Perovskite-based devices are a promising candidate for the next generation of photovoltaic devices. Depending on the selective contacts layers and their interfaces with the absorber, the performance and photoelectric parameters of the perovskite solar cells (PSCs) can be changed. So, it is possible, to achieve highly efficient and stable PSCs by engineering the selective contacts layers and their interface with the perovskite layer. In this study, inorganic CuInS ₂ (CIS) was inserted between the perovskite and Spiro–OMeTAD for decreasing charge recombination at the interfaces. The impact of the CIS and Spiro–OMeTAD on the solar cell photoelectrical parameters is theoretically modeled, and the performance of the solar cells was examined with Solar Cell Capacitance Simulator (SCAPS-1D) under AM1.5G spectrum at 300 K. Results show utilizing a thin layer of CIS can improve the performance of the solar cell. Photovoltaic characterization of the solar cell with CIS shows 18.13%, 73.34%, 1.09 V, $22.69\,\,{\mathrm {mA}}\,\cdot \, {\mathrm {cm}}^{-2}$ , respectively, for efficiency, fill factor (FF), ${V}_{{\mathrm {oc}}}$ , and ${J}_{{\mathrm {sc}}}$ . These results indicated a 7% improvement in efficiency increased and 2% on FF increased compared with the structure without CIS. High-mobility CIS can extract more carriers. It is believed this study can provide guidelines for the design and production of economic and stable PSCs with further efficiency enhancement.

中文翻译：

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利用 CuInS₂ 薄层提高钙钛矿太阳能电池的效率：建模和数值研究

基于钙钛矿的器件是下一代光伏器件的有希望的候选者。根据选择性接触层及其与吸收体的界面，钙钛矿太阳能电池 (PSC) 的性能和光电参数可以改变。因此，通过设计选择性接触层及其与钙钛矿层的界面，可以实现高效且稳定的 PSC。在本研究中，无机 CuInS ₂(CIS) 插入钙钛矿和 Spiro-OMeTAD 之间以减少界面处的电荷复合。从理论上模拟了 CIS 和 Spiro-OMeTAD 对太阳能电池光电参数的影响，并使用太阳能电池电容模拟器 (SCAPS-1D) 在 300 K 的 AM1.5G 光谱下检查太阳能电池的性能。结果表明利用一层薄薄的 CIS 可以提高太阳能电池的性能。具有 CIS 的太阳能电池的光伏特性显示 18.13%、73.34%、1.09 V、 $22.69\,\,{\mathrm {mA}}\,\cdot \, {\mathrm {cm}}^{-2}$ ，分别为效率、填充因子 (FF)、 ${V}_{{\mathrm {oc}}}$ ， 和 ${J}_{{\mathrm {sc}}}$ . 这些结果表明，与没有 CIS 的结构相比，效率提高了 7%，FF 提高了 2%。高移动性 CIS 可以提取更多的载波。相信这项研究可以为设计和生产经济稳定的 PSC 提供指导，并进一步提高效率。