Organic Semiconductors for Thermoelectric Applications |
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| Authors: | Manfred Scholdt Hung Do Johannes Lang Andre Gall Alexander Colsmann Uli Lemmer Jan D. Koenig Markus Winkler Harald Boettner |
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| Affiliation: | (1) State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P.R. China;(2) Department of Information and Electronics Engineering, Zhejiang University, Hangzhou, 310027, P.R. China; |
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| Abstract: | The thermoelectric performance of thin films fabricated from two commercially available, highly conductive polymer formulations based on poly(3,4-ethylendioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) was investigated. In order to enhance the electrical conductivity, the high-boiling solvent dimethyl sulfoxide (DMSO) was added. By changing the content of DMSO the electrical conductivity was increased by a factor of two without changing the Seebeck coefficient or the thermal conductivity. We achieved ZT = 9.2 × 10−3 at room temperature upon the addition of 5 vol.% DMSO to the PEDOT:PSS formulation. |
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