Patent ID: 8323871

Claim:
An antireflective hardmask composition comprising a polymer having a repeating structural unit selected from the group consisting of wherein x is at least 1; y is at least 1; R is an organic functional unit selected from one or more chromophore moieties, transparent moieties, and crosslinking components, and wherein said inorganic unit is selected from the group consisting of wherein x and y have the meanings given above; M d is selected from Ti, Zr, Hf, Sc, Y, La, V, Nb, Ta and lanthanide rare earth metals; R 1 is the same or different and is selected from C 1 -C 6 alkyl, C 1 -C 6 alkoxy, phenyl and phenoxy; and R 2 is the same or different and is selected from C 1 -C 6 alkyl and C 1 -C 6 alkoxy.