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Chemical communications (Cambridge, England)

Benzo[1,2-b:4,5-b']dithiophene-dioxopyrrolothiophen copolymers for high performance solar cells.


PMID 20520865

Abstract

New donor/acceptor polymers PBDTDPT1 and PBDTDPT2 with alternating benzodithiophene and N-alkylated dioxopyrrolo-thiophene were synthesized. The new polymers had deep HOMO levels of -5.42 and -5.44 eV for PBDTDPT1 and PBDTDPT2, respectively. A PBDTDPT2 based BHJ solar cell device achieved a PCE of 4.79% and V(oc) of 0.91 V.