One-pot synthesis of electron-acceptor composite enables efficient fullerene-free ternary organic solar cells

Jianyun Zhang; Wenrui Liu; Shanshan Chen; Shengjie Xu; Changduk Yang; Xiaozhang Zhu

doi:10.1039/C8TA08961B

One-pot synthesis of electron-acceptor composite enables efficient fullerene-free ternary organic solar cells†

Jianyun Zhang,‡^ac Wenrui Liu,‡^ac Shanshan Chen,^b Shengjie Xu,*^a Changduk Yang

^b and Xiaozhang Zhu

*^ac

Author affiliations

* Corresponding authors

^a Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
E-mail: xushengjie@iccas.ac.cn, xzzhu@iccas.ac.cn

^b Department of Energy Engineering, School of Energy and Chemical Engineering, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), UIsan 689-798, South Korea

^c University of Chinese Academy of Sciences, Beijing 100049, China

Abstract

An effective strategy of “synthesizing an electron-acceptor composite (ZITI-m) by one-pot reaction” to improve photovoltaic performance is proposed. The ZITI-m composite is synthesized by one-pot Knoevenagel reaction of ZIT-2CHO and a mixture of INCN-2F and I-a, from which asymmetrical ZITI-3F and symmetrical ZITI-4F are separated. J71:ZITI-m-based OSC shows the highest PCE of 13.65 ± 0.13% with remarkable PCE of 13.85% than those based on J71:ZITI-3F (12.97 ± 0.15%) and J71:ZITI-4F (13.02 ± 0.13%) blends. The effect of acceptor ratio in the composite on OPV performance indicates that all PCEs of composite system are higher than those of the materials based on pure acceptors with a broad composition tolerance, which is ascribed to the synergistic effect of the ternary blend system.

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DOI: https://doi.org/10.1039/C8TA08961B
Article type: Communication
Submitted: 14 Sep 2018
Accepted: 25 Oct 2018
First published: 27 Oct 2018

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J. Mater. Chem. A, 2018,6, 22519-22525

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One-pot synthesis of electron-acceptor composite enables efficient fullerene-free ternary organic solar cells

J. Zhang, W. Liu, S. Chen, S. Xu, C. Yang and X. Zhu, J. Mater. Chem. A, 2018, 6, 22519 DOI: 10.1039/C8TA08961B

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Journal of Materials Chemistry A

One-pot synthesis of electron-acceptor composite enables efficient fullerene-free ternary organic solar cells†

Abstract

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One-pot synthesis of electron-acceptor composite enables efficient fullerene-free ternary organic solar cells

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