Using a "multifluorination" strategy, ambipolar donor-acceptor conjugated polymer with hole and electron mobility (μ and μ ) up to 3.94 and 3.50 cm V s , respectively, and unipolar n-type donor-acceptor conjugated polymers with μ up to 4.97 cm V s is synthesized with isoindigo as acceptor units.

Three highly rigid and planar low-bandgap conjugated polymers comprising alternate isoindigo and dithienocarbazole groups are synthesized for the fabrication of high performance polymer solar cells. Power conversion efficiencies of up to 7.2% for conventional devices and 8.2% for inverted devices are demonstrated.