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通过减少能源损失来提高三元有机太阳能电池的效率

Mengni Wang^1,2,3, Yanan Shi^1,2, Ziqi Zhang^1,2

¹Chinese Academy of Sciences (CAS) key laboratory of nanosystem and hierarchical fabrication, National Center for Nanoscience and Technology, Beijing 100190, China. zhangyj@nanoctr.cn.

Nanoscale horizons

|June 22, 2023

概括

将第三个成分Qx2添加到有机太阳能电池 (OSC) 中,可以减少能量损失和增加电压. 这种优化将新三元器件的功率转换效率 (PCE) 提高到18.60%.

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:

减少电压损失对于提高有机太阳能电池 (OSC) 功率转换效率 (PCE) 是至关重要的.
三元混合提供了一种优化活性层属性和设备性能的策略.

研究的目的:

通过减少电压损失来提高有机太阳能电池的PCE.
为了研究非富勒受体 (Qx2) 作为基于PM6:m-BTP-PhC6的二进制装置中的第三个组件的影响.

主要方法:

制造三元有机太阳能电池,将Qx2纳入PM6:m-BTP-PhC6二元混合物中.
活性层形态,分子包装和能量水平的表征.
评估设备性能,包括开路电压 (VOC),短路电流 (JSC),填充系数 (FF) 和功率转换效率 (PCE).

主要成果:

添加Qx2导致了补充吸收,并优化了分子包装和形态.
加入Qx2减少了能量失调,提高了电解发光量子效率,抑制了能量损失 (Eloss).
三元器件在JSC和FF中实现了更高的开放电路电压 (VOC) 和协同增强,达到18.60%的PCE.

结论:

像Qx2这样的第三个组件的战略选择有效地减少了OSC的能量损失.
三级混合策略可以显著提高有机太阳能电池的性能.
这项研究表明了开发高效有机太阳能电池的可行方法.

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