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Structurally-driven Enhancement of Thermoelectric Properties within Poly(3,4-ethylenedioxythiophene) thin Films

Due to the rising need for clean energy, thermoelectricity has raised as a potential alternative to reduce dependence on fossil fuels. Specifically, thermoelectric devices based on polymers could offer an efficient path for near-room temperature energy harvesters. Thus, control over thermoelectric p...

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Autores principales: Petsagkourakis, Ioannis, Pavlopoulou, Eleni, Portale, Giuseppe, Kuropatwa, Bryan A., Dilhaire, Stefan, Fleury, Guillaume, Hadziioannou, Georges
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4965772/
https://www.ncbi.nlm.nih.gov/pubmed/27470637
http://dx.doi.org/10.1038/srep30501
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author Petsagkourakis, Ioannis
Pavlopoulou, Eleni
Portale, Giuseppe
Kuropatwa, Bryan A.
Dilhaire, Stefan
Fleury, Guillaume
Hadziioannou, Georges
author_facet Petsagkourakis, Ioannis
Pavlopoulou, Eleni
Portale, Giuseppe
Kuropatwa, Bryan A.
Dilhaire, Stefan
Fleury, Guillaume
Hadziioannou, Georges
author_sort Petsagkourakis, Ioannis
collection PubMed
description Due to the rising need for clean energy, thermoelectricity has raised as a potential alternative to reduce dependence on fossil fuels. Specifically, thermoelectric devices based on polymers could offer an efficient path for near-room temperature energy harvesters. Thus, control over thermoelectric properties of conducting polymers is crucial and, herein, the structural, electrical and thermoelectric properties of poly(3,4-ethylenedioxythiophene) (PEDOT) thin films doped with p-toluenesulfonate (Tos) molecules were investigated with regards to thin film processing. PEDOT:Tos thin films were prepared by in-situ polymerization of (3,4-ethylenedioxythiophene) monomers in presence of iron(III) p-toluenesulfonate with different co-solvents in order to tune the film structure. While the Seebeck coefficient remained constant, a large improvement in the electrical conductivity was observed for thin films processed with high boiling point additives. The increase of electrical conductivity was found to be solely in-plane mobility-driven. Probing the thin film structure by Grazing Incidence Wide Angle X-ray Scattering has shown that this behavior is dictated by the structural properties of the PEDOT:Tos films; specifically by the thin film crystallinity combined to the preferential edge-on orientation of the PEDOT crystallites. Consequentially enhancement of the power factor from 25 to 78.5 μW/mK(2) has been readily obtained for PEDOT:Tos thin films following this methodology.
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spelling pubmed-49657722016-08-08 Structurally-driven Enhancement of Thermoelectric Properties within Poly(3,4-ethylenedioxythiophene) thin Films Petsagkourakis, Ioannis Pavlopoulou, Eleni Portale, Giuseppe Kuropatwa, Bryan A. Dilhaire, Stefan Fleury, Guillaume Hadziioannou, Georges Sci Rep Article Due to the rising need for clean energy, thermoelectricity has raised as a potential alternative to reduce dependence on fossil fuels. Specifically, thermoelectric devices based on polymers could offer an efficient path for near-room temperature energy harvesters. Thus, control over thermoelectric properties of conducting polymers is crucial and, herein, the structural, electrical and thermoelectric properties of poly(3,4-ethylenedioxythiophene) (PEDOT) thin films doped with p-toluenesulfonate (Tos) molecules were investigated with regards to thin film processing. PEDOT:Tos thin films were prepared by in-situ polymerization of (3,4-ethylenedioxythiophene) monomers in presence of iron(III) p-toluenesulfonate with different co-solvents in order to tune the film structure. While the Seebeck coefficient remained constant, a large improvement in the electrical conductivity was observed for thin films processed with high boiling point additives. The increase of electrical conductivity was found to be solely in-plane mobility-driven. Probing the thin film structure by Grazing Incidence Wide Angle X-ray Scattering has shown that this behavior is dictated by the structural properties of the PEDOT:Tos films; specifically by the thin film crystallinity combined to the preferential edge-on orientation of the PEDOT crystallites. Consequentially enhancement of the power factor from 25 to 78.5 μW/mK(2) has been readily obtained for PEDOT:Tos thin films following this methodology. Nature Publishing Group 2016-07-29 /pmc/articles/PMC4965772/ /pubmed/27470637 http://dx.doi.org/10.1038/srep30501 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Petsagkourakis, Ioannis
Pavlopoulou, Eleni
Portale, Giuseppe
Kuropatwa, Bryan A.
Dilhaire, Stefan
Fleury, Guillaume
Hadziioannou, Georges
Structurally-driven Enhancement of Thermoelectric Properties within Poly(3,4-ethylenedioxythiophene) thin Films
title Structurally-driven Enhancement of Thermoelectric Properties within Poly(3,4-ethylenedioxythiophene) thin Films
title_full Structurally-driven Enhancement of Thermoelectric Properties within Poly(3,4-ethylenedioxythiophene) thin Films
title_fullStr Structurally-driven Enhancement of Thermoelectric Properties within Poly(3,4-ethylenedioxythiophene) thin Films
title_full_unstemmed Structurally-driven Enhancement of Thermoelectric Properties within Poly(3,4-ethylenedioxythiophene) thin Films
title_short Structurally-driven Enhancement of Thermoelectric Properties within Poly(3,4-ethylenedioxythiophene) thin Films
title_sort structurally-driven enhancement of thermoelectric properties within poly(3,4-ethylenedioxythiophene) thin films
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4965772/
https://www.ncbi.nlm.nih.gov/pubmed/27470637
http://dx.doi.org/10.1038/srep30501
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