Significant electronic thermal transport in the conducting polymer poly(3,4-ethylenedioxythiophene).

Weathers, Annie; Khan, Zia Ullah; Brooke, Robert; Evans, Drew; Pettes, Michael T; Andreasen, Jens Wenzel; Crispin, Xavier; Shi, Li · Adv Mater · 2015

basic_science · Level V

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Abstract

Suspended microdevices are employed to measure the in-plane electrical conductivity, thermal conductivity, and Seebeck coefficient of suspended poly(3,4-ethylenedioxythiophene) (PEDOT) thin films. The measured thermal conductivity is higher than previously reported for PEDOT and generally increases with the electrical conductivity. The increase exceeds that predicted by the Wiedemann-Franz law for metals and can be explained by significant electronic thermal transport in PEDOT.