German Researchers Double Solar Cell Efficiency via Exciton Splitting

German researchers have detected an ultra-fast molecular interaction enabling 'exciton splitting,' which could double the energy extracted from each photon and reduce thermal waste in solar cells. The claim is based on a translated report from Al Jazeera AR; the underlying study is not yet identified, so the breakthrough's scalability and commercial impact remain uncertain. If confirmed, this could significantly lower solar energy costs and accelerate the energy transition.