Unusual transport characteristics of nitrogen-doped single-walled carbon nanotubesopen access
- Authors
- Min, Sep; Bae, Eun Ju; Kim, Un Jeong; Lee, Eun Hong; Park, Noejung; Hwang, Cheol Seong; Park, Wanjun
- Issue Date
- Jul-2008
- Publisher
- AMER INST PHYSICS
- Citation
- APPLIED PHYSICS LETTERS, v.93, no.4, pp.1 - 3
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED PHYSICS LETTERS
- Volume
- 93
- Number
- 4
- Start Page
- 1
- End Page
- 3
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/171989
- DOI
- 10.1063/1.2965805
- ISSN
- 0003-6951
- 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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