WO2005029189A1 - レジスト用化合物および感放射線性組成物 - Google Patents
レジスト用化合物および感放射線性組成物 Download PDFInfo
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- WO2005029189A1 WO2005029189A1 PCT/JP2004/012879 JP2004012879W WO2005029189A1 WO 2005029189 A1 WO2005029189 A1 WO 2005029189A1 JP 2004012879 W JP2004012879 W JP 2004012879W WO 2005029189 A1 WO2005029189 A1 WO 2005029189A1
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- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- YVBBRRALBYAZBM-UHFFFAOYSA-N perfluorooctane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F YVBBRRALBYAZBM-UHFFFAOYSA-N 0.000 description 1
- YFSUTJLHUFNCNZ-UHFFFAOYSA-N perfluorooctane-1-sulfonic acid Chemical compound OS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F YFSUTJLHUFNCNZ-UHFFFAOYSA-N 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- 125000001828 phenalenyl group Chemical group C1(C=CC2=CC=CC3=CC=CC1=C23)* 0.000 description 1
- 125000001484 phenothiazinyl group Chemical class C1(=CC=CC=2SC3=CC=CC=C3NC12)* 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 239000003504 photosensitizing agent Substances 0.000 description 1
- 125000001388 picenyl group Chemical group C1(=CC=CC2=CC=C3C4=CC=C5C=CC=CC5=C4C=CC3=C21)* 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 125000004591 piperonyl group Chemical group C(C1=CC=2OCOC2C=C1)* 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 150000008442 polyphenolic compounds Chemical class 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 108010001861 pregnancy-associated glycoprotein 1 Proteins 0.000 description 1
- 108010001843 pregnancy-associated glycoprotein 2 Proteins 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 229940090181 propyl acetate Drugs 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000006239 protecting group Chemical group 0.000 description 1
- LNKHTYQPVMAJSF-UHFFFAOYSA-N pyranthrene Chemical group C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC3=C(C=CC=C4)C4=CC4=CC=C1C2=C34 LNKHTYQPVMAJSF-UHFFFAOYSA-N 0.000 description 1
- KOUKXHPPRFNWPP-UHFFFAOYSA-N pyrazine-2,5-dicarboxylic acid;hydrate Chemical compound O.OC(=O)C1=CN=C(C(O)=O)C=N1 KOUKXHPPRFNWPP-UHFFFAOYSA-N 0.000 description 1
- 150000003220 pyrenes Chemical class 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 238000003608 radiolysis reaction Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000007261 regionalization Effects 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- FMKFBRKHHLWKDB-UHFFFAOYSA-N rubicene Chemical group C12=CC=CC=C2C2=CC=CC3=C2C1=C1C=CC=C2C4=CC=CC=C4C3=C21 FMKFBRKHHLWKDB-UHFFFAOYSA-N 0.000 description 1
- 125000003548 sec-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229960002317 succinimide Drugs 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 125000004213 tert-butoxy group Chemical group [H]C([H])([H])C(O*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- FGWRMMTYIZKYMA-UHFFFAOYSA-N tert-butyl-hydroxy-dimethylsilane Chemical group CC(C)(C)[Si](C)(C)O FGWRMMTYIZKYMA-UHFFFAOYSA-N 0.000 description 1
- 125000000037 tert-butyldiphenylsilyl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1[Si]([H])([*]C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 125000001973 tert-pentyl group Chemical group [H]C([H])([H])C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000001935 tetracenyl group Chemical group C1(=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C12)* 0.000 description 1
- 125000003718 tetrahydrofuranyl group Chemical group 0.000 description 1
- 125000004632 tetrahydrothiopyranyl group Chemical group S1C(CCCC1)* 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- AJZGFFKDLABHDD-UHFFFAOYSA-N thiazinane Chemical compound C1CCSNC1 AJZGFFKDLABHDD-UHFFFAOYSA-N 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- 125000005425 toluyl group Chemical group 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 125000005270 trialkylamine group Chemical group 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 description 1
- PGXOVVAJURGPLL-UHFFFAOYSA-N trinaphthylene Chemical group C1=CC=C2C=C3C4=CC5=CC=CC=C5C=C4C4=CC5=CC=CC=C5C=C4C3=CC2=C1 PGXOVVAJURGPLL-UHFFFAOYSA-N 0.000 description 1
- 125000005580 triphenylene group Chemical group 0.000 description 1
- AAAQKTZKLRYKHR-UHFFFAOYSA-N triphenylmethane Chemical group C1=CC=CC=C1C(C=1C=CC=CC=1)C1=CC=CC=C1 AAAQKTZKLRYKHR-UHFFFAOYSA-N 0.000 description 1
- FAYMLNNRGCYLSR-UHFFFAOYSA-M triphenylsulfonium triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F.C1=CC=CC=C1[S+](C=1C=CC=CC=1)C1=CC=CC=C1 FAYMLNNRGCYLSR-UHFFFAOYSA-M 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D311/78—Ring systems having three or more relevant rings
- C07D311/80—Dibenzopyrans; Hydrogenated dibenzopyrans
- C07D311/82—Xanthenes
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0045—Photosensitive materials with organic non-macromolecular light-sensitive compounds not otherwise provided for, e.g. dissolution inhibitors
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/039—Macromolecular compounds which are photodegradable, e.g. positive electron resists
- G03F7/0392—Macromolecular compounds which are photodegradable, e.g. positive electron resists the macromolecular compound being present in a chemically amplified positive photoresist composition
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/30—Imagewise removal using liquid means
- G03F7/32—Liquid compositions therefor, e.g. developers
Definitions
- the present invention relates to a resist compound represented by a specific chemical structural formula, which is useful as an acid-amplifying non-polymeric resist material. Further, the present invention relates to a radiation-sensitive composition containing the compound and an acid generator.
