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

AutorBounioux, Celine; Díaz Chao, Pablo ; Campoy Quiles, Mariano ; Martín-González, Marisol S. ; Goñi, Alejandro R. ; Yerushalmi-Rozene, Rachel; Müller, Christian
Fecha de publicación2013
EditorRoyal Society of Chemistry (Great Britain)
CitaciónEnergy and Environmental Sciences 6: 918-925 (2013)
ResumenComposite 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 μW m-1 K-2 for a filler content of only 8 wt% and a maximum 95 ± 12 μW 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. © 2013 The Royal Society of Chemistry.
Versión del editorhttp://dx.doi.org/10.1039/c2ee23406h
Identificadoresissn: 1754-5692
e-issn: 1754-5706
Aparece en las colecciones: (IMN-CNM) Artículos
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