Characterization of different surface passivation routes applied to a planar HPGe detectorG. Maggioni, D. R. Napoli, J. Eberth, M. Gelain, S. Carturan, M. G. Grimaldi and S. TatìEur. Phys. J. A, 51 11 (2015) 141DOI: https://doi.org/10.1140/epja/i2015-15141-9