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基于伊米达的聚合物捐赠者的协同设计,以提高有机太阳能电池效率

Dongsheng Qiu¹, Waqar Ali Memon¹, Hanjian Lai¹

¹Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China.

The journal of physical chemistry letters

|October 22, 2024

概括

研究人员为有机太阳能电池 (OSC) 开发了新的基于伊米达的聚合物供体. 优化骨干平面性导致MZC8-Cl的功率转换效率 (PCE) 达到创纪录的17.3%,推进了OSC技术.

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:

设计高效的聚合物供体对于有机太阳能电池 (OSC) 来说至关重要.
平衡聚合物骨干平面性对于最佳的电荷传输和防止聚合至关重要.
基于伊米达的受体单元为聚合物供体设计提供了一种新的方法.

研究的目的:

研究骨干平面性对新型基于意达的聚合物捐赠者的电荷传输和功率转换效率 (PCE) 的影响.
合成和表征四个不同的聚合物捐赠者,具有不同的脊柱平面性.
在OSC应用中为基于伊米达的聚合物供体建立一个新的基准.

主要方法:

基于伊米达的受体单元的合成和随后的聚合物供体制造.
调整脊柱平面性通过在烯 π 桥上加入异构性基链.
聚合物属性的表征,包括吸收光谱,能量水平和光伏性能.

主要成果:

四个聚合物供体 (MZC8-F,MZC8-Cl,MZEH-F,MZEH-Cl) 在受控平面性下进行了合成.
由分支基链产生的硬质障碍诱导了脊柱扭曲和蓝色移动的吸收光谱.
MZC8-Cl实现了创纪录的功率转换效率 (PCE) 17.3%,超过了其他合成聚合物.

结论:

聚合物骨干平面性显著影响OSC中的电荷传输和光伏性能.
MZC8-Cl表现出卓越的性能,为基于伊米达的聚合物捐赠者建立了一个新的基准.
这项研究为开发下一代高效有机太阳能电池提供了基本的见解.

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