold emission show normal distribution of parameters of separate emission centers with narrow standard deviation. The possible mechanism of the cold emission is discussed.

Author Keywords: Field emission; Carbon; Nanostructures; CVD

PACS classification codes: 79.70.+q; 79.60.Jr; 73.61.Wp

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