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Investigation of Nano-Structured White Carbon Films

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Abstract:

White carbon films with sp1-hybridization of carbon were synthesized by microwave plasma chemical vapor deposition. The surface morphology of the deposited film, which consisted of nanograins and nanofibers, was observed by scanning electron microscope. The x-ray diffraction peak at 2θ=21.69o corresponds to the (110) facet of β modifications of white carbon material. The peak position at 283.2 eV in x-ray photoelectron spectrum represents binding energy of C1s core level of sp1-hybridization of carbon. Field electron emission properties of the film were tested by using a diode structure in a vacuum chamber. The turn-on field of 2.3V/μm and the emission current density of 360μA/cm2 at electric field of 7V/μm were obtained.

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Nanotechnology and Advanced Materials View Preview

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Periodical:

Advanced Materials Research (Volume 486)

Pages:

44-46

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.486.44

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Online since:

March 2012

Authors:

Lan Zhang, Hui Zhong Ma, Ning Yao, Bing Lin Zhang

Keywords:

Carbyne, Field Electron Emission, Microwave Plasma Chemical Vapor Deposition, White Carbon

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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