Donor and acceptor behavior of gold in silicon

Abstract

We have investigated by capacitance transient spectroscopy concentration profiles of gold produced by electrotransport and concentration variations by pairing of gold with iron in p-type silicon. We have found that the line amplitude of the gold donor and that of the gold acceptor have a constant radio independent of gold concentration, diffusion temperature, and of gold-iron-pair concentration. From this result we conclude that the two levels are associated with one gold species in silicon.