Liang SD, Chen L. Generalized Fowler-Nordheim theory of field emission of carbon nanotubes.
PHYSICAL REVIEW LETTERS 2008;
101:027602. [PMID:
18764229 DOI:
10.1103/physrevlett.101.027602]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2007] [Indexed: 05/26/2023]
Abstract
Based on the low-energy band structure of carbon nanotubes (CNs), we develop a generalized Fowler-Nordheim theory of the CN field emission, in which the behavior of the current-voltage (I-V) characteristics depends on the electric field and the diameter of the CNs. This formalism reveals the key differences of field emission between conventional bulk metallic emitters and low-dimensional emitters and gives a clear physical understanding of the non-Fowler-Nordheim feature of the I-V characteristics of the CN field emission.
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