申请人:Rohm and Haas Electronic Materials LLC
公开号:EP2455812A2
公开(公告)日:2012-05-23
A copolymer has the formula:
wherein R1-R5 are each independently H, C1-6 alkyl, or C4-6 aryl, R6 is a fluorinated or non-fluorinated C5-30 acid decomposable group; each Ar is independently a monocyclic, polycyclic, or fused polycyclic C6-20 aryl group; each of R7 and R8 is independently -OR11 or a - C(CF3)2OR11 group where each occurrence of R11 is independently H, a fluorinated or non-fluorinated C5-30 acid decomposable group, or a combination of these; each R9 is independently F, a C1-10 alkyl, C1-10 fluoroalkyl, C1-10 alkoxy, or a C1-10 fluoroalkoxy group; R10 is a cation-bound C10-40 photoacid generator-containing group, mole fractions a, b, and d are independently 0 to 0.80, mole fraction c is 0.01 to 0.80, e is 0 to 0.50 provided that where a, b, and d are 0, e is greater than 0, the sum of the mole fractions a+b+c+d+e is 1, 1 and m are independently integers of 1 to 4, and n is an integer of 0 to 5. A photoresist, and a coated substrate, each also include the copolymer.
共聚物的分子式为
其中R1-R5各自独立地为H、C1-6烷基或C4-6芳基,R6为氟化或非氟化C5-30可酸分解基团;每个Ar独立地为单环、多环或融合多环C6-20芳基;R7和R8各自独立地为-OR11或-C(CF3)2OR11基团,其中R11的每个出现独立地为H、氟化或非氟化C5-30可酸分解基团或它们的组合;每个 R9 独立地是 F、C1-10 烷基、C1-10 氟烷基、C1-10 烷氧基或 C1-10 氟烷氧基; R10 是含阳离子的 C10-40 光酸发生器基团,摩尔分数 a、b 和 d 独立地为 0 至 0.80,摩尔分数 c 为 0.01 至 0.80,e 为 0 至 0.50,条件是其中 a、b 和 d 为 0,e 大于 0,摩尔分数 a+b+c+d+e 之和为 1,1 和 m 独立地为 1 至 4 的整数,n 为 0 至 5 的整数。光致抗蚀剂和涂层基底也分别包括共聚物。