Balancing Aesthetics and Performance of Colored Perovskite-Silicon Tandem Solar Cells Through Simulation-Assisted Design

This research focuses on developing colored perovskite-silicon tandem solar cells that combine high efficiency with aesthetic appeal by employing a simulation-assisted design. Triple cation-based perovskite (CsFAPbIBr) is integrated with polished silicon heterojunction solar cells, considering variations in MgF2 antireflective coating (ARC) properties and angle of incidence. The optimized device architecture, validated with experimental results, exhibits a baseline dark blue reflected color with promising J
sc
and V
oc
values. The produced spectrum of colors from parametric analysis of ARC shows a range of gamut from brown to blue to green. Maximum power penalty or loss is observed at 5.5% for the 4-terminal configuration under perpendicular light incidence relative to baseline. However, the power penalty increased to 8.6% for the 2-terminal device configuration for high saturation and vivid colors. Higher degrees of incidence angles result in colorful devices but increased performance losses. The study highlights the potential of colored tandem solar cells for applications such as building-integrated photovoltaics and power-generating-colored devices for displays.