Patent ID: 7374993

Claim:
A method of forming a capacitor, comprising: forming a first capacitor electrode over a semiconductor substrate; forming a capacitor dielectric region onto the first capacitor electrode, the capacitor dielectric region comprising an exposed oxide-containing surface; treating the exposed oxide-containing surface of the capacitor dielectric region with at least one of a borane or a silane without depositing any layer onto the exposed oxide-containing surface during any of said treating; and after said treating with at least one of the borane or the silane without depositing any layer onto the exposed oxide-containing surface during any of said treating, then forming a second capacitor electrode over the treated oxide-containing surface, the second capacitor electrode comprising an inner metal surface contacting against the treated oxide-containing surface, the depositing the second capacitor electrode comprises using a halogen-containing gas, said treating of the exposed oxide-containing surface of the capacitor dielectric region being effective to reduce halogen incorporation into the capacitor dielectric region than would otherwise occur in the absence of said treating.