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Structural determination of single-walled carbon nanotube with an intramolecular junction and its electrical transport property.
- Source :
-
Carbon . Nov2018, Vol. 139, p472-476. 5p. - Publication Year :
- 2018
-
Abstract
- Abstract By utilizing a novel design of an electronic device with microfabricated through-etched slits for transmission electron microscopy (TEM), single-walled carbon nanotubes (SWNTs) suspended over two metal electrodes were successfully characterized. A semiconducting-semiconducting intramolecular junction (IMJ) was found from a change in chirality along the tube. Interestingly non-linear current-voltage characteristic was found despite almost negligible difference in the band-gap energy (13 meV). The non-linear electrical transport property can be caused by asymmetric defect states positioned in the band-gap of two semiconducting tubes, which make one as donor (similar to a p-type semiconductor) and the other as acceptor (similar to n-type semiconductor). The strain by deformation along the tube can also cause the electrical non-linearity. Graphical abstract Image 1 [ABSTRACT FROM AUTHOR]
- Subjects :
- *CARBON nanotubes
*SEMICONDUCTORS
*BAND gaps
*NANOTUBES
*CRYSTALS
Subjects
Details
- Language :
- English
- ISSN :
- 00086223
- Volume :
- 139
- Database :
- Academic Search Index
- Journal :
- Carbon
- Publication Type :
- Academic Journal
- Accession number :
- 132097329
- Full Text :
- https://doi.org/10.1016/j.carbon.2018.06.075