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

摘要

PROBLEM TO BE SOLVED: To provide a novel copolymer which is highly soluble, has absorption in a long wavelength region, and is suitable for a photoelectric conversion element.;SOLUTION: The copolymer has a repeating unit represented by formula (1) and has a weight-average molecular weight in terms of polystyrene of 2×10⁴-1×10⁷. (R¹ is a substituted/unsubstituted alkyl group, a substituted/unsubstituted alkenyl group, or a substituted/unsubstituted aryl group, and R²-R⁵ are each independently H, a halogen atom, a substituted/unsubstituted alkyl group, a substituted/unsubstituted alkenyl group, or a substituted/unsubstituted aryl group);COPYRIGHT: (C)2015,JPO&INPIT