BODIPY-based conjugated polymers for broadband light sensing and harvesting applications

Cortizo Lacalle, Diego and Howells, Calvyn T. and Gambino, Salvatore and Vilela, Filipe and Vobecka, Zuzana and Findlay, Neil J. and Inigo, Anto R. and Thomson, Stuart A. J. and Skabara, Peter J. and Samuel, Ifor D. W. and Skabara, Peter (2012) BODIPY-based conjugated polymers for broadband light sensing and harvesting applications. Journal of Materials Chemistry, 22 (28). pp. 14119-14126. ISSN 0959-9428

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    Abstract

    The synthesis of novel low band-gap polymers has significantly improved light sensing and harvesting in polymer-fullerene devices. Here the synthesis of two low band-gap polymers based on the 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene core (BODIPY), and either bis(3,4-ethylenedioxythiophene) (bis-EDOT) or its all-sulfur analogue bis(3,4-ethylenedithiathiophene) (bis-EDTT) are described. The polymers demonstrate ambipolar charge transport and are shown to be suitable for broadband light sensing and solar energy harvesting in solution-processable polymer-fullerene devices.