A certified 35.5% perovskite-silicon tandem result shows why stacking absorbers can beat silicon's single-junction limit, while leaving durability and scale as the harder commercial tests.
Perovskite solar cells began at just 3.8% efficiency in 2009. Seventeen years later, a perovskite-silicon tandem cell has hit a certified 35.5% — beyond the theoretical ceiling of any conventional single-junction silicon cell.
Lachlan Brown