三维结合非平面双侧链:它们在高效有机太阳能电池中诱导负静电潜力的独特作用
Seonghun Jeong1, Zhe Sun1, Yongjoon Cho1
1School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulju-gun, Ulsan, 44919, South Korea.
Small (Weinheim an der Bergstrasse, Germany)
|August 29, 2025
概括
在有机太阳能电池 (OSC) 中将双侧链引入非富勒烯受体 (NFAs) 会减少能量损失. 这种分子设计通过最大限度地减少非辐射能量损失来提高功率转换效率 (PCE).
科学领域:
- 材料科学
- 有机电子
- 太阳能发电
背景情况:
- 在非富勒烯接受器 (NFA) 基有机太阳能电池 (OSC) 中实现高功率转换效率 (PCE) 需要尽量减少能量损失,特别是非辐射能量损失.
- 目前用于优化能量损失的分子设计策略是复杂的.
研究的目的:
- 研究将3D联非平面双侧链引入Y系列NFA对分子性质和OSC性能的影响.
- 开发一种更简单的分子设计方法,以优化高性能OSC的能量损耗.
主要方法:
- 用双侧链合成一种新型NFA (BPY).
- 使用PM6:BPY和PM6:Y6混合物的OSC的制造和表征.
- 分析分子间相互作用,静电潜力和电荷动态.
主要成果:
- 基于BPY的OSC与基于Y6的OSC相比显示出更高的性能.
- 引入双侧链增强了分子间相互作用和电荷动态.
- 由于开路电压和充电因子的改善,三级OSC (PM6:BTP-eC9与BPY添加剂) 实现了高PCE19.23%.
- 观察到最小的非辐射能量损失,归因于弱化的π-π堆叠.
结论:
- 双侧链有效调节NFA特性,改善分子间相互作用并减少能量损失.
- 这种分子设计为开发高性能有机太阳能电池提供了有希望的策略.
- 这项研究提供了优化非辐射能量损失的见解.
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