NEW COPOLYMER, ORGANIC SEMICONDUCTOR MATERIAL, AND ORGANIC ELECTRONIC DEVICE, PHOTOELECTRIC CONVERSION ELEMENT AND SOLAR CELL MODULE EACH USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a new copolymer with high solubility and having absorption in a long wavelength region, that is suitable for a photoelectric conversion element.

SOLUTION: This copolymer has a repeating unit represented by general formula (1) and contains a (substituted) aryl group as a terminal group [wherein R1represents a (substituted) alkyl, (substituted) alkenyl or (substituted) aryl; R2to R5each independently represents hydrogen, halogen, (substituted) alkyl, (substituted) alkenyl or (substituted) aryl].

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