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

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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.

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

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Publication details

The article was received on 14 Sep 2018, accepted on 25 Oct 2018 and first published on 27 Oct 2018


Article type: Communication
DOI: 10.1039/C8TA08961B
Citation: J. Mater. Chem. A, 2018, Advance Article
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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, Advance Article , DOI: 10.1039/C8TA08961B

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