Patent ID: 7960292

Claim:
A method of fabricating a ZnO film having a matching crystal orientation to a silicon substrate, comprising steps of: (a) obtaining a silicon substrate having a (111) crystal orientation, filling in a carrier gas, and running a thermal etching process on said silicon substrate by using a HCl gas; (b) filling in a carrier gas, transferring a III-group feedstock gas having Al and a V-group feedstock gas having nitrogen N 2 onto said silicon substrate obtained after said thermal etching process, and obtaining an AlN thin layer after a high temperature epitaxy through metal-organic chemical vapor deposition (MOCVD) to obtain a multi-layered thin film of AlN/Si(111); (c) filling in a carrier gas, transferring a III-group feedstock gas having Al and Ga and a V-group feed stock gas having N 2 onto said AlN/Si(111) thin film, and obtaining an AlGaN thin layer after a high temperature epitaxy through MOCVD to obtain a multi-layered thin film of AlGaN/AlN/Si(111); (d) filling in a carrier gas, transferring a III-group feedstock gas having Ga and a V-group feedstock gas having N 2 onto said AlGaN/AlN/Si(111) thin film, and obtaining a GaN thin layer after a high temperature epitaxy through MOCVD to obtain a multi-layered thin film of GaN/AlGaN/AlN/Si(111); (e) filling in a carrier gas, transferring a III-group feedstock gas having In and Ga and a V-group feedstock gas having N 2 onto said GaN/AlGaN/AlN/Si(111) thin film, and obtaining an In x Ga 1-x N thin layer after a high temperature epitaxy through MOCVD to obtain a multi-layered thin film of In x Ga 1-x N/GaN/AlGaN/AlN/Si(111); (f) filling in a carrier gas, transferring chemical-reaction feedstock gases onto said In x Ga 1-x N/GaN/AlGaN/AlN/Si(111) thin film, and obtaining a LT-ZnO thin layer after an epitaxy through MOCVD at a temperature between 150° C. and 200° C. to obtain a multi-layered thin film of LT-ZnO/In x Ga 1-x N/GaN/AlGaN/AlN/Si(111); (g) putting said LT-ZnO/In x Ga 1-x N/GaN/AlGaN/AlN/Si(111) thin film into a furnace to run a thermal treatment at a high temperature with a carrier gas; and (h) filling in a carrier gas, transferring chemical-reaction feedstock gases onto said LT-ZnO/In x Ga 1-x N/GaN/AlGaN/AlN/Si(111) thin film obtained after said thermal treatment, and obtaining a HT-ZnO thin layer after an epitaxy through MOCVD at a temperature between 600° C. and 650° C. to obtain a multi-layered thin film of HT-ZnO/LT-ZnO/In x Ga 1-x N/GaN/AlGaN/AlN/Si(111), Wherein, through said epitaxies at high and low temperatures, layers of HT-ZnO/LT-ZnO obtain a matching single-crystal lattice to said silicon substrate.