摘要:
A semiconductor structure and method for forming the same provide a high mobility stressor material suitable for use as source/drain regions or other active devices. The structure is formed in a substrate opening and is doped with an impurity such as boron in upper portions but is void of the impurity in regions that contact the surfaces of the opening. The structure is therefore resistant to out-diffusion of the dopant impurity during high temperature operations and may be formed through selective deposition using reduced pressure chemical vapor deposition or reduced pressure epitaxial deposition.
摘要:
A semiconductor structure and method for forming the same provide a high mobility stressor material suitable for use as source/drain regions or other active devices. The structure is formed in a substrate opening and is doped with an impurity such as boron in upper portions but is void of the impurity in regions that contact the surfaces of the opening. The structure is therefore resistant to out-diffusion of the dopant impurity during high temperature operations and may be formed through selective deposition using reduced pressure chemical vapor deposition or reduced pressure epitaxial deposition.