Patent ID: 7521269
Filing Date: 2009-04-21
Classification: H01L

Abstract:
1. A method of growing a single-crystal nitride-based semiconductor substrate, the method comprising: depositing a seed material layer on an upper surface of a first substrate and growing a multifunctional substrate from an upper surface of the seed material layer; forming a multi-layer on an upper surface of the multifunctional substrate by (metal-organic chemical vapor deposition) MOCVD, in which the multi-layer consists of a nitride-based buffer layer and a single-crystal nitride-based layer stacked on the nitride-based buffer layer; removing the seed material layer, and the first substrate by performing wet etching or dry etching; and performing a heat-treatment process in order to enhance crystallinity of the multifunctional substrate and the single-crystal nitride-based layer obtained through the above steps.