Patent ID: 7396777

Claim:
A method of fabricating a high-k dielectric layer comprising the sequential steps of: forming a stacked dielectric layer by forming a first dielectric layer of a first dielectric material on a semiconductor substrate using an atomic layer deposition (ALD) method; and thereafter forming a second dielectric layer of a second dielectric material on the first dielectric layer using an atomic layer deposition (ALD) method, wherein one of said first and second dielectric materials is a metal dielectric material and the other of said first and second dielectric materials is selected from the group consisting of silicon oxide and silicon oxynitride; and performing a post-treatment to the stacked dielectric layer; further wherein the steps of forming the stacked dielectric layer and performing the post-treatment are repeated at least once to form a high-k dielectric layer comprising at least two of said stacked and post-treated dielectric layers.