Patent ID: 6635938
Filing Date: 2003-10-21
Classification: H01L

Abstract:
A semiconductor device comprising:a silicon substrate having a main surface; an electrode at the main surface of said silicon substrate; first and second doped regions having a first conductivity type, spaced apart from each other, in said silicon substrate at the main surface and sandwiching said electrode; first and second epitaxial silicon layers, spaced from each other, and disposed on the main surface of said silicon substrate on said first and second doped regions, respectively; a silicon nitride film at the main surface of said silicon substrate, covering said electrode, and sandwiched between said first and second epitaxial silicon layers and said first and second doped regions; and a protective layer on said silicon nitride film, preventing deposition of silicon on said silicon nitride film during epitaxial growth of said first and second epitaxial silicon layers.