通过脊柱衍生的固体添加剂精确的形态控制使二元有机太阳能电池能够达到20%的效率和厚膜兼容性
Lu Wei1, Lingling Zhan1, Yaxin Yang1
1Key Laboratory of Organosilicon Chemistry and Materials Technology of Ministry of Education, College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 311121, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|November 26, 2025
概括
一个新的策略使用聚合物骨干衍生的结晶模板来控制有机太阳能电池 (OSC) 形态. 这种方法提高了设备的效率,并促进了高性能OSC的可扩展制造.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 可再生能源可再生能源是可再生能源.
背景情况:
- 对活性层形态的精确控制对于有机太阳能电池 (OSC) 的发展至关重要.
- 现有的形态控制方法往往缺乏可用于实际应用的通用性.
- 为高绩效的OSC开发可扩展的战略仍然是一个关键的挑战.
研究的目的:
- 提出一个可通用的策略来调节OSCs的活性层形态.
- 研究从聚合物供体骨干中获得的结构性定制结晶模板的使用.
- 提高OSC设备的功率转换效率 (PCE) 和稳定性.
主要方法:
- 一个小分子结晶模板 (BDD-C6) 的设计,通过从聚合物供体骨干 (PM6) 中提取单位.
- 将BDD-C6纳入二元混合物 (PM6:L8-BO和PM6:BTP-eC9) 和对酒精溶解基质的评估.
- 分析兼容性,垂直相位分布,热稳定性,结晶性,结晶动力学和形态特征.
- 使用改性混合物和扩展到其他聚合物系统的OSC设备的制造和表征 (D18).
主要成果:
- 结合BDD-C6导致了有利的垂直相分布,增强了热稳定性和结晶性.
- 该模板延迟了薄膜的形成,促进了聚合物排序,延长了刺激子扩散长度.
- 基于PM6:L8-BO的设备实现了PCE的19.81% (薄膜) 和16.93% (400纳米厚度).
- 基于PM6:BTP-eC9的OSC的效率超过了20%.
- 该策略已成功扩展到D18系统,在D18:L8-BO设备中实现了20.18%的PCE.
结论:
- 骨干衍生结晶模板策略对调节OSC形态有效.
- 这种方法使得高效有机太阳能电池的可扩展制造成为可能.
- 该方法为推进OSC技术向商业可行性提供了一个有希望的途径.
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