Strain-balanced type-II superlattices for efficient multi-junction solar cells - Gonzalo Martin, Alicia; Utrilla, Antonio D.; Reyes, Daniel F; Braza, Verónica; Llorens, Jose M; Fuertes Marrón, David; Alén, Benito; Ben, Teersa; González, David; Guzman, Alvaro; Hierro, Adrian; Ulloa, J.m. (Scientific Reports, 2017)