Patent ID: 9437710
Filing Date: 2016-09-06
CPC Classification: H01L,Y10S

Claim Text:
1. An apparatus, comprising: a substrate comprising silicon; a gate electrode on the substrate, the gate electrode comprising silicon; a gate dielectric between the gate electrode and the substrate, the gate dielectric comprising oxygen and at least one other element; a first spacer comprising a nitride, the first spacer being located to a first side of the gate electrode; a second spacer comprising a nitride, the second spacer being located to a second side of the gate electrode, the second side being opposite the first side; a source region comprising silicon and germanium to the first side of the gate electrode, the source region having an upper boundary above a top of the substrate and having a lower boundary below the top of the substrate, the source region having a first width at the top of the substrate, and a second width wider than the first width at a position beneath the top of the substrate; a drain region comprising silicon and germanium to the second side of the gate electrode, the drain region having an upper boundary above a top of the substrate and having a lower boundary below the top of the substrate, the drain region having a first width at the top of the substrate, and a second width wider than the first width at a position beneath the top of the substrate; a source contact on the source region, the source contact comprising silicon, germanium, and nickel; and a drain contact on the drain region, the drain contact comprising silicon, germanium, and nickel.