Patent ID: 7923322
Filing Date: 2011-04-12
Classification: C23C,H01L

Abstract:
1. A method of forming a capacitor comprising: forming a first capacitor electrode and substantially amorphous material over a substrate, the substantially amorphous material being separate from and not constituting a portion of the first capacitor electrode; forming a substantially crystalline capacitor dielectric layer over the first capacitor electrode and the substantially amorphous material; outwardly exposing an elevationally outer surface of the substantially amorphous material; providing the substrate with substantially crystalline capacitor dielectric layer and the substantially amorphous material having the exposed elevationally outer surface within a chemical vapor deposition reactor; and while the elevationally outer surface of the substantially amorphous material is outwardly exposed, feeding a gaseous precursor comprising silicon to the chemical vapor deposition reactor under conditions which substantially selectively deposit polysilicon on the substantially crystalline capacitor dielectric layer relative to the outwardly exposed elevationally outer surface of the substantially amorphous material, and forming the polysilicon into a second capacitor electrode.