Patent ID: 7927779

Claim:
A material for use in immersion lithography, comprising: a polymer that turns soluble to a base solution in response to reaction with acid; a photo-acid generator (PAG) that decomposes to form an acid in response to a radiation energy; and a quencher capable of neutralizing acid and having a reduced mobility wherein the quencher comprises a concentration greater than about 0.5% of the polymer by weight; wherein-the quencher is capable of being leached at an amount less than about 5×10 −13 mole/cm 2 in an immersion fluid used in the immersion lithography, wherein the immersion fluid includes one of water or a fluid having an index of refraction (n) greater than 1.44; wherein the quencher is substantially chemically bonded to the polymer and the PAG is not chemically bonded to the polymer; and wherein the quencher includes a structure selected from the group consisting of 1) two alkyl groups and a ring structure having an oxygen atom; 2) one alkyl group and two ring structures; and 3) three ring structures.