Simulation of Ternary Organic Solar Cells to Study the Effects of Morphology and Material Properties on Power Output
Simulation of Ternary Organic Solar Cells to Study the Effects of Morphology and Material Properties on Power Output
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DOI：
10.32473/ufjur.24.130654
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发表时间：
2022-12
期刊：
影响因子：
--
通讯作者：
A. Giovannone;S. Hershfield
中科院分区：
文献类型：
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作者：
A. Giovannone;S. Hershfield
将三元有机太阳能电池模拟为由电阻和光电二极管组成的3D网格，以研究作为第三种材料的二次受主如何影响整体混合，以优化功率输出。施主和二次受主接口的零电流电压VOC应至少为一次系统的电压。当薄膜厚度和二次受主电导率较高时，由于电流路径的不对称性，二次受主与主受主结合较好。否则，最好将二次受体放在供体旁边，以增加供体：受体界面的数量。这些结果可能最适用于将富勒烯受体添加到施主：非富勒烯受体共混物中，因为它们的潜在好处来自于电导和形态的增加，而不是吸收光谱的增加。
Ternary organic solar cells were simulated as a 3D grid of resistors and photodiodes to study how a secondary acceptor as a third material affects the overall blend to optimize for power output. The voltage at zero current, VOC, of the donor and secondary acceptor interfaces should be at least that of the primary system. When the thickness and secondary acceptor conductivity are high, it is better for a secondary acceptor to stick to the main acceptor due to an asymmetry in current pathways. Otherwise, it is better to place the secondary acceptor next to the donor to increase the amount of donor : acceptor interfaces. These results are likely most applicable to the addition of fullerene acceptors into donor : non-fullerene acceptor blends, since their potential benefits come from an increased conductance and morphology as opposed to increasing the absorption spectra.