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Keywords:

  • donor–acceptor systems;
  • energy conversion;
  • polymers;
  • semiconductors;
  • solar cells
Thumbnail image of graphical abstract

High-powered polymer: Fluorinated benzothiadiazole was incorporated into a polymer that was used in a high-performance solar cell. The model polymer 2 has decreased HOMO and LUMO energy levels and a similar band gap when compared with its nonfluorinated analogue 1. A bulk heterojunction device derived from 1 demonstrated a high power conversion efficiency of 7.2 % (5.0 % for 1).