申请人:Ohsawa Youichi
公开号:US20080085469A1
公开(公告)日:2008-04-10
Photoacid generators generate sulfonic acids of formula (1a) upon exposure to high-energy radiation.
RC(═O)R
1
—COOCH(CF
3
)CF
2
SO
3
−
H
+
(1a)
R is hydroxyl, alkyl, aryl, hetero-aryl, alkoxy, aryloxy or hetero-aryloxy, R
1
is a divalent organic group which may have a heteroatom (O, N or S) containing substituent, or R
1
may form a cyclic structure with R. The photoacid generators are compatible with resins and can control acid diffusion and are thus suited for use in chemically amplified resist compositions.
光酸发生剂在高能辐射作用下生成式(1a)的磺酸。RC(═O)R1—COOCH(CF3)CF2SO3−H+(1a)中,R为羟基、烷基、芳基、杂芳基、烷氧基、芳氧基或杂芳氧基,R1为可能含有杂原子(O、N或S)取代基的二价有机基团,或R1可与R形成环状结构。这些光酸发生剂与树脂相容,可以控制酸的扩散,因此适用于化学增感抗蚀组合物中的使用。