Electronic and optical properties of Cd1-xZnxS nanocrystals N. Safta, A. Sakly, H. Mejri and Y. Bouazra Eur. Phys. J. B, 51 1 (2006) 75-78 Published online: 31 May 2006 DOI: 10.1140/epjb/e2006-00194-9