Cu(II)-Doped TiO2 nanoparticles as photoelectrode in dye-sensitized solar cells: Improvement of open-circuit voltage and a light scattering effect - Navas, Javier; Aguilar, Teresa; Fernandez-Lorenzo, Concha; Alcantara, Rodrigo; de los Santos, Desire M.; Sanchez-Coronilla, Antonio; Zorrilla, David; Sanchez-Marquez, Jesus; Martin-Calleja, Joaquin (Science of Advanced Materials, 2014)