A Nature-Inspired Conjugated Polymer for High Performance Transistors and Solar Cells
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© 2015 American Chemical Society. A novel, highly soluble chromophore for use in organic electronics based on an indigoid structure is reported. Copolymerization with thiophene affords an extremely narrow band gap polymer with a maximum absorption at ∼800 nm. The novel polymer exhibits high crystallinity and high ambipolar transport in OFET devices of 0.23 cm2 V-1 s-1 for holes and 0.48 cm2 V-1 s-1 for electrons. OPV device efficiencies up to 2.35% with light absorbance up to 950 nm demonstrate the potential for this novel chromophore in near-IR photovoltaics.
author list (cited authors)
Fallon, K. J., Wijeyasinghe, N., Yaacobi-Gross, N., Ashraf, R. S., Freeman, D., Palgrave, R. G., ... Bronstein, H.