A light-emitting device comprising a substrate-supported Group III nitride semiconductor region having a p-n junction region for injecting carriers into an optically active region, wherein the p-n junction region comprises an aluminum indium gallium nitride region which is compositionally graded for polarization doping.
Elison de Nazareth Matioli, Luca Nela, Catherine Erine, Amirmohammad Miran Zadeh
Jean-Michel Sallese, Adil Koukab