A PEDOT-reinforced exfoliated graphite composite as a Pt- and TCO-free flexible counter electrode for polymer electrolyte dye-sensitized solar cells

S. Nagarajan, P. Sudhagar, V. Raman, Woohyung Cho, K. S. Dhathathreyan, Yong Soo Kang

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)

Abstract

Herein, we have demonstrated a highly efficient, flexible, and low-cost (Pt-free and TCO-free) counter electrode made of a highly conductive poly(3,4-ethylene dioxythiophene) (PEDOT)/exfoliated graphite (EFG) composite in solid state dye-sensitized solar cells (DSSCs) employing polymer electrolytes. Electropolymerized one-dimensional PEDOT nanofibers were firmly attached to a flexible EFG sheet affording high catalytic activity and electron conductivity. PEDOT/EFG counter electrode-based DSSCs showed an energy conversion efficiency of 5.7% with a solid polymer electrolyte, which is significantly higher than conventional Pt electrodes (4.4%) under similar device architecture conditions.

Original languageEnglish
Pages (from-to)1048-1054
Number of pages7
JournalJournal of Materials Chemistry A
Volume1
Issue number4
DOIs
Publication statusPublished - 28 Jan 2013

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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