Plasma immersion ion implantation of boron for ribbon silicon solar cells K. Derbouz, T. Michel, F. De Moro, Y. Spiegel, F. Torregrosa, C. Belouet and A. Slaoui EPJ Photovolt., 4 (2013) 45105 Published online: 10 September 2013 DOI: 10.1051/epjpv/2013018