Research results from Innsbruck, Schwabmünchen, and Düsseldorf demonstrate how the most widely used green phosphors in commercial LEDs can be replaced by representatives of an entirely new class of compounds. Green luminescence, as required for ubiquitous white-light LEDs, currently originates mainly from phosphors with the well-known garnet structure. In times of high energy prices and political tensions that may restrict access to certain raw materials, having an alternative with a lower synthesis temperature and different chemical composition would be highly advantageous.