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高性能非融合电子接收器,具有精确控制的侧链化

Kexin Yu^1,2, Tao Zhou³, Wenting Liang¹

¹State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.

ACS applied materials & interfaces

|September 14, 2023

概括

有机太阳能电池中非富勒烯受体的化提高了分子包装和效率. 在DTCBT-F5中优化的侧链化实现了12.7%的功率转换效率,证明了对高性能设备的有希望的战略.

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:

非富勒烯受体 (NFAs) 对于高效的有机太阳能电池 (OSC) 是至关重要的.
NFA的分子包装和侧链工程显著影响设备性能.
化是调整NFAs电子和形态特性的一个关键策略.

研究的目的:

设计和合成新型非融合电子受体 (DTCBT-Fx,x=0,5,9) 与受控侧链化.
系统地研究不同含量对分子包装,能量水平和膜形态学的影响.
优化NFA结构,以改善电荷传输和减少OSC中的重组.

主要方法:

三个不同化度的非化电子受体的合成.
光物理性质,能量水平和分子排序的表征.
使用与PM6供体聚合物合成的NFAs制造和测试有机太阳能电池.
对薄膜形态和电荷载体动态的分析.

主要成果:

侧链化有效调整了光吸收,能量水平,分子排序和膜形态.
DTCBT-F5与PM6供体表现出最佳的混合性,导致电荷重组减少.
在基于DTCBT-F5的设备中观察到更好的电荷载体移动性.
基于DTCBT-F5的OSC实现了12.7%的功率转换效率,超过了控制器 (11.4%和11.6%).

结论:

在非融合电子接受器中精确控制侧链化是提高OSC性能的可行策略.
优化化可以提高材料性能和设备效率.
这项研究为下一代NFA的合理设计提供了宝贵的见解,用于高效的有机太阳能电池.

关键词:

化是指化.混杂性混杂性混杂性分子排序的分子排序.非化电子接受器的电子接受器有机太阳能电池是有机太阳能电池.

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