Patent ID: 7618880

Claim:
A method of forming a second wide bandgap layer in a first wide bandgap oxide material, comprising the steps of: providing the first wide bandgap oxide material; directing a first thermal energy beam onto the first wide bandgap oxide material in the presence of a carbon source to react the oxide within the first wide bandgap oxide material with the carbon source to form a carbon oxide for removing oxygen from the first wide bandgap oxide material; providing a doping gas having at least one element common to the second wide bandgap material; applying the doping gas to the first wide bandgap material; and directing a second thermal energy beam onto the first wide bandgap material in the presence of the doping gas for enabling the element of the doping gas to enter into the first wide bandgap material for converting a layer of the first wide bandgap oxide material into a layer of the second wide bandgap material.