Method of Increasing the Germanium Concentration in a Silicon-Germanium Layer and Semiconductor Device Comprising Same

摘要

Disclosed herein is a method of forming a semiconductor device. In one example, the method comprises forming layer of silicon germanium on a P-active region of a semiconducting substrate wherein the layer of silicon germanium has a first concentration of germanium, and performing an oxidation process on the layer of silicon germanium to increase a concentration of germanium in at least a portion of the layer of silicon germanium to a second concentration that is greater than the first concentration of germanium.