PEAI Boosts the Efficiency of All-Perovskite Tandem Solar Cells to 26.81%

Abstract

Lead perovskite solar cells (Pb-PVK-PV) currently boast an efficiency exceeding 25%. Tandem solar cells, featuring Pb-PVK-PV as the top cell and silicon (Si) solar cells as the bottom cells, have garnered interest for surpassing the efficiency of standalone Pb-PVK-PV. The certified efficiency for such tandem cells has reached 32.5%. Notably, all-perovskite tandem solar cells offer an advantage over configurations with Pb-PVK-PV (top) and inorganic solar cells (bottom) in terms of flexibility, as a low-temperature printable process allows the fabrication of both top and bottom cells. Research has reported an efficiency of 28% for these all-perovskite tandem solar cells.