Patent ID: 8076231
Filing Date: 2011-12-13
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate; a first semiconductor layer having a rectangular solid-shape formed at an upper part of the semiconductor substrate to have a first top surface with a ( a pMISFET, wherein the pMISFET has a first channel region formed at least at the first side face of the first semiconductor layer, a first gate dielectric film formed at least on the first side face of the first semiconductor layer, a first gate electrode covering the first channel region with the first gate dielectric film being sandwiched therebetween, and first source/drain regions formed within the rectangular solid-shaped first semiconductor layer in such a way as to interpose the first channel region therebetween, the first gate electrode includes a metal film and a first semiconductor film having an impurity concentration which becomes higher in a direction from the semiconductor substrate side of the first semiconductor film to an upside thereof, the first channel region is applied a compressive strain in a direction perpendicular to the principal plane of the semiconductor substrate, and the metal film is interposed between the first gate dielectric film and the first semiconductor film.