Ryan, Mason & Lewis, LLP
Vertical field effect transistor with anchor
A method for fabricating a semiconductor structure is provided. The method includes forming one or more vertical fins on a semiconductor substrate with a hardmask on a top surface of the one or more vertical fins. The method includes forming an opening in the hardmask and the one or more vertical fins and in a portion of the semiconductor substrate to form a plurality of vertical fins. The method includes depositing an anchor layer in the opening. The method includes depositing a liner layer on sidewalls of each of the vertical fins and above a top surface of the semiconductor substrate. The method includes forming an angled recessed region in the exposed portion of each of the vertical fins below the liner layer and in the semiconductor substrate. The method includes forming a bottom source/drain region in the angled recessed region.
International Business Machines Corporation
H H H H H H H H
H01L H01L H01L H01L H01L H01L H01L H01L
inventional inventional inventional inventional inventional inventional inventional additional
Ruilong Kangguo Juntao
Xie Cheng Li