"Revolutionary Tandem Cells Push Solar Panel Efficiency Beyond 30%"

Two-layer perovskite/silicon solar cells with efficiencies of over 30% have been developed, surpassing the current efficiency limit of silicon panels. However, the challenge lies in improving the stability of perovskite crystals, which tend to break down over time. By combining the advantages of perovskites' tunable absorption wavelength with silicon's peak absorption towards the red end of the spectrum, researchers aim to develop more efficient and cost-effective photovoltaic devices.