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通过操纵分子J聚合来提高二进制有机太阳能电池的性能,以扩大吸收并减少能量损失

Panpan Zhang¹, Keteng Zhu¹, Jing Zhang²

¹Laboratory of Advanced Optoelectronic Materials, Suzhou Key Laboratory of Novel Semiconductor Materials and Devices, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu, 215123, P. R. China.

Small (Weinheim an der Bergstrasse, Germany)

|December 15, 2025

概括

使用4-化 (BCB) 和1,8-二氧化 (DIO) 的新型共同添加剂处理通过优化分子聚合和减少能量损失来提高有机太阳能电池 (OSC) 的效率,实现超过20%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:

有机太阳能电池 (OSC) 面临效率限制,原因是光吸收和电压损失之间的权衡,主要是由非辐射重组引起的.
能量差距法则规定,较小的能量差距,有利于吸收,往往导致电压损失增加.

研究的目的:

在基于PM6:BTP-eC9的OSC中开发一种共同添加治疗策略,同时增强光吸收并减少非辐射重组.
为了研究4-化 (BCB) 和1,8-二氧化 (DIO) 对分子聚合和形态学的协同作用.

主要方法:

使用固体BCB和液体DIO的共同添加处理来调节活性层中的分子聚合.
分析添加剂对分子排序,J聚合和光学带隙的影响.
制造OSC设备并描述其光伏性能,包括功率转换效率 (PCE),填充系数 (FF) 和短路电流密度 (JSC).

主要成果:

同添加剂处理优化了分子聚合,导致更广泛的光吸收和减少非辐射重组.
欧共体取得了19.72%的PCE,高FF为81.3%和JSC为28.61 mA cm−2.2.
应用一种抗反射MgF2层进一步提高了JSC到29.62 mA cm-2和PCE到20.34%.

结论:

BCB和DIO的联合处理有效地提高了OSC中的分子排序和电荷动态.
该战略提供了一种切实可行的方法来克服有机光伏的效率限制.
取得的高性能指标证明了这种方法在推进OSC技术方面的潜力.

关键词:

在J-聚合.配合添加剂是一种辅助添加剂.能量损失,能量损失.非辐射重组的非辐射重组.有机太阳能电池是有机太阳能电池.

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