The present embodiment provides a material for forming an underlayer film for lithography, containing at least any of a compound represented by following formula (1) or a resin including a structural unit derived from a compound represented by the following formula (1),
wherein R1 represents a 2n-valent group having 1 to 60 carbon atoms, or a single bond, each R2 independently represents a halogen atom, a straight, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkoxy group having 1 to 30 carbon atoms, a thiol group, a hydroxyl group, or a group where a hydrogen atom of a hydroxyl group is substituted with an acid-dissociable group, and may be the same or different in the same naphthalene ring or benzene ring, in which at least one R2 represents a group where a hydrogen atom of a hydroxyl group is substituted with an acid-dissociable group, n is an integer of 1 to 4, and structural formulae of n structural units in square brackets [] may be the same or different when n is an integer of 2 or more, X represents an oxygen atom, a sulfur atom, or an uncrosslinked state, each m2 is independently an integer of 0 to 7, provided that at least one m2 is an integer of 1 to 7, and each q is independently 0 or 1.
本实施例提供了一种用于形成光刻用底层薄膜的材料,该材料至少含有下式(1)所代表的化合物中的任何一种,或包括由下式(1)所代表的化合物衍生出的结构单元的
树脂、
其中 R1 代表具有 1 至 60 个碳原子的 2n 价基团或单键,每个 R2 独立地代表卤素原子、具有 1 至 10 个碳原子的直链、支链或环链烷基、具有 6 至 10 个碳原子的芳基、具有 2 至 10 个碳原子的烯基、具有 1 至 30 个碳原子的烷氧基、
硫醇基、羟基或羟基的氢原子被酸分解基团取代的基团,这些基团在同一个
萘环或苯环中可以相同或不同、其中至少一个 R2 代表羟基的氢原子被可酸
水解基团取代的基团,n 为 1 至 4 的整数,当 n 为 2 或 2 以上的整数时,方括号[]中 n 个结构单元的结构式可以相同或不同,X 代表氧原子、
硫原子或未交联状态,每个 m2 独立地为 0 至 7 的整数,条件是至少一个 m2 为 1 至 7 的整数,每个 q 独立地为 0 或 1。