Quinoxaline-based Polymers with Asymmetric Aromatic Side Chain Enables 16.27% Efficiency for Organic Solar Cells

Dong-Xu Li; Shu-Fang Li; Cheng-Long Wen; Chao-Yuan Sun; Chang-Zhou Shi; Xin-Xin Xia; Xin-Hui Lu; Li-Hui Jiang; Jun Yuan; Ying-Ping Zou

doi:10.1007/s10118-023-2895-5

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Quinoxaline-based Polymers with Asymmetric Aromatic Side Chain Enables 16.27% Efficiency for Organic Solar Cells

RESEARCH ARTICLE | Updated：2023-06-14

- Quinoxaline-based Polymers with Asymmetric Aromatic Side Chain Enables 16.27% Efficiency for Organic Solar Cells
- Quinoxaline-based Polymers with Asymmetric Aromatic Side Chain Enables 16.27% Efficiency for Organic Solar Cells
- 高分子科学（英文版） 2023年41卷第7期页码：1002-1010
- Affiliations：
  
  a.College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
  b.Department of Physics, The Chinese University of Hong Kong, New Territories, Hong Kong 999077, China
- Author bio：
  
  junyuan@csu.edu.cn (J.Y.)
  yingpingzou@csu.edu.cn (Y.P.Z.)
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (Nos. 21875286 and 52125306). J. Yuan acknowledges the National Natural Science Foundation of China (No. 22005347) and the Natural Science Foundation of Hunan Province (No. 2021JJ20068), L. Jiang acknowledges the Open Sharing Fund for the Large-scale Instruments and Equipments of Central South University (No. CSUZC202218) and the Natural Science Foundation of Hunan Province (No. 2021JJ30793).;Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-023-2895-5.
- DOI：10.1007/s10118-023-2895-5
  中图分类号：
- 收稿：2022-10-02，
  
  修回：2022-10-22，
  
  录用：2022-10-31，
  
  网络首发：2022-12-29，
  
  纸质出版：2023-07-01
- Accepted：
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Li, D. X.; Li, S. F.; Wen, C. L.; Sun, C. Y.; Shi, C. Z.; Xia, X. X.; Lu, X. H.; Jiang, L. H.; Yuan, J.; Zou, Y. P. Quinoxaline-based polymers with asymmetric aromatic side chain enables 16.27% efficiency for organic solar cells. Chinese J. Polym. Sci. 2023, 41, 1002–1010

Dong-Xu Li, Shu-Fang Li, Cheng-Long Wen, et al. Quinoxaline-based Polymers with Asymmetric Aromatic Side Chain Enables 16.27% Efficiency for Organic Solar Cells[J]. Chinese Journal of Polymer Science, 2023, 41(7): 1002-1010.
Li, D. X.; Li, S. F.; Wen, C. L.; Sun, C. Y.; Shi, C. Z.; Xia, X. X.; Lu, X. H.; Jiang, L. H.; Yuan, J.; Zou, Y. P. Quinoxaline-based polymers with asymmetric aromatic side chain enables 16.27% efficiency for organic solar cells. Chinese J. Polym. Sci. 2023, 41, 1002–1010 DOI： 10.1007/s10118-023-2895-5.

Dong-Xu Li, Shu-Fang Li, Cheng-Long Wen, et al. Quinoxaline-based Polymers with Asymmetric Aromatic Side Chain Enables 16.27% Efficiency for Organic Solar Cells[J]. Chinese Journal of Polymer Science, 2023, 41(7): 1002-1010. DOI： 10.1007/s10118-023-2895-5.

摘要

Four quinoxaline-based polymer donors with asymmetric aromatic side chain

TPQ-0F

TPQ-1F

TPQ-1Fi

and TPQ-2F were designed and synthesized. The binary OSC based on TPQ-2F and Y6 achieved an efficient PCE of 16.27 %

which was attributed to balanced hole/electron mobilities

less charge carrier recombination

better excitondissociation and charge transport

and more favorable morphology.

Abstract

In recent years

due to the rapid development of high-performance small molecule acceptor (SMA) materials

the researches on

-type electron donor materials for matching with current efficient SMAs have become important. By means of asymmetric strategies to optimize the energy levels and inter/intramolecular interactions of molecules

we designed and synthesized an asymmetric aromatic side chain quinoxaline-based polymer donor TPQ-0F. Meanwhile

we took advantage of F atom which could form noncovalent interaction and strong electron-withdrawing property

to obtain the optimized quinoxaline-based polymer donors TPQ-1F

TPQ-1Fi and TPQ-2F. Eventually

the binary device based on TPQ-2F achieved an efficient power conversion efficiency (PCE) of 16.27%

which attributed to balanced hole/electron mobilities

less charge carrier recombination

and more favorable aggregation morphology. Our work demonstrates the great potential of asymmetric aromatic side chain quinoxaline-based polymer donors on optimizing the morphology of blending films

improving inter/intramolecular interactions

and subtly tuning energy level

finally for more efficient organic solar cells.

关键词

Keywords

references

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