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Issue 40, 2013
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A benzothiadiazole end capped donor–acceptor based small molecule for organic electronics

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Abstract

A benzothiadiazole end-capped small molecule 3,6-bis(5-(benzo[c][1,2,5]thiadiazol-4-yl)thiophen-2-yl)-2,5-bis(2-butyloctyl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione (BO-DPP-BTZ) using a fused aromatic moiety DPP (at the centre) is designed and synthesized. BO-DPP-BTZ is a donor–acceptor–donor (D–A–D) structure which possesses a band gap of 1.6 eV and exhibits a strong solid state ordering inferred from ∼120 nm red shift of the absorption maxima from solution to thin film. Field-effect transistors utilizing a spin coated thin film of BO-DPP-BTZ as an active layer exhibited a hole mobility of 0.06 cm2 V−1 s−1. Solution-processed bulk heterojunction organic photovoltaics employing a blend of BO-DPP-BTZ and [70]PCBM demonstrated a power conversion efficiency of 0.9%.

Graphical abstract: A benzothiadiazole end capped donor–acceptor based small molecule for organic electronics

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Publication details

The article was received on 17 Jul 2013, accepted on 27 Aug 2013 and first published on 28 Aug 2013


Article type: Communication
DOI: 10.1039/C3CP52929K
Citation: Phys. Chem. Chem. Phys., 2013,15, 17064-17069
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    A benzothiadiazole end capped donor–acceptor based small molecule for organic electronics

    P. Sonar, E. L. Williams, S. P. Singh, S. Manzhos and A. Dodabalapur, Phys. Chem. Chem. Phys., 2013, 15, 17064
    DOI: 10.1039/C3CP52929K

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