聚合物-聚合物有机太阳能电池的溶剂蒸汽调节
Michael K H Ho1, Jun-Hua Bai2, Rui-Qi Png1
1Department of Physics, National University of Singapore, Lower Kent Ridge Road, Singapore S117550, Singapore.
ACS applied materials & interfaces
|September 17, 2025
概括
有机太阳能电池 (OSC) 聚合物溶液的热混合延长了加工时间. 溶剂蒸汽调节 (SVC) 通过优化聚合物薄膜形态来进一步提高OSC性能和稳定性.
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:
- 全聚合物有机太阳能电池 (OSC) 提供了有前途的可再生能源解决方案.
- 供体-接受体异构结构的流程优化仍然是OSC的一个关键挑战.
- 目前的加工方法限制了聚合物基太阳能电池的稳定性和效率.
研究的目的:
- 研究热混合和溶剂蒸汽调节 (SVC) 对全聚合物OSC的性能和稳定性的影响.
- 了解SVC如何影响聚合物活性层的形态和光电子特性.
- 开发一种可扩展和具有成本效益的方法来提高OSC电力转换效率 (PCE).
主要方法:
- 使用PM6:PYIT捐赠-接受系统进行全聚合物OSC制造.
- 采用高分子溶液的热混合,以延长的使用寿命.
- 在受控活动比率 (0.01-0.1) 下应用系统溶剂蒸汽调节 (SVC).
- 太阳能电池的性能特征 (PCE,VOC,JSC,FF,变送电阻) 和膜形态 (Vis-NIR光谱).
主要成果:
- 热混合将聚合物溶液的寿命从10分钟延长到超过15小时,而不会影响PCE.
- 使用特定溶剂蒸汽 (例如活性为0.1的甲) 的SVC显著改善了PCE (从13.2%到14.7%) 和冲路阻力 (从4到24kΩcm2).
- SVC优化了聚合物包装和形状顺序,从而提高了光电子性能和抑制了暗泄漏电流.
- 暴露于和溶剂蒸汽降低了细胞性能.
结论:
- 热混合和SVC是提高全聚合物OSC可加工性和性能的有效策略.
- SVC提供了一个可扩展和廉价的途径,以提高OSC的效率和稳定性.
- 这些发现强调了残留溶剂蒸汽在OSC制造和性能中的关键作用.
- 通过SVC改进的分流阻力有利于室内光伏应用在低光条件下.
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