Journal of Solid State Electrochemistry

, Volume 20, Issue 8, pp 2191–2196

Electrode material dependent p- or n-like thermoelectric behavior of single electrochemically synthesized poly(2,2′–bithiophene) layer—application to thin film thermoelectric generator

  • Jonas Kublitski
  • Ana C. B. Tavares
  • José P. M. Serbena
  • Yuchun Liu
  • Bin Hu
  • Ivo A. Hümmelgen
Original Paper

Abstract

We prepared poly(2,2′–bithiophene) (PBT) on top of Au and indium-tin oxide (ITO) bottom electrodes and determined the Seebeck coefficient in devices with Al top electrode. Negative Seebeck coefficient was observed in ITO/PBT/Al devices, whereas Au/PBT/Al devices showed positive Seebeck coefficient. This difference allowed the construction of a complete thermoelectric thin film generator with top electrode of Al and bottom electrode of ITO and Au (each one at half of the electrode area) in a single organic layer deposition step. The thermoelectric generator achieves ca. 800 μV K−1 at room temperature, which is a very high value for conjugated polymer-based devices.

Keywords

Polybithiophene Organic thermogenerator Seebeck coefficient 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Jonas Kublitski
    • 1
  • Ana C. B. Tavares
    • 1
  • José P. M. Serbena
    • 1
  • Yuchun Liu
    • 2
  • Bin Hu
    • 2
    • 3
  • Ivo A. Hümmelgen
    • 1
  1. 1.Departamento de FísicaUniversidade Federal do ParanáCuritibaBrazil
  2. 2.Wu Han National Laboratory for OptoelectronicsHuazhong University of Science and TechnologyWu HanChina
  3. 3.Department of Materials Science and EngineeringUniversity of TennesseeKnoxvilleUSA

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