Optical and electrical properties of Sn-Sb-Se chalcogenide thin films M. M. Wakkad, E. Kh. Shokr, H. A. Abd El Ghani and M. A. Awad Eur. Phys. J. Appl. Phys., 43 1 (2008) 23-30 Published online: 30 May 2008 DOI: 10.1051/epjap:2008094