no new events·EnergyResearchers achieve record 30.3% efficiency in perovskite tandem solar cells03 Sept 2026·1 event·1 sourceFollowHow events unfoldedFrom the beginning to today03/09/2026, 09:00Researchers achieve record 30.3% efficiency in perovskite tandem solar cells1 source →1 of 1 eventsStoryline coverage1 source · 1/7