THREE DIMENSIONAL SEMICONDUCTOR DEVICE CONTAINING COMPOSITE CONTACT VIA STRUCTURES AND METHODS OF MAKING THE SAME
Abstract:
A semiconductor structure includes at least one first semiconductor device located on a substrate, lower-level dielectric material layers embedding lower-level metal interconnect structures, at least one second semiconductor device and a dielectric material portion that overlie the lower-level dielectric material layers, at least one upper-level dielectric material layer, and an interconnection via structure vertically extending from the at least one upper-level dielectric material layer to a conductive structure that can be a node of the at least one first semiconductor device or one of lower-level metal interconnect structures. The interconnection via structure includes a transition metal layer and a fluorine-doped filler material portion in contact with the transition metal layer, composed primarily of a filler material selected from a silicide of the transition metal element or aluminum oxide, and including fluorine atoms.
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