Doping mechanism in poly(3,4-ethylenedioxythiophene) doped with poly(4-styrenesulfonate):TiO2 nanoparticles composite films

Wun Hao Jhang, Yow Jon Lin, Cheng He Ruan, Day Shan Liu

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


The doping mechanism for composite poly(3,4-ethylenedioxythiophene) doped with poly(4-styrenesulfonate) films having TiO2 nanoparticles, denoted TiO2-doped PEDOT:PSS, is investigated in this study. It is shown that TiO2 doping may lead to decreased carrier concentration, owing to a combined effect of the high activation energy and changes in the chemical structure of PEDOT:PSS. The carrier mobility in PEDOT:PSS samples exhibits unexpectedly strong temperature dependence, implying the domination of tunneling (hopping) at low (high) temperatures. An exhibition of high mobility of TiO2-doped PEDOT:PSS samples is attributed to the weak local electron-phonon coupling.

Original languageEnglish
Pages (from-to)323-326
Number of pages4
JournalThin Solid Films
Publication statusPublished - 2013 Jul 31

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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