Surface Modification of Polymer Counter Electrode for Low Cost Dye-sensitized Solar Cells

Hyunwoong Seo, Min Kyu Son, Shinji Hashimoto, Toshiyuki Takasaki, Naho Itagaki, Kazunori Koga, Masaharu Shiratani

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) was already used as a counter electrode material of dye-sensitized solar cells (DSCs) in other previous researches but its low catalytic activity has been a sticking point. Here we report the catalytic activation of PEDOT:PSS counter electrode by the surface modification using nano-particles. Nano-particle addition contributes to widening catalytic interface and improving catalytic characteristics of PEDOT:PSS counter electrode. However, only a few materials are applicable although various nano-particle materials were applied for the counter electrode of DSC. Catalytic characteristics of PEDOT:PSS counter electrodes with nano-particles are analyzed by cyclic voltammetry and electrochemical impedance spectroscopy. Finally, a DSC based on catalytically enhanced polymer counter electrode achieves 0.71 V of VOC, 12.60 mA cm-2 of JSC, 0.75 of FF, and 6.65% of efficiency, and it is higher than 5.60% of efficiency of a DSC based on conventional Pt counter electrode.

Original languageEnglish
Pages (from-to)880-887
Number of pages8
JournalElectrochimica Acta
Publication statusPublished - Aug 20 2016

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry


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