A polymerizable anion-containing sulfonium salt having formula (1) is provided wherein R1 is H, F, methyl or trifluoromethyl, R2, R3 and R4 are C1-C10 alkyl, alkenyl or oxoalkyl or C6-C18 aryl, aralkyl or aryloxoalkyl, or two of R2, R3 and R4 may bond together to form a ring with S, A is a C2-C20 hydrocarbon group having cyclic structure, and n is 0 or 1. The sulfonium salt generates a very strong sulfonic acid upon exposure to high-energy radiation. A resist composition comprising a polymer derived from the sulfonium salt is also provided.
提供了一种具有式(1)的聚合可的含阴离子的
硫鎓盐,其中R1为H、F、甲基或三
氟甲基,R2、R3和R4为C1-C10烷基、烯基或氧代烷基或C6-C18芳基、芳基烷基或芳基氧代烷基,或者R2、R3和R4中的两个可以结合形成含S的环,A是具有环状结构的C2-C20烃基,n为0或1。该
硫鎓盐在高能辐射下产生非常强的
磺酸。还提供了一种包含由该
硫鎓盐衍生的聚合物的抗蚀剂组合物。