A photoacid generator compound has formula (1)
wherein n is zero or 1; and R
1
-R
6
are each independently hydrogen, halogen, or unsubstituted or substituted C
1-20
linear or branched alkyl, C
1-20
cycloalkyl, C
6-20
aryl, C
3-20
heteroaryl, or an acid-generating group having the structure
*L-Z
−
M
+
]
wherein L is an unsubstituted or substituted C
1-50
divalent group; Z
−
is a monovalent anionic group; and M
+
is an iodonium or sulfonium cation. Geminal R groups can combine to form a ring with the carbon to which they are attached, as long as no more than two such rings are formed. At least one of R
1
-R
6
includes the acid-generating group or two germinal R groups combine to form the acid-generating group. Also described are a photoresist composition incorporating the photoacid generator compound, a coated substrate including a layer of the photoresist composition, and a method of forming an electronic device using a layer of the photoresist composition.
一种光酸发生剂化合物的
化学式为(1),其中n为零或1;R1-R6各自独立地为氢、卤素、未取代或取代的C1-20线性或支链烷基、C1-20环烷基、C6-20芳基、C3-20杂环芳基或具有结构*L-Z−M+的产生酸的基团,其中L为未取代或取代的C1-50二价基团;Z−为单价阴离子基团;M+为
碘离子或
硫离子阳离子。同位素R基团可以结合形成与它们附着的碳原子的环,只要不形成超过两个这样的环即可。R1-R6中至少有一个包括产生酸的基团,或两个同位素R基团结合形成产生酸的基团。还描述了包含光酸发生剂化合物的光刻胶组合物、包括光刻胶组合物层的涂覆基板以及使用光刻胶组合物层形成电子器件的方法。