Applied Materials, Inc.
SUBTRACTIVE METALS AND SUBTRACTIVE METAL SEMICONDUCTOR STRUCTURES

Abstract:

Embodiments of the present disclosure generally relate to subtractive metals, subtractive metal semiconductor structures, subtractive metal interconnects, and to processes for forming such semiconductor structures and interconnects. In an embodiment, a process for fabricating a semiconductor structure is provided. The process includes performing a degas operation on the semiconductor structure and depositing a liner layer on the semiconductor structure. The process further includes performing a sputter operation on the semiconductor structure, and depositing, by physical vapor deposition, a metal layer on the liner layer, wherein the liner layer comprises Ti, Ta, TaN, or combinations thereof, and a resistivity of the metal layer is about 30 .mu..OMEGA.cm or less.