A benzothiadiazole end capped donor-acceptor based small molecule for organic electronics
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Williams, Evan L
Singh, Samarendra P
Manzhos, Sergei
Dodabalapur, Ananth
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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 cm 2 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%.
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Physical Chemistry Chemical Physics
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15
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40
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© 2013 Royal Society of Chemistry. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version.
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Physical sciences
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Chemistry, Physical
Physics, Atomic, Molecular & Chemical
Chemistry
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Sonar, P; Williams, EL; Singh, SP; Manzhos, S; Dodabalapur, A, A benzothiadiazole end capped donor-acceptor based small molecule for organic electronics, Physical Chemistry Chemical Physics, 2013, 15 (40), pp. 17064-17069