Patent ID: 7846833

Claim:
A semiconductor device manufacture method comprising (a) forming an interlayer insulating film having a concave portion, on a semiconductor substrate; (b) forming an adhesion layer on an inner surface of the concave portion and on an upper surface of the interlayer insulating film; (c) covering a surface of the adhesion layer with an auxiliary film made of Cu alloy containing a first metal element; (d) depositing a conductive member on the auxiliary film in such a way as to embed the conductive member containing a second metal element other than the first metal element, in the concave portion; and (e) performing heat treatment to make atoms of the first metal element in the auxiliary film segregate on the inner surface of the concave portion and atoms of the adhesion layer bond with the atoms of the first metal element at the inner surface of the concave portion, wherein the adhesion layer contains an element for enhancing tight adhesion of the auxiliary film more than if the auxiliary film is deposited directly on a surface of the interlayer insulating film.