Patent ID: 8906590

Claim:
A high carbon content antireflective coating composition comprising a crosslinker and a crosslinkable polymer, where the crosslinkable polymer comprises a unit represented by structure (1) -A-B-C- (1) where A has structure (4) further where Ar is anthracene, B has a structure (2), and C is a hydroxybiphenyl of structure (3) where R 1 is C 1 -C 4 alkyl and R 2 is C 1 -C 4 alkyl and further wherein, Ar may be unsubstituted or substituted with one or more organo constituents, chosen from the group consisting of alkyl, aryl, substituted aryl, alkylaryl, and haloalkyls, hydroxyl, amino, and aminoalkyl; and further were the composition after coating, and baking at 400° C. for 120 seconds, has a carbon content that is greater than 80 weight%.