de Boer, W. D. A. M.McGonigle, C.Gregorkiewicz, TomFujiwara, Y.Tanabe, S.Stallinga, Peter2018-12-072018-12-072014-062045-2322http://hdl.handle.net/10400.1/11551We investigate photoluminescence of Eu-related emission in a GaN host consisting of thin layers grown by organometallic vapor-phase epitaxy. By comparing it with a reference sample of Eu-doped Y2O3, we find that the fraction of Eu3+ ions that can emit light upon optical excitation is of the order of 1%. We also measure the quantum yield of the Eu-related photoluminescence and find this to reach (similar to 10%) and (similar to 3%) under continuous wave and pulsed excitation, respectively.engEarth-Doped GanLight-emitting diodeNanocrystalsIonsSitejournal article10.1038/srep05235