Record Open‐Circuit Voltage in Perovskite/PERC Tandem Solar Cells via Novel a ‐Si Interlayer Passivation

and PCE reported for PST cells with PERC-based p-type silicon bottom cell technology. Even after 1000 hours of damp heat testing at 85 °C and 85% relative humidity, the device with dual passivation maintained 90.70% of its initial PCE.