Author:
Wichert Th.,Keller R.,Deicher M.,Pfeiffer W.,Skudlik H.,Steiner D.
Abstract
AbstractUsing the perturbed γγ angular correlation technique (PAC) the pairing of Cu with the radioactive acceptor atom 111In in Si is detected. Because of the identity of the electric field gradients the so-called X defect, observed after chemomechanical polishing of Si wafers and known of neutralizing acceptor atoms in Si, is identified as a Cu atom. It is also shown that as-delivered Si wafers already contain Cu atoms which neutralize acceptor atoms if the wafers are annealed at 1173 K.
Publisher
Springer Science and Business Media LLC
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