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Open AccessArticle

Characterization of Solvent-Treated PEDOT:PSS Thin Films with Enhanced Conductivities

1
Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei 10608, Taiwan
2
Research and Development Center for Smart Textile Technology, National Taipei University of Technology, Taipei 10608, Taiwan
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(1), 134; https://doi.org/10.3390/polym11010134
Received: 11 December 2018 / Revised: 9 January 2019 / Accepted: 11 January 2019 / Published: 14 January 2019
(This article belongs to the Special Issue Synthesis and Application of Conjugated Polymers)
The conducting polymer of poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) is one of the most important and intensively investigated organic conducting materials. The PEDOT:PSS water dispersions with various concentrations of poly (4-styrenesulfonic acid) solution (PSSAS) were synthesized by 3,4-ethylenedioxythiophene (EDOT) in the presence of water. The fabrication of the solvent-treated PEDOT:PSS films through spin coating and solvent treatment processes was achieved with a solvent of pure water mixed with acetone (or MeOH, EtOH) in a ratio of 50:50. Moreover, both the organic solvent and water have synergetic effects while the PSS and PEDOT-attached PSS segments will form a coil-like and a linear (or extended-coil) structure, respectively. That may induce a stacking of the linear and planar PEDOT-attached PSS segments, which favors the formation of a crystalline phase. Finally, the maximum electrical conductivity of the PEDOT:PSS thin films with solvent treatment was investigated by means of X-ray diffraction (XRD) patterns and scanning electron microscope (SEM) images. Furthermore, we aimed to explain the synergetic effects of phase separation of the PEDOT:PSS thin films by both the organic solvent and water. View Full-Text
Keywords: PEDOT:PSS thin film; conducting polymer; electrical conductivity; X-ray diffraction PEDOT:PSS thin film; conducting polymer; electrical conductivity; X-ray diffraction
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MDPI and ACS Style

Rwei, S.-P.; Lee, Y.-H.; Shiu, J.-W.; Sasikumar, R.; Shyr, U.-T. Characterization of Solvent-Treated PEDOT:PSS Thin Films with Enhanced Conductivities. Polymers 2019, 11, 134.

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