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Park, Noejung
Computational Physics & Electronic Structure Lab
Research Interests
  • Electronic structure calculation, computational physics, computational material science

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Unusual transport characteristics of nitrogen-doped single-walled carbon nanotubes

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Title
Unusual transport characteristics of nitrogen-doped single-walled carbon nanotubes
Author
Min, SepBae, Eun JuKim, Un JeongLee, Eun HongPark, NoejungHwang, Cheol SeongPark, Wanjun
Keywords
FIELD-EFFECT TRANSISTORS; ELECTRONIC-PROPERTIES; TUBULES
Issue Date
2008-07
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.93, no.4, pp. -
Abstract
Electrical transport characteristics of nitrogen-doped single-walled carbon nanotubes (N-SWCNTs), in which the nitrogen dopant is believed to form a pyridinelike bonding configuration, are studied with the field effect transistor operations. Contrary to the expectation that the nitrogen atoms may induce a n -type doping, the electrical transports through our N-SWCNTs are either ambipolar in vacuum or p -type in air. Through the first-principles electronic structure calculations, we show that the nitrogen dopant indeed favors the pyridinelike configuration and the Fermi level of the pyridinelike N-SWCNT is almost at the intrinsic level.
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DOI
10.1063/1.2965805
ISSN
0003-6951
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PHY_Journal Papers
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