Patent ID: 8802357

Claim:
A method of forming an image on a photoresist comprising: forming a photoresist over a substrate; applying a topcoat composition onto the photoresist, wherein the topcoat composition comprising at least one fluorine-containing polymer represented by the formula (1) or (2) and a casting solvent comprising an alcohol: wherein R is a hydrogen atom, wherein R 1 is a branched alkyl group, a branched fluoroalkyl group, or a hydrogen atom, wherein R 2 is a fluoroalcohol group, a linear alkyl group, a branched alkyl group, a linear fluoroalkyl group, or a branched fluoroalkyl group, and wherein n and m represent respective molar fractions such that n+m=1; removing said casting solvent of said topcoat composition resulting in the formation of a topcoat material over said photoresist; exposing said photoresist to radiation, thereby forming exposed and unexposed regions in said photoresist, said radiation changing the chemical composition of said photoresist in said exposed regions; and removing i) said topcoat material and ii) either said exposed regions of said photoresist or said unexposed regions of said photoresist.