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Enhanced Thermoelectric Power Factor of Tensile Drawn Poly(3-hexylthiophene)
Chalmers Univ Technol, Sweden.
Chalmers Univ Technol, Sweden.
Chalmers Univ Technol, Sweden.
Georgia Inst Technol, GA 30332 USA; Georgia Inst Technol, GA 30332 USA.
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2019 (English)In: ACS Macro Letters, E-ISSN 2161-1653, Vol. 8, no 1, p. 70-76Article in journal (Refereed) Published
Abstract [en]

The thermoelectric power factor of a broad range of organic semiconductors scales with their electrical conductivity according to a widely obeyed power law, and therefore, strategies that permit this empirical trend to be surpassed are highly sought after. Here, tensile drawing of the conjugated polymer poly(3-hexylthiophene) (P3HT) is employed to create free-standing films with a high degree of uniaxial alignment. Along the direction of orientation, sequential doping with a molybdenum tris(dithiolene) complex leads to a 5-fold enhancement of the power factor beyond the predicted value, reaching up to 16 mu W m(-1) K-2 for a conductivity of about 13 S cm(-1). Neither stretching nor doping affect the glass transition temperature of P3HT, giving rise to robust free-standing materials that are of interest for the design of flexible thermoelectric devices.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2019. Vol. 8, no 1, p. 70-76
National Category
Polymer Technologies
Identifiers
URN: urn:nbn:se:liu:diva-154721DOI: 10.1021/acsmacrolett.8b00820ISI: 000456493000011PubMedID: 30701126OAI: oai:DiVA.org:liu-154721DiVA, id: diva2:1292265
Note

Funding Agencies|Swedish Research Council [2016-06146]; Knut and Alice Wallenberg Foundation through a Wallenberg Academy Fellowship; European Research Council (ERC) [637624]; U.S. National Science Foundation through the DMREF program [DMR-1729737]

Available from: 2019-02-27 Created: 2019-02-27 Last updated: 2019-03-26

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The full text will be freely available from 2019-12-26 10:21
Available from 2019-12-26 10:21

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
  • html
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