The present invention provides a method of fabricating an interconnect structure in which a patternable low-k material replaces the need for utilizing a separate
photoresist and a
dielectric material. Specifically, this invention relates to a simplified method of fabricating single-damascene and dual-damascene low-k interconnect structures with at least one patternable low-k
dielectric and at least one inorganic antireflective
coating. In general terms, a method is provided that includes providing at least one patternable low-k material on a surface of an inorganic antireflective
coating that is located atop a substrate, said inorganic antireflective
coating is vapor deposited and comprises atoms of M, C and H wherein M is at least one of Si, Ge, B, Sn, Fe, Ta, Ti, Ni, Hf and La; forming at least one interconnect pattern within the at least one patternable low-k material; and curing the at least one patternable low-k material. The inventive method can be used to form dual-damascene interconnect structures as well as single-damascene interconnect structures.