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Keywords:

  • organic solar cells;
  • polymers;
  • fullerene derivatives;
  • processing additives;
  • molecular order
Thumbnail image of graphical abstract

The influence of fullerene derivatives (PC60BM and PC70BM) and processing additives on the molecular order of a naphthobisthiadiazole-based polymer (NT) in the blend films differ significantly. This is strongly associated with the bulk heterojunction (BHJ) solar cell performance and affects charge recombination rates and sweep-out dynamics.