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

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.
Authors:
;  [1] ;  [2] ;  [3]
  1. Institute of Photonics, National Changhua University of Education, Changhua 500, Taiwan (China)
  2. Department of Physics, National Changhua University of Education, Changhua 500, Taiwan (China)
  3. Graduate Institute of Electro-Optical and Materials Science, National Formosa University, Huwei 632, Taiwan (China)
Publication Date:
OSTI Identifier:
22314391
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CARRIER DENSITY; CARRIER MOBILITY; DOPED MATERIALS; ELECTRICAL PROPERTIES; ELECTRON-PHONON COUPLING; FILMS; IRRADIATION; TEMPERATURE DEPENDENCE; TUNNEL EFFECT; ULTRAVIOLET RADIATION