CONJUGATED POLYMER, AND ELECTRON DONATING ORGANIC MATERIAL, MATERIAL FOR PHOTOVOLTAIC DEVICE AND PHOTOVOLTAIC DEVICE USING THE CONJUGATED POLYMER

摘要

The objective of the present invention is to provide a photovoltaic element which has high photoelectric conversion efficiency and an electron-donating organic material which comprises a conjugate polymer having a structure of a thieno[3, 4-b]thiophene skeleton with an alkoxycarbonyl group in which a specific alkyl group part is a straight chain alkyl group or an alkanoyl group in which the alkyl group part is a straight chain alkyl group and a benzo[1,2-b: 4, 5-b']dithiophene skeleton with a heteroaryl group.