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Solar cells prepared using the alternating copolymer shown in the Figure blended with a C 60 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.
Svensson et al. (Mon,) studied this question.