Effect of Addition of a Diblock Copolymer on Blend Morphology and Performance of Poly(3-hexylthiophene):Perylene Diimide Solar Cells

The use of a diblock copolymer and a novel dissymmetric perylene leads to improvement in the efficiency of poly(3-hexylthiophene):perylene diimide solar cells. In films with the diblock copolymer, transmission electron micrographs indicate formation of smaller domain sizes, and the photoluminescence of the perylene component is partially quenched.