Patent ID: 6855963

Claim:
A high-electron-mobility layer semiconductor structure comprising: an SGOI substrate comprising a SiGe layer on insulator having Ge content ranging between 30-40% and ranging in thickness between 20 nm-30 nm, and having a p-type doping concentration ranging between 1e14 cm −3 -5e17 cm −3 ; an epitaxial Si 0.95 Ge 0.05 seed layer grown on top of said SiGe layer and ranging in thickness between 0 nm-5 nm; a regrown Si 1-x Ge x buffer layer grown on top of said seed layer and ranging in thickness between 20 nm-30 nm and having Ge content x ranging between 10%-40%; an epitaxial tensile strained Si layer grown on top of said buffer layer and ranging in thickness between 5 nm-7 nm; an epitaxial Si 1-y Ge y spacer layer grown on top of said strained Si layer and ranging in thickness between 3 nm-5 nm and having Ge content y ranging between 30-40%; an epitaxial Si 1-z Ge z supply layer grown on top of said spacer layer ranging in thickness between 2 nm-8 nm and having a n-type doping concentration ranging between 2e18 cm −3 -2e19 cm −3 and having Ge content ranging between 35-50%; and, an epitaxial tensile strained Si cap layer grown on top of said supply layer ranging in thickness between 0 nm-3 nm and having a n-type doping concentration ranging between 5e17 cm −3 -5e19 cm −3 .