Patent ID: 8703623
Filing Date: 2014-04-22
Classification: H01L

Abstract:
1. A method of fabricating a nitride-base device comprising: providing one or more substrate structures; providing one or more nitride-based material structures fabricated independently from said one or more substrate structures, said one or more nitride-based material structures are grown on a silicon substrate and said one or more intermediary layers that comprises a coated material with a thickness of at least directly positioning one or more intermediary layers having insulating materials between said one or more substrate structures and said one or more nitride-based material structures, said one or more intermediary layers supporting the lattice mismatch and thermal expansion coefficients between said one or more nitride-based material structures and said one or more substrate structures; attaching said carrier wafer after coating to said one or more nitride-based structures by thermal compression and flipping down a side of the silicon substrate with the one or more nitride-based material structures to make a direct contact with the one or more intermediary layers; and completely removing the silicon substrate by dry etching to obtain a smooth N-face, wherein the one or more nitride-based material structures function as an etch-stop layer.