Synthesis of novel thieno[3,2-b]thienobis(silolothiophene) based low bandgap polymers for organic photovoltaics

Bob C. Schroeder; Raja Shahid Ashraf; Stuart Thomas; Andrew J. P. White; Laure Biniek; Christian B. Nielsen; Weimin Zhang; Zhenggang Huang; Pabitra Shakya Tuladhar; Scott E. Watkins; Thomas D. Anthopoulos; James R. Durrant; Iain McCulloch

doi:10.1039/C2CC33718E

Synthesis of novel thieno[3,2-b]thienobis(silolothiophene) based low bandgap polymers for organic photovoltaics†

Bob C. Schroeder,^a Raja Shahid Ashraf,*^a Stuart Thomas,^b Andrew J. P. White,^a Laure Biniek,^a Christian B. Nielsen,^a Weimin Zhang,^ac Zhenggang Huang,^a Pabitra Shakya Tuladhar,^a Scott E. Watkins,^d Thomas D. Anthopoulos,^b James R. Durrant^a and Iain McCulloch^a

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* Corresponding authors

^a Department of Chemistry and Centre for Plastic Electronics, Imperial College London, London, UK
E-mail: r.ashraf@imperial.ac.uk

^b Department of Physics and Centre for Plastic Electronics, Imperial College London, London, UK

^c Guangxi University for Nationalities, P. R. China

^d CSIRO Materials Science and Engineering, Australia

Abstract

Thieno[3,2-b]thienobis(silolothiophene), a new electron rich hexacyclic monomer has been synthesized and incorporated into three novel donor–acceptor low-bandgap polymers. By carefully choosing the acceptor co-monomer, the energy levels of the polymers could be modulated and high power conversion efficiencies of 5.52% were reached in OPV devices.

Chemical Communications

Synthesis of novel thieno[3,2-b]thienobis(silolothiophene) based low bandgap polymers for organic photovoltaics†

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Synthesis of novel thieno[3,2-b]thienobis(silolothiophene) based low bandgap polymers for organic photovoltaics

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