Patent ID: 8866203
Filing Date: 2014-10-21
Classification: C23C,C30B,H01L

Abstract:
1. An epitaxial product having a compound epitaxial layer formed by chemical bonding, the epitaxial product comprising: a substrate; a contact layer formed on a surface of the substrate; an unsaturated ionic bond layer formed on a surface of the contact layer away from the substrate, wherein atoms on the surface of the contact layer are chemically reacted with non-metal atoms such that the non-metal atoms are turned out to be non-metal ions, the non-metal ions are bound to the atoms on the surface of the contact layer by chemical bonding for forming the unsaturated ionic bond layer and, after the non-metal ions are subjected to energy excitation, unpaired electrons of the non-metal ions that have not been bound to the atoms on the surface of the contact layer become dangling bonds; and a compound epitaxial layer formed on a surface of the unsaturated ionic bond layer away from the contact layer by chemical vapor deposition through introducing organic metal compounds and reactant gas to the unsaturated ionic bond layer, wherein metal ions of the organic metal compounds are guided by electric dipole attraction of the dangling bonds and then bound to the dangling bonds, and anions of the reactant gas are bound to the metal ions by ionic bonding, thereby the compound epitaxial layer is formed on the surface of the unsaturated ionic bond layer by chemical bonding.