Patent ID: 7030002

Claim:
A method of forming a SiGe layer having a relatively high Ge content, comprising: seriatim preparing a silicon substrate; depositing a layer of SiGe to a thickness of between about 100 nm to 500 nm, wherein the Ge content of the SiGe layer is equal to or greater than 10%; implanting H 2 + ions through the SiGe layer into the substrate at a dose of between about 2×10 14 cm −2 to 2×10 16 cm −2 , at an energy of between about 20 keV to 100+ keV; low temperature thermal annealing at a temperature of between about 200° C. to 400° C. for between about ten minutes and ten hours; high temperature thermal annealing the substrate and SiGe layer, to relax the SiGe layer, in an inert atmosphere at a temperature of between about 650° C. to 1000° C. for between about 30 seconds and 30 minutes to form a relaxed SiGe buffer layer; and depositing a layer of tensile-strained silicon on the relaxed SiGe buffer layer to a thickness of between about 5 nm to 30 nm.