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Thermoelectric composites of poly(3-hexylthiophene) and carbon nanotubes with a large power factor

C. Bounioux ; P. Diaz-Chao ; M. Campoy-Quiles ; M.S. Martín-González ; A.R. Gõni ; R. Yerushalmi-Rozen ; Christian Müller (Institutionen för kemi- och bioteknik, Polymerteknologi)
Energy & Environmental Science (1754-5692). Vol. 6 (2013), 3, p. 918-925.
[Artikel, refereegranskad vetenskaplig]

Composite films of poly(3-hexylthiophene) and single- as well as multi-walled carbon nanotubes are demonstrated to offer a competitive thermoelectric performance. The power factor significantly exceeds values obtained with either constituent alone provided that the conjugated polymer is sufficiently p-doped. The use of single-walled carbon nanotubes consistently results in a higher electrical conductivity with a maximum value above 10(3) S cm(-1) and thus gives rise to a power factor of 25 +/- 6 mu W m(-1) K-2 for a filler content of only 8 wt% and a maximum 95 +/- 12 mu W m(-1) K-2 for 42-81 wt%. Moreover, a carbon nanotube content of 8-10 wt% does not compromise the low bulk thermal conductivity of the polymer matrix, which promises a high figure of merit of at least ZT > 10(-2) at room-temperature. All samples are cast on plastic substrates, emphasising their suitability for large-area, flexible thermoelectric applications.



Denna post skapades 2013-02-21. Senast ändrad 2015-02-26.
CPL Pubid: 173935

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Polymerteknologi (2005-2014)

Ämnesområden

Polymerkemi

Chalmers infrastruktur