A new series of anionic photoacid generators (PAGs) and corresponding polymers were prepared. The thermostability of PAG bound polymers was superior to that of PAG blend polymers. PAG incorporated into the polymer main chain showed improved resolution when compared with the PAG blend polymers. This was demonstrated by extreme ultraviolet lithography (EUVL) results: the fluorine PAG bound polymer resist gave 45 nm (1 : 1), 35 nm (1 : 2), 30 nm (1 : 3) and 20 nm (1 : 4) Line/Space as well as the 50 nm (1 : 1) elbow pattern.
制备了一系列新的阴离子光酸发生器(PAG)和相应的聚合物。PAG 结合聚合物的热稳定性优于 PAG 共混聚合物。与 PAG 共混聚合物相比,加入聚合物主链的 PAG 具有更高的分辨率。极紫外光刻(EUVL)结果证明了这一点:
氟 PAG 结合聚合物抗蚀剂可产生 45 nm(1:1)、35 nm(1:2)、30 nm(1:3)和 20 nm(1:4)的线/空间以及 50 nm(1:1)的弯头图案。