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Issue 4, 2018
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Efficient ternary non-fullerene polymer solar cells with PCE of 11.92% and FF of 76.5%

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Abstract

Non-fullerene polymer solar cells (PSCs) attract more attention due to the constantly refreshed power conversion efficiency (PCE) based on the versatile non-fullerene acceptors. In this work, PCEs of 10.51% and 11.02% were obtained for two kinds of non-fullerene PSC with IDT6CN-M or ITCPTC as the acceptor and PBDB-T as the donor. ITCPTC has a relatively narrow bandgap and a high absorption coefficient compared with IDT6CN-M, which explains well the relatively large short-circuit current density of 17.44 mA cm−2 for the ITCPTC based binary PSCs. Meanwhile, the IDT6CN-M based binary PSCs exhibit a relatively high fill factor (FF) of 75.3% and an open-circuit voltage of 0.915 V. A PCE of 11.92% and a FF of 76.5% were achieved for the ternary PSCs with 60 wt% ITCPTC content in the acceptors, which should be attributed to the enhanced photon harvesting and their good compatibility for a synergistic improvement of exciton utilization and charge transport in the ternary active layers. The FF of 76.5% is among the top values of ternary non-fullerene PSCs.

Graphical abstract: Efficient ternary non-fullerene polymer solar cells with PCE of 11.92% and FF of 76.5%

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Publication details

The article was received on 22 Jan 2018, accepted on 16 Feb 2018 and first published on 16 Feb 2018


Article type: Paper
DOI: 10.1039/C8EE00215K
Citation: Energy Environ. Sci., 2018,11, 841-849
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    Efficient ternary non-fullerene polymer solar cells with PCE of 11.92% and FF of 76.5%

    M. Zhang, W. Gao, F. Zhang, Y. Mi, W. Wang, Q. An, J. Wang, X. Ma, J. Miao, Z. Hu, X. Liu, J. Zhang and C. Yang, Energy Environ. Sci., 2018, 11, 841
    DOI: 10.1039/C8EE00215K

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