Highly transparent front electrodes with metal fingers for p-i-n thin-film silicon solar cellsEtienne Moulin, Thomas Christian Mathias Müller, Marek Warzecha, Andre Hoffmann, Ulrich Wilhelm Paetzold and Urs AeberhardEPJ Photovolt., 6 (2015) 60501DOI: https://doi.org/10.1051/epjpv/2015001