France’s CEA-INES and WattByWatt, a Canadian startup, announced a 9 cm2 tandem perovskite-silicon PV cell with an efficiency of 28%, the result of an ongoing research collaboration…
https://www.pv-magazine.com/2025/08/06/cea-ines-wattbywatt-achieve-28-efficiency-for-tandem-perovskite-silicon-solar-cell/
