摘要:
A resist composition is provided comprising a fluorochemical surfactant which functions to reduce the contact angle of a coating of the resist composition with water or an aqueous base developer as the amount of the fluorochemical surfactant increases. The resist composition forms a coating having a thickness uniformity, free of defects, and wettable with an aqueous base developer when applied onto a substrate, and has a good storage stability in that particles do not increase during storage in solution form.
摘要:
A polymer comprising recurring units having a fluorinated carboxylic acid onium salt structure on a side chain is used to formulate a chemically amplified positive resist composition. When the composition is processed by lithography to form a positive pattern, the diffusion of acid in the resist film is uniform and slow, and the pattern is improved in LER.
摘要:
A high resolution resist material comprising an acid generator is provided so that high sensitivity and high resolution for high energy rays of 300 nm or less, small line-edge roughness, and excellence in heat stability and storage stability are obtained. Moreover, a pattern formation method using this resist material are provided. Specifically, a novel compound of the following general formula (1); and a positive resist material comprising this compound preferably as a photo acid generator, and a base resin; are provided. This positive resist material may contain a basic compound or a dissolution inhibitor. Further, the present invention provides a pattern formation method comprising the steps of applying this positive resist material on a substrate, then heat-treating the material, exposing the treated material to a high energy ray having a wavelength of 300 nm or less via a photo mask, optionally heat-treating the exposed material, and developing the material using a developer
摘要:
There is disclosed a sulfonium salt represented by the following general formula (1). In the formula, X and Y each represents a group having a polymerizable functional group; Z represents a divalent hydrocarbon group having 1 to 33 carbon atoms optionally containing a hetero atom; R1 represents a divalent hydrocarbon group having 1 to 36 carbon atoms optionally containing a hetero atom; and R2 and R3 each represents a monovalent hydrocarbon group having 1 to 30 carbon atoms optionally containing a hetero atom or R2 and R3 may be bonded with each other to form a ring together with a sulfur atom in the formula. There can be provided a sulfonium salt usable as a resist composition providing high resolution and excellent in LER in photolithography using a high energy beam such as an ArF excimer laser, an EUV light and an electron beam as a light source, a polymer obtained from the sulfonium salt, a resist composition containing the polymer and a patterning process using the resist composition.
摘要:
A sulfonium salt has formula (1) wherein R1 is a monovalent hydrocarbon group except vinyl and isopropenyl, R2, R3, and R4 are alkyl, alkenyl, oxoalkyl, aryl, aralkyl or aryloxoalkyl or may bond together to form a ring with the sulfur atom, and n is 1 to 3. A chemically amplified resist composition comprising the sulfonium salt is capable of forming a fine feature pattern of good profile after development due to high resolution, improved focal latitude, and minimized line width variation and profile degradation upon prolonged PED.
摘要:
A polymer comprising recurring units having a fluorinated carboxylic acid onium salt structure on a side chain is used to formulate a chemically amplified positive resist composition. When the composition is processed by lithography to form a positive pattern, the diffusion of acid in the resist film is uniform and slow, and the pattern is improved in LER.
摘要:
A chemically amplified positive resist composition comprises a compound having an amine oxide structure as a basic component, a base resin, a photoacid generator, and an organic solvent. The resist composition exhibits a high resolution, significantly prevents a line pattern from collapsing after development, and has improved etch resistance.
摘要:
There is disclosed a chemically-amplified positive resist composition comprising, as main components, (A) a base polymer, which contains one or more kinds of a monomer unit represented by the following general formula (1) and the like, and is an alkali-insoluble polymer whose hydroxyl group is partly protected by an acetal group while alkali-soluble when deprotected by an acid catalyst, (B) a sulfonium salt containing a sulfonate anion, (C) a basic component, and (D) an organic solvent. In a lithography technology by a photo resist, an extremely high temporal stability is necessary. In addition, it must give a good pattern profile not dependent on a substrate and have a high resolution power. There can be provided a chemically-amplified positive resist composition which can solve these problems simultaneously, a resist patterning process using the same, and a method for producing a photo mask blank.
摘要:
A photoacid generator has formula (1). A chemically amplified resist composition comprising the photoacid generator has advantages including a high resolution, focus latitude, long-term PED dimensional stability, and a satisfactory pattern profile shape. When the photoacid generator is combined with a resin having acid labile groups other than those of the acetal type, resolution and top loss are improved. The composition is suited for deep UV lithography.
摘要:
A chemically amplified positive resist composition is provided comprising (A) a resin containing acid labile groups other than acetal type which changes its solubility in an alkaline developer as a result of the acid labile groups being eliminated under the action of acid and (B) specific sulfonium salts as a photoacid generator.The composition is improved in resolution and focus latitude, minimized in line width variation and profile degradation even on prolonged PED, improved in pattern profile after development, minimized in pattern feature size variation within the wafer plane by uneven development and thus best suited in the deep-UV lithography.