Interfacial Dipole in Organic and Perovskite Solar Cells,Journal of the American Chemical Society

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Interfacial Dipole in Organic and Perovskite Solar Cells
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-09-22 , DOI: 10.1021/jacs.0c07439
Qi Chen _{1,

2} , Cheng Wang ₁ , Yaowen Li ₃ , Liwei Chen _{1,

4}

Affiliation

Incorporating dipole interlayer has been one of the most crucial interfacial engineering strategies in organic and perovskite solar cells. Interfacial dipole brings steep shifts in electronic band structure across interfaces and thus effectively tunes charge carrier transport. However, the origin of interfacial dipole and its effects on device performance are not entirely clear, or even controversial in some cases. Here we devote this perspective to identifying the electric dipole of various interlayers and correlating interfacial dipole with device performance on the basis of classic semiconductor device theory. Nevertheless, it will be important to further consider the chemical nature of interlayers beyond the simplified model of interfacial dipole to develop a full understanding of interfacial structure, energy band and device operation mechanism. In-situ and in-operando characterizations are encouraged to be integrated with numerical simulations in future studies.

中文翻译：

有机和钙钛矿太阳能电池中的界面偶极子

引入偶极夹层一直是有机和钙钛矿太阳能电池中最重要的界面工程策略之一。界面偶极子使跨界面的电子能带结构发生急剧变化，从而有效地调整电荷载流子传输。然而，界面偶极子的起源及其对器件性能的影响并不完全清楚，在某些情况下甚至存在争议。在这里，我们致力于根据经典半导体器件理论识别各种夹层的电偶极子并将界面偶极子与器件性能相关联。然而，重要的是进一步考虑界面偶极子简化模型之外的夹层的化学性质，以全面了解界面结构，能带和器件运行机制。鼓励原位和操作中表征与未来研究中的数值模拟相结合。

更新日期：2020-09-22

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