基于非卤溶剂加工的喹喔啉类宽带隙聚合物给体材料：侧链位置异构对光伏性能的影响

张荣玥; 申帅帅; 周圆圆; 李淼; 宋金生

doi:10.14028/j.cnki.1003-3726.2026.26.090

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基于非卤溶剂加工的喹喔啉类宽带隙聚合物给体材料：侧链位置异构对光伏性能的影响

研究论文 | 更新时间：2026-07-06

- 基于非卤溶剂加工的喹喔啉类宽带隙聚合物给体材料：侧链位置异构对光伏性能的影响
- Non-halogenated Solvent Processable Wide Bandgap Polymer Based on Quinoxaline Units with Isomerized Side Chain for High-efficiency Organic Solar Cells
- 高分子通报 2026年39卷第7期页码：1250-1259
- 作者机构：
  
  河南大学纳米科学与工程研究院　开封 475004
  河南师范大学材料科学与工程学院　新乡 453007
- 作者简介：
  
  limiao2020@htu.edu.cn
  songjs@henu.edu.cn
- 基金信息：
  
  国家自然科学基金(22475062;52503229);河南省自然科学基金重点项目(262300421252);河南省高校基础研究重点专项(23ZX002);河南省研究生教育改革与质量提升工程项目(YJS2025AL100)
- DOI：10.14028/j.cnki.1003-3726.2026.26.090
  中图分类号：
- 收稿：2026-02-27，
  
  录用：2026-04-10，
  
  网络首发：2026-06-15，
  
  纸质出版：2026-07-20
- 稿件说明：
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张荣玥, 申帅帅, 周圆圆, 李淼, 宋金生. 基于非卤溶剂加工的喹喔啉类宽带隙聚合物给体材料：侧链位置异构对光伏性能的影响. 高分子通报, 2026, 39(7), 1250–1259.

Zhang, R. Y.; Shen, S. S.; Zhou, Y. Y.; Li, M. ; Song, J. S. Non-halogenated solvent processable wide bandgap polymer based on quinoxaline units with isomerized side chain for high-efficiency organic solar cells. Polym. Bull. (in Chinese), 2026, 39(7), 1250–1259.
张荣玥, 申帅帅, 周圆圆, 李淼, 宋金生. 基于非卤溶剂加工的喹喔啉类宽带隙聚合物给体材料：侧链位置异构对光伏性能的影响. 高分子通报, 2026, 39(7), 1250–1259. DOI： 10.14028/j.cnki.1003-3726.2026.26.090.

Zhang, R. Y.; Shen, S. S.; Zhou, Y. Y.; Li, M. ; Song, J. S. Non-halogenated solvent processable wide bandgap polymer based on quinoxaline units with isomerized side chain for high-efficiency organic solar cells. Polym. Bull. (in Chinese), 2026, 39(7), 1250–1259. DOI： 10.14028/j.cnki.1003-3726.2026.26.090.

摘要

喹喔啉单元由于适中的缺电子性和多位点的可修饰性，被广泛用来构筑高效宽带隙聚合物给体材料。本研究利用苯侧基取代的缺电子喹喔啉单元，设计合成了2种聚合物给体材料PQx-1和PQx-2。苯侧基的引入可以改善材料的溶解性，同时苯侧基上烷氧链位置的异构可以显著影响材料的性能。当烷基链的位置在苯的间位时，聚合物PQx-2展现了更深的HOMO能级、合适的相分离形貌和更高的空穴/电子迁移率。最终，使用非卤溶剂邻二甲苯作为加工溶剂，PQx-2:BTP-eC9器件的PCE可以高达17.16%，显著高于烷氧链对位取代的PQx-1的光伏性能。研究结果表明，侧基位置异构可以有效调控材料的光伏性能，并为环境友好型聚合物给体材料的开发提供了可行的策略。

Abstract

Quinoxaline units have been widely employed in the construction of high-performance wide-bandgap polymer donors due to their moderate electron-deficient characteristic

strong quinoid form and multiple sites for structural modification. In this work

two novel polymer donors

PQx-1 and PQx-2

are designed and synthesized using phenyl-substituted quinoxaline as the electron-deficient unit. The positional isomerism of the alkoxy chain on the phenyl group can significantly influence the material properties. When the alkoxy chain is located at the meta-position of phenyl group

polymer PQx-2 exhibits a deeper HOMO energy level

favorable phase-separated morphology

and higher hole/electron mobilities compared with polymer PQx-1 featuring para-position substituted phenyl group. Consequently

the device based on PQx-2:BTP-eC9 can achieve a remarkable power conversion efficiency (PCE) of 17.16% using the non-halogenated solvent o-xylene as the processing solvent

significantly outperforming the photovoltaic performance of polymer PQx-1. The results demonstrate that positional isomerism of side chains can effectively tune the photovoltaic properties of materials

providing a viable strategy for the development of non-halogenated solvent processable wide bandgap polymer.

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