Transparent platinum counter electrode for efficient semi-transparent dye-sensitized solar cells

Anastasiia Iefanova, Jeevan Nepal, Prashant Poudel, Daren Davoux, Umesh Gautam, Venkataiah Mallam, Qiquan Qiao, Brian Logue, Mahdi Farrokh Baroughi

Research output: Contribution to journalArticlepeer-review

Abstract

A method for fabrication of highly transparent platinum counter electrodes (CEs) has been developed based on spray coating of Pt nanoparticles (NPs) on hot substrates. This method leads to 86% reduction in Pt consumption reducing the Pt cost per peak watt of counter electrode from $0.79/Wp down to $0.11/Wp compared to the conventional Pt counter electrodes made by sputter deposition. The simplicity and low cost of this method provide a basis for an up-scalable fabrication process. The Pt NP layer is over 88% transparent, leading to overall transparency of 80% when incorporated with indium tin oxide/glass substrates for functional counter electrodes. This counter electrode exhibits a large surface area and high catalytic activity, comparable to that of the conventional opaque CEs. Semi-transparent dye-sensitized solar cells fabricated based on this counter electrode showed 6.17% power conversion efficiency.

Original languageEnglish (US)
Pages (from-to)578-584
Number of pages7
JournalThin Solid Films
Volume562
DOIs
StatePublished - Jul 1 2014
Externally publishedYes

Keywords

  • Dye-sensitized solar cells
  • Pt nanoparticles
  • Transparent counter electrode
  • Transparent solar cells

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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