像刷子这样的四重体接收器实现了超过20%的效率,具有特殊的稳定性和机械强度
Yunpeng Wang1, Xuechun Yang1, Zhi Wang2
1Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen, China.
Angewandte Chemie (International ed. in English)
|February 5, 2026
概括
研究人员开发了一种用于高分子量受体的新合成方法,提高有机太阳能电池 (OSC) 的效率,稳定性和伸展性. 这一突破解决了下一代OSC材料可访问性的局限性.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 聚合物化学 聚合物化学
背景情况:
- 高分子量受体对于高性能有机太阳能电池 (OSC) 是至关重要的.
- 有限的合成可访问性阻碍了这些有前途的材料的大规模应用.
- 现有的接受器通常面临着稳定性和机械强度的挑战.
研究的目的:
- 为具有受控结构的高分子量受体开发一种高效的合成策略.
- 研究分子结构和大小对OSC性能和稳定性的影响.
- 为先进的太阳能电池应用创建内在可拉伸的接受器.
主要方法:
- 使用一种"类似刷子"的合成策略来创建新的受体 (diYCl,teYCl,pYCl).
- 使用这些受体,制造和表征四平面异构连接 (Q-PHJ) OSC.
- 评估设备的效率,操作稳定性和应变下的机械性能.
主要成果:
- 新的受体表现出明确的结构和扩大的分子大小,抑制扩散和增强热力学稳定性.
- 在D18/teYCl Q-PHJ OSC中,teYCl接受器实现了18.02%的功率转换效率 (PCE),具有出色的运行耐久性 (T80> 5000h在65°C).
- 使用teYCl作为共受体在双层Q-PHJ装置中将PCE提升到20.19%,而基于teYCl和pYCl的装置显示出显著的伸展性 (在31%和40%的应变下保持80%的PCE).
结论:
- "刷式"合成为OSCs提供了高分子量受体的实用途径.
- 精确控制的分子设计可以提高效率,稳定性和机械强度.
- 这些发现为开发高性能,稳定和可拉伸的有机太阳能电池铺平了道路.
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