含炔键的聚合物给体材料设计合成及在有机太阳能电池中的性能研究

李大伟; 马雪晴; 崔新悦; 陈亚男; 魏楠; 言行; 李翠红; 刘玉强; 刘亚辉; 薄志山

doi:10.11777/j.issn1000-3304.2023.23193

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含炔键的聚合物给体材料设计合成及在有机太阳能电池中的性能研究

研究论文 | 更新时间：2024-01-03

- 含炔键的聚合物给体材料设计合成及在有机太阳能电池中的性能研究
- Design, Synthesis, and Performance Study of Polymer Donor Materials with Alkyne Bonds in Organic Solar Cells
- 高分子学报 2024年55卷第1期页码：48-57
- 作者机构：
  
  1.北京师范大学化学学院能量转换与存储材料北京市重点实验室北京 100875
  2.青岛大学纺织服装学院生物多糖纤维成形与生态纺织国家重点实验室青岛 266071
- 作者简介：
  
  E-mail: licuihong@bnu.edu.cn
  E-mail: yqliu@qdu.edu.cn
  E-mail: liuyh@qdu.edu.cn
  E-mail: zsbo@bnu.edu.cn
- 基金信息：
  
  国家自然科学基金(基金号 ┣22109080;21975031);51933001┫
- DOI：10.11777/j.issn1000-3304.2023.23193
  中图分类号：
- 纸质出版日期：2024-01-20，
  
  网络出版日期：2023-11-14，
  
  收稿日期：2023-07-23，
  
  录用日期：2023-08-29
- 稿件说明：
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李大伟, 马雪晴, 崔新悦, 陈亚男, 魏楠, 言行, 李翠红, 刘玉强, 刘亚辉, 薄志山. 含炔键的聚合物给体材料设计合成及在有机太阳能电池中的性能研究. 高分子学报, 2024, 55(1), 48-57

Li, D. W.; Ma, X. Q.; Cui, X. Y.; Chen, Y. N.; Wei, N; Yan, X.; Li, C. H.; Liu, Y. Q.; Liu, Y. H.; Bo, Z. S. Design, synthesis, and performance study of polymer donor materials with alkyne bonds in organic solar cells. Acta Polymerica Sinica, 2024, 55(1), 48-57
李大伟, 马雪晴, 崔新悦, 陈亚男, 魏楠, 言行, 李翠红, 刘玉强, 刘亚辉, 薄志山. 含炔键的聚合物给体材料设计合成及在有机太阳能电池中的性能研究. 高分子学报, 2024, 55(1), 48-57 DOI： 10.11777/j.issn1000-3304.2023.23193.

Li, D. W.; Ma, X. Q.; Cui, X. Y.; Chen, Y. N.; Wei, N; Yan, X.; Li, C. H.; Liu, Y. Q.; Liu, Y. H.; Bo, Z. S. Design, synthesis, and performance study of polymer donor materials with alkyne bonds in organic solar cells. Acta Polymerica Sinica, 2024, 55(1), 48-57 DOI： 10.11777/j.issn1000-3304.2023.23193.

摘要

利用结构简单、成本低廉的初始原料，设计合成了主链含炔键的聚合物给体材料PBEA-F和PBEA. 由于炔键的强吸电子能力，分子的最高占有轨道能级(HOMO)得以降低，使得聚合物的带隙变宽. 同时，引入炔键的聚合物给体材料与受体小分子材料BTP-eC9-4F共混制备有机太阳能电池器件，可实现较低的非辐射能量损失与高的开路电压(open circuit voltage，

). 最终基于PBEA的器件可得到0.91 eV的

、20.70 mA/cm

的短路电流密度(short-circuit current density，

)和10.39%的能量转化效率(power conversion efficiency，PCE)，远高于PBEA-F器件的PCE (5.50%).

Abstract

We have successfully developed and synthesized polymer donor materials with alkyne bonds incorporated into the main chain

using structurally simple and cost-effective materials. The incorporation of alkyne bonds significantly enhances the electron-withdrawing ability of the polymer backbone

leading to a lower highest occupied molecular orbital (HOMO) energy level and a wider bandgap for the polymer. To further explore the potential applications of these materials

we fabricated organic solar cell (OSC) devices by blending the polymer donor materials with the small molecule acceptor material BTP-eC9-4F. These devices exhibited remarkably low non-radiative energy losses and achieved a high open circuit voltage (

). Notably

the device based on PBEA demonstrated exceptional performance

with a

of 0.91 V

a short-circuit current density (

) of 20.70 mA/cm

and a power conversion efficiency (PCE) of 10.39%. In comparison

the PBEA-F device only achieved a PCE of 5.50%. These results highlight the superior performance of our designed polymer donor materials

which can be attributed to the introduction of alkyne bonds. The enhanced electron-withdrawing ability of the polymer backbone contributes to the reduction of non-radiative energy losses and the improvement of device performance. Our findings not only demonstrate the potential of these materials for high-performance organic solar cells but also underscore the importance of rational material design in achieving efficient energy conversion.

关键词

有机太阳能电池炔键给体材料简单易合成

Keywords

Organic solar cellsAlkyne bondsPolymer donor materialsSimple and cost-effective

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