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Keywords:

  • nanocrystals;
  • photovoltaics;
  • polymers;
  • solar cells;
  • quantum dots
Thumbnail image of graphical abstract

A coupled PbS quantum dot film and a PSBTBT:PCBM bulk heterojunction layer contribute comparable photocurrent in a new stacked solar-cell architecture with sensitivity in the near infrared and an efficiency >4%. With a focus on the energy level alignment between components, time-resolved microwave photoconductivity is used to elucidate the charge transport pathways for electrons and holes.