3rd International Conference on Advanced Engineering and ICT-Convergence (ICAEIC 2019) Oral invitada “Graphene for advanced solar cells” J. Martínez, S. Fernández, J. Cárabe, D. Sanz, J.P. González, J.J. Gandía, A. Molinero, J.M. Barcala,  A. Bosca , J. Pedrós, F. Calle, M.B. Gómez-Mancebo, R. Fernández-Martínez, I. Rucandio,  A. A.J. Quejido. 2019 Jeju Island, Corea del Sur, 11-13 Julio