Patent ID: 9059323
Filing Date: 2015-06-16
Classification: H01L

Abstract:
1. A method comprising: providing a precursor structure including a substrate and a set of fins overlying the substrate; forming a dummy epitaxy layer between the fins in the set of fins; forming a dielectric over the dummy epitaxy layer and the set of fins; forming a first mask over a first portion of the dielectric, leaving a second portion of the dielectric exposed; removing the second portion of the dielectric and the dummy epitaxy layer under the second portion of the dielectric to expose fins under the second portion of the dielectric; forming a first an in-situ doped epitaxy between the exposed fins; forming a shielding dielectric over the in-situ doped epitaxy and the exposed fins; forming a second mask over the shielding dielectric; removing the first portion of the dielectric and the dummy epitaxy layer under the first portion of the dielectric to expose fins under the first portion of the dielectric; forming a second in-situ doped epitaxy between the exposed fins under the first portion of the dielectric; and removing the shielding dielectric over the in-situ doped epitaxy and the exposed fins.