High-Performance Ternary Organic Solar Cells Based on Multifluorinated Polymer

Gong-ya Zhang; Hong Chen; Dong-yan Li; Zi-qi Yu; Run-wan Chen; Qing-he Wu

doi:10.11777/j.issn1000-3304.2025.25042

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High-Performance Ternary Organic Solar Cells Based on Multifluorinated Polymer

更新时间：2025-05-26

- High-Performance Ternary Organic Solar Cells Based on Multifluorinated Polymer
- Acta Polymerica Sinica Pages: 1-11(2025)
- 作者机构：
  
  1.汕头大学，化学化工学院广东省有序结构材料的制备与应用重点实验室，汕头 515063
  2.汕头大学，理学院，汕头 515063
- 作者简介：
  
  Qing-he Wu, E-mail: wuqh@stu.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2025.25042
  CLC：
- CSTR：32057.14.GFZXB.2025.7394
- Received：19 February 2025，
  
  Accepted：03 April 2025，
  
  Published Online：26 May 2025，
- 稿件说明：
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张工亚, 陈鸿, 李冬燕, 余紫琪, 陈润婉, 武庆贺. 基于多氟聚合物的高性能三元有机太阳能电池. 高分子学报, doi: 10.11777/j.issn1000-3304.2025.25042

Zhang, G. Y.; Chen, H.; Li, D. Y.; Yu, Z. Q.; Chen, R. W.; Wu, Q. H. High-performance ternary organic solar cells based on multifluorinated polymer. Acta Polymerica Sinica, doi: 10.11777/j.issn1000-3304.2025.25042
张工亚, 陈鸿, 李冬燕, 余紫琪, 陈润婉, 武庆贺. 基于多氟聚合物的高性能三元有机太阳能电池. 高分子学报, doi: 10.11777/j.issn1000-3304.2025.25042 DOI： CSTR： 32057.14.GFZXB.2025.7394.

Zhang, G. Y.; Chen, H.; Li, D. Y.; Yu, Z. Q.; Chen, R. W.; Wu, Q. H. High-performance ternary organic solar cells based on multifluorinated polymer. Acta Polymerica Sinica, doi: 10.11777/j.issn1000-3304.2025.25042 DOI： CSTR： 32057.14.GFZXB.2025.7394.

摘要

三元有机太阳能电池有利于调控光谱吸收、薄膜形貌和降低能量损失，从而实现光电转换效率的提升，然而如何选择第三组分调控光伏器件的性能仍面临挑战. 多氟聚合物结晶性高、与多氟非富勒烯受体材料的相容性好，我们把多氟聚合物PFNT-Cl作为第三组分加入到PNTB-HD:N3体系中，20 wt%的加入量可以提高光伏器件的开路电压、短路电流和填充因子，使光电转换效率从17.77%提高到18.45%，并展现更优的器件稳定性. 研究表明多氟聚合物的加入提高了共混薄膜的载流子迁移率，导致纤维状薄膜形貌的形成. 把多氟聚合物PFNT-Cl引入到其它经典体系 PM6:eC9和D18:L8-BO中，也分别把光电转换效率从17.26%、18.95%提到17.93%和19.59%. 该研究揭示将多氟聚合物作为第三组分是制备高性能三元有机太阳电池的高效策略.

Abstract

The ternary organic solar cells are employed to regulate absorption

film morphology and energy loss

thereby improving the photoelectric conversion efficiency. However

the challenge remains in selecting the third component. High crystallinity of the multifluorinated polymer and good compatibility with the morphology of fluorinated non-fullerene acceptor enable the utilization of the fluorinated polymer PFNT-Cl as the third component added into the PNTB-HD:N3 system. An addition of 20 wt% can increase the open-circuit voltage

short-circuit current and fill factor

increasing the photoelectric conversion efficiency from 17.77% to 18.45% and demonstrating better device stability. The research reveals that the addition of mulfifluorinated polymer improves the charge carrier mobility of the blend films

induces the formation of fibrous film morphology. By introducing the multifluorinated polymer PFNT-Cl into other classic systems

such as PM6:eC9 and D18:L8-BO

the photovoltaic conversion efficiencies have been respectively increased from 17.26% to 17.93% and from 18.95% to 19.59%. This work highlights the use of multifluorinated polymer as the third component as an efficient strategy for preparing high-performance ternary organic solar cells.

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Keywords

references

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