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Keywords:

  • organic electronics;
  • recombination;
  • fill-factor;
  • open-circuit voltage;
  • bulk heterojunction solar cells
Thumbnail image of graphical abstract

Direct measurements of the field-dependent efficiency with which electron-hole pairs are dissociated (1) can be combined with direct measurement of the carrier-density dependent rate at which they subsequently recombine (2) to determine the proportion of carriers which may be usefully extracted (3) for a class of solution-processed organic small-molecule bulk-heterojunction solar cells.