Ion Implantation of High Doses of Co in Si1−xGex Alloys
1991
The implantation of high doses of Co in Si1−xGex alloys is investigated for several Ge concentrations. The aim of this work is to monitor phase formation, layer formation and crystalline structure of the layers. The samples are evaluated by RBS, SIMS, TEM and sheet resistance measurements. Similar as for the implantation of high doses of Co in Si, buried layer formation of CoSi2 in the Si1−x Gex alloy is observed with a concommitant expulsion of Ge out of the silicide layer.
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