Transparent Platinum Counter Electrode for Efficient Semi-transparent Dye-sensitized Solar Cells
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.
Thin Solid Films
DOI of Published Version
Iefanova, Anastasiia; Napal, Jeevan; Poudel, Prashant; Davoux, Daren; Gautam, Umesh; Mallam, Venkataiah; Qiao, Qiquan; Logue, Brian A.; and Baroughi, Madhi Farrokh, "Transparent Platinum Counter Electrode for Efficient Semi-transparent Dye-sensitized Solar Cells" (2014). Chemistry and Biochemistry Faculty Publications. 61.