A system and method are provided to facilitate dual damascene interconnect
integration in a single imprint step. The method provides for creation of
a translucent imprint mold with three-dimensional features comprising the
dual damascene pattern to be imprinted. The imprint mold is brought into
contact with a photopolymerizable organosilicon imaging layer deposited
upon a transfer layer which is spin coated or otherwise deposited upon a
dielectric layer of a substrate. When the photopolymerizable layer is
exposed to a source of illumination, it cures with a structure matching
the dual damascene pattern of the imprint mold. A halogen breakthrough
etch followed by oxygen transfer etch transfer the vias from the imaging
layer into the transfer layer. A second halogen breakthrough etch
followed by a second oxygen transfer etch transfer the trenches from the
imaging layer into the transfer layer. A dielectric etch transfers the
pattern from the transfer layer into the dielectric layer. A metal fill
process then fills the dual damascene openings of the dielectric layer
with metal.