Patent ID: 6730559
Filing Date: 2004-05-04
Classification: H01L

Abstract:
A method of forming a finished capacitor construction comprising:forming a first capacitor electrode; depositing a first layer of a first capacitor dielectric material of a first chemical composition over the first capacitor electrode; forming a second layer of the same first capacitor dielectric material of the first chemical composition on the first layer, the second layer being formed to be discrete from the first layer and forming an interface line therebetween; and forming a second capacitor electrode over the second layer of the first capacitor dielectric material, the first and second layers of the first capacitor dielectric material being formed to remain discretely identifiable from one another in the finished capacitor construction by the interface line therebetween being perceptible in the finished capacitor construction, the forming of the second capacitor electrode imparting one of compressive or tensile stress on the second layer of the first capacitor dielectric material during second electrode formation, and comprising doping the second capacitor electrode during its formation with a conductivity enhancing impurity to achieve the compressive or tensile stress on the second layer of the first capacitor dielectric material during second electrode formation.