“Bridging” Structure Polymer Strategy for Morphology Regulation and Performance Optimization of Organic Solar Cells Based on the Ternary-component Polymer

Wan-Peng Zhang; Miao-Miao Liu; Meng-Ran Fu; Die Gao; Qiao-Qiao Zhao; Biao Xiao; Ting-Xing Zhao

doi:10.1007/s10118-025-3524-2

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“Bridging” Structure Polymer Strategy for Morphology Regulation and Performance Optimization of Organic Solar Cells Based on the Ternary-component Polymer

RESEARCH ARTICLE | Updated：2026-02-13

- “Bridging” Structure Polymer Strategy for Morphology Regulation and Performance Optimization of Organic Solar Cells Based on the Ternary-component Polymer
- Chinese Journal of Polymer Science Vol. 44, Issue 3, Pages: 813-820(2026)
- Affiliations：
  
  a.State Key Laboratory of Green Papermaking and Resource Recycling, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
  b.Southwest University of Science and Technolog, Mianyang 621010, China
  c.School of Optoelectronic Materials and Technology, Jianghan University, Wuhan 430056, China
- Author bio：
  
  18766192180@163.com (Q.Q.Z.)
  biaoxiao@jhun.edu.cn (B.X.)
  tingxingzhao@swust.edu.cn (T.X.Z.)
- Funds：
- DOI：10.1007/s10118-025-3524-2
  CLC：
- Received：09 October 2025，
  
  Revised：2025-11-23，
  
  Accepted：02 December 2025，
  
  Online First：06 February 2026，
  
  Published：15 March 2026
- Accepted：
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Zhang, W. P.; Liu, M. M.; Fu, M. R.; Gao, D.; Zhao, Q. Q.; Xiao, B.; Zhao, T. X. “Bridging” structure polymer strategy for morphology regulation and performance optimization of organic solar cells based on the ternary-component polymer. Chinese J. Polym. Sci. 2026, 44, 813–820

Wan-Peng Zhang, Miao-Miao Liu, Meng-Ran Fu, et al. “Bridging” Structure Polymer Strategy for Morphology Regulation and Performance Optimization of Organic Solar Cells Based on the Ternary-component Polymer[J]. Chinese Journal of Polymer Science, 2026, 44(3): 813-820.
Zhang, W. P.; Liu, M. M.; Fu, M. R.; Gao, D.; Zhao, Q. Q.; Xiao, B.; Zhao, T. X. “Bridging” structure polymer strategy for morphology regulation and performance optimization of organic solar cells based on the ternary-component polymer. Chinese J. Polym. Sci. 2026, 44, 813–820 DOI： 10.1007/s10118-025-3524-2.

Wan-Peng Zhang, Miao-Miao Liu, Meng-Ran Fu, et al. “Bridging” Structure Polymer Strategy for Morphology Regulation and Performance Optimization of Organic Solar Cells Based on the Ternary-component Polymer[J]. Chinese Journal of Polymer Science, 2026, 44(3): 813-820. DOI： 10.1007/s10118-025-3524-2.

摘要

This study investigates a polymer BT-Cl with a “bridging” structure. As the third component

it effectively reduces large phase separation in D18/N3 binary blend films

proving that the bridging polymer strategy is an effective strategy to reduce phase separation in binary blend films.

Abstract

In this study

a polymer acceptor named BT-Cl with a “bridging” structure

which contained a benzodithiophene unit analogous to that of donor D18

and cyano (CN) groups and heterocyclic structures similar to those in acceptor N3

was synthesized. The “bridging” structure ensured good compatibility of BT-Cl with both D18 and N3

and effectively helped to reduce the large phase separation size of D18/N3 binary blend film when added as a third component. Meanwhile

the addition of BT-Cl to the D18/N3 blend can improve the crystallinity and enhance the light absorption efficiency to some extent. The “bridging” structure also resulted higher lowest unoccupied molecular orbital (LUMO) energy level of BT-Cl than that of N3

which effectively improve the open-circuit voltage (

) of the ternary device and consequently the power conversion efficiency (PCE). This work showed that the polymer with “bridging” structure as the third component was an effective strategy to decrease the large phase separation size.

关键词

Keywords

references

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