增强电静电潜力,通过三极共聚化战略开发高性能聚合物捐赠体.
Xintong Shi1, Jiawei Huang1, Xiaoping Wang1
1School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, 156 Ke Jia Avenue, Ganzhou 341000, P.R. China.
ACS applied materials & interfaces
|April 11, 2025
概括
在聚合物捐赠者中引入第三个成分可以提高有机太阳能电池的性能. 这种新的方法增强了分子秩序和分子间相互作用,使得聚合物太阳能电池的功率转换效率 (PCE) 为19.40%.
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:
- 三元共聚化是优化有机光伏中的聚合物供体特性的一个关键策略.
- 然而,这种方法往往会导致分子乱,并增加了聚合物中主链.
- 序列分布中断会对聚合物太阳能电池的性能产生负面影响.
研究的目的:
- 通过结合具有大双极矩的第三个组件来开发新的聚合物供体.
- 为了研究这种新单元对分子秩序,可混合性和光伏性能的影响.
- 通过改进的聚合物设计,提高有机太阳能电池的性能.
主要方法:
- 通过三元共聚合合成了两个聚合物供体,将缺电子BTP单元纳入PM6骨干.
- 用结晶性,静电电位,可混合性和分子包装来表征得到的聚合物.
- 制造和测试有机太阳能电池 (OSCs) 使用开发的聚合物捐赠体.
主要成果:
- 加入BTP单元显著提高了聚合物的晶度和静电潜力.
- 与PM6.6相比,新型聚合物表现出更好的可混合性和更有序的分子包装.
- 基于PY5:L8-BO的设备的最大功率转换效率 (PCE) 达到了19.40%.
结论:
- 引入具有较大的二极子时刻的第三个组件有效地抑制了terpolymer捐赠者的主链乱.
- 聚合物供体和受体之间的增强分子间相互作用有助于提高设备性能.
- 这一战略为开发有机光伏的高性能聚合物供体提供了一条新的途径.
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