Electron-phonon coupling modification and carrier mobility enhancement in poly(3,4-ethylenedioxythiophene) doped with poly(4-styrenesulfonate) films by ultraviolet irradiation

Yow-Jon Lin, Yi Min Chin, Cheng You Wu, Day Shan Liu

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The effect of ultraviolet irradiation on the electrical property of poly(3,4-ethylenedioxythiophene) doped with poly(4-styrenesulfonate) (PEDOT:PSS) films was examined. It is shown that the carrier mobility increases while the carrier density does not change substantially. The carrier mobility in PEDOT:PSS samples exhibits strong temperature dependence, indicating the dominance of tunneling (hopping) at low (high) temperatures. The results demonstrate that changes in the chemical structure may lead to the modification of the electron-phonon coupling, thus increasing the carrier mobility in PEDOT:PSS.

Original languageEnglish
Article number093707
JournalJournal of Applied Physics
Volume116
Issue number9
DOIs
Publication statusPublished - 2014 Sep 7

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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