Citation: Luo Mei, Zhu Can, Yuan Jun, Zhou Liuyang, Keshtov M.L., Yu Godovsky D., Zou Yingping. A chlorinated non-fullerene acceptor for efficient polymer solar cells[J]. Chinese Chemical Letters, ;2019, 30(12): 2343-2346. doi: 10.1016/j.cclet.2019.07.023 shu

A chlorinated non-fullerene acceptor for efficient polymer solar cells

Luo Mei ^a ,
Zhu Can ^a ,
Yuan Jun ^a ,
Zhou Liuyang ^a ,
Keshtov M.L. ^b ,
Yu Godovsky D. ^b ,
Zou Yingping ^a,*,

a.
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
b.
Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow 119991, Russia

yingpingzou@csu.edu.cn

Received Date: 17 June 2019
Revised Date: 8 July 2019
Accepted Date: 9 July 2019
Available Online: 9 December 2019

Figures(4)

Improving the performance and reducing the manufacturing costs are the main directions for the development of organic solar cells in the future. Here, the strategy that uses chemical structure modification to optimize the photoelectric properties is reported. A new narrow bandgap (1.30 eV) chlorinated non-fullerene electron acceptor (Y15), based on benzo[d] [1, 2, 3] triazole triazole with two 3-undecylthieno[2', 3':4, 5] thieno[3, 2-b] pyrrole fused -7-heterocyclic ring, with absorption edge extending to the near-infrared (NIR) region, namely A-DA'D-A type structure, is designed and synthesized. Its electrochemical and optoelectronic properties are systematically investigated. Benefitting from its NIR light harvesting, the fabricated photovoltaic devices based on Y15 deliver a high power conversion efficiency (PCE) of 14.13%, when blending with a wide bandgap polymer donor PM6. Our results show that the A-DA'D-A type molecular design and application of near-infrared electron acceptors have the potential to further improve the PCE of polymer solar cells (PSCs).
- Electron acceptor Y15,
- Chlorinated,
- Non-fullerene electron acceptors,
- Efficient polymer solar cells,
- Narrow bandgap
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