Patent ID: 8264012
Filing Date: 2012-09-11
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a semiconductor substrate; a gate electrode formed over the semiconductor substrate; a source extension region and a drain extension region having a first depth formed in the semiconductor substrate; a source region and a drain region having a second depth greater than the first depth formed in the semiconductor substrate; a first semiconductor layer including SiGe formed in the source region and a second semiconductor layer including SiGe formed in the drain region; a first impurity region including at least one of oxygen and carbon located between the first semiconductor layer and the source extension region, and a second impurity region including at least one of oxygen and carbon located between the second semiconductor layer and the drain extension region; wherein concentration of the oxygen or the carbon is 1.0×10 wherein the impurity region includes self-interstitial atoms and/or vacancies; and wherein the impurity region is a conductive region.