Intel Corporation
Metal chemical vapor deposition approaches for fabricating wrap-around contacts and resulting structures

Abstract:

Metal chemical vapor deposition approaches for fabricating wrap-around contacts, and semiconductor structures having wrap-around metal contacts, are described. In an example, an integrated circuit structure includes a semiconductor feature above a substrate. A dielectric layer is over the semiconductor feature, the dielectric layer having a trench exposing a portion of the semiconductor feature, the portion having a non-flat topography. A metallic contact material is directly on the portion of the semiconductor feature. The metallic contact material is conformal with the non-flat topography of the portion of the semiconductor feature. The metallic contact material has a total atomic composition including 95% or greater of a single metal species.