高聚合物分子重量产生太阳能电池,同时提高性能和热稳定性
Sergi Riera-Galindo1, Marta Sanz-Lleó1,2, Edgar Gutiérrez-Fernández3
1Institute of Materials Science of Barcelona ICMAB-CSIC, Campus Universitat Autònoma de Barcelona (UAB), Bellaterra, 08193, Barcelona, Spain.
Small (Weinheim an der Bergstrasse, Germany)
|January 27, 2024
概括
调供体聚合物分子量显著提高有机太阳能电池的效率和稳定性. 更高的分子量导致更厚的活性层的功率转换效率超过10%,改善了热稳定性.
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:
- 有机太阳能电池 (OSC) 需要简单的合成,厚厚的活性层和稳定性来进行大规模生产.
- 捐赠聚合物分子重量是优化OSC性能的一个关键,但尚未探索的参数.
研究的目的:
- 研究供体聚合物分子量对有机太阳能电池性能和稳定性的影响.
- 探索分子重量,形态,电荷传输和设备效率之间的关系.
- 评估有机太阳能电池的热稳定性,使用不同的捐赠聚合物分子重量.
主要方法:
- 合成的PTQ10供体聚合物具有数量范围的平均分子量 (2.454.4 kDa).
- 使用PTQ10和三个非富勒烯受体 (Y6,Y12,IDIC) 制造的有机太阳能电池.
- 分析了设备性能,光谱特性,放牧发生率广角X射线散射 (GIWAXS) 和电荷载体的移动性.
主要成果:
- 观察到,随着分子重量增加,功率转换效率增加了三倍.
- 在使用高分子量PTQ10的200350nm活性层厚度的叶片涂层设备中,使用高分子量PTQ10实现了超过10%的功率转换效率.
- 光电流的改进与增强的电子传输和聚合物对刺激子产生贡献的增加相关.
- 更高的分子量PTQ10导致了由于更高的玻璃过渡温度而提高的热稳定性.
结论:
- 捐赠聚合物分子重量是提高有机太阳能电池效率和稳定的关键参数.
- 高分子量PTQ10可实现高效和稳定的厚膜有机太阳能电池.
- 优化分子重量为提高有机光伏的规模提供了一个有希望的策略.
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