METHOD OF FABRICATING AN EPITAXIAL LAYER
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A method of fabricating an epitaxial layer includes providing a substrate. The substrate is etched to form at least a recess within the substrate. A surface treatment is performed on the recess to form a Si—OH containing surface. An in-situ epitaxial process is performed to form an epitaxial layer within the recess, wherein the epitaxial process is performed in a hydrogen-free atmosphere and at a temperature lower than 800° C.