通过一种高能电荷转移状态来促进电荷生成的第三级PM6/L8-BO:PC71BM片
Zihao Wen1, Rongkun Zhou2, Zilong Zheng2
1State Key Laboratory of Physical Chemistry of Solid Surfaces, Fujian Provincial Key Lab of Theoretical and Computational Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China.
The journal of physical chemistry letters
|June 25, 2025
概括
将PC71BM等富勒烯衍生物添加到有机太阳能电池 (OSC) 中,为高效的电荷分离创造了新的途径. 这改善了形态和载体运输,提高了三元OSC的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 物理化学 物理化学
- 有机电子 有机电子
背景情况:
- 三级策略提高有机太阳能电池 (OSC) 的功率转换效率 (PCE).
- 第三个组成部分在形态和电荷转移中的确切作用尚未完全理解.
研究的目的:
- 阐明PC71BM作为PM6/L8-BO混合OSC中的第三个成分的功能.
- 研究PC71BM如何影响活性层形态和电荷转移动态.
主要方法:
- 多级计算框架. 多级计算框架.
- 第一原则计算.第一原则计算.
- 分子动力学 (MD) 和动力学蒙特卡洛 (KMC) 模拟.
主要成果:
- PC71BM定位在PM6/L8-BO接口,形成一个高能电荷转移 (H-CT) 状态.
- 通过H-CT进行刺激子解离的新型高效途径显著增加了电荷分离率.
- PC71BM 改善了电子和孔流动性和双极运输,减少了重组.
结论:
- PC71BM在优化界面电荷转移动力学和散装运输中发挥着双重作用.
- 结果为设计高性能三元OSC中的第三个组件提供了指导方针.
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