Thermoelectric behavior of organic thin film nanocomposites
Document Type
Article
Publication Date
1-15-2013
Department
Department of Chemical Engineering
Abstract
Organic thin film nanocomposites, prepared by liquid-phase exfoliation, were investigated for their superior electrical properties and thermoelectric behavior. Single-walled carbon nanotubes (SWNT) were stabilized by intrinsically conductive poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) in an aqueous solution. The electrical conductivity (σ) was found to increase linearly as 20 to 95 wt % SWNT. At 95 wt % SWNT, these thin films exhibit metallic electrical conductivity (∼4.0 × 105 S m-1) that is among the highest values ever reported for a free-standing, fully organic material. The thermopower (S) remains relatively unaltered as the electrical conductivity increases, leading to a maximum power factor (S2σ) of 140 μW m-1 K-2. This power factor is within an order of magnitude of bismuth telluride, so it is believed that these flexible films could be used for some unique thermoelectric applications requiring mechanical flexibility and printability.
Publication Title
Journal of Polymer Science, Part B: Polymer Physics
Recommended Citation
Moriarty, G.,
De, S.,
King, P.,
Khan, U.,
Via, M.,
King, J. A.,
Coleman, J.,
&
Grunlan, J.
(2013).
Thermoelectric behavior of organic thin film nanocomposites.
Journal of Polymer Science, Part B: Polymer Physics,
51(2), 119-123.
http://doi.org/10.1002/polb.23186
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/3853
Publisher's Statement
© 2012 Wiley Periodicals, Inc. Publisher’s version of record: https://doi.org/10.1002/polb.23186