Enhancement mechanism of field electron emission properties in hybrid carbon nanotubes with tree- and wing-like features

Journal Article · Tue Dec 15 00:00:00 EST 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.10.005· OSTI ID:21372437

Yang, G M ^[1]; Xu, Q ^[2]; Li, S ^[3]

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1. Department of Materials Science, State Key Laboratory of Superhard Materials, and Key Laboratory of Automobile Materials of MOE, Jilin University, Changchun 130012 (China)
2. Changchun Institute of Technology, Changchun 130021 (China)
3. School of Materials Science and Engineering, The University of New South Wales, NSW 2052 (Australia)

In this work, the tree-like carbon nanotubes (CNTs) with branches of different diameters and the wing-like CNTs with graphitic-sheets of different densities were synthesized by using plasma enhanced chemical vapor deposition. The nanostructures of the as-prepared hybrid carbon materials were characterized by scanning electron microscopy and transmission electron microscopy. The structural dependence of field electron emission (FEE) property was also investigated. It is found that both of the tree- and wing-like CNTs exhibit a lower turn-on field and higher emission current density than the pristine CNTs, which can be ascribed to the effects of branch size, crystal orientation, and graphitic-sheet density. - Graphical abstract: Tree-like carbon nanotubes (CNTs) with branches and the wing-like CNTs with graphitic-sheets were synthesized by using plasma enhanced chemical vapor deposition. The structural dependence of field electron emission property was also investigated.

• OSTI ID: 21372437
• Journal Information: Journal of Solid State Chemistry, Vol. 182, Issue 12; Other Information: DOI: 10.1016/j.jssc.2009.10.005; PII: S0022-4596(09)00486-1; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CHEMICAL VAPOR DEPOSITION
DENSITY
ELECTRON EMISSION
GRAPHITE
NANOTUBES
SCANNING ELECTRON MICROSCOPY
SHEETS
TRANSMISSION ELECTRON MICROSCOPY
CARBON
CHEMICAL COATING
DEPOSITION
ELECTRON MICROSCOPY
ELEMENTS
EMISSION
MICROSCOPY
MINERALS
NANOSTRUCTURES
NONMETALS
PHYSICAL PROPERTIES
SURFACE COATING