Doping dependence of electrical and thermal conductivity of nanoscale polyaniline thin films

Jiezhu Jin, Qing Wang, M. A. Haque

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

We performed simultaneous characterization of electrical and thermal conductivity of 55 nm thick polyaniline (PANI) thin films doped with different levels of camphor sulfonic acids (CSAs). The effect of the doping level is more pronounced on electrical conductivity than on thermal conductivity of PANIs, thereby greatly affecting their ratio that determines the thermoelectric efficiency. At the 60% (the molar ratio of CSA to phenyl-N repeat unit of PANI) doping level, PANI exhibited the maximum electrical and thermal conductivity due to the formation of mostly delocalized structures. Whereas polarons are the charge carriers responsible for the electrical conduction, phonons are believed to play a dominant role in the heat conduction in nanoscale doped PANI thin films.

Original languageEnglish (US)
Article number205302
JournalJournal of Physics D: Applied Physics
Volume43
Issue number20
DOIs
StatePublished - 2010

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

Fingerprint

Dive into the research topics of 'Doping dependence of electrical and thermal conductivity of nanoscale polyaniline thin films'. Together they form a unique fingerprint.

Cite this