Patent ID: 8691650

Claim:
A method of making a metal oxide semiconductor field effect transistor (MOSFET), comprising: providing a semiconductor on insulator layer (SOI layer); forming a dummy gate on the SOI layer; forming a plurality of first junctions by doping the SOI layer to form a doped SOI-source-drain; forming an insulating layer over the SOI layer; removing the dummy gate forming an exposed portion of the SOI layer; etching the exposed portion of the SOI layer wherein the etching: (i) forms a recess in the SOI layer; (ii) leaves a remaining portion of the SOI layer below the recess; and (iii) removes at least a portion of the first junctions; filling the recess at least partially with a film to form a channel film and a plurality of second junctions between the channel film and the doped SOI-source-drain; depositing a high dielectric constant material over the channel film; and forming a metal gate stack in contact with the high dielectric constant material.