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Keywords:

  • Solar cells;
  • Polymers;
  • Interfaces;
  • Self-assembled monolayers;
  • Electrodes
Thumbnail image of graphical abstract

A simple solution-deposition method is developed to fabricate polymer solar cells that comprise a SAM-modified ZnO/metal bilayer cathode. The contact properties between the ZnO and metal can be enhanced by interfacial modification with a series of carboxylic acid-based dipolar SAMs. This finding provides a new strategy for very effective contact engineering in organic optoelectronic devices.