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Keywords:

  • cobalt;
  • dye-sensitized solar cells;
  • electrochemistry;
  • photovoltaics;
  • sensitizers
Thumbnail image of graphical abstract

Good Co-op: A novel cyclopentadithiophene-bridged donor–acceptor dye applied as sensitizer in mesoscopic dye-sensitized solar cells, in conjunction with the cobalt complexes [CoII(bpy)3](B(CN)4)2 and [CoIII(bpy)3](B(CN)4)3 as redox couple, yields high power conversion efficiencies (up to 9.6 %) under standard AM 1.5G solar irradiation. The results confirm that cobalt complexes are legitimate alternatives to the commonly used I/I3 redox shuttle when used with judiciously engineered organic sensitizers.