Low-Threshold Field Emission from Carbon Structures

— The surface of graphene-like structures placed in an electric field with a strength of 1−10 V/μm is found to undergo considerable deformation. This effect is observed in both a direct field (emission current is present) and a reverse field (emission current is absent). The deformation of the surfa...

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Published inSurface investigation, x-ray, synchrotron and neutron techniques Vol. 13; no. 5; pp. 814 - 824
Main Authors Fursey, G. N., Polyakov, M. A., Bagraev, N. T., Zakirov, I. I., Nashchekin, A. V., Bocharov, V. N.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.09.2019
Springer Nature B.V
Subjects
Chemistry and Materials Science
Deformation effects
Electric field strength
Electron emission
Field emission
Graphene
Materials Science
Surfaces and Interfaces
Thin Films
negative
low-threshold field emission
carbon nanotubes
graphene-like structures
carbon structures
high-intensity emission
centers
field-induced graphite exfoliation
highly oriented pyrolytic graphite
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Summary:— The surface of graphene-like structures placed in an electric field with a strength of 1−10 V/μm is found to undergo considerable deformation. This effect is observed in both a direct field (emission current is present) and a reverse field (emission current is absent). The deformation of the surface of cathodes facilitates low-threshold electron emission. The qualitative model proposed here to explain the effect of low-energy electron emission is based on the idea of surface reconstruction and the formation of centers with negative correlation energies (negative- U centers).
ISSN:1027-4510
1819-7094
DOI:10.1134/S1027451019050057