Patent ID: 7339191
Filing Date: 2008-03-04
Classification: C23C,H01L,Y10T

Abstract:
1. A capacitor, comprising: a first capacitor plate; a second capacitor plate; and a dielectric layer interposed between the first capacitor plate and the second capacitor plate, wherein the dielectric layer includes an aluminum oxide layer and a second dielectric material embedded in a surface of the aluminum oxide layer, wherein a dopant material is embedded in the surface of the aluminum oxide layer after a formation of the aluminum oxide layer, thereby not dispersing the dopant material throughout the aluminum oxide layer, and the dopant material is subsequently treated to form the second dielectric material, and wherein the dopant material is selected from the group consisting of silicon, zirconium, hafnium and titanium; wherein the aluminum oxide layer further includes voids below the surface and wherein the voids are free of the dopant material.