调查Y系列电子受体与不同基内侧链的结构性能相关性,以实现高效的有机太阳能电池
Jingyao Kong1, Yufan Zhu1, Bowen Li1
1State Key Laboratory of Powder Metallurgy, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China. hedancsu@csu.edu.cn.
Physical chemistry chemical physics : PCCP
|September 22, 2025
概括
在Y系列非富勒烯接受器 (NFAs) 中的侧链工程影响有机太阳能电池 (OSC) 的性能. 较短的基链提高了可混合性和形态,从而在三元器件中提高了高达19.22%的功率转换效率 (PCE).
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:
- Y系列非富勒烯受体 (NFAs) 对于高效的有机太阳能电池 (OSC) 至关重要.
- 用基修改NFA提高了效率和大面积制造.
- 在NFAs中内部侧链的结构-属性关系仍然未被充分探索.
研究的目的:
- 调查基内侧链长度对NFA特性和OSC性能的影响.
- 通过合理的侧链工程来开发高效的NFA.
- 了解侧链结构如何影响混合性,形态和光伏参数.
主要方法:
- 三种NFAs (Y6-PhC4,Y6-PhC6,Y6-PhC8) 的合成,具有不同的基侧链长度.
- 使用这些NFAs的有机太阳能电池设备的制造和表征.
- 混合膜形态,结晶性,电荷载体动态和能量损失机制的分析.
主要成果:
- 侧链长度对NFA带隙和能量水平的影响最小.
- 随着侧链长度的增加,NFAs和宿主材料 (D18) 之间的可混合性下降.
- Y6-PhC6表现出最佳的结晶性和薄膜形态,从而提高了设备的性能.
- 基于D18:Y6-PhC6的设备实现了17.12%的功率转换效率 (PCE).
- 包含Y6-PhC6的第三级OSC达到PCE的19.22%.
结论:
- 内侧链工程对于优化NFA属性和OSC性能至关重要.
- 基侧链的长度显著影响混合性和形态,影响光伏参数.
- Y6-PhC6代表了高效率有机太阳能电池的有希望的NFA,特别是在三元器件架构中.
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