- the compound of the present invention is used as a radiation-sensitive material that responds to ultraviolet rays, far ultraviolet rays, extreme ultraviolet rays (EUV), electron beams, and X-rays, and is used in masks for LSI and VLSI production in the field of electronics. . Background art
- general resist materials are polymer-based materials that can form amorphous thin films.
- a polyhydroxystyrene derivative and a solution prepared by dissolving it in a solvent that dissolves it are coated on a substrate, and the resist thin film is irradiated with ultraviolet light, far ultraviolet light, electron beam, X-ray, etc.
- a line pattern of about 0.08 ⁇ m has been fabricated.
- non-polymeric resist materials include (1) positive and negative resists derived from fullerene, (2) positive and negative resists derived from calixarene, and (3) starburst compounds. (4) Positive resist derived from dendrimer, (5) Positive resist derived from dendrimer / dickline, (6) Starburst with high branching degree And (7) a positive resist derived from a star-paste type compound having trimesic acid as a central skeleton and having an ester bond.
- the etching resistance is good, but the applicability and sensitivity have not reached practical levels (Japanese Patent Application Laid-Open Nos. 7-134413, 9-212182, and 10-282649). JP-A-11-143074, JP-A-11-258796).
- the etching resistance is excellent, a satisfactory pattern cannot be obtained due to poor solubility in a developing solution (Japanese Patent Application Laid-Open Nos. 11-72916, 11-322656, and 11-322656; Kaihei 9-123691-9).
- the image may be distorted during heat treatment after exposure due to low heat resistance (JP-A-2000-305270, JP-A-2002-99088, JP-A-2002-99089) ).
- the manufacturing process is complicated and the heat resistance is low, so the image may be distorted during the heat treatment after exposure, which is not practical. .3999 (2000) P 1202-1206).
- the production process is complicated and the raw materials are expensive, so that it is not practical. (JP-A-2002-49152, JP-A-2003-183227).
- the production process is complicated, the raw materials are expensive, and metal catalysts, which are disliked by semiconductor factories, are not practical.
- the image may be distorted during heat treatment after exposure due to low heat resistance, and the substrate adhesion is insufficient, so that it cannot be said that it is practicable (Japanese Patent Application Laid-Open No. 2002-328466). Gazette).
- Photosensitive resin composition containing a photoactive compound having a hydrophobic group selected from a hydrocarbon group and a heterocyclic group, a linking group, and a hydrophilic group protected by a protective group that can be removed by light irradiation 2002-363123), a resist composition containing a low-molecular-weight dissolution inhibiting compound having a structure in which two or more triphenylmethane structures are non-conjugatedly linked to a portion other than a group that can be decomposed by the action of an acid (Japanese Unexamined Patent Application Publication No. 2001— 31 JP-A No.
- a resist resin composition containing a photoactive compound having a fluorene structure JP-A-2004-137262
- JP-A-2004-137262 a resist resin composition containing a photoactive compound having a fluorene structure
- the compound of the present invention described below is used as a main component.
- No composition is disclosed.
- each of them is a resist composition containing a resin, the line edge roughness of the formed pattern is large and cannot be said to be sufficient.
- the disclosed resist compound when used as a main component, it has high crystallinity, poor film formability, does not have heat resistance enough to withstand semiconductor processes, and can be used generally in semiconductor factories. It was difficult to use a single component due to one of the following problems: poor solubility in safe solvents such as recotyl monoethyl ether acetate and ethyl lactate, and poor substrate adhesion. Disclosure of the invention
- An object of the present invention is to provide a compound and a radiation-sensitive composition that are sensitive to radiation such as excimer laser light such as KrF, extreme ultraviolet (EUV), electron beam, and X-ray.
- Another object of the present invention is to provide a non-polymeric radiation-sensitive composition having high sensitivity, high resolution, high heat resistance, high etching resistance and solvent solubility without using a metal catalyst and in a simple production process. Is to do.
- the present invention comprises 1 to 80% by weight of solid components and 20 to 99% by weight of a solvent. /.
