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 | Nanotech 2002 Vol. 2
Technical Proceedings of the 2002 International Conference on Computational Nanoscience and Nanotechnology
Chapter 12: Molecular and Nanoelectronics |
| | Field Emission of Carbon Nanotubes and the Electronic Structure of Fullerenes Encapsulated in Carbon Nanotubes | | Authors: | Y. Cho, G. Kim, S. Lee and J. Ihm | | Affilation: | Seoul National University, Korea | | Pages: | 291 - 294 | | Keywords: | field emission, carbon nanotube, carbon nanopeapod | | Abstract: | We have performed first-principles calculations on the field emission of carbon nanotubes. The three-dimensional character of the current source, as well as the effect of the external electric field, are explicitly considered. The calculated electron-leakage by solving the time-dependent Schrödinger equation is quite linear in short time scale, giving the tunneling rate from the emitter to the vacuum. The total current fits the Fowler-Nordheim formula reasonably well. The magnitude of the current associated with each electronic state is found to exponentially depend on the energy level. We have also performed first-principles pseudopotential calculations for the electronic structure of fullerenes such asC82 encapsulated in single-walled carbon nanotubes. We find a charge transfer occurs between the carbon nanotube (CNT) and C82, and states are produced by the hybridizaion of C82 and the CNT. |  | View paper | | ISBN: | 0-9708275-6-3 |
| Pages: | 504 |
| Hardcopy: | $100.00 |
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