调整活性层形态通过三级共聚合与不对称的索单元作为第三个组件,以提高光伏性能
Dianpeng Chen1, Peng Li2, Yawen Zheng1
1School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, P. R. China.
ACS applied materials & interfaces
|March 18, 2025
概括
使用子[d]醇单元的三元共聚化优化有机太阳能电池形态. 这一策略提高了相位分离和设备性能,实现了16.57%的功率转换效率.
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:
- 控制活性层形态和相分离对于高效的有机太阳能电池 (OSC) 来说至关重要.
- 在常见的OSC混合中强大的聚合可以限制性能.
- 三元共聚化提供了一种调整材料性质的策略.
研究的目的:
- 优化有机太阳能电池活性层的相位分离和表面形态.
- 通过三元共聚合来提高有机太阳能电池的性能.
- 为了研究将[d]thiazole单元纳入材料性能和设备效率的影响.
主要方法:
- 通过三元共聚合合成三种聚合物 (PMz-5,PMz-10,PMz-20).
- 将一个不对称的[d]thiazole (BTz) 单元纳入聚合物骨干中.
- 使用合成的高聚合物制造有机太阳能电池设备的制造和表征.
主要成果:
- 与二元混合物相比,特聚合物混合膜表现出改善的表面形态和优化相位分离.
- 纳入BTz单元降低了最高占成的分子轨道 (HOMO) 水平,促进了电荷传输.
- 冠军的PMz-5:L8-BO设备实现了16.57%的高功率转换效率,具有出色的开路电压 (0.886V),短路电流密度 (25.49mA cm-2),和填充因子 (73.35%).
结论:
- 与BTz单位的三元共聚合是一种提高OSC性能的有效策略.
- 开发的聚合物提供了改进的形态控制和充电传输特性.
- 这种方法为开发高效的有机太阳能电池提供了一种简单的方法.
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