Patent ID: 9391181
Filing Date: 2016-07-12
CPC Classification: H01L

Claim Text:
1. An apparatus comprising: a substrate included in a plane having a substrate major axis corresponding to substrate width and a substrate minor axis corresponding to substrate height; and a first epitaxial (EPI) cladding layer adjacent second and third EPI cladding layers, the first, second, and third EPI claddings layers included in a plane, the plane including a planar major axis generally parallel to the substrate major axis and intersecting the first, second, and third EPI claddings layers; wherein the substrate includes a substrate lattice constant and one of the first, second, and third cladding layers includes a lattice constant unequal to the substrate lattice constant; wherein the third EPI cladding layer includes a third EPI cladding material equal to a second EPI cladding material; wherein the first EPI cladding layer is doped with a polarity and the second and third EPI cladding layers are doped with another polarity opposite the polarity of the first EPI cladding layer; wherein the second and third EPI cladding layers are equidistant from one of (a) a fin that extends towards the substrate, and (b) a trench that extends towards the substrate.