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通过采用合金聚合物捐赠体,具有18.34%的效率的分层全聚合物太阳能电池

Hang Zhou¹, Lu Zhang¹, Hongyue Tian¹

¹Advanced Organic Materials and Devices Laboratory, School of Physical Science and Engineering, Beijing Jiaotong University, Beijing, 100044, P. R. China.

Small (Weinheim an der Bergstrasse, Germany)

|February 7, 2025

概括

研究人员通过混合聚合物捐赠者来提高聚合物太阳能电池的效率. 这种方法可以提高分层全聚合物太阳能电池 (LA-PSC) 的功率转换效率 (PCE) 和激子利用率.

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:

层层的全聚合物太阳能电池 (LA-PSC) 是可再生能源的前景.
优化捐赠材料对于提高功率转换效率 (PCE) 至关重要.

研究的目的:

研究混合聚合物供体 (PBQx-TCl和PM1) 对LA-PSC的性能的影响.
了解混合供体系统中PCE改进背后的机制.

主要方法:

顺序旋转涂层方法制造正常和倒置的LA-PSCs.
在PBQx-TCl捐赠层中加入不同的PM1重量%.
设备性能的表征,包括PCE,短路电流 (JSC),开路电压 (VOC) 和填充因子 (FF).
使用外部量子效率 (EQE) 光谱差异分析激子解离和利用效率.

主要成果:

在PBQx-TCl捐赠层中加入30重量%的PM1改善了正常的LA-PSC PCE,从17.20%提高到18.34%.
混合的供体层 (PBQx-TCl:PM1) 形成合金状态,导致VOC增加和激子解离的改善.
在PBQx-TCl/PM1接口上增加了一个额外的激子解离通道,提高了激子利用效率.
在使用合金PBQx-TCl:PM1作为捐赠层的LA-PSC中,获得了超过6.6%的PCE改善.

结论:

将PBQx-TCl和PM1作为聚合物供体进行混合,可以显著提高LA-PSC的性能.
合金供体状态和改善聚合物界面上的激子解离是PCE改善的关键机制.
这一战略为开发高效的有机太阳能电池提供了可行的途径.

关键词:

合金捐赠者合金捐赠者所有聚合物太阳能电池都是聚合物.一层一层的层次.功率转换效率的效率是功率转换效率.

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