| abstract |
A polymer semiconductor that includes a polythiophene having an M n from about 1,000 to about 400,000 Daltons and derived from benzodithiophene monomer segments of Formula (1) n n n n n n n n n n and at least one divalent linkage providing compound selected from the group consisting of an aromatic or heteroaromatic electron acceptor compound X and an aromatic or heteroaromatic compound Y, wherein R 1 and R 2 are side chains independently selected from the group consisting of a hydrogen atom, a hydrocarbon group, a heteroatom and combinations thereof. |