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

doi:10.1063/1.4894836

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

Graduate Institute of Photonics

Research output: Contribution to journal › Article

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 language	English
Article number	093707
Journal	Journal of Applied Physics
Volume	116
Issue number	9
DOIs	https://doi.org/10.1063/1.4894836
Publication status	Published - 2014 Sep 7

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All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Cite this

Lin, Y-J., Chin, Y. M., Wu, C. Y., & Liu, D. S. (2014). Electron-phonon coupling modification and carrier mobility enhancement in poly(3,4-ethylenedioxythiophene) doped with poly(4-styrenesulfonate) films by ultraviolet irradiation. Journal of Applied Physics, 116(9), [093707]. https://doi.org/10.1063/1.4894836

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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.",

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10.1063/1.4894836