Enhanced Thermoelectric Power Factor of Tensile Drawn Poly(3-hexylthiophene)
Artikel i vetenskaplig tidskrift, 2019

© 2018 American Chemical Society. 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 μW 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.

Författare

Jonna Hynynen

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Christian Müller Group

Renee Kroon

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Christian Müller Group

Yadong Zhang

Georgia Institute of Technology

Stephen Barlow

Georgia Institute of Technology

Seth R. Marder

Georgia Institute of Technology

M. Kemerink

Linköpings universitet

Anja Lund

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Christian Müller Group

Christian Müller

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Christian Müller Group

ACS Macro Letters

2161-1653 (eISSN)

Vol. 8 1 70-76

Ämneskategorier

Textil-, gummi- och polymermaterial

Materialkemi

Den kondenserade materiens fysik

DOI

10.1021/acsmacrolett.8b00820

Mer information

Senast uppdaterat

2019-02-18