Electrical properties of silicon supersaturated with titanium or vanadium for intermediate band material - Eric García Hemme; D Pastor; I Martil; Rodrigo Garcia Hernansanz; Perla Wahnón Benarroch; G Gonzalez Diaz; J Olea; A del Prado (Proceedings Of The 2013 Spanish Conference On Electron Devices, Cde 2013, 2013)