Patent ID: 7227264
Filing Date: 2007-06-05
Classification: H01L

Abstract:
1. A semiconductor device characterized in comprising: a first semiconductor layer formed on a dielectric layer; a second semiconductor layer stacked on the first semiconductor layer and having a band gap or an electron affinity different from the first semiconductor layer; a metal wiring film that contacts the first semiconductor layer and second semiconductor layer, wherein the first semiconductor layer is Si, and the second semiconductor layer is SiGe; a gate electrode formed on the first semiconductor layer; source/drain layers disposed on both sides of the gate electrode, and formed in the first semiconductor layer with bottom sections thereof reaching the dielectric layer; the second semiconductor layer stacked on the source/drain layers; an opening section that penetrates the source layer or the drain layer and the second semiconductor layer and reaches the dielectric layer; and wherein the metal wiring film, that is embedded in the opening section, contacts the source layer or the drain layer and the second semiconductor layer at a side surface of the opening section.