Layer-by-layer self-assembled mesoporous PEDOT-PSS and carbon black hybrid films for platinum free dye-sensitized-solar-cell counter electrodes

Koji Kitamura, Seimei Shiratori

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

A thin film of poly(3,4-ethylenedioxythiophene)-poly(4-styrenesulfonic acid) (PEDOT-PSS), which is an alternative cathodic catalyst for Pt in dye-sensitized solar cells, was prepared using the layer-by-layer self-assembly method (LbL). The film is highly adhesive to the substrate and has a controllable thickness. Therefore, the PEDOT-PSS film prepared using LbL is expected have high performance and durability as a counter electrode. Moreover, when carbon black was added to the PEDOT-PSS solution, highly mesoporous PEDOT-PSS and carbon black hybrid films were obtained. These films showed high cathodic activity. In this study, we investigated the change in morphology in the obtained film with increasing carbon black content, and the influence of the porosity and thickness on the performance of the cells. In this study, a Pt-free counter electrode with performance similar to that of Pt-based counter electrodes was successfully fabricated. The achieved efficiency of 4.71% was only a factor of 8% lower than that of the cell using conventional thermally deposited Pt on fluorine-doped tin oxide glass counter electrodes.

Original languageEnglish
Article number195703
JournalNanotechnology
Volume22
Issue number19
DOIs
Publication statusPublished - 2011 May 13

Fingerprint

Soot
Carbon black
Platinum
Electrodes
Acids
Fluorine
Tin oxides
Self assembly
Adhesives
Durability
Porosity
Dye-sensitized solar cells
styrenesulfonic acid polymer
poly(3,4-ethylene dioxythiophene)
Glass
Thin films
Catalysts
Substrates

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

Layer-by-layer self-assembled mesoporous PEDOT-PSS and carbon black hybrid films for platinum free dye-sensitized-solar-cell counter electrodes. / Kitamura, Koji; Shiratori, Seimei.

In: Nanotechnology, Vol. 22, No. 19, 195703, 13.05.2011.

Research output: Contribution to journalArticle

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