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Keywords:

  • light harvesting;
  • photochromism;
  • sensitizers;
  • solar cells;
  • squaraines
Thumbnail image of graphical abstract

Forward from square one: The incorporation of a molecularly engineered original panchromatic squaraine sensitizer in a dye-sensitized solar cell enables the preparation of devices having external quantum efficiencies as high as 4.71 %; an unprecedented result for this class of compounds.