- a radiation-sensitive composition comprising: a) and b):
- a polyphenol compound obtained by a condensation reaction of an aromatic ketone or aromatic aldehyde having 5 to 45 carbon atoms with a compound having 6 to 15 carbon atoms and having 1 to 3 phenolic hydroxyl groups (A) Having a structure in which an acid-dissociable functional group is introduced into at least one phenolic hydroxyl group,
- a radiation-sensitive composition comprising a compound (B) that satisfies the following condition, wherein the total of the compound (B) and the dissolution promoter is 50 to 99.999% by weight based on the total weight of the solid components. It is about. Further, the present invention relates to a compound represented by the formula (1) :
- R 1 is independently a substituted methyl group, a monosubstituted ethyl group, a monosubstituted mono-n-propyl group, a monobranched alkyl group, a silyl group, an acyl group, a monosubstituted alkoxymethyl group, a cyclic ether group And an acid dissociable functional group selected from the group consisting of: and an alkoxycarbol group;
- R 2 is independently a halogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an alkenyl group, an acyl group, an alkoxycarbonyl group, an alkyloxy group, or an aryloy group.
- R 4 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms or an aryl group, and R 5 represents a monovalent substituent having 10 to 18 carbon atoms having a biphenyl structure or a naphthalene structure; or
- One CR 4 R 5 — is bonded to R 4 and R 5 , and one CR 4 R 5 — is a fluorene structure, an acenaphthene structure, a 1-ketoacenaphthene structure or a benzophenone structure having 10 to 1 carbon atoms Represents a divalent substituent of 8;
- m 0 and n 0 are each an integer of 0 to 3; m 1 and ⁇ 1 are each an integer of 0 to 3; m 2 and n 2 are each an integer of 0 to 4; and 1 ⁇ m0 + ml + m2 ⁇ 5, 1 ⁇ n O + n 1 + ⁇ 2 ⁇ 5 % 1 ⁇ m 1 + ⁇ 1 ⁇ 6, l ⁇ mO + ml ⁇ 3, l ⁇ n 0 + nl ⁇ 3;
- p 0 and q 0 are each an integer of 0 to 2
- p 1 and q 1 are each an integer of 0 to 2
- p 2 and q 2 are each an integer of 0 to 3 and I ⁇ p 0 + pl + p 2 ⁇ 4, 1 ⁇ q 0 + q 1+ q 2 ⁇ 4, l ⁇ pl + ql ⁇ 4, l ⁇ p 0 + pl ⁇ 2, 1 ⁇ q 0 + ql ⁇ 2
- An oxygen atom or a sulfur atom to form a xanthene structure or a thioxanthene structure).
- the radiation-sensitive composition of the present invention comprises 1 to 80% by weight of a solid component and 20 to 99% by weight of a solvent, and includes the following a) and b):
- the compound (B) which satisfies the condition (1) is contained, and the total of the compound (B) and the dissolution promoter is 50 to 99.999% by weight based on the total weight of the solid formed part.
- the compound (B) (resist compound) preferably contains a conjugated structure involving at least two benzene rings and a non-bonded electron pair of a hetero atom.
- a conjugated structure involving at least two benzene rings and a non-bonded electron pair of a hetero atom.
- conjugate structure examples include a biphenyl structure, a naphthalene structure, a fluorene structure, an anthracene structure, a phenanthrene structure, a pyrene structure, a benzopyrene structure, an acenaphthene structure, an acenaphthylene structure, a 1-ketoacenaphthene structure, a benzophenone structure, a xanthene structure, and a thioxanthene structure.
- Flavone structure isoflavone structure, indane structure, indene structure, indacene structure, phenalene structure, biphenylene structure, coronene structure, chrysene structure, trinaphthylene structure, hexaphene structure, hexacene structure, rubicene structure, fluoracene structure, asefef Enanthrylene structure, perylene structure, picene structure, pentaphene structure, heptaphene structure, heptacene structure, pyranthrene structure, phenacene structure, naphthacene structure, Tacene structure, aceantrene structure, phenanthrene structure, acephenenthrene structure, azulene structure, triphenylene structure, p-terphenyl structure, m-terphenyl structure, 1,3,5-triphenylbenzene structure, 1 , 2,3-triphenylbenzene structure, 1,2,4-triphenyl
- a relatively inexpensive raw material that is at least one structure selected from a biphenyl structure, a naphthalene structure, a fluorene structure, an anthracene structure, a pyrene structure, an acenaphthene structure, a 1-ketoacenaphthene structure, a benzophenone structure, a xanthene structure, and a thioxanthene structure. It is particularly preferable because it can be introduced from a source.
- the compound (B) resist compound
- R 1 is each independently a substituted methyl group, a monosubstituted ethyl group, a monosubstituted mono n-propyl group, a monobranched alkyl group, a silyl group, an acyl group, a monosubstituted alkoxymethyl
- An acid dissociable functional group selected from the group consisting of a group, a cyclic ether group, and an alkoxycarbonyl group.
- substituted methyl group examples include a methoxymethyl group, a methylthiomethyl group, an ethoxymethyl group, an ethylthiomethyl group, a methoxyethoxymethyl group, a benzyloxymethyl group, a benzylthiomethyl group, a phenacyl group, a 4-bromophenacyl group, and a 4-methylphenoxy group.
- Toxiphenacyl group piperonyl group, methoxycarbonylmethyl group, ethoxycarbonylmethyl group, n-propoxycarbonylmethyl group, i-propoxycarbonylmethinole group, n-butoxycanolebonolemethyl group and tert-butoxycarbonyl Examples include a methyl group.
