固体添加剂促进侧链排序和分子包装,以提高有机太阳能电池的性能.
Huaipu Cui1,2, Yanfeng Liu1,2, Yu He1,2
1College of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China.
The journal of physical chemistry letters
|December 17, 2025
概括
固体添加剂,如化甲,通过增强活性层形态来提高有机太阳能电池 (OSC) 的性能. 由于促进Y6聚合和改善结晶性,1,8-二甲提供了最高的功率转换效率 (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:
- 固体添加剂对于通过控制活性层形态来优化有机太阳能电池 (OSC) 性能至关重要.
- 固体添加剂影响OSC性能的精确分子机制尚未完全理解.
研究的目的:
- 研究三种化固体添加剂 (1,8-二甲,1,8-二甲,1,8-二甲) 对PM6:Y6混合物的作用.
- 阐明这些添加剂介导的有机太阳能电池性能提升背后的分子水平机制.
主要方法:
- 有机太阳能电池的制造和表征使用PM6:Y6混合物与不同的化纳烯添加剂.
- 使用ex situ原子力显微镜 (AFM) 和in situ光发光 (PL) 光谱来研究形态学和电子性质.
- 采用放牧发生率广角X射线散射 (GIWAXS) 和界面特定总频率生成 (SFG) 谱学来分析晶度和分子排序.
主要成果:
- 这三种素添加剂都提高了有机太阳能电池的功率转换效率 (PCE).
- 1,8-dibromonaphthalene产生了最高的PCE,这归因于由促进Y6聚合驱动的有利相位分离.
- 添加剂导致了增强的结晶性和增加了PM6和Y6活性层中基侧链的排序.
结论:
- 固体添加剂,特别是化甲,可以有效调整有机太阳能电池的形态并提高其性能.
- 该研究提供了对OSC固体添加剂工作机制的基本见解,突出了聚合和分子排序的作用.
- 这些发现为合理设计新型固体添加剂提供了指导,以进一步推进有机太阳能电池技术.
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