四极体固体添加剂工程诱导的与捐赠者和接受者的相互作用使有机太阳能电池能够达到19.6%的效率
Yawei Miao1,2, Qun Li1, Tingting Xue1
1College of Chemistry and Chemical Engineering, Taishan University, Taian 271000, China.
ACS applied materials & interfaces
|February 9, 2026
概括
四极固体添加剂,如M3,通过优化形态来提高有机太阳能电池 (OSC) 的性能. 这项研究探讨了M3的情况.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 太阳能光伏发电是如何实现的
背景情况:
- 有机太阳能电池 (OSC) 的性能严重依赖于活性层形态,影响激子解离和电荷传输.
- 固体添加剂是OSC调整分子包装和混合物形态的关键,但对四极添加剂的研究是有限的.
- 了解四极点对形态和设备性能的影响对于推进OSC技术至关重要.
研究的目的:
- 设计和合成一个四极固体添加剂,2,5-di(thiophen-2-yl) pyrazine (M3),研究其对OSC性能的影响.
- 阐明四极时刻影响活性层形态和电荷转移过程的机制.
- 探索四极体固体添加剂工程的潜力,以优化OSC形态和设备效率.
主要方法:
- 四极体固体添加剂M3的合成,具有平面配置和显著的四极体矩 (Qzz = -108.35 D).
- 将M3纳入有机太阳能电池的活性层 (PM6:BTP-eC9和PM6:BTP-eC9:L8-BO).
- 分析M3对分子聚合,包装,结晶行为,纳米尺度形态和电荷转移的影响.
主要成果:
- M3有效调节了分子聚合和包装,优化了纳米尺度形态,并促进了电荷转移.
- 经M3处理的PM6:BTP-eC9设备实现了19.16%的功率转换效率 (PCE).
- 使用M3处理的PM6:BTP-eC9:L8-BO设备显示出一个突出的PCE19.62%.
结论:
- 四极固体添加剂,以M3为例,为提高OSC性能提供了一个有希望的策略.
- M3显著的四极矩促进了分子间相互作用,从而改善了形态和电荷传输.
- 这项工作为设计四极添加剂提供了宝贵的见解,以优化OSC形态和设备效率.
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