Patent ID: 9105471
Filing Date: 2015-08-11
Classification: H01L

Abstract:
1. Rare earth oxy-nitride buffered III-N on silicon comprising: a crystalline silicon substrate with a 111 crystal orientation and having a crystal lattice spacing of a a rare earth oxide structure deposited on the silicon substrate and including a plurality of layers of single crystal rare earth oxide in contact with each other, and the rare earth oxide structure having a crystal lattice spacing adjacent the crystalline silicon substrate approximately equal to 2a a layer of single crystal rare earth oxy-nitride deposited on the rare earth oxide structure, the rare earth oxide structure having a crystal lattice spacing adjacent the layer of single crystal rare earth oxy-nitride that is one of greater than 2a a III oxy-nitride structure deposited on the layer of single crystal rare earth oxy-nitride and including a plurality of layers of single crystal III oxy-nitride; and a layer of single crystal III nitride deposited on the III oxy-nitride structure, the III oxy-nitride structure being chemically engineered to transfer the predetermined amount of stress in the layer of single crystal rare earth oxy-nitride to the layer of single crystal III nitride, whereby bowing and cracking in the layer of single crystal III nitride are prevented.