Patent ID: 9018714
Filing Date: 2015-04-28
Classification: H01L

Abstract:
1. A structure comprising: at least one field effect transistor having a gate stack disposed between raised source drain structures, the gate stack and raised source drain structures being disposed on a surface of a semiconductor material, each raised source drain structure having a width and a height from the surface of the semiconductor material; contact metal comprising first contact metal terminating in a first trench formed through a top surface of a first raised source drain structure along substantially an entire width of the first raised source drain structure and extending into the first raised source drain structure by a distance substantially equal to the height of the first raised source drain structure, the first contact metal forming a bar-shaped contact to the first raised source drain structure; and the contact metal further comprising second contact metal terminating in a second trench formed through a top surface of a second raised source drain structure along substantially an entire width of the second raised source drain structure and extending into the second raised source drain structure by a distance substantially equal to the height of the second raised source drain structure, the second contact metal forming a bar-shaped contact to the second raised source drain structure; where each of the first trench and the second trench comprises silicide formed on sidewalls and a bottom surface of at least a portion of the trench, where the contact metal exhibits one of tensile stress or compressive stress, and further comprising a layer of field dielectric material that at least partially overlies the gate stack and raised source drain structures, where the layer of field dielectric material has a thickness in a range of about 50 nm to about 150 nm, where the layer of field dielectric is configured to exhibit tensile stress when the contact metal exhibits tensile stress, and where the layer of field dielectric material is configured to exhibit compressive stress when the contact metal exhibits compressive stress.