A sulfonium salt having a 4-fluorophenyl group is introduced as recurring units into a polymer comprising hydroxyphenyl(meth)acrylate units and acid labile group-containing (meth)acrylate units to form a polymer which is useful as a base resin in a resist composition. The resist composition has a high sensitivity, high resolution and minimized LER.
一种含有4-
氟苯基的磺鎵盐被引入到聚合物中,该聚合物包含羟基苯基(甲基)
丙烯酸酯单元和含酸性易裂解基团的(甲基)
丙烯酸酯单元,形成一种聚合物,可用作抗蚀剂组成中的基础
树脂。抗蚀剂组成具有高灵敏度、高分辨率和最小化LER。