Abstract
Single wall carbon nanotubes suspended in isopropyl alcohol are placed between two Au electrodes by ac dielectrophoresis method. Total resistance including the contact resistance and intrinsic tube resistance is found to decrease from 105-106 Ω for as-prepared samples to 104 Ω after annealing at 300°C in ambient environment. Measured I-V curves and Schottky barrier heights suggest that the electric contacts are changed from Schottky to Ohmic characteristics after annealing. These results demonstrate that annealing in ambient environment is a simple and efficient way to decrease the contact resistance.
Original language | English (US) |
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Pages (from-to) | 401-406 |
Number of pages | 6 |
Journal | International Journal of Nanoscience |
Volume | 5 |
Issue number | 4-5 |
DOIs | |
State | Published - 2006 |
Externally published | Yes |
Keywords
- Annealing
- Carbon nanotubes
- Contact resistance
ASJC Scopus subject areas
- Biotechnology
- Bioengineering
- General Materials Science
- Condensed Matter Physics
- Computer Science Applications
- Electrical and Electronic Engineering