- 1-substituted ethyl groups include 1-methoxyl, 1-methylthioethyl, 1,1-dimethyloxyl, 1-ethoxyxyl, 1-ethyloxynethyl, 1,1-diethoxyxyl, and 1-phenoxyl.
- 1-phenylthioethynole group 1,1-diphenoxethyl group
- 1-cyclopentyloxyethyl group 1-cyclohexyloxyethyl group, 1-phenylethyl group and 1,1-diphenylethyl group And the like.
- Examples of the 1-substituted-11-propyl group include a 1-methoxy-1n-propyl group and a 1-ethoxy-1n-propyl group.
- Examples of 1-branched alkyl groups include isopropyl, sec-butyl, tert-butyl, 1,1-dimethylpropyl, 1-methylbutyl, and 1,1-dimethylbutyl.
- silyl group examples include a trimethylsilyl group, an ethyldimethylsilyl group, a methylethylsilyl group, a triethylsilyl group, a tert-butyldimethylsilanol group, a tert-butylethylsilyl group, a tert-butyldiphenylsilyl group, Examples include a tree tert-butylsilyl group and a triphenylsilyl group.
- acetyl group examples include acetyl, phenoxyacetyl, propionyl, butyryl, heptanoyl, hexanoyl, valeryl, vivaloynole, isovaleryl, lauryloyl, adamantyl, benzoyl and nayl. And a futoyl group.
- Examples of the mono-substituted alkoxymethyl group include, for example, 1-cyclopentylmethyl
- Examples thereof include a toxicoxymethyl group, a 1-cyclopentylethoxymethyl group, a 1-cyclohexylmethoxymethinole group, a 1-cyclohexylethoxymethyl group, a 1-cyclooctylmethoxymethyl group, and a 1-adamantylmethoxymethyl group.
- examples of the cyclic ether group include a tetrahydrovinylilyl group, a tetrahydrofuranyl group, a tetrahydrothiopyranyl group, a tetrahydrothiofuranyl group, a 4-methoxytetrahydrobilanyl group, and a 4-methoxytetrahydrothiranilyl group.
- alkoxycarbonyl group examples include a methoxycarbonyl group, an ethoxycarbonyl group, an n-propoxycarbonyl group, an i-propoxycarbonyl group, an n-butoxycarbonyl group, and a tert-butoxycarbonyl group. it can.
- tert-butoxycarbonyl group tert-butoxycarbonylmethyl group, 1-methoxethyl group, 1-ethoxyxyl group, 1-cyclohexynoleoxyxetinole group, 1-phenylenol
- An ethynole group, a tert-butyl group, a trimethylsilyl group, a tetrahydroviranyl group and a 1-cyclohexyl methoxymethyl group are preferred.
- R 2 is independently a halogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an alkenyl group, an acyl group, an alkoxycarbonyl group, an alkyloxy group, or an aryloy group. It is a substituent selected from the group consisting of a oxy group, a cyano group and a nitro group.
- halogen atom examples include a chlorine atom, a bromine atom and an iodine atom
- alkyl group examples include a methyl group, an ethyl group, a propyl group, an n-propyl group, an n-butyl group, an isoptyl group, a sec-butyl group
- An alkyl group having 1 to 4 carbon atoms such as a tert-butynole group may be mentioned, and a cycloalkyl group may be a cyclohexyl group, a norponyl group, an adamantyl group, or the like, and an aryl group may be a phenyl group, a tolyl group, or the like.
- Examples thereof include a phenoxy group and the like.
- the alkenyl group include an alkyl group having 2 to 4 carbon atoms such as a butyl group, a propenyl group, an aryl group and a butyr group
- an example of the acetyl group include a formyl group and an acetyl group.
- An aliphatic acyl group having 1 to 5 carbon atoms such as a group, a propionyl group, a butyryl group, a valeryl group, an isovaleryl group, a vivaloyl group, and an aromatic acyl group such as a benzoyl group or a toluoyl group.
- alkoxycarbonyloxy groups such as methoxycarboxy-, ethoxycarbonyloxy, and Niruokishi group, isopropoxycarbonyl O alkoxy group, 11 - butoxy sheets carbonitrile Nino les group, isobutoxy carbo - Ruokishi group, sec- Putokishika Ruponiruokishi group, t Ert- butoxycarbonyl - Ruokishi carbon atoms 2-5 alkoxy group such as a group A carbonyloxy group;
- examples of the alkyloxy group include an acetoxy group, a propionyloxy group, a butyryloxy group, an isoptyryloxy group, a paleryloxy group, an isopareryloxy group, a bivaloyloxy group, and the like;
- the benzoyl group includes a benzoyloxy group.
- R 2 is preferably substituted at the ortho position of the phenolic hydroxyl group.
- R 2 at the ortho position suppresses the crystallinity of the compound (B) and improves film formability. Further, since the solubility of the compound (B) in an alkali developing solution is suppressed, the acid dissociation protection rate of the resist compound can be reduced, so that the solvent solubility and the substrate adhesion are improved, and the resist sensitivity is further improved. Sometimes.
