Effect of modulation-doping on luminescence properties of plasma assisted MBE-grown GaN/AlGaN quantum wellN. Kamata, H. Klausing, F. Fedler, D. Mistele, J. Aderhold, O. K. Semchinova, J. Graul, T. Someya and Y. ArakawaEur. Phys. J. Appl. Phys., 27 1-3 (2004) 271-273DOI: https://doi.org/10.1051/epjap:2004128