摘要:
A fluorinated monomer has formula (1) wherein R1 is H, F, methyl or trifluoromethyl, R2 is a monovalent hydrocarbon group which may have halogen or oxygen, A is a divalent hydrocarbon group, and k1 is 0, 1 or 2. A polymer derived from the fluorinated monomer may be endowed with appropriate water repellency, water slip, acid lability and hydrolysis and is useful as an additive polymer in formulating a resist composition.
摘要:
A fluorinated monomer has formula (1) wherein R1 is H, F, methyl or trifluoromethyl, R2 is a monovalent hydrocarbon group which may have halogen or oxygen, A is a divalent hydrocarbon group, and k1 is 0, 1 or 2. A polymer derived from the fluorinated monomer may be endowed with appropriate water repellency, water slip, acid lability and hydrolysis and is useful as an additive polymer in formulating a resist composition.
摘要:
A sulfonium salt of a naphthyltetrahydrothiophenium cation having a fluoroalkoxy chain with a specific anion is provided. The sulfonium salt is used as a photoacid generator to form a resist composition which when processed by immersion lithography, offers advantages of restrained dissolution in the immersion water and less pattern dependence or dark/bright bias.
摘要:
A 2,2-bis(fluoroalkyl)oxirane (A) is prepared by reacting a fluorinated alcohol (1) with a chlorinating, brominating or sulfonylating agent under basic conditions to form an oxirane precursor (2) and subjecting the oxirane precursor to ring closure under basic conditions. R1 and R2 are fluoroalkyl groups, R3 and R4 are hydrogen or monovalent hydrocarbon groups, X is chlorine, bromine or —OSO2R5 group, and R5 is alkyl or aryl.
摘要:
A fluorinated monomer has formula (1) wherein R1 is H, F, methyl or trifluoromethyl, R2 and R3 are H or a monovalent hydrocarbon group, R4 to R6 each are a monovalent fluorinated hydrocarbon group, A is a divalent hydrocarbon group, and k1 is 0, 1 or 2. A polymer derived from the fluorinated monomer may be endowed with appropriate water repellency, water slip, acid lability and hydrolysis and is useful as an additive polymer in formulating a resist composition.
摘要:
A chemically amplified positive resist composition comprising (A) a sulfonium salt of 3,3,3-trifluoro-2-hydroxy-2-trifluoromethylpropionic acid, (B) an acid generator, (C) a base resin, and (D) an organic solvent is suited for ArF immersion lithography. The carboxylic acid sulfonium salt is highly hydrophobic and little leached out in immersion water. By virtue of controlled acid diffusion, a pattern profile with high resolution can be constructed.
摘要:
Polymerizable ester compounds having formula (1) are novel wherein R1 is H, F, methyl or trifluoromethyl, R2 is an acid labile group, Aa is a divalent hydrocarbon group which may be separated by —O— or —C(═O)—, and k1 is 0 or 1. They are useful as monomers to produce polymers which are transparent to radiation ≦500 nm. Radiation-sensitive resist compositions comprising the polymers as base resin exhibit excellent developed properties.
摘要:
A sulfonium salt of a naphthyltetrahydrothiophenium cation having a fluoroalkoxy chain with a specific anion is provided. The sulfonium salt is used as a photoacid generator to form a resist composition which when processed by immersion lithography, offers advantages of restrained dissolution in the immersion water and less pattern dependence or dark/bright bias.
摘要:
An acetal compound of formula (1) is provided wherein R1 is H, methyl or trifluoromethyl, R2 is a monovalent C1-C10 hydrocarbon group, R3 and R4 are H or a monovalent C1-C10 hydrocarbon group, R2 and R3 may together form an aliphatic hydrocarbon ring, and X1 is a single bond or a divalent C1-C4 hydrocarbon group. A polymer comprising recurring units derived from the acetal compound is used as a base resin to formulate a resist composition which exhibits a high resolution when processed by micropatterning technology, especially ArF lithography.
摘要:
There is disclosed a polymer having a repeating unit shown by the following general formula (1). There can be, in a photolithography using a high energy beam such as an ArF excimer laser beam and an EUV as a light source, (1) a polymer that gives a resist composition having an appropriate adhesion with a substrate and being capable of forming a pattern having excellent resolution, especially an excellent rectangular pattern profile, (2) a chemically amplified resist composition containing the said polymer, and (3) a patterning process using the said chemically amplified resist composition.