Highly catalytic carbon nanotube counter electrode on plastic for dyesolar cells utilizing cobalt-based redox mediator

Kerttu Aitola, Janne Halme, Sandra Feldt, Peter Lohse, Maryam Borghei, Antti Kaskela, Albert G. Nasibulin, Esko I. Kauppinen, Peter D. Lund, Gerrit Boschloo, Anders Hagfeldt

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

tA flexible, slightly transparent and metal-free random network of single-walled carbon nanotubes (SWC-NTs) on plain polyethylene terephthalate (PET) plastic substrate outperformed platinum on conductiveglass and on plastic as the counter electrode (CE) of a dye solar cell employing a Co(II/III)tris(2,2-bipyridyl)complex redox mediator in 3-methoxypropionitrile solvent. The CE charge-transfer resistance of theSWCNT film was 0.60 Ω cm2, 4.0 Ω cm2for sputtered platinum on indium tin oxide-PET substrate and1.7 Ω cm2for thermally deposited Pt on fluorine-doped tin oxide glass, respectively. The solar cell effi-ciencies were in the same range, thus proving that an entirely carbon-based SWCNT film on plastic is asgood CE candidate for the Co electrolyte.

Original languageEnglish
Pages (from-to)206-209
Number of pages4
JournalElectrochimica Acta
Volume111
DOIs
Publication statusPublished - 30 Nov 2013
Externally publishedYes

Keywords

  • Carbon nanotube
  • Cobalt complex
  • Counter electrode
  • Dye solar cell
  • Electrolyte
  • Plastic

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