PT Journal
AU Bertoldo, S
   Maggioni, G
   Raniero, W
   Carraro, C
   Riccetto, S
   Sgarbossa, F
   Scarpa, D
   Andrighetto, A
   Mazzolari, A
   Gadea, A
   Napoli, DR
   Napolitani, E
   De Salvador, D
TI New method for the production of thin and stable, segmented n plus contacts in HPGe detectors
SO European Physical Journal A
JI Eur. Phys. J. A
PY 2021
BP 177 - 10pp
VL 57
IS 6
DI 10.1140/epja/s10050-021-00487-8
LA English
AB The realization of pulsed-laser diffused, thin n+ contacts on high purity germanium (HPGe) and their successful segmentation is described. The contacts have been obtained by a laser-induced diffusion of Sb atoms, deposited by sputtering on Ge surface, and then segmented by means of a photolithographic technique. Three small prototypes of gamma ray detectors have been implemented, using the same n+ contact (laser diffused Sb) but with three different geometries and a B implanted p+ contact. Electrical and detection properties of the prototypes have been characterized, showing low leakage currents and good spectroscopy data with different gamma-ray sources. The stability of the detector performance has also been tested subjecting one of the prototypes to a typical annealing treatment.
ER