Benzothiadiazole-based Conjugated Polymers for Organic Solar Cells

Chao Wang; Feng Liu; Qiao-Mei Chen; Cheng-Yi Xiao; Yong-Gang Wu; Wei-Wei Li

doi:10.1007/s10118-021-2537-8

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Benzothiadiazole-based Conjugated Polymers for Organic Solar Cells

REIVEW | Updated：2021-01-05

- Benzothiadiazole-based Conjugated Polymers for Organic Solar Cells
- Chinese Journal of Polymer Science Vol. 39, Issue 5, Pages: 525-536(2021)
- Affiliations：
  
  a.College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
  b.Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
- Author bio：
  
  liufeng@hbu.edu.cn (F.L.)
  wuyonggang@hbu.edu.cn (Y.G.W.)
  liweiwei@iccas.ac.cn (W.W.L.)
- Funds：
- DOI：10.1007/s10118-021-2537-8
  CLC：
- Received：23 October 2020，
  
  Revised：2020-11-30，
  
  Accepted：02 December 2020，
  
  Online First：05 January 2021，
  
  Published：01 January 2021
- Accepted：
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Wang, C.; Liu, F.; Chen, Q. M.; Xiao, C. Y.; Wu, Y. G.; Li, W. W. Benzothiadiazole-based conjugated polymers for organic solar cells. Chinese J. Polym. Sci. 2021, 39, 525–536

Chao Wang, Feng Liu, Qiao-Mei Chen, et al. Benzothiadiazole-based Conjugated Polymers for Organic Solar Cells[J]. Chinese Journal of Polymer Science, 2021, 39(5): 525-536.
Wang, C.; Liu, F.; Chen, Q. M.; Xiao, C. Y.; Wu, Y. G.; Li, W. W. Benzothiadiazole-based conjugated polymers for organic solar cells. Chinese J. Polym. Sci. 2021, 39, 525–536 DOI： 10.1007/s10118-021-2537-8.

Chao Wang, Feng Liu, Qiao-Mei Chen, et al. Benzothiadiazole-based Conjugated Polymers for Organic Solar Cells[J]. Chinese Journal of Polymer Science, 2021, 39(5): 525-536. DOI： 10.1007/s10118-021-2537-8.

摘要

Abstract

Benzothiadiazole (BT) is an electron-deficient unit with fused aromatic core

which can be used to construct conjugated polymers for application in organic solar cells (OSCs). In the past twenty years

huge numbers of conjugated polymers based on BT unit have been developed

focusing on the backbone engineering (such as by using different copolymerized building blocks)

side chain engineering (such as by using linear or branch side units)

using heteroatoms (such as F

O and S atoms

and CN group)

etc

. These modifications enable BT-polymers to exhibit distinct absorption spectra (with onset varied from 600 nm to 1000 nm)

different frontier energy levels and crystallinities. As a consequence

BT-polymers have gained much attention in recent years

and can be simultaneously used as electron donor and electron acceptor in OSCs

providing the power conversion efficiencies (PCEs) over 18% and 14% in non-fullerene and all-polymer OSCs. In this article

we provide an overview of BT-polymers for OSCs

from donor to acceptor

via

selecting some typical BT-polymers in different periods. We hope that the summary in this article can invoke the interest to study the BT-polymers toward high performance OSCs

especially with thick active layers that can be potentially used in large-area devices.

关键词

Keywords

references

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