Patent ID: 7060516

Claim:
A method of forming a layer in a selected area on a wafer in a single growth step, the method comprising: in a single growth step, performing the steps of: forming a mask on a substrate of the wafer defining a selective area growth region coinciding with the selected area, the selective area growth region having a growth enhancement ratio of greater than one; growing a layer on the wafer such that a thickness of the layer in the selective area growth region is greater than a thickness of the layer elsewhere on the wafer; and etching the layer at an etching concentration and for a duration which leaves a thickness of the layer in the selective area growth region and removes the layer from elsewhere on the wafer, wherein the etching concentration is at least a concentration sufficiently high such that etching occurs at near kinetic limited conditions, wherein growing occurs as a result of Metalorganic Epitaxial Chemical Vapor Deposition, and wherein the mask is a dielectric mask.