Patent ID: 8102051
Filing Date: 2012-01-24
Classification: C23C,H01L

Abstract:
1. A semiconductor device comprising: a first insulating layer made of a material containing Si and O; a lower groove shaped by digging down the first insulating layer; a lower electrode, embedded in the lower groove, made of a metallic material mainly composed of Cu; an insulating film, stacked on the lower electrode, in which at least a lowermost layer portion on the side of the lower electrode is made of S an upper electrode, provided to be opposed to the lower electrode across the insulating film, made of a conductive material; a first barrier film, formed between the lower electrode and each of the first insulating layer and the insulating film, made of Mn a W plug, provided to penetrate the insulating film and electrically connected to the lower electrode, made of W; and a multilayer barrier film interposed between the W plug and the lower electrode and the insulating film, wherein the multilayer barrier film includes a Ta film in contact with the lower electrode and the insulating film and a TiN film in contact with the W plug.