Patent ID: 6495453
Filing Date: 2002-12-17
Classification: H01L

Abstract:
A method for depositing a metal-containing film from a metal-plating bath on a substrate having at least one opening in an insulating layer, said film comprising two or more deposited metal-containing layers, said method comprising the steps of:a) depositing a metal-containing layer from said metal plating bath on said substrate, thereby producing a first deposited metal-containing layer in at least one opening, said deposited metal-containing layer having impurities incorporated therein or adhered to the surface thereof; thereafter b) performing at least one of a heating step and a vacuum step on said deposited metal-containing layer, whereby the impurities incorporated in said deposited metal-containing layer or adhered to the surface of said deposited metal-containing layer are substantially eliminated; and thereafter c) depositing an additional metal-containing layer from said metal plating bath on said deposited metal-containing layer, whereby said opening in said insulating layer is substantially filled with said metal-containing film.