Patent ID: 6538268
Filing Date: 2003-03-25
Classification: H01L

Abstract:
A semiconductor device comprising:an insulator layer formed on a wafer, a single crystalline semiconductor layer formed on said insulator layer, and a MOS field effect transistor formed on said single crystalline semiconductor layer, wherein said single crystalline semiconductor layer comprises a first conductivity type region and a second conductivity type region being opposite conductivity type to said first conductivity type region, wherein said first conductivity type region functions as a source region and a drain region of said MOS field effect transistor, wherein a lower surface of said first conductivity type region is formed apart from said insulator layer, wherein a contact hole is formed to penetrate through said first conductivity type region and filled with a metallic layer, wherein a recombination center region is formed of a metal-semiconductor junction between said metallic layer and said single crystalline semiconductor layer, and wherein an edge of said recombination center region is positioned apart from an edge of said first conductivity type region, wherein said recombination center region is a non-single crystalline region.