Small molecule carbazole-based diketopyrrolopyrroles with tetracyanobutadiene acceptor unit as a non-fullerene acceptor for bulk heterojunction organic solar cells

Yuvraj Patil; Rajneesh Misra; M. L. Keshtov; Ganesh D. Sharma

doi:10.1039/C6TA09607G

Small molecule carbazole-based diketopyrrolopyrroles with tetracyanobutadiene acceptor unit as a non-fullerene acceptor for bulk heterojunction organic solar cells†

Yuvraj Patil,^a Rajneesh Misra,*^a M. L. Keshtov^b and Ganesh D. Sharma

*^c

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* Corresponding authors

^a Department of Chemistry, Indian Institute of Technology, Indore, MP, India
E-mail: rajneeshmisra@iiti.ac.in

^b Institute of Organoelement Compounds of the Russian Academy of Sciences, Vavilova St., 28, 119991 Moscow, Russian Federation

^c Department of Physics, The LNM Institute of Information Technology (Deemed University), Jamdoli, Jaipur, Raj., India
E-mail: gdsharma273@gmail.com

Abstract

Herein, we investigated the photovoltaic properties of carbazole-based diketopyrrolopyrroles with tetracyanobutadiene acceptor units as highly efficient non-fullerene acceptors together with a D–A conjugated polymer, P, as a donor for polymer solar cells. After optimization, i.e. donor to acceptor weight ratio and solvent vapour annealing, the polymer solar cells exhibited power conversion efficiencies of up to 4.86% and 7.19% for DPP7 and DPP8 as acceptors, respectively. These results indicate that slight changes in the chemical structure of the small acceptor molecule significantly increase the efficiency of the device. The design and synthesis of these non-fullerene acceptors with broader absorption spectra extended towards the near infrared region may be key for the further development of high-performance and cost-effective solution-processed organic solar cells.

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DOI: https://doi.org/10.1039/C6TA09607G
Article type: Paper
Submitted: 07 Nov 2016
Accepted: 10 Jan 2017
First published: 11 Jan 2017

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J. Mater. Chem. A, 2017,5, 3311-3319

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Small molecule carbazole-based diketopyrrolopyrroles with tetracyanobutadiene acceptor unit as a non-fullerene acceptor for bulk heterojunction organic solar cells

Y. Patil, R. Misra, M. L. Keshtov and G. D. Sharma, J. Mater. Chem. A, 2017, 5, 3311 DOI: 10.1039/C6TA09607G

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Journal of Materials Chemistry A

Small molecule carbazole-based diketopyrrolopyrroles with tetracyanobutadiene acceptor unit as a non-fullerene acceptor for bulk heterojunction organic solar cells†

Abstract

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Small molecule carbazole-based diketopyrrolopyrroles with tetracyanobutadiene acceptor unit as a non-fullerene acceptor for bulk heterojunction organic solar cells

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