Patent ID: 7943501
Filing Date: 2011-05-17
Classification: C23C,H01L

Abstract:
1. A method of forming a layer on a substrate comprising: directing a vapor comprising one or more tantalum precursor compounds directly onto one or more silicon-containing surfaces of a substrate, wherein the one or more tantalum precursor compounds are of the formula TaY allowing the vapor comprising the one or more tantalum precursor compounds to chemisorb directly onto the one or more silicon-containing surfaces of the substrate; and directing a vapor comprising one or more silicon precursor compounds to the one or more silicon-containing surfaces of the substrate to form a tantalum silicide layer on the one or more silicon-containing surfaces of the substrate, wherein directing the vapors is accomplished using an atomic layer deposition process comprising a plurality of deposition cycles, with the proviso that the method does not include providing a vapor comprising one or more nitrogen precursor compounds.