White light generation from CdS nanoparticles illuminated by UV-LED A. M. Suhail, M. J. Khalifa, N. M. Saeed and O. A. Ibrahim Eur. Phys. J. Appl. Phys., 49 3 (2010) 30601 Published online: 03 February 2010 DOI: 10.1051/epjap/2010005