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Keywords:

  • diblock copolymer;
  • P3HT/PCBM;
  • compatibilizer;
  • organic photovoltaics;
  • neutron reflectivity
Thumbnail image of graphical abstract

A conducting diblock copolymer of PS-b-P3HT was added to serve as a compatibilizer in a P3HT/PCBM blend, which improved the power-conversion efficiency from 3.3% to 4.1% due to the enhanced crystallinity, morphology, interface interaction, and depth profile of PCBM.