In this paper, the optimization, elaboration and characterization of an efficient spectral beam splitter based on a simple RF sputtered ITO/Ag/ITO (IAI) ultra-thin multilayer structure are presented. An experimental investigation assisted by Genetic Algorithm (GA) metaheuristic optimization was carried out to achieve high-performance spectral splitter for tandem solar cell applications. The RF magnetron sputtering method was used to elaborate the optimized IAI structure. The optical and structural properties of the sputtered splitter were also analyzed using UV–Vis-IR spectroscopy and X-ray diffraction (XRD) measurements. It is found that the elaborated splitter structure offers 84% of transparency and a high reflectance of 87% with an optimum cut-off wavelength of 800 nm. This is attributed to the design approach, which leads to promote spectral splitting mechanism by inducing efficient optical modulation. Interestingly, a new Figure of Merit (FoM) parameter, which evaluates the optical splitting performances is proposed. Moreover, a new Perovskite/InGaAs tandem cell is proposed and analyzed to show the impact of the elaborated spectrum splitter on the solar cell efficiency. It is revealed that the investigated solar cell exhibits an improved efficiency approaching 30%. The latter value far surpasses that provided by Perovskite tandem cells. These results indicate that our spectrum splitting approach can open a new pathway towards designing high-performance tandem photovoltaic devices.

本文提出了一种基于简单的射频溅射ITO / Ag / ITO（IAI）超薄多层结构的高效光谱分束器的优化，精细化和表征。进行了遗传算法（GA）元启发式优化辅助的实验研究，以实现串联太阳能电池应用的高性能光谱分离器。射频磁控溅射方法被用来阐述优化的IAI结构。溅射分束器的光学和结构特性也使用UV-Vis-IR光谱和X射线衍射（XRD）测量进行了分析。发现精心制作的分光器结构具有84％的透明度和87％的高反射率，最佳截止波长为800 nm。这归因于设计方法，从而通过诱导有效的光调制来促进光谱分裂机制。有趣的是，提出了一种新的品质因数（FoM）参数，用于评估光分离性能。此外，提出并分析了一种新的钙钛矿/ InGaAs串联电池，以显示精心设计的光谱分离器对太阳能电池效率的影响。结果表明，所研究的太阳能电池具有接近30％的改进效率。后者的价值远远超过钙钛矿串联电池所提供的价值。这些结果表明，我们的频谱分割方法可以为设计高性能串联光伏器件开辟新途径。提出了一种评估分光性能的方法。此外，提出并分析了一种新的钙钛矿/ InGaAs串联电池，以显示精心设计的光谱分离器对太阳能电池效率的影响。结果表明，所研究的太阳能电池具有接近30％的改进效率。后者的价值远远超过钙钛矿串联电池所提供的价值。这些结果表明，我们的频谱分割方法可以为设计高性能串联光伏器件开辟新途径。提出了一种评估分光性能的方法。此外，提出并分析了一种新的钙钛矿/ InGaAs串联电池，以显示精心设计的光谱分离器对太阳能电池效率的影响。结果表明，所研究的太阳能电池具有接近30％的改进效率。后者的价值远远超过钙钛矿串联电池所提供的价值。这些结果表明，我们的频谱分割方法可以为设计高性能串联光伏器件开辟新途径。后者的价值远远超过钙钛矿串联电池所提供的价值。这些结果表明，我们的频谱分割方法可以为设计高性能串联光伏器件开辟新途径。后者的价值远远超过钙钛矿串联电池所提供的价值。这些结果表明，我们的频谱分割方法可以为设计高性能串联光伏器件开辟新途径。