Patent ID: 8034696

Claim:
A method of manufacturing a semiconductor device, comprising the steps of: forming a first insulator layer on a surface of a semiconductor substrate; patterning a first mask member deposited on the first insulator layer into a desired shape; forming a first window, through which the surface of the semiconductor substrate is exposed, by selectively removing the first insulator layer, using the patterned first mask member; introducing the semiconductor substrate into a chamber for performing an epitaxial growth and epitaxially growing, as a first substep of the epitaxial growth, the surface of the semiconductor substrate exposed through the first window as a seed crystal to thereby fill the first window with a first epitaxial layer including a semiconductor layer; epitaxially growing, as a second substep of the epitaxial growth, a second epitaxial layer such that the first epitaxial layer and the first insulator layer are covered, in a condition in which the semiconductor substrate is retained in the chamber, subsequent to the first substep of epitaxial growth; and etching to flatten the second epitaxial layer in the condition in which the semiconductor substrate is retained in the chamber, subsequent to the second substep of the epitaxial growth, wherein the second substep of the epitaxial growth and the etching are performed without allowing a temperature in the chamber during the second substep of the epitaxial growth and the etching to be decreased from a temperature of the chamber during the first substep of epitaxial growth, and wherein an HCl gas is not introduced into the chamber during the first substep of the epitaxial growth, while the HCl gas is introduced into the chamber during the second substep of the epitaxial growth.