Patent ID: 9419138
Filing Date: 2016-08-16
CPC Classification: H01L

Claim Text:
1. A method of forming a semiconductor structure, said method comprising: providing a gate structure on a topmost surface of a germanium substrate and in an nFET device region of said germanium substrate; and forming a source-side carbon-doped germanium stressor region on one side of said gate structure, and a drain-side carbon-doped germanium stressor region on another side of said gate structure, wherein said forming said source-side carbon-doped germanium stressor region and said drain-side carbon-doped germanium stressor region comprises an epitaxial growth process utilizing monomethylgermane as a carbon source and wherein no silicon atoms are incorporated into said source-side carbon-doped germanium stressor region and said drain-side carbon-doped germanium stressor region.