Exploring the viability of secondary absorber materials in perovskite solar cell structures through computational analysis

Perovskite solar cells (PSCs) are at the forefront of next-generation photovoltaic technology due to their high efficiency and cost-effectiveness. To further enhance their performance, we investigate the integration of a second absorber layer alongside the conventional perovskite layer. Through extensive simulation techniques, we explore the effectiveness of silicon, Copper Indium Gallium Selenide (CIGS), and additional perovskite layers in forming a Double layered absorber perovskite solar cell (DLAPSC) structure. Our analysis of key performance metrics reveals MASnI as the most promising second absorber material, offering superior performance attributed to favorable band alignment and enhanced charge transport properties. In contrast, CIGS and Si layers exhibit inferior performance due to comparatively narrow bandgaps, leading to increased resistive losses. The perovskite/perovskite DLAPSC shows significant promise, achieving a notable power conversion efficiency of 41.56%. This study emphasizes the importance of meticulous parameter optimization and material selection in advancing PSC technology, highlighting the potential of DLAPSCs for renewable energy applications.