PATTERNABLE LOW-K DIELECTRIC INTERCONNECT STRUCTURE WITH A GRADED CAP LAYER AND METHOD OF FABRICATION

摘要

An interconnect structure is provided that includes at least one patterned and cured low-k material (18', 22') located on a surface of a patterned graded cap layer (14). The at least one cured and patterned low-k material and the patterned graded cap layer each have conductively filled regions (26) embedded therein. The patterned and cured low-k material is a cured product of a functionalized polymer, copolymer, or a blend including at -least two of any combination of polymers and/or copolymers having one or more acid-sensitive imageable groups, and the graded cap layer includes a lower region that functions as a barrier region and an upper region that has antireflective properties of a permanent antireflective coating.