Patent ID: 7258895
Filing Date: 2007-08-21
Classification: C23C,H01L

Abstract:
1. A method of forming material on a substrate, comprising: positioning a substrate within a deposition chamber; chemisorbing a first species monolayer onto the substrate within the chamber from a gaseous first precursor, the first species monolayer being discontinuously formed over the substrate; within the chamber, exposing the substrate having the discontinuous first species monolayer to a gaseous second precursor different from the first precursor effective to react with the first species to form a second species monolayer and effective to form a reaction product of the second precursor with substrate material not covered by the first species monolayer; and within the chamber, exposing the substrate having the second species monolayer and the reaction product to a third gaseous substance different from the first and second precursors effective to select for removal of the reaction product from the substrate relative to the second species monolayer without depositing material onto the substrate.