Nature Journal Publication

Tue, 27 Oct 2020 11:14:14 +0100
RSS-News, Teaser

Closing the yellow gap with Eu- and Tb‑doped GaN: one luminescent host resulting in three colours

The invention of highly efficient blue-emitting diodes was a milestone for the development of today's omnipresent white LEDs being enabled by the investigations of Nakamura et al., who were awarded the Nobel prize in 2014. Here we demonstrate the doping of bulk GaN with europium, terbium and the combination of both resulting in intriguing luminescence properties, pushing the role of GaN:Eu,Tb as a chief component in future light emitting diodes. This colour tuning proves that one luminescence host can provide three colours (red, green and orange) and that even the so called "yellow gap” could be closed with a III-nitride.