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

Journal Article · Sun Sep 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4894836· OSTI ID:22314391

Lin, Yow-Jon; Chin, Yi-Min ^[1]; Wu, Cheng-You ^[2]; Liu, Day-Shan ^[3]

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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)

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.

• OSTI ID: 22314391
• Journal Information: Journal of Applied Physics, Vol. 116, Issue 9; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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