Electrical transport properties of electrodeposited polypyrrole/single-walled carbon nanotubes

POSTER

Abstract

Single-walled carbon nanotubes (CNT) coated by conducting polypyrrole (PPy) have been synthesized by electrochemical polymerization of pyrrole on CNTs. In order to study the influence of PPy on the electrical transport properties of CNTs, the temperature dependences of the conductivity have been measured on bare CNTs and CNT/PPy. At room temperatures, the conductivity of CNT/PPy was reduced with thin PPy layers, whereas it was enhanced with thick PPy layers. In addition, depending on the PPy thickness, different temperature dependences of conductivity have been observed. Possible electrical transport mechanisms are discussed.

*This work was supported in part by MIC and IITA through IT Leading R\&D Support Project.

Authors

  • Ji Hun Kim

    • Dept. of Physics, Yonsei Univ.
    • Dept. of Physics, Yonsei University

  • Je Seung Oh

    • National Core Research Center for Nanomedical Technology, Yonsei Univ.
    • National Core Research Center for Nanomedical Technology, Yonsei University

  • Young Wook Chang

    • Dept. of Physics, Yonsei Univ.
    • Dept. of Physics, Yonsei University

  • Seung Hwan Yoo

    • Dept. of Physics, Yonsei Univ.
    • Dept. of Physics, Yonsei University

  • Hyang Hee Choi

    • National Core Research Center for Nanomedical Technology, Yonsei Univ.
    • National Core Research Center for Nanomedical Technology, Yonsei University

  • Kyung-Hwa Yoo

    • Department of Physics
    • Dept. of Physics and National Core Research Center for Nanomedical Technology, Yonsei Univ.
    • Department of Physics, Yonsei University
    • Dept. of Physics and National Core Research Center for Nanomedical Technologyl, Yonsei University
    • Dept. of Physic
    • Dept. of Physics and National Core Research Center for Nanomedical Technology, Yonsei University