Structural and optical investigations of AlGaN MQWs grown on a relaxed AlGaN buffer on AlN templates for emission at 280 nm

X. Li, G. Le Gac, S. Bouchoule, Y. El Gmili, G. Patriarche, S. Sundaram, P. Disseix, F. Réveret, J. Leymarie, J. Streque, F. Genty, J. P. Salvestrini, R. D. Dupuis, X. H. Li, P. L. Voss, A. Ougazzaden^*