Patent ID: 6352884
Filing Date: 2002-03-05
Classification: C30B,H01L

Abstract:
A method for forming a crystal layer comprising the steps of:a. supplying first impurity atoms onto a surface of a crystal substrate to form a surfactant layer adsorbed on the surface, b. supplying nucleus atoms which bond with the first impurity atoms, the first impurity atoms remaining on the surface, c. repeating step b. until second impurity atoms are supplied in step d., d. supplying second impurity atoms which bond with the first impurity atoms and the nucleus atoms to locally form an anti-surfactant composite on the surface, e. supplying nucleus atoms which replace unbonded first impurity atoms on the surface of the crystal substrate and which do not replace first impurity atoms forming part of the anti-surfactant composite, and f. after the surface of the crystal substrate is entirely covered by the first impurity atoms, repeating step b. until a crystal layer including the nucleus atoms as a crystal nucleus material doped with the first and second impurity atoms is completely epitaxially grown.