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Keywords:

  • Conjugated polymers;
  • Fullerenes;
  • Polyfluorenes, coploymers;
  • Solar cells

Solar cells prepared using the alternating copolymer shown in the Figure blended with a C60 derivative (PCBM) are demonstrated to have a high performance, with a power conversion efficiency of 2.2 % under simulated solar light. The molecular weight of the polymer is low due to limited solubility, and films of the polymer exhibit red-shifted absorption.