Wide band gap diketopyrrolopyrrole-based conjugated polymers incorporating biphenyl units applied in polymer solar cells?

Chemical Communications Pub Date: 2013-11-07 DOI: 10.1039/C3CC47868H

Abstract

Incorporating biphenyls as co-monomers in electron-deficient diketopyrrolopyrrole (DPP) conjugated polymers enables widening the optical band gap to 1.70 eV. Power conversion efficiencies of 3.7–5.7% and high open-circuit voltages of 0.80–0.93 V are obtained in solar cells based on these wide band gap DPP polymers.

Graphical abstract: Wide band gap diketopyrrolopyrrole-based conjugated polymers incorporating biphenyl units applied in polymer solar cells
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