Patent ID: 8551686

Claim:
An antireflective coating composition for a photoresist layer comprising a polymer, a crosslinking agent and an acid generator, where the polymer comprises at least one unit of structure 1, where, X is a linking moiety selected from a nonaromatic (A) moiety, aromatic (P) moiety and mixture thereof, R′ is a group of structure 2, where R 1 and R 2 are H and L is a fluorinated alkyl, and further where structure 2 is derived by capping a carboxyl group with fluorinated glycidyl ether capping reactant, R″ is independently selected from hydrogen or a group of structure 2, where R 1 and R 2 are hydrogen and L is a fluorinated alkyl, and further where structure 2 is derived by capping a carboxyl group with fluorinated glycidyl ether capping reactant and, Y′ is independently a (C 1 -C 20 ) hydrocarbylene linking moiety.