Advanced Energy Materials · 2014 · 137 citations · 30 references
Natural SciencesChemistryMaterials ScienceOrganic ChemistryPolymer ChemistryPolymer MaterialsConducting PolymersOrganic Electronic MaterialsOrganic SemiconductorsPhotovoltaic DevicesPhotovoltaic MaterialsSolar CellsConjugated PolymersEnergy Conversion EfficiencyOrganic ElectronicsOrganic PhotovoltaicsOrganic Solar CellsPower ConversionPower Conversion EfficiencySolubility
Two pairs of indacenodithiophene (IDT) and quinoxaline-based copolymers with meta- or para-hexyl-phenyl side chains on the IDT unit are synthesized. The meta-substituted polymers offer better solubility, higher molecular weight for both fluorinated and non-fluorinated copolymers, and a superior photovoltaic performance with a power conversion efficiency of 7.8%. The side-chain design strategy presented is an efficient way to produce high performance conjugated polymers for organic electronics.
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