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静电相互作用对垂直形态和高效伪平面异面连接有机太阳能电池中的能量损失的影响

Shiting Lai¹, Yongjie Cui^1,2, Zeng Chen³

¹Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Jiangxi Normal University, 99 Ziyang Avenue, Nanchang, 330022, China.

Advanced materials (Deerfield Beach, Fla.)

|January 27, 2024

概括

研究人员确定了有机太阳能电池 (OSC) 中的分子结构和垂直相分离 (VPS) 形态之间的联系. 优化静电电位差 (∆ESP) 改善了形态,减少了能量损失,并将OSC效率提高到19.09%.

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:

垂直相分离 (VPS) 形态对于有效的电荷传输和有机太阳能电池 (OSC) 中减少重组至关重要.
在伪平面异面连接 (PPHJ) OSC中实现理想的VPS形态缺乏足够的理论指导.
分子结构对VPS形态的影响需要进一步调查.

研究的目的:

在PPHJ OSC中建立分子结构和VPS形态之间的关系.
以分子表面静电电位 (ESP) 作为桥梁来阐明形态进化的机制.
通过控制VPS形态和最大限度地减少能源损失,指导高性能PPHJ OSC的设计.

主要方法:

研究了四个二进制系统,在捐赠者 (Ds) 和接受者 (As) 之间具有变化的静电电位差 (∆ESP).
利用分子表面静电潜力 (ESP) 来将分子结构与VPS形态相关联.
根据已建立的结构形态关系设计和制造了一种三元PPHJ装置.

主要成果:

较小的∆ESP有利于VPS形态,而增加的∆ESP则促进了混合良好的阶段.
较大的∆ESP增强了供体-接受体的混合性,导致非辐射能量损失增加 (ΔE3).
设计的三元装置由于优化了VPS形态和减少了DE3.3,因此实现了19.09%的效率.

结论:

优化∆ESP是一种可行的策略,可以控制PPHJ OSC中的VPS形态.
调∆ESP有效减少非辐射能量损失,进一步提高设备性能.
这项工作为设计具有定制形态的高效性OSC提供了理论框架.

关键词:

电静电潜力的电静电潜力非辐射的能量损失.有机太阳能电池是有机太阳能电池.一个伪平面的异质连接.垂直阶段分离的垂直阶段分离.

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