摘要:
A positive resist composition comprises a polymer comprising recurring units having a sulfonium salt incorporated therein as a base resin which becomes soluble in alkaline developer under the action of acid. The polymer generates a strong sulfonic acid upon exposure to high-energy radiation so as to facilitate effective scission of acid labile groups in the resist composition.
摘要:
Photoacid generators generate sulfonic acids of formula (1a) or (1c) upon exposure to high-energy radiation. R1—COOCH(CF3)CF2SO3+H+ (1a) R1—O—COOCH(CF3)CF2SO3−H+ (1c) R1 is a C20-C50 hydrocarbon group having a steroid structure. The photoacid generators are compatible with resins and can control acid diffusion and are thus suited for use in chemically amplified resist compositions.
摘要:
Photoacid generators generate sulfonic acids of formula (1a) or (1b) upon exposure to high-energy radiation. R1—COOCH2CF2SO3−H+ (1a) R1—O—COOCH2CF2SO3−H+ (1b) R1 is a monovalent C20-C50 hydrocarbon group of steroid structure which may contain a heteroatom. The bulky steroid structure ensures adequate control of acid diffusion. The photoacid generators are compatible with resins and suited for use in chemically amplified resist compositions.
摘要:
The photoacid generator produces a sulfonic acid which has a bulky cyclic structure in the sulfonate moiety and a straight-chain hydrocarbon group and thus shows a controlled acid diffusion behavior and an adequate mobility. The PAG is fully compatible with a resin to form a resist composition which performs well during the device fabrication process and solves the problems of resolution, LWR, and exposure latitude.
摘要:
A positive resist composition comprises a polymer comprising recurring units having a sulfonium salt incorporated therein as a base resin which becomes soluble in alkaline developer under the action of acid. The polymer generates a strong sulfonic acid upon exposure to high-energy radiation so as to facilitate effective scission of acid labile groups in the resist composition.
摘要:
The photoacid generator produces a sulfonic acid which has a bulky cyclic structure in the sulfonate moiety and a straight-chain hydrocarbon group and thus shows a controlled acid diffusion behavior and an adequate mobility. The PAG is fully compatible with a resin to form a resist composition which performs well during the device fabrication process and solves the problems of resolution, LWR, and exposure latitude.
摘要:
Sulfonate salts have the formula: CF3—CH(OH)—CF2SO3−M+ wherein M+ is a Li, Na, K, ammonium or tetramethylammonium ion. Because of inclusion within the molecule of a hydroxyl group which is a polar group, the sulfonic acids are effective for restraining the length of acid diffusion through hydrogen bond or the like. The photoacid generators that generate these sulfonic acids perform well during the device fabrication process including coating, pre-baking, exposure, post-exposure baking, and developing steps. The photoacid generators are little affected by water left on the wafer during the ArF immersion lithography.
摘要翻译:磺酸盐具有下式:CF 3 -CH(OH)-CF 2 SO 3 SO 2 - > + +其中M + +是Li,Na,K,铵或四甲基铵离子。 由于在分子内包含作为极性基团的羟基,所以磺酸对于抑制通过氢键等的酸扩散的长度是有效的。 产生这些磺酸的光酸产生剂在器件制造过程中表现良好,包括涂层,预烘烤,曝光,曝光后烘烤和显影步骤。 在ArF浸没光刻期间,光致酸发生器几乎不受水晶体上剩余的水分的影响。
摘要:
Photoacid generators generate sulfonic acids of formula (1a) or (1b) upon exposure to high-energy radiation. R1—COOCH2CF2SO3−H+ (1a) R1—O—COOCH2CF2SO3−H+ (1b) R1 is a monovalent C20-C50 hydrocarbon group of steroid structure which may contain a heteroatom. The bulky steroid structure ensures adequate control of acid diffusion. The photoacid generators are compatible with resins and suited for use in chemically amplified resist compositions.
摘要:
Photoacid generators generate sulfonic acids of formula (1a) upon exposure to high-energy radiation. ROC(═O)R1—COOCH2CF2SO3−H+ (1a) RO is OH or C1-C20 organoxy, R1 is a divalent C1-C20 aliphatic group or forms a cyclic structure with RO. The photoacid generators are compatible with resins and can control acid diffusion and are thus suited for use in chemically amplified resist compositions.
摘要:
Photoacid generators generate sulfonic acids of formula (1a) or (1c) upon exposure to high-energy radiation. R1—COOCH(CF3)CF2SO3−H+ (1a) R1—O—COOCH(CF3)CF2SO3−H+ (1c) R1 is a C20-C50 hydrocarbon group having a steroid structure. The photoacid generators are compatible with resins and can control acid diffusion and are thus suited for use in chemically amplified resist compositions.