揭示了分子重量对高效的聚烯太阳能电池的影响
Youle Li1, Xiyue Yuan1, Seoyoung Kim2
1Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, Guangdong, China.
ACS applied materials & interfaces
|June 9, 2023
概括
优化聚乙烯 (PTs) 的分子量可以提高有机太阳能电池 (OSC) 的性能. 较高的分子量可以提高基于PT的OSC的功率转换效率 (PCE) 和稳定性.
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:
- 聚乙烯 (PTs) 是有机太阳能电池 (OSCs) 中的关键电子捐赠体.
- 理性分子设计显著提高了PT太阳能电池功率转换效率 (PCE).
研究的目的:
- 研究分子重量对有机太阳能电池中聚二烯 (P5TCN-F25) 的形态和性能的影响.
- 为了优化分子重量,提高光伏性能和设备稳定性.
主要方法:
- 合成了五批不同分子量 (3087公斤mol-1) 的P5TCN-F25聚烯.
- 混合膜形态和光伏性能的系统研究.
- 阶段分离和分子包装的特征.
主要成果:
- 功率转换效率 (PCE) 随分子量增加而增加,在二元PT太阳能电池中最高达到16.7%.
- 性能改善归因于更细的相位分离和混合膜中更紧的分子包装.
- 较高的分子量与增强的设备稳定性相关.
结论:
- 对高性能有机太阳能电池来说,优化聚乙烯分子量至关重要.
- 这项研究提供了进一步增强PCE在基于PT的OSC的见解.
- 高分子量聚合物提供了改善的设备稳定性.
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