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Keywords:

  • Charge transfer;
  • Dye sensitization;
  • Ruthenium complexes;
  • Solar cells;
  • Titania
Thumbnail image of graphical abstract

Novel ruthenium dyes with electron- donor antenna groups (triphenyl amine and tetraphenylbenzidine) are developed and applied in solid-state dye- sensitized solar cells. The higher absorption arising from extended conjugation in these dyes leads to efficient light harvesting, which in turn results in higher short-circuit currents; multistep charge-transfer cascades take place, very similar to the photosynthetic cascade process (see figure).