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Keywords:

  • conjugated polymers;
  • fullerenes;
  • solar cells;
  • solar fuels
Thumbnail image of graphical abstract

A triple junction polymer solar cell in a novel 1 + 2 type configuration provides photoelectrochemical water splitting in its maximum power point at V ≈ 1.70 V with an estimated solar to hydrogen energy conversion efficiency of 3.1%. The triple junction cell consists of a wide bandgap front cell and two identical small bandgap middle and back cells.