Pulsed-laser diffusion of n + contacts and n +-p junctions in high purity germanium for nuclear radiation detectors

Abstract

We report fabrication of thin (< 1 μm) n + contacts, and of n +−p junctions with very low reverse saturation current, on high purity germanium, using a pulsed laser process that requires no heating of the bulk germanium. The junctions appear to be suitable for use in commercial nuclear radiation detectors.