In one aspect, the invention encompasses a method of fabricating an interconnect
for a semiconductor component. A semiconductor substrate is provided, and an opening
is formed which extends entirely through the substrate. A first material is deposited
along sidewalls of the opening at a temperature of less than or equal to about
200 C. The deposition can comprise one or both of atomic layer deposition
and chemical vapor deposition, and the first material can comprise a metal nitride.
A solder-wetting material is formed over a surface of the first material. The solder-wetting
material can comprise, for example, nickel. Subsequently, solder is provided within
the opening and over the solder-wetting material.