High Thermoelectric Power Factor of Poly(3-hexylthiophene) through In-Plane Alignment and Doping with a Molybdenum Dithiolene Complex

Untilova, Viktoriia (author): Université de Strasbourg,University of Strasbourg

Hynynen, Jonna, 1987 (author): Chalmers tekniska högskola,Chalmers University of Technology

Hofmann, Anna, 1987 (author): Chalmers tekniska högskola,Chalmers University of Technology

Scheunemann, Dorothea, 1985 (author): Chalmers tekniska högskola,Chalmers University of Technology

Kemerink, M. (author): Ruprecht-Karls-Universität Heidelberg,Heidelberg University

Müller, Christian, 1980 (author): Chalmers tekniska högskola,Chalmers University of Technology

Brinkmann, Martin (author): Université de Strasbourg,University of Strasbourg

(creator_code:org_t)

2020-07-23
2020
English.
In: Macromolecules. - : American Chemical Society (ACS). - 1520-5835 .- 0024-9297. ; 53:15, s. 6314-6321

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Abstract Subject headings

We report a record thermoelectric power factor of up to 160 μW m-1 K-2 for the conjugated polymer poly(3-hexylthiophene) (P3HT). This result is achieved through the combination of high-temperature rubbing of thin films together with the use of a large molybdenum dithiolene p-dopant with a high electron affinity. Comparison of the UV-vis-NIR spectra of the chemically doped samples to electrochemically oxidized material reveals an oxidation level of 10%, i.e., one polaron for every 10 repeat units. The high power factor arises due to an increase in the charge-carrier mobility and hence electrical conductivity along the rubbing direction. We conclude that P3HT, with its facile synthesis and outstanding processability, should not be ruled out as a potential thermoelectric material. ©

By the author/editor: Untilova, Viktor ...; Hynynen, Jonna, ...; Hofmann, Anna, 1 ...; Scheunemann, Dor ...; Zhang, Yadong; Barlow, Stephen; show more...; Kemerink, M.; Marder, Seth R.; Biniek, Laure; Müller, Christia ...; Brinkmann, Marti ...; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Inorganic Chemis ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Materials Engine ...; and Textile Rubber a ...

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Materials Chemis ...

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