Patent ID: 9034102
Filing Date: 2015-05-19
Classification: C30B,H01L

Abstract:
1. A method of fabricating a hybrid orientation substrate, comprising: providing a silicon substrate with a first orientation that has a silicon layer with a second orientation directly thereon; forming a stress layer on the silicon layer; forming a trench between a first portion and a second portion of the silicon layer through the stress layer and into the silicon substrate; amorphizing the first portion of the silicon layer through the stress layer, wherein the stress layer is disposed on the first portion and the second portion of the silicon layer; performing a solid-phase epitaxy (SPE) process to recrystallize the amorphized first portion of the silicon layer to be a recrystallized layer with the first orientation; after performing the SPE process, performing an annealing process at a temperature lower than 1200° C. to convert a surface layer of the second portion of the silicon layer to a strained layer; filling the trench with an insulating material after the SPE process or the annealing process; and removing the stress layer.