Mobility of copper centers in reverse-biased germanium junction diodes

Abstract
The motion of copper centers in reverse‐biased germanium n+p junctions has been observed using deep level transient spectroscopy. The concentration profile of the doubly ionized copper center is presented as a function of the duration of the electric field application. A mobility of 9.0±4.8×10−12 cm2/Vs at 25 °C was obtained for the Cu2− center.