Characterization of different surface passivation routes applied to a planar HPGe detector G. Maggioni, D. R. Napoli, J. Eberth, M. Gelain, S. Carturan, M. G. Grimaldi and S. Tatì Eur. Phys. J. A, 51 11 (2015) 141 Published online: 03 November 2015 DOI: 10.1140/epja/i2015-15141-9