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American Chemical Society, Macromolecules, 15(48), p. 5148-5154, 2015

DOI: 10.1021/acs.macromol.5b00542

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A Nature-Inspired Conjugated Polymer for High Performance Transistors and Solar Cells

Journal article published in 2015 by Kealan J. Fallon ORCID, Nilushi Wijeyasinghe, Nir Yaacobi-Gross, Raja S. Ashraf ORCID, David M. E. Freeman, Robert G. Palgrave ORCID, Mohammed Al-Hashimi, Tobin J. Marks, Iain McCulloch, Thomas D. Anthopoulos, Hugo Bronstein
This paper is available in a repository.
This paper is available in a repository.

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Abstract

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 cm 2 V −1 s −1 for holes and 0.48 cm 2 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.