Semiconductor device and method for fabricating same

Abstract

A semiconductor device and method for fabricating the same which improves reliability of the semiconductor device is disclosed. The semiconductor device includes: a first insulating film and a gate electrode sequentially formed on a part of a semiconductor substrate; a first insulating spacer formed at both sides above the gate electrode; a second insulating spacer formed at both sides below the gate electrode; and a cobalt silicide film formed on a surface of the gate electrode at a predetermined depth. The method for fabricating the semiconductor device includes the steps of: forming a first insulating film having a hole to expose a part of a semiconductor substrate; forming a second insulating film on the exposed semiconductor substrate inside the hole; forming a gate electrode on the second insulating film to protrude more than the first insulating film; forming a first insulating spacer at both sides of an upper part of the protruded gate electrode; forming a cobalt silicide on a surface of the upper part of the gate electrode; and selectively removing the first insulating film to remain on both sides of a lower part of the gate electrode, so that a second insulating spacer is formed.

Dependencies are inferred from the claim text.