- R 2 effective for this purpose is preferably a bulky structure or an electron donating group, and is preferably an alkyl group (eg, a methyl group, an ethyl group, an isopropyl group, a t-butyl group, a phenyl group, a benzyl group, a cyclobenzyl group).
- R 2 effective for this purpose is preferably a bulky structure or an electron donating group, and is preferably an alkyl group (eg, a methyl group, an ethyl group, an isopropyl group, a t-butyl group, a phenyl group, a benzyl group, a cyclobenzyl group).
- an alkoxy group for example, a methoxy group, an ethoxy group, an isopropoxy group, a phenoxy group, etc
- R 4 is a hydrogen atom, an alkyl group or Ariru group having 1 to 6 carbon atoms
- R 5 Represents a monovalent substituent having 0 to 18 carbon atoms having a biphenyl structure or a naphthalene structure.
- Examples of the alkyl group having 1 to 6 carbon atoms that represents R 4 include a methyl group, an ethyl group, an ⁇ -propyl group, an isopropynole group, an ⁇ -butyl group, an isobutyl group, a sec-butyl group, a t-butyl group, Examples include a linear, branched or cyclic alkyl group such as a pentyl group, a hexyl group and a cyclohexyl group.
- R 5 has the following formula:
- R 3 is a hydrogen atom or an alkyl group having 1 to 6 carbon atoms; p 3 is an integer of 0 to 4; q 3 is an integer of 0 to 3; 0 ⁇ p 3 + It satisfies the condition of q 3 ⁇ 7), and is preferably a monovalent substituent having a biphenyl structure or a naphthalene structure.
- alkyl group having 1 to 6 carbon atoms include the same alkyl groups as those exemplified for R 4 .
- one CR 4 R 5 — is bonded to R 4 and R 5
- one CR 4 R 5 — is a fluorene structure, an acenaphthene structure, a 1-ketoacenaphthene structure or a benzophenone structure having 10 to 18 carbon atoms.
- R 3 , p 3 and q 3 are the same as above; Y is a single bond or a carbonyl group; Z is a methylene group or a carbonyl group)
- Is a divalent substituent represented by m 0 and n 0 are each an integer of 0 to 3; m 1 and n 1 are each an integer of 0 to 3; m 2 and n 2 are each an integer of 0 to 4; 1 ⁇ m 0 + m 1 + m 2 5, 1 ⁇ 0 + ⁇ 1 + ⁇ 2 ⁇ 5 ⁇ l ⁇ ml + nl ⁇ 6, l ⁇ m0 + ml ⁇ 3, satisfy the 1 ⁇ n 0 + nl ⁇ 3.
- R 1 , R 2 R 4 and R 5 are the same as described above;
- p 0 and q 0 are each an integer of 0 to 2;
- p 1 and q 1 are each an integer of 0 to 2;
- p 2 and q 2 are each an integer of 0 to 3;
- X is an oxygen atom or a sulfur atom), or a xanthene structure or a thioxanthen structure.
- the compound of the formula (1) is a low-molecular compound, but has excellent film-forming properties, heat resistance, dry-etching resistance, and low gas-gas properties, and has a high resolution and a high resolution in a resist composition containing the compound as a main component. Performance such as high sensitivity and low line edge roughness can be provided.
- the compound (B) is at least one compound selected from the compounds represented by the following formulas (3), (5) to (12).
- RR 2 , R 4 , R 5 , X, p 2 and q 2 are the same as those described above), and may form a xanthene structure or a thioxanthene structure.
- the compound of formula (3) has practically excellent characteristics such as further excellent substrate adhesion, solvent solubility, heat resistance, and availability of raw materials at relatively low cost.
- aromatic ketones or aldehydes having 5 to 45 carbon atoms include acetophenone, benzophenone, aacetonaphthone, ⁇ -acetonaphthone, 9-fluorenone, acenaphthenone, benzoquinone, naphthoquinone, anthraquinone, acenaphthenequinone, Benzylbifenolene, Benzylnaphthalene, Asinolebiphenyl, Acylanthracene, Acylphenanthrene, Acylphenothiazan, Acy / Revilene, Acynorbenzopyrene, Acynolecene, Acynophenacene, Acylacena Butylene, acetyl-naphthacene, acrylylpentacene, acrylylphenylene, acrylolepyridine, acrylimidazole, acrylimi
- 1-acetonaphthone,] 3-acetonaphthone, 9-fluorenone, acetyl-anthracene, acetylvirene, acenaphthenone, acenaphthenequinone, anthraquinone, 1-naphthaldehyde, and 4-biphenylenylaldehyde are available at low cost and are reactive. Is relatively high, and the production of the polyphenol compound ( ⁇ ) is easy.
