Patent ID: 7026243
Filing Date: 2006-04-11
Classification: H01L

Abstract:
1. A method of forming a conductive metal silicide by reaction of metal with silicon, comprising: providing a semiconductor substrate comprising an exposed elemental silicon-containing surface; atomic layer depositing at least one of a nitride, boride, carbide, or oxide-comprising layer onto the exposed elemental silicon-containing surface to a thickness no greater than 15 Angstroms; exposing the layer of thickness no greater than 15 Angstroms to plasma and depositing a conductive reaction layer comprising at least one of a first elemental metal or metal-rich silicide onto the plasma-exposed layer; and reacting said first metal or metal-rich silicide of the conductive reaction layer with elemental silicon of the substrate effective to form a conductive metal silicide-comprising contact region electrically connecting the conductive reaction layer with the substrate.