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Proceedings Paper

Novel nature-inspired conjugated polymers for high performance transistors and solar cells (Presentation Recording)
Author(s): Hugo A. Bronstein; Kealan Falon; Nir Yaacobi-Gross; Raja Shahid Ashraf; Iain McCulloch; Thomas D. Anthopoulos

Paper Abstract

Novel, extremely narrow band-gap polymer with a structure based on natural indigo has been synthesised and exhibits high crystallinity, high ambipolar transport in OFET devices, and OPV device efficiencies up to 2.35% with light absorbance up to 950 nm, demonstrating potential in near-IR photovoltaics. We demonstrate that the use of a potentially bio-sustainable monomer unit in a conjugated polymer can give balanced ambipolar OFET mobilities in excess of 0.5 cm2/Vs. This novel monomer, and polymers are synthesized by rigidifying the structure of indigo by condensation with an aromatic acidic acid. The materials display high crystallinity which can be further enhanced by annealing and demonstrate that it can be used as a potentially biosustainable alternative to the commonly used DPP and iso-indigo monomers. We believe this is the first attempt to tackle the issue of sustainability in conjugated polymer synthesis.

Paper Details

Date Published: 5 October 2015
PDF: 1 pages
Proc. SPIE 9568, Organic Field-Effect Transistors XIV; and Organic Sensors and Bioelectronics VIII, 95680Q (5 October 2015); doi: 10.1117/12.2187844
Show Author Affiliations
Hugo A. Bronstein, Univ. College London (United Kingdom)
Kealan Falon, Univ. College London (United Kingdom)
Nir Yaacobi-Gross, Imperial College London (United Kingdom)
Raja Shahid Ashraf, Imperial College London (United Kingdom)
Iain McCulloch, Imperial College London (United Kingdom)
Thomas D. Anthopoulos, Imperial College London (United Kingdom)

Published in SPIE Proceedings Vol. 9568:
Organic Field-Effect Transistors XIV; and Organic Sensors and Bioelectronics VIII
Ioannis Kymissis; Iain McCulloch; Ruth Shinar; Oana D. Jurchescu; Luisa Torsi, Editor(s)

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