BLOCK COPOLYMER AND PHOTOELECTRIC CONVERSION ELEMENT

摘要

Provided are: a conjugated block copolymer capable of increasing the amount of optical absorption by a photoelectric conversion active layer and controlling the morphology thereof and capable of achieving excellent photoelectric conversion efficiency; and a photoelectric conversion element comprising a composition including an electron-accepting material using this kind of conjugated block polymer. A pi-electron conjugated block copolymer is a pi-electron conjugated block copolymer having a polymer block (A) and a polymer block (B), said blocks comprising monomer units having at least one heterocyclic ring structure selected from a group comprising a fused-ring pi-conjugated structure including at least one thiophene ring in one part of the chemical structure thereof, a fluorene, a carbazole, a dibenzosilole, and a dibenzogermole; said polymer blocks (A and B) having different monomer units from each other.