Graphitic electrical contacts to metallic single-walled carbon nanotubes using Pt electrodes
| Autor: | Tatyana Sheps, V. Ara Apkarian, Edward T. Branigan, Steven R. Hunt, Philip G. Collins, John C. Hemminger, Alexander Kane, Ming H. Cheng |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
business.industry Graphene Mechanical Engineering Contact resistance chemistry.chemical_element Bioengineering Nanotechnology General Chemistry Carbon nanotube Condensed Matter Physics Electrical contacts law.invention Condensed Matter::Materials Science chemistry law Electrode Optoelectronics General Materials Science Field-effect transistor Graphite business Carbon |
| Zdroj: | Nano letters. 9(10) |
| ISSN: | 1530-6992 |
| Popis: | We investigate electronic devices consisting of individual, metallic, single-walled carbon nanotubes contacted by Pt electrodes in a field effect transistor configuration, focusing on improvements to the metal-nanotube contact resistance as the devices are annealed in inert environments including ultrahigh vacuum. At moderate temperatures (T880 K), thermal processing results in high resistance contacts with thermally activated barriers. Higher temperatures (T880 K) achieve nearly transparent contacts. In the latter case, analytical surface measurements reveal the catalytic decomposition of hydrocarbons into graphene layers on the Pt surface, suggesting that improved electronic behavior is primarily due to the formation of an all-carbon nanotube-graphite interface rather than to the improvement of the nanotube-Pt one. |
| Databáze: | OpenAIRE |
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