Annealing effects on electric contacts between carbon nanotubes and electrodes

Jingqi Li, Qing Zhang*, Mary B. Chan-Park, Yehai Yan

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    6 Scopus citations

    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 languageEnglish (US)
    Pages (from-to)401-406
    Number of pages6
    JournalInternational Journal of Nanoscience
    Volume5
    Issue number4-5
    StatePublished - Aug 1 2006

    Keywords

    • Annealing
    • Carbon nanotubes
    • Contact resistance

    ASJC Scopus subject areas

    • Biotechnology
    • Bioengineering
    • Materials Science(all)
    • Condensed Matter Physics
    • Computer Science Applications
    • Electrical and Electronic Engineering

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