Simultaneous Sb doping and formation of self-aligned TiSi2 by codeposition of Ti and Sb

Abstract
Thin Ti films containing Sb were deposited on silicon by electron‐beam evaporation. The films were annealed in three steps at different temperatures in order to achieve simultaneous Sb doping and self‐aligned TiSi2 formation. Sb behavior during the Ti silicide formation and silicide structures were investigated with Auger electron spectroscopy, transmission electron microscopy, and secondary ion mass spectroscopy. Shallow n+p junctions have been obtained by using a modified self‐aligned TiSi2 process.