Patent ID: 8017461
Filing Date: 2011-09-13
Classification: H01L

Abstract:
1. A method of forming a semiconductor-on-insulator (SOI) field effect transistor with body contact, comprising: forming a semiconductor source/drain layer on a bulk semiconductor region; forming a first insulating layer between the semiconductor source/drain layer and the bulk semiconductor region and a second insulating layer at sidewalls of an opening in the semiconductor source/drain layer; selectively etching a portion of the first insulating layer in the opening to expose a portion of the bulk semiconductor region; epitaxially growing a first semiconductor active region from the exposed portion of the bulk semiconductor region; then selectively etching back the second insulating layer to expose sidewall portions of the semiconductor source/drain layer; epitaxially growing a second semiconductor active region that extends on the first semiconductor active region and on the exposed sidewall portions of the semiconductor source/drain layer; and forming an insulated gate electrode on the second semiconductor active region.