The objective of the present invention is to provide a photovoltaic device 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.
本发明的目的是提供一种光电转换效率高的光伏装置和一种电子负载有机材料,该材料包括一种共轭聚合物,其结构为
噻吩并[3, 4-b]
噻吩骨架上带有烷氧羰基(其中特定烷基部分为直链烷基或烷酰基)和苯并[1,2-b: 4, 5-b']二
噻吩骨架上带有杂芳基。