Patent ID: 8435850
Filing Date: 2013-05-07
Classification: H01L

Abstract:
1. A method for forming a strained semiconductor film at desired locations over a substrate, the method comprising: forming an oxidized structure on the substrate, the oxidized structure comprising a first side and a second side on opposite sides of the desired locations, and wherein a thickness of the oxidized structure at the desired locations is greater than a thickness of the oxidized structure at the first and second sides; etching the oxidized structure to provide an etched oxidized structure with exposed portions of the substrate on the opposite sides of each of the desired locations and with oxide remaining over the desired locations; depositing amorphous semiconductor over the etched oxidized structure; crystallizing the amorphous semiconductor to provide crystallized semiconductor over the etched oxidized structure, wherein the crystallized semiconductor is bonded to the exposed portions of the substrate on opposite sides of each of the desired locations; and removing the oxide remaining over the desired locations to allow the crystallized semiconductor to bond to the substrate and to be compressively strained at the desired locations when bonded to the substrate.