Unaxisymmetric Non-Fused Electron Acceptors for Efficient Polymer Solar Cells

Si-Ya Liu; Di Wang; Tian-Jiao Wen; Guan-Qing Zhou; Hai-Ming Zhu; Hong-Zheng Chen; Chang-Zhi Li

doi:10.1007/s10118-022-2750-0

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Unaxisymmetric Non-Fused Electron Acceptors for Efficient Polymer Solar Cells

RESEARCH ARTICLE | Updated：2022-07-21

- Unaxisymmetric Non-Fused Electron Acceptors for Efficient Polymer Solar Cells
- Chinese Journal of Polymer Science Vol. 40, Issue 8, Pages: 944-950(2022)
- Affiliations：
  
  a.State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
  b.Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- Author bio：
  
  czli@zju.edu.cn
- Funds：
- DOI：10.1007/s10118-022-2750-0
  CLC：
- Received：07 March 2022，
  
  Accepted：02 April 2022，
  
  Online First：21 June 2022，
  
  Published：01 August 2022
- Accepted：
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Liu, S. Y.; Wang, D.; Wen, T. J.; Zhou, G. Q.; Zhu, H. M.; Chen, H. Z.; Li, C. Z. Unaxisymmetric non-fused electron acceptors for efficient polymer solar cells. Chinese J. Polym. Sci. 2022, 40, 944–950

Si-Ya Liu, Di Wang, Tian-Jiao Wen, et al. Unaxisymmetric Non-Fused Electron Acceptors for Efficient Polymer Solar Cells[J]. Chinese Journal of Polymer Science, 2022, 40(8): 944-950.
Liu, S. Y.; Wang, D.; Wen, T. J.; Zhou, G. Q.; Zhu, H. M.; Chen, H. Z.; Li, C. Z. Unaxisymmetric non-fused electron acceptors for efficient polymer solar cells. Chinese J. Polym. Sci. 2022, 40, 944–950 DOI： 10.1007/s10118-022-2750-0.

Si-Ya Liu, Di Wang, Tian-Jiao Wen, et al. Unaxisymmetric Non-Fused Electron Acceptors for Efficient Polymer Solar Cells[J]. Chinese Journal of Polymer Science, 2022, 40(8): 944-950. DOI： 10.1007/s10118-022-2750-0.

摘要

Fully non-fused ring acceptors (NFRAs)

p-PTIC4Cl and t-PTIC4Cl

are developed via a concise synthetic route. It is revealed that the tuning of unaxisymmetric aromatic chains could modulate the self-assemble properties of NFRAs

hence optimizing their optoelectronic properties to construct the cost-effective polymer solar cells.

Abstract

To develop photovoltaics embracing the both features of high performance and low cost has drawn attentions of researchers

yet representing the significant challenges. In this work

two non-fused ring acceptors (NFRAs)

namely p-PTIC4Cl and t-PTIC4Cl

were developed

via

a short synthetic route. By tethering unaxisymmetric aromatic chains to thienyl bridge of NFRAs

we revealed that the tuning of aromatic chains allows modulating the self-assembly and stacking of NFRAs in solid

hence influencing their optoelectronic and photovoltaic properties. As results

p-PTIC4Cl

consisting of 3-hexylbenzene with large axial angle to backbone

can achieve superior PCE of 11.30% than that of t-PTIC4Cl with 2-hexylthiophene chains (PCE of 6.49%)

when pairing with polymer donor PBDB-TF. Despite of the only subtle structural difference

the p-PTIC4Cl based blend films possess better exciton dissociation and charge transfer rates

as well as photostability

to those of t-PTIC4Cl based blends.

关键词

Keywords

references

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