Fairbrother, A.; Saucedo, E.; Fontane, X.; Izquierdo-Roca, V.; Sylla, D.; Espindola-Rodriguez, M.; Pulgarin-Agudelo, F.A.;Vigil-Galan, O.; Perez-Rodriguez, A. "Preparation of 4.8% efficiency Cu2ZnSnSe4 based solar-energy-materials-and-systems cell by a two step process" Conference Record of the IEEE Photovoltaic Specialists Conference pp. 2679 - 2684. 2012 DOI: 10.1109/PVSC.2012.6318146