Charge Transfer in Ternary Solar Cells Employing Two Fullerene Derivatives: Where do Electrons Go?

  title={Charge Transfer in Ternary Solar Cells Employing Two Fullerene Derivatives: Where do Electrons Go?},
  author={Andreas Sperlich and Michael Auth and Vladimir Dyakonov},
  journal={Israel Journal of Chemistry},
Earlier reports demonstrated that ternary organic solar cells (OSC) made of donor polymers (D) blended with different mixtures of fullerene acceptors (A:A) performed very similarly. This finding is surprising, as the corresponding fullerene LUMO levels are slightly different, which might result in decisive differences in the charge transfer step. We investigate ternary OSC (D:A:A) made of the donor polymer P3HT with stoichiometric mixtures of different fullerene derivatives, PC60BM:PC70BM and… 

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