Planarized Polymer Acceptor Featuring High Electron Mobility for Efficient All-Polymer Solar Cells

Feng Liu; Ri Sun; Cheng-Yu Wang; Liang Zhou; Wen-Li Su; Qi-Hui Yue; Shuai Sun; Wu-Yue Liu; Hai-Jun Fan; Wen-Kai Zhang; Yun-Long Guo; Li-Heng Feng; Xiao-Zhang Zhu

doi:10.1007/s10118-022-2767-4

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Planarized Polymer Acceptor Featuring High Electron Mobility for Efficient All-Polymer Solar Cells

RESEARCH ARTICLE | Updated：2022-07-21

- Planarized Polymer Acceptor Featuring High Electron Mobility for Efficient All-Polymer Solar Cells
- Chinese Journal of Polymer Science Vol. 40, Issue 8, Pages: 968-978(2022)
- Affiliations：
  
  a.School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China
  b.Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  c.Department of Physics and Applied Optics Beijing Area Major Laboratory, Center for Advanced Quantum Studies, Beijing Normal University, Beijing 100875, China
  d.University of Chinese Academy of Sciences, Beijing 100049, China
- Author bio：
  
  liufeng112@sxu.edu.cn (F.L.)
  wkzhang@bnu.edu.cn (W.K.Z.)
  guoyunlong@iccas.ac.cn (Y.L.G.)
  lhfeng@sxu.edu.cn (L.H.F.)
  xzzhu@iccas.ac.cn (X.Z.Z.)
- Funds：
- DOI：10.1007/s10118-022-2767-4
  CLC：
- Received：24 March 2022，
  
  Revised：2022-4-19，
  
  Accepted：20 April 2022，
  
  Online First：22 June 2022，
  
  Published：01 August 2022
- Accepted：
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Liu, F.; Sun, R.; Wang, C. Y.; Zhou, L.; Su, W. L.; Yue, Q. H.; Sun, S.; Liu, W. Y.; Fan, H. J.; Zhang, W. K.; Guo, Y. L.; Feng, L. H.; Zhu, X. Z. Planarized polymer acceptor featuring high electron mobility for efficient all-polymer solar cells. Chinese J. Polym. Sci. 2022, 40, 968–978

Feng Liu, Ri Sun, Cheng-Yu Wang, et al. Planarized Polymer Acceptor Featuring High Electron Mobility for Efficient All-Polymer Solar Cells[J]. Chinese Journal of Polymer Science, 2022, 40(8): 968-978.
Liu, F.; Sun, R.; Wang, C. Y.; Zhou, L.; Su, W. L.; Yue, Q. H.; Sun, S.; Liu, W. Y.; Fan, H. J.; Zhang, W. K.; Guo, Y. L.; Feng, L. H.; Zhu, X. Z. Planarized polymer acceptor featuring high electron mobility for efficient all-polymer solar cells. Chinese J. Polym. Sci. 2022, 40, 968–978 DOI： 10.1007/s10118-022-2767-4.

Feng Liu, Ri Sun, Cheng-Yu Wang, et al. Planarized Polymer Acceptor Featuring High Electron Mobility for Efficient All-Polymer Solar Cells[J]. Chinese Journal of Polymer Science, 2022, 40(8): 968-978. DOI： 10.1007/s10118-022-2767-4.

摘要

A vinyl-bridged polymerized small-molecule acceptor PSV featuring planar conjugated backbone is designed and synthesized. PSV film exhibits favorable intermolecular packing and a high electron mobility of 0.54 cm

−1

was achieved. Such superior optoelectronic properties endow PM6:PSV-based APSCs with high PCEs of 15.73% and 13.3% at thin and thick film

respectively.

Abstract

Significant progress has been achieved for all-polymer solar cells (APSCs) in the last few years by the use of polymerized small molecular acceptors (PSMAs). Developing high electron mobility polymer acceptors has been considered a feasible solution to further improve the photovoltaic performance of APSCs and fabricate thick film devices

which contributed to roll-to-roll printing techniques. In this work

we designed and synthesized PSV

an A-DA’D-A small molecule acceptor-based PSMA with the vinyl group as a bridged linkage to reduce the steric hindrance between the 1

1-dicyanomethylene-3-indanone (IC) terminal group. In comparison with the C―C bond linked polymer acceptor PS

PSV exhibits an almost planar conjugated framework and well-ordered molecular stacking in the thin film. Moreover

PSV exhibits superior n-type semiconducting properties with high electron mobility of up to 0.54 cm

·V

−1

·s

−1

which is the highest value among reported PSMAs. By utilizing PM6 as a polymer donor

PSV-based blend forms a favorable nanomorphology and exhibits high and well-balanced hole/electron mobilities

which is beneficial for exciton separation and charge transport. Consequently

APSCs based on PM6:PSV achieved high power conversion efficiencies of up to 15.73%

with a simultaneously realized high

of 0.923 V

of 23.2 mA·cm

−2

and FF of 0.734. Such superior features enable PSV with excellent thickness-insensitive properties and over 13% PCE was obtained at 300 nm. To the best of our knowledge

the high PCE of 15.73% with excellent electron mobility of 0.54 cm

·V

−1

·s

−1

is the highest values reported for APSCs. These results point to the great significance of developing polymer acceptors with a high electron mobility for boosting the performance of APSCs.

关键词

Keywords

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