- phenol examples include phenol, (C w alkyl) phenol (for example, o-cresol, m-cresolone, p-cresol, etc.). Cresols, o-phenylenophenol, 2-cyclohexylphenol), dialkylphenols (eg, 2,3-dimethylphenol, 2,5-dimethylphenol, 2,6-dimethylphenol), 2,6-di-tert-butyl phenol, etc.), trialkyl phenols, alkoxy phenols (for example, anisols such as o-methoxy phenol), and aryl phenols (for example, o-, m-phenyl phenol) Phenol such as phenol, cycloalkylphenol (such as 2-cyclohexylphenol), halogenated phenols (such as chlorophenol, dichlorophenol, chlorothalesone, bromophenol, etc.) Dibrom
- phenol (C 1-6 alkyl) phenol
- 2- (C- 6 alkyl) phenol o-cresol, o-phenylphenol, 2 —Hexyl hexylphenol, etc.
- power tecol o-cresol, o-phenylphenol, 2 —Hexyl hexylphenol, etc.
- power tecol o-cresol, o-phenylphenol, 2 —Hexyl hexylphenol, etc.
- power tecol o-cresol, o-phenylphenol, 2 —Hexyl hexylphenol, etc.
- power tecol o-cresol, o-phenylphenol, 2 —Hexyl hexylphenol, etc.
- power tecol o-cresol, o-phenylphenol, 2 —Hexyl hexylphenol, etc.
- power tecol o-cresol,
- solubility of the compound (B) in an alkali developing solution can be suppressed, and the rate of introduction of an acid-dissociable functional group into a phenolic hydroxyl group can be reduced.
- a phenol include, for example, 2- (C 6 anolequinole) phenol (0—cresol, o_fuyulefenorele, 2-cyclohexinolephenol, 2-t-butynolephenol, 2,6-diene t-butylphenol, 2-alkoxyphenol (2-methoxyphenol, 2-isopropoxyphenol, 2-phenoxyphenol, etc.).
- the polyphenol compound (A) contains 1 mole of aromatic ketone or aromatic aldehyde. 1 to 3 phenols containing 1 to 3 phenols such as o-cresol, o-cresol, etc. in an amount of 1 mol to an excess amount, acid catalyst (hydrochloric acid or sulfuric acid), and thioacetic acid as a cocatalyst for suppressing by-products
- acid catalyst hydroochloric acid or sulfuric acid
- thioacetic acid as a cocatalyst for suppressing by-products
- react with 0-mercaptopropionic acid at 60 to 150 ° C for 0.5 to 20 hours, and after the reaction is completed, add methanol or isopropyl alcohol to the reaction solution and add 60 to 8 After heating to 0 ° C and stirring for 0.5 to 2 hours, an appropriate amount of pure water is added to precipitate a reaction product, which is cooled to room temperature, filtered, separated, and dried.
- the polyphenol compound (A) contains 1 to 3 phenolic hydroxyl groups after isolating the aromatic ketone or aromatic aldehyde as dihalogenated compound with hydrogen halide or halogen gas. It can also be produced by reacting with a compound.
- a compound for introducing an acid-dissociable functional group such as a tert-based carbonyl group or a tetrahydroviranyl group is added, and the compound is added in the presence of an amine-based catalyst such as triethylamine or dimethylaminopyridine or pyridinyl.
- an acid catalyst such as mutosylate
- the reaction is carried out at normal pressure at 20 to 60 ° C for 6 to 24 hours, and the reaction solution is added to distilled water to precipitate a white solid, which is then washed with distilled water.
- Compound (B) can be produced by purifying by silica gel column chromatography and drying according to the above, but there is no particular limitation.
- Examples of the compound for introducing the acid-dissociable functional group include an acid chloride having an acid-dissociable functional group, an acid anhydride, a dicarbonate, an alkyl halide, a vinyl alkyl ether, a dihydroxypyran, and the like. Is not done.
- the acid dissociable functional group refers to a characteristic group that is cleaved in the presence of an acid to generate a phenolic hydroxyl group.
- the acid-dissociable functional group preferably has a property of causing a chain cleavage reaction in the presence of an acid in order to enable pattern formation with higher sensitivity and higher resolution.
- an acid-dissociable functional group into 10 to 95% of the total number of phenolic hydroxyl groups in the polyphenol compound (A), and it is particularly preferable to introduce 20 to 80%.
- the compound (B) is soluble in the solvent and adheres to the substrate. And sensitivity are further improved.
- the molecular weight of the compound (B) is from 300 to 300, preferably from 300 to 150, more preferably from 400 to 100. When the content is within the above range, the resolution is improved while maintaining the film forming property required for the resist.
- the compound (B) is preferably dissolved in propylene glycol monomethyl ether acetate or ethyl lactate at 23 to 5% by weight or more.
- safe solvents that can be used in semiconductor factories can be used.
- the radiation-sensitive composition of the present invention comprises 1 to 80% by weight of the solid component and 20 to 99% by weight of the solvent, preferably 1 to 50% by weight of the solid component and 50 to 99% by weight of the solvent. %, Particularly preferably 5 to 40% by weight of the solid component and 60 to 95% by weight of the solvent.
- the total content of the compound (B) and the dissolution promoter is 50 to 99.99% by weight, preferably 60 to 9.9% by weight, particularly preferably 60 to 99% by weight, based on the total weight of the solid components. It is preferably 80 to 99% by weight. Within this range, high resolution is obtained and line edge roughness is reduced.
