Patent ID: 6692568
Filing Date: 2004-02-17
Classification: C23C,C30B,H01J,H01L

Abstract:
A method for producing single-crystal MIIIN columns comprising the steps of:(a) providing a template material having an epitaxial-initiating growth surface; (b) sputtering a Group III metal target in a reaction chamber to produce a Group III metal source vapor; (c) introducing a nitrogen-containing gas into the reaction chamber; (d) adjusting the III/V ratio of Group III metal source vapor to nitrogen to create a Group III metal-rich environment within the reaction chamber conducive to preferential column growth; (e) combining the Group III metal source vapor with the nitrogen-containing gas to produce a reactant vapor species comprising Group III metal and nitrogen; and (f) depositing the reactant vapor species on the growth surface to produce single-crystal MIIIN columns thereon.