Patent ID: 8237197
Filing Date: 2012-08-07
Classification: H01L

Abstract:
1. A semiconductor structure comprising a field effect transistor and another field effect transistor, said field effect transistor comprising a body region including: a buried SiGe body portion; an upper Si body portion contacting an upper surface of said buried SiGe body portion; a source-side Si body portion laterally contacting said buried SiGe body portion and a source region; a drain-side Si body portion laterally contacting said buried SiGe body portion and a drain region; and an underlying body portion located beneath said buried SiGe body portion, said source-side Si body portion, and said drain-side Si body portion, wherein said another field effect transistor comprises another body region, wherein an entirety of said another body region has dopants of the opposite polarity from dopants in said body region, and an entirety of said another body region is a doped silicon region that does not include germanium.