CoS Supersedes Pt as Efficient Electrocatalyst for Triiodide Reduction in Dye-Sensitized Solar Cells
Journal of the American Chemical Society2009Vol. 131(44), pp. 15976–15977
Citations Over TimeTop 1% of 2009 papers
Mingkui Wang, Alina M. Anghel, Benoı̂t Marsan, Ngoc-Le Cevey Ha, Nuttapol Pootrakulchote, Shaik M. Zakeeruddin, Michaël Grätzel
Abstract
We report an efficient nonplatinized flexible counter electrode for dye-sensitized solar cells. In combination with a solvent-free ionic liquid electrolyte, we have demonstrated a approximately 6.5% cell with an amphiphilic ruthenium polypyridyl photosensitizer showing excellent stability measured under prolonged light soaking at 60 degrees C. Compared to the Pt deposited PEN film, the CoS deposited PEN film shows higher electrocatalytic activity for the reduction of triiodide. This is expected to have an important practical consequence on the production of flexible low-cost and lightweight thin film DSC devices based on the plastic matrix.
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