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Numerical simulation study for efficiency enhancement of doubly graded perovskite solar cell

机译：双层分级钙钛矿太阳能电池效率增强的数值模拟研究

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摘要

In this paper, optimization of perovskite solar cell (PSC) with a computational simulation approach of double graded active layers for attaining an excellent power conversion efficiency (PCE) has been studied. The device is designed before the fluency in charge carriers with the implication of the double carrier transport materials (ETMs and HTMs) in the simulated PSC architecture. The present study further facilitates that the perovskite active materials with optimized thickness are stacked having a bandgap of 1.6 eV for achieving an improved short circuit current density (JSC) of about 20.29 mA/cm(2), exhibiting a high open-circuit voltage (VOC) of 1.1 V, fill factor (FF) about an average of 90% and an excellent power conversion efficiency (PCE) of 19.20%, respectively. Furthermore, the highest external quantum efficiency (EQE), averaging 82%, is also observed for the PSC, precisely in the wavelength span of 380 nm-800 nm. Hence, the static combination of the double carrier transport materials having double graded active layers effectively enhances the optoelectronic parameters and provides a significant pathway for further device optimization in the future.
机译：本文研究了具有用于获得优异的功率转换效率（PCE）的钙钛矿太阳能电池（PSC）的优化。该器件设计在电荷载流子流畅性之前，具有在模拟的PSC架构中的双载波传输材料（ETM和HTMS）的含义。本研究进一步促进了具有优化厚度的钙钛矿活性材料堆叠具有1.6eV的带隙，用于实现约20.29mA / cm（2）的改进的短路电流密度（JSC），表现出高开路电压（ VOC）1.1 V，填充因子（FF）平均平均为90％，优异的功率转换效率（PCE）分别为19.20％。此外，对于PSC，也观察到最高的外部量子效率（EQE），平均82％，精确地在380nm-800nm的波长跨度。因此，具有双分级有源层的双载流材料的静态组合有效地增强了光电参数，并在将来进一步的设备优化提供了显着的途径。

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