Hierarchical Micro/Nanostructured Perovskite/Silicon Tandem Solar Cells with Fully Textured Solution-Processed Conformal Perovskite Absorbers

Here we report the first monolithic hierarchical micro/nanostructured perovskite/silicon tandem solar cell with a solution-processed thin perovskite absorber conformally covering the textured silicon surface, showcasing a certified steady-state power conversion efficiency of 30.1% alongside a record fill factor of 84.5%.