- the mixing ratio of the dissolution accelerator is preferably 0 to 80% by weight, more preferably 20 to 80% by weight, and particularly preferably 30 to 70% by weight based on the total weight of the solid components. Weight ° / 0 . With the above mixing ratio, high sensitivity and high resolution can be obtained, and the line edge roughness force S decreases.
- the radiation-sensitive composition of the present invention contains, as a main component, the compound (B) satisfying the above conditions a) and b), it is heat-resistant to semiconductor processes, propylene glycol monomethyl ether acetate or ethyl lactate.
- Performance required for resist compositions such as solubility in safe solvents, film forming properties, adhesion to silicon substrates, alkali developability, etching resistance, low gas resistance during exposure, high resolution, and low edge roughness. Have both.
- the solvent examples include ethylene glycol monomethyl ether acetates such as ethylene glycol monomethyl ether acetate and ethylene glycol monoethyl ether acetate; and ethylene glycol monomethyl ether such as ethylene glycol monomethyl ether and ethylene glycol monomethyl ether acetate.
- Glyconolemonoolenoyl ethers Propylene Daliconolemonomethyl ether oleate acetate
- P GME A Propylene glycols such as propylene daricol monoethyl ether acetate; propylene glycol monoalkyl ether acetates; propylene blends such as propylene daricol monomethyl ether (PGME) and propylene glycol monoethyl ether Recohol monoalkyl ethers; lactate esters such as methyl lactate and ethyl lactate (EL); aliphatic carboxylic acid esters such as methyl acetate, ethyl acetate, propyl acetate, and butyl acetate; methyl 3-methoxypropionate; Other esters such as methyl ethoxypropionate, methyl 3-ethoxypropionate, and ethyl 3-ethoxypropionate; aromatic hydrocarbons such as toluene and x
- the method for generating an acid is not limited as long as the acid is generated in the radiation-sensitive composition. Finer processing is possible by using excimer lasers instead of ultraviolet rays such as g-rays and i-rays, and further finer processing by using electron beams, extreme ultraviolet rays, X-rays, and ion beams as high-energy rays. Is possible.
- the solid component preferably contains at least one acid generator that generates an acid upon irradiation with any radiation selected from extreme ultraviolet (EUV), electron beam, and X-ray.
- the content of the acid generator is preferably 0.001 to 50% by weight, more preferably 1 to 40% by weight, and particularly preferably 3 to 20% by weight based on the total weight of the solid components. Masure, When used within the above range, a pattern profile with high sensitivity and low edge roughness can be obtained.
- the acid generator is not particularly limited, but is preferably at least one selected from the group consisting of compounds represented by the following formulas (13) to (20).
- R 13 may be the same or different and each independently represents a hydrogen atom, a linear, branched or cyclic alkyl group, a linear, branched or cyclic alkoxy group. 5) is a sulfonate ion or halide ion having an alkyl group, aryl group, halogen-substituted alkyl group or halogen-substituted aryl group.
- R 14 may be the same or different and each is independently a hydrogen atom, a linear, branched or cyclic alkyl group, a linear, branched or cyclic alkoxy group. Represents a hydroxyl group, a hydroxyl group or a halogen atom.
- X- is the same as above.
- Compounds represented by the above formula (14) include bis (4-t-butylphenyl) eodonium trif-norolenomethanesnorefonate, bis (4-t-butynolepheno-nole) iodo-dunimnonafnoroleol n — Butanesulfonate, bis (4-t-ptinolephenyl) eodonium perfluoro-n-octanesulfonate, bis (4-t-peptinole feninole) iodonium-p-toluenes-norrefonate, bis (4-1 t-Ptinolephenyl) odonium benzenesulfonate, bis (4_t-butylphenyl) phosphine-2, -trifluoromethylbenzenesulfonate, bis (4-1: butynophenylenole) Notwithstandingfonate,
- Q is an alkylene group or an arylene group
- R 15 is an alkyl group, an aryl group, a halogen-substituted alkyl group or a halogen-substituted aryl group.
- N- (trifluoromethylsulfonyloxy) succinimide N- (trifluoromethylsulfonyloxy) phthalimid, N- (trifluoromethylsulfonyloxy) Xy) diphenyl maleimide, N- (trifluoromethylsulfonyloxy) bicyclo [2.2.1 2Heptot 5 1,2-dicarboxyimid, N- (trifluoromethylsulfonyloxy) naphthylimide, N- (10-camphorsulfonyloxy) succinimide, N— (10-camphorsulfo-roxy) phthalimim N, (10—Camphorsulfonyloxy) diphenylmaleimide, N— (10—Camphorsulfonyl / reoxy) bicyclo [2.2.1] Heptoto 5-ene-1,2-Dicarboxyimid , N— (10-camphorsulf
- R 16 may be the same or different and are each independently an optionally substituted straight-chain, branched or cyclic alkyl group, an optionally substituted aryl group, It is a substituted heteroaryl group or an optionally substituted aralkyl group.
