Patent ID: 6673718
Filing Date: 2004-01-06
Classification: H01L

Abstract:
A method of forming an aluminum wiring within a contact hole or groove of a substrate, wherein the substrate includes an upper main surface and wherein the contact hole or groove is defined by an interior surface extending below the upper main surface of the substrate, said method comprising:forming an intermediate layer which includes nitrogen over the main surface of a substrate and over the interior surface of the contact hole or groove; treating a first surface portion of the intermediate layer which is located over the main surface of the substrate with a plasma to form a passivity layer at the first surface portion of the intermediate layer; and chemical vapor deposition (CVD) depositing an aluminum film only over a second surface portion of the intermediate layer which is located over the interior surface of the contact hole or groove, wherein said treating with plasma of the first surface portion of the intermediate layer prevents the CVD depositing of the aluminum film over the first surface portion of the intermediate layer; wherein said treating with a plasma and said CVD depositing are conducted without an intervening vacuum break.