Strain-balanced Si1-xGex/Si type II quantum wells for 1.55 µm detection and emission N. Sfina, J.-L. Lazzari, J. Derrien, F. A. d'Avitaya and M. Said Eur. Phys. J. B, 48 2 (2005) 151-156 Published online: 16 December 2005 DOI: 10.1140/epjb/e2005-00389-6