Abstract The poor performance of perovskite solar cells is a barrier to them applying to the solar industry. The performance of perovskite solar cells depends on electrons' behavior in their layers. Here, we present a theory based on electron reflection to describe the electrons' behavior in the perovskite solar cells. Researchers reported that spin-coating speed enhancement increases the open-circuit voltage. They attribute this enhancement to a reduction in the layer thickness. However, the morphology layer also affects it. We propose that electrons can reflect from interface while they are traversing the layers of the perovskite solar cells. The results show that the electron reflection from the interface depends on electron kinetic energy, contact angle, the difference between the mean inner potential of two connected layers, and the surface roughness value of the layer. Studies show that the performance of perovskite solar cells can improve by decreasing the difference between the mean inner potential of two connected layers and the surface roughness value of layers.

中文翻译：

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钙钛矿太阳能电池中的电子反射效应

摘要 钙钛矿太阳能电池性能不佳是其应用于太阳能行业的障碍。钙钛矿太阳能电池的性能取决于电子在其层中的行为。在这里，我们提出了一种基于电子反射的理论来描述钙钛矿太阳能电池中的电子行为。研究人员报告说，旋涂速度的提高会增加开路电压。他们将这种增强归因于层厚度的减少。然而，形态层也会影响它。我们建议电子在穿过钙钛矿太阳能电池层时可以从界面反射。结果表明，从界面反射的电子取决于电子动能、接触角、两个连接层的平均内电位差，和层的表面粗糙度值。研究表明，钙钛矿太阳能电池的性能可以通过降低两个连接层的平均内电位与层的表面粗糙度值之间的差异来提高。