Modelling on c-Si/a-Si:H wire solar cells: some key parameters to optimize the photovoltaic performance I. Ngo, M.E. Gueunier-Farret, J. Alvarez and J.P. Kleider EPJ Photovolt., 3 (2012) 30102 Published online: 18 July 2012 DOI: 10.1051/epjpv/2012007