PEDOT Polymer Film Based Counter Electrodes for Pt-free Dye-Sensitized Solar Cells

Kwon, Jeong; Park, Jong Hyeok

doi:2013.4.3.89

J. Electrochem. Sci. Technol > Volume 4(3); 2013 > Article

Article

Journal of Electrochemical Science and Technology 2013;4(3):89-92.
DOI: https://doi.org/10.5229/JECST.2013.4.3.89

PEDOT Polymer Film Based Counter Electrodes for Pt-free Dye-Sensitized Solar Cells

Jeong Kwon, Jong Hyeok Park

School of Chemical Engineering, Sungkyunkwan University;School of Chemical Engineering, Sungkyunkwan University;

Abstract

Poly (3,4-ethylenedioxythiophene) (PEDOT) polymers with different electric conductivities were synthesized directly on a FTO substrate via a chemical polymerization method and applied as a platinum (Pt)-free counter electrode for dye-sensitized solar cells (DSSCs). The catalytic properties of the PEDOT as a function of electrical conductivity were studied using cyclic voltammograms, J-V measurements and impedance spectroscopy. The PEDOT counter electrode with around 340 S/cm conductivity exhibited the best performance as a counter electrode for tri-iodide reduction. The ability to modulate catalytic activity of PEDOT with changes in conductivity shows one of promising routes for developing new counter electrode of Pt-free DSSCs.

Key Words: Dye-sensitized solar cells, PEDOT, Counter electrode, Pt-free