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基於perylene monoimide的含有糖醇的非富勒烯接受器,具有增加的介电电容率

Peter Fürk¹, Jakob Hofinger², Matiss Reinfelds¹

¹Institute for Chemistry and Technology of Materials (ICTM), NAWI Graz, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria.

Monatshefte fur chemie

|November 29, 2023

概括

带有极性橄乙烯糖醇链的新型烯单一胺接受器显示了改善的介电性质. 这提高了有机太阳能电池的性能,实现了更高的功率转换效率.

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:

烯一胺 (PMI) 衍生物是有机太阳能电池 (OSC) 的有前途的电子受体,因为它们的稳定性和吸收性.
在PMI中,低介电性阻碍了激电解离,并限制了功率转换效率 (PCE).

研究的目的:

合成和评估基于PMI的新型受体-捐赠者-受体 (A-D-A) 分子,具有增强的介电性质.
调查乙烯糖醇 (OEG) 侧链对分子极化性和电容性的影响.
评估这些新材料在OSC设备中的性能.

主要方法:

合成两个AD-A分子:PMI-[C-OEG] (碳醇链接器) 和PMI-[F-OEG] (链接器).
使用克劳西乌斯-莫索蒂关系对电介质性质的表征.
使用新型接受器的OSC设备的制造和测试.

主要成果:

与链类似物相比,OEG侧链的加入显著提高了介电电容量.
允许性在PMI-[C-OEG] (3.17至3.75) 增加了18%,在PMI-[F-OEG] (3.10至3.47) 增加了12%.
有PMI-[C-OEG]的OSC实现了3.92% (3.71%±0.20%) 的PCE记录,而基于PMI-[F-OEG]的细胞达到1.51% (1.21%±0.06%).

结论:

极地OEG侧链有效地增强了基于PMI的非富勒受体的介电性质.
改进的电容性促进了更好的刺激解离,导致OSC中更高的PCE.
这些发现为设计高性能有机太阳能电池材料提供了可行的策略.

关键词:

密度函数理论密度函数理论材料科学是一种材料科学.光学属性光学属性有机光伏是有机的光伏.有机半导体有机半导体

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