Patent ID: 6664178
Filing Date: 2003-12-16
Classification: H01J,H01L,Y10S,Y10T

Abstract:
A method of forming an interconnect, comprising the steps of:forming a first recessed portion in an insulating film deposited on a semiconductor substrate; forming a first conductive film on each of a bottom face and side faces of said first recessed portion by chemical vapor deposition, said first conductive film comprising a conductive material and having a second recessed portion in a position corresponding to said first recessed portion of said insulating film; forming a second conductive film in an upper portion of each of a bottom face and side faces of said second recessed portion of said first conductive film by performing plasma nitriding on a surface of said first conductive film with said semiconductor substrate being held in a vacuum chamber maintained at a pressure of 10 Pa or higher, said second conductive film comprising a nitride of said conductive material and having a third recessed portion in a position corresponding to said second recessed portion of said first conductive film; forming a metal film by depositing a metal on said second conductive film and said insulating film such that said metal is filled in said third recessed portion of said second conductive film, said metal film comprising said metal; and forming an interconnect formed of said metal in said third recessed portion of said second conductive film.