Organic semiconductor polymer, composition for organic semiconductor material, and photovoltaic cell

摘要

An organic semiconductor polymer having a structural unit represented by the following Formula (I), a composition for organic semiconductor material, a photovoltaic cell and a polymer,;wherein X represents Si, S or O; R1 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aromatic heterocyclic group or an oxygen atom; p represents 0, 1 or 2; herein, the bond between X and R1 is such that when X is Si, the bond is a single bond, and when X is S, the bond is a double bond. Furthermore, when X is O, p represents 0.

主权项

1. An organic semiconductor polymer comprising a homopolymer having a structural unit represented by the following Formula (I-1): wherein R1′ and R1″ each independently represents an alkyl group or a copolymer having the structural unit represented by the Formula (I-1) and a structural unit selected from the group consisting of structural units represented by the following Formulae (1), (20), (22), (25) and (II): wherein in Formula (1), R11 and R12 each represents an alkyl group, R13 and R14 each represents a hydrogen atom; wherein in Formula (20), R15 and R16 each represents an alkyl group; wherein in Formula (22), R15 and R16 each represents an alkyl group; wherein in Formula (25), R15 and R16 each represents a hydrogen atom, and Y2 represents a sulfur atom; and wherein Formula (II), Z1 and Z2 each independently represents S; and Y represents C(R21) or N; R represents an alkyl group or an alkylsulfonyl group; and R21 represents a hydrogen atom.