Patent ID: 8227309

Claim:
A method for forming a strained semiconductor film at desired locations over a substrate, the method comprising: masking the substrate to define and cover the desired locations, wherein exposed portions of the substrate remain after the masking; etching the exposed portions of the substrate to create an etched structure; depositing an oxide over the etched structure to create an oxide covered structure; planarizing the oxide covered structure to create a planarized structure; oxidizing the planarized structure to create an oxidized structure; etching the oxidized structure to provide an etched oxided structure with exposed portions of the substrate on 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 crystalline semiconductor to be compressively strained at the desired locations when bonded to the substrate.