期刊
POLYMER
卷 229, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2021.123973
关键词
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资金
- National Key Research and Development Program of China [2019YFC0312101]
- Natural Science Foundation of Shandong Province [ZR2018MEM023]
- Fundamental Research Funds for Central Universities [201822002]
- Open Fund of the State Key Laboratory of Luminescent Materials and Devices (South China University of Technology) [2021skllmd11]
Our study found that ternary strategy can enhance photovoltaic parameters by choosing appropriate fullerene and non-fullerene acceptors, resulting in improved performance in terms of open-circuit voltage, power conversion efficiency, fill factor, and overall efficiency.
Ternary polymer solar cells (PSCs) are one of the most promising high-efficiency photovoltaic devices with advantages of simple solution fabrication and single-junction structure. Herein, we fabricated ternary PSCs with PC71BM as the third component, and ester-polymer PFTzTT-3TC as donor and ITIC as host acceptor. So after treatment-annealing, ternary devices based on PFTzTT-3TC: ITIC: PC71BM (1:1:0.05) exhibited a prominently increased VOC of 0.93 V and PCE of 8.87%. The optimal devices (1:1:0.30) delivers a state of art FF of 71.76%, which is over 22% higher than the value of 58.40% in binary devices. Ternary semitransparent solar cells (1:1:0.25, 15 and 20 nm Ag as cathode) produced a PCE of 6.49% and 7.18% and an AVT of 11.91% and 9.29%, respectively. Our work demonstrated that ternary strategy is a promising solution to improve photovoltaic parameters simultaneously though rational selection of matched fullerene and non-fullerene acceptors.
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