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Field Emission Properties of a Three-Dimensional Network of Single-Walled Carbon Nanotubes Inside Pores of Porous Silicon

Title
Field Emission Properties of a Three-Dimensional Network of Single-Walled Carbon Nanotubes Inside Pores of Porous Silicon
Author
이휘건
Keywords
Porous Silicon; Single-Walled Carbon Nanotube; Field Emission; Stability
Issue Date
2014-08
Publisher
American Scientific Publishers
Citation
Journal of Nanoscience and Nanotechnology, 2014, 14(8), P.6221-6225
Abstract
We report characteristic field emission (FE) properties of single-walled carbon nanotubes (SWCNTs) synthesized inside the pores as well as on the top surface of a porous silicon (PS) substrate. Turn-on fields and emission current densities were measured and compared with those of other types of SWCNTs in similar environments. Investigation of the FE properties of SWCNTs synthesized inside the pores of a PS substrate revealed a low turn-on field of approximately 2.25 V/mu m at 10 mu A/cm(2) and a high field-enhancement factor (6182) compared with other samples. A life-time stability test was performed by monitoring the current density before and after repeated exposure to O-2, suggesting that the pore channel can effectively prevent O-2(+) ion etching from destroying SWCNTs within the pores of the PS layer.
URI
http://www.ingentaconnect.com/content/asp/jnn/2014/00000014/00000008/art00116http://hdl.handle.net/20.500.11754/54254
ISSN
1533-4880; 1533-4899
DOI
10.1166/jnn.2014.8321
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > CHEMISTRY(화학과) > Articles
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