Patent ID: 9209200
Filing Date: 2015-12-08
Classification: H01L

Abstract:
1. A method for forming a semiconductor device, comprising: forming gate stacks on a crystalline semiconductor layer; depositing a spacer layer over a top and sidewalls of the gate stacks; recessing the semiconductor layer between the gates stacks; depositing a non-conformal layer over the gates stacks and within the recesses such that the non-conformal layer forms a pinch point over the recesses; etching the non-conformal layer at a bottom of the recesses through the pinch point to expose the semiconductor layer; implanting dopant species at the bottom of the recesses through the pinch point in the semiconductor layer; stripping the non-conformal layer; growing source and drain material in the recesses; and activating the dopant species to form PN junctions to act as a junction butt between portions of the semiconductor layer.