Fully Organic Nanocomposites with High Thermoelectric Power Factors by using a Dual-Stabilizer Preparation Academic Article uri icon

abstract

  • AbstractThe thermoelectric properties of fully organic nanocomposites were investigated, for which mesotetra(4carboxyphenyl) porphine (TCPP) and poly(3,4ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) were used as instrinically conductive and semiconducting stabilizers, respectively. The electrical conductivity () of these dualstabilizer organic composites increased to approximately 9500Sm1 as the concentrations of both the multiwalled carbon nanotubes (MWNTs) and PEDOT:PSS were increased. The thermopower (or Seebeck coefficient, S) and thermal conductivity, however, remained relatively unaffected by the increase in concentration (40VK1 and 0.12Wm1K1, respectively). Replacing MWNTs with doublewalled carbon nanotubes (DWNTs) increased and S to approximately 96000Sm1 and 70VK1, respectively, at 40 wt% DWNTs. This study suggests that and S can be simultaneously tailored by using multiple stabilizing agents to affect the transport properties of the junctions between nanotubes. Combining semiconducting and intrinsically conductive molecules as CNTstabilizers has led to a power factor that is among the best for a completely organic, freestanding film (500Wm1K2). These flexible, segregatednetwork nanocomposites now exhibit properties that rival the more conventional inorganic semiconductors, particularly when normalized by the mass.

published proceedings

  • ENERGY TECHNOLOGY

altmetric score

  • 7

author list (cited authors)

  • Moriarty, G. P., Briggs, K., Stevens, B., Yu, C., & Grunlan, J. C.

citation count

  • 62

complete list of authors

  • Moriarty, Gregory P||Briggs, Kenneth||Stevens, Bart||Yu, Choongho||Grunlan, Jaime C

publication date

  • April 2013

publisher