Patent ID: 6313016
Filing Date: 2001-11-06
Classification: C30B,H01L

Abstract:
A method for producing relaxed epitaxy layers on a semiconductor substrate by an epitaxy process with a hydrogen source, said method comprising the following steps occurring during an in situ process sequence:(a) forming a hydrogen-containing intermediate layer at a substrate surface by one of deposition of the intermediate layer on the substrate surface and diffusing hydrogen into the substrate near the substrate surface;(b) growing a strained epitaxy layer on the intermediate layer;(c) subjecting the strained epitaxy layer to a temperature treatment;(d) repeating steps (a), (b) and (c) to successively precipitate several relaxed epitaxy layers, using the last formed relaxed epitaxial layer as the substrate, during the in situ process sequence; and,(e) epitaxially growing a component structure layer on the outermost epitaxial layer resulting from step (d).