An H-shaped, small molecular non-fullerene acceptor for efficient organic solar cells with an impressive open-circuit voltage of 1.17 V

Akhil Gupta; Anushri Rananaware; Pedada Srinivasa Rao; Duong Duc La; Ante Bilic; Wanchun Xiang; Jingliang Li; Richard A. Evans; Sidhanath V. Bhosale; Sheshanath V. Bhosale

doi:10.1039/C7QM00084G

An H-shaped, small molecular non-fullerene acceptor for efficient organic solar cells with an impressive open-circuit voltage of 1.17 V†

Akhil Gupta,*^a Anushri Rananaware,^b Pedada Srinivasa Rao,^cd Duong Duc La,^b Ante Bilic,^e Wanchun Xiang,

^f Jingliang Li,^a Richard A. Evans,^g Sidhanath V. Bhosale^c and Sheshanath V. Bhosale*^b

Author affiliations

* Corresponding authors

^a Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, Australia
E-mail: akhil.gupta@deakin.edu.au
Tel: +61 3 5247 9542

^b School of Science, RMIT University, GPO Box 2476, Melbourne, Victoria 3001, Australia
E-mail: sheshanath.bhosale@rmit.edu.au
Tel: +61 3 9925 2680

^c Polymers and Functional Materials Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, Telangana, India

^d Academy of Scientific and Innovative Research (AcSIR), CSIR-IICT, Hyderabad 500007, Telangana, India

^e Data61 CSIRO, Molecular and Materials Modelling, Docklands, Victoria 8012, Australia

^f State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Rd, Wuhan 430070, Hubei, P. R. China

^g CSIRO Manufacturing, Bayview Avenue, Clayton South, Victoria 3169, Australia

Abstract

A bifluorenylidene-functionalized, H-shaped, small molecular non-fullerene electron acceptor, 6,6′,6′′,6′′′-([9,9′-bifluorenylidene]-2,2′,7,7′-tetrayltetrakis(thiophene-5,2-diyl))tetrakis(2,5-bis(2-ethylhexyl)-3-(thiophen-2-yl)-2,5-dihydrop yrrolo[3,4-c]pyrrole-1,4-dione) (coded as H1), which used diketopyrrolopyrrole as terminal functionalities, was designed, synthesized and characterized. H1 displayed a very high optical absorption coefficient, good solubility and thermal stability, promising optoelectronic properties, and high electron mobility, and afforded an encouraging efficiency of 5.42% when paired with the archetypal electron donor poly(3-hexylthiophene).

Materials Chemistry Frontiers

An H-shaped, small molecular non-fullerene acceptor for efficient organic solar cells with an impressive open-circuit voltage of 1.17 V†

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An H-shaped, small molecular non-fullerene acceptor for efficient organic solar cells with an impressive open-circuit voltage of 1.17 V

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