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通过绿色溶剂处理有机太阳能电池的基侧链工程来调节供体聚合

Tongzi Li¹, Ziyue Zhang¹, Xuelong Dai¹

¹State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.

ACS applied materials & interfaces

|August 28, 2025

概括

研究人员使用绿色溶剂开发了新的有机太阳能电池. 长链的分子设计改善了形态,并提高了可持续能源的功率转换效率超过60%.

科学领域:

材料科学
有机电子
可持续的化学

背景情况:

有机太阳能电池的可扩展制造需要用环保替代品取代有毒的素溶剂.
使用非化溶剂处理OSC通常会导致由于无控制的供体聚合而导致形态不佳和设备性能受限.

研究的目的:

在绿色加工条件下开发分子设计策略,以有效控制OSC的形态.
用环境良好的溶剂制造的高性能OSC.

主要方法:

通过随机共聚化D18-Cl与DTBT-HD单元合成了一系列聚物 (D18-Cl-xHD),引入长偶数链.
通过理性侧链工程微调的聚合物溶解性和聚合行为.
从o-xylene中处理了优化的聚合物 (D18-Cl-10HD),并描述了其性能和形态.

主要成果:

优化的聚物D18-Cl-10HD在从o-xylen加工时实现了18.1%的功率转换效率,比D18-Cl基准提高了60%以上.
形态分析显示D18-Cl-10HD形成了一个有序的双连续网络,具有增强的分子包装和域纯度.
这些形态改进促进了高效的激素解离和电荷传输.

结论:

该研究提出了一个广泛适用的战略,用于设计OSC的绿色溶剂兼容材料.
建立了对有机半导体侧链调节相位行为的更深入的机制理解.
在有机太阳能电池领域弥合了高效率和可持续制造之间的差距.

关键词:

聚合方式形态学非化溶剂有机太阳能电池聚合物化

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