A chemically amplified photoresist composition, comprises: an acid generator (A) represented by the formula (I), and a resin which comprises a structural unit (b1) derived from a monomer that becomes soluble in an alkali by an action of an acid, a structural unit (b2) derived from a monomer that has an adamantyl group having at least two hydroxyl groups, and a structural unit (b3) derived from a monomer that has a lactone ring;
Wherein Q
1
and Q
2
independently represent a fluorine atom or a C
1
to C
6
perfluoroalkyl group; X
1
represents a single bond or —[CH
2
]
k
—, a —CH
2
— contained in the —[CH
2
]
k
— may be replaced by —O— or —CO, and a hydrogen atom contained in the —[CH
2
]
k
— may be replaced by a C
1
to C
4
aliphatic hydrocarbon group; k represents an integer 1 to 17; Y
1
represents an optionally substituted C
4
to C
36
saturated cyclic hydrocarbon group, the —CH
2
— contained in the saturated cyclic hydrocarbon group may be replaced by —O— or —CO; and Z
+
represents an organic cation.
一种
化学增强型光阻组合物,包括:由式(I)表示的酸发生剂(A),以及
树脂,该
树脂包括由通过酸作用变为碱溶性的单体衍生的结构单元(b1),由至少具有两个羟基的
金刚烷基团的单体衍生的结构单元(b2),以及由具有内酯环的单体衍生的结构单元(b3);其中,Q1和Q2独立地表示
氟原子或C1到C6的
全氟烷基团;X1表示单键或—[ ]k—,在—[ ]k—中包含的—
CH2—可以被—O—或—CO—所取代,在—[ ]k—中包含的氢原子可以被C1到C4的脂肪烃基团所取代;k表示1到17的整数;Y1表示可选的取代的C4到C36饱和
环烃基团,其中饱和
环烃基团中的— —可以被—O—或—CO—所取代;Z+表示有机阳离子。