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Interface study of metal electrode and semiconducting carbon nanotubes: effects of electrode atomic species

Tarakeshwar, P. / Palacios, Juan Jose / Kim, Dae M.

Presented herein are the first principle calculations of the transport properties of semiconducting carbon nanotubes (CNT#x2019;s), coupled to metallic electrodes. Our preliminary results indicate that for simple contact geometries, the Fermi level lies roughly in the middle of the gap for palladium-contacted CNT’s, while it is pinned at the bottom of the conduction band for goldcontacted CNT#x2019;s. This is interesting because both of these metals possess similar work functions. Additionally the charge transfer at the interface is larger in palladium contacted CNT, compared with gold contacted case.

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Interface study of metal electrode and semiconducting carbon nanotubes: effects of electrode atomic species

Tarakeshwar, P. / Palacios, Juan Jose / Kim, Dae M.

Presented herein are the first principle calculations of the transport properties of semiconducting carbon nanotubes (CNT#x2019;s), coupled to metallic electrodes. Our preliminary results indicate that for simple contact geometries, the Fermi level lies roughly in the middle of the gap for palladium-contacted CNT’s, while it is pinned at the bottom of the conduction band for goldcontacted CNT#x2019;s. This is interesting because both of these metals possess similar work functions. Additionally the charge transfer at the interface is larger in palladium contacted CNT, compared with gold contacted case.

Interface study of metal electrode and semiconducting carbon nanotubes: effects of electrode atomic species

Tarakeshwar, P. / Palacios, Juan Jose / Kim, Dae M.

Presented herein are the first principle calculations of the transport properties of semiconducting carbon nanotubes (CNT#x2019;s), coupled to metallic electrodes. Our preliminary results indicate that for simple contact geometries, the Fermi level lies roughly in the middle of the gap for palladium-contacted CNT’s, while it is pinned at the bottom of the conduction band for goldcontacted CNT#x2019;s. This is interesting because both of these metals possess similar work functions. Additionally the charge transfer at the interface is larger in palladium contacted CNT, compared with gold contacted case.

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Title:

Interface study of metal electrode and semiconducting carbon nanotubes: effects of electrode atomic species

Contributors:

Tarakeshwar, P. (author) / Palacios, Juan Jose (author) / Kim, Dae M. (author)

Published in:

2006 IEEE Nanotechnology Materials and Devices Conference ; 1 ; 566-567

Publication date:

2006-10-01

Size:

405669 byte

ISBN:

978-1-4244-0541-1 , 978-1-4244-0540-4

DOI:

https://doi.org/10.1109/NMDC.2006.4388905

Type of media:

Conference paper

Type of material:

Electronic Resource

Language:

English

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