- the compound represented by the above formula (16) includes difuyuledisulfone, di (4-methynolefuininole) disnorefone, dinaphthinoresinorephon, di (4-tert-petitnorefefininole) disnorefon, di ( 4-Hydroxypheninole Dishonolefon, Ji (3-Hydroxynaphthinole) Disnolefone, Ji (4-Funoleolopheninole) Dishonolefon, Ji (2-fluorophenyl) Disulfone and Ji (4-tolfluorometylphenyl) It is preferably at least one selected from the group consisting of disulfone. (17)
- R 17 may be the same or different, and each is independently an optionally substituted straight-chain, branched or cyclic alkyl group, an optionally substituted aryl group, Or a substituted or unsubstituted aralkyl group.
- the compound represented by the above formula (17) may be a- (methylsulfonyloximinino) -1-phenylacetonitrile, ⁇ - (methylsulfonyloximinino) -14-methoxyphenylacetonitrile, a- (Trifluoromethylsulfonyloxymino) 1-phenylacetonitrile, ⁇ - (trifluoromethylsulfonyloxymino) 1-4-Methoxyphenylacetonitrile, a- (Ethylsulfonyloximino) 14 —Methoxyphenylacetonitrile, a— (Propylsulfonyloxy ximinino) 1-4-Methylphenylacetonitrile and a— (Methylsulfonitrile (Roxiximino) It is preferably at least one selected from the group consisting of 141-bromophenol-acetonitrile.
- R 18 s may be the same or different and are each independently a halogenated alkyl group having one or more chlorine atoms and one or more bromine atoms.
- the halogenated alkyl group preferably has 1 to 5 carbon atoms.
- R 19 and R 2 ° each independently represent an alkyl group having 1 to 3 carbon atoms such as a methyl group, an ethyl group, an n-propyl group, an isopropyl group, a cyclopentyl group, C3-C6 cycloalkyl group such as hexyl group, C1-C3 alkoxy group such as methoxy group, ethoxy group and propoxy group, or phenyl group, tolyl group, naphthyl group and other aryl group.
- it is an aryl group having 6 to 10 carbon atoms.
- L 19 and L 2 ° are each independently an organic group having a 1,2-naphthoquinonediazide group.
- Specific examples of the organic group having a 1,2-naphthoquinonediazide group include 1,2-naphthoquinonediazide-1,4-sulfonyl group, 1,2-naphthoquinonediazido 5-sulfonyl group, 1,2-naphthoquinonediazide group.
- Preferred are 1,2-quinonediazidosulfonyl groups such as dido 6-sulfonyl groups.
- 1,2-naphthoquinonediazido 4-sulfonyl group and 1,2-naphthoquinonediazide-1-sulfonyl group Nyl groups are preferred.
- p is an integer from 1 to 3
- q is an integer from 0 to 4
- J 19 is a single bond, a polymethylene group having 1 to 4 carbon atoms, a cycloalkylene group, a phenylene group, and the following formula (21):
- Z 22 is each independently an alkyl group, a cycloalkyl group or an aryl group, R 22 is an alkyl group, a cycloalkyl group or an alkoxyl group, and r is an integer of 0 to 3. Is a group represented by
- Other acid generators include bis (p-toluenesulfonyl) diazomethane, bis (2,4-dimethylphenylsulfonyl) diazomethane, bis (tert-butylnorlesulfonyl) diazomethane, bis (n-butylsulfonyl) diazomethane, Bis (so-butylsulfonyl) diazomethane, bis (isopropylsulfonyl) diazomethane, bis (n-propylsulfonyl) diazomethane, bis (cyclohexylsulfonole-nore) bisazolephonyldiazomethanes such as diazomethane, 2- ( 4-Methoxyphenyl)-4, 6- (bistrichloromethyl) -1,3,5-triazine, 2-(4-methoxynaphthyl) -4,6 (bistrichloromethyl)
- the dissolution accelerator has relatively low solubility of compound (B) in a developing solution such as an alkali. In this case, it is a component having the effect of increasing its solubility and appropriately increasing the dissolution rate of compound (B) during development.
- a dissolution accelerator those which do not chemically change in the steps of baking the resist film, electron beam irradiation, development and the like are preferable.
- the dissolution promoter include phenolic compounds having a low molecular weight, and specific examples thereof include bisphenols, tris (hydroxyphenyl) methane, and tetrakisphenol. .
- Bisphenols include biphenol, bis (4-hydroxyphenyl) propane, bis (4-hydroxyphenyl) methanone, methylenebisphenol, ethylidenebisphenol, and cyclohexylidenebisphenol. And tris (4-hydroxyphenyl) methane, tris (4-hydroxyphenyl) ethane, and tris (4-hydroxyphenylbenzene). Trisphenols include tris (4-hydroxyphenyl) methane, tris (4-hydroxyphenyl) methane, and tris (4-hydroxyphenyl) ethane.
- dissolution accelerators can be used alone or in combination of two or more.
- the amount of the dissolution promoter is appropriately adjusted depending on the type of the compound (B) to be used, but is preferably 0 to 80% by weight, more preferably 20 to 80% by weight, based on the total amount of the solid components. It is preferably from 80 to 80% by weight, particularly preferably from 30 to 70% by weight.
- the low molecular weight phenolic compound is preferably a compound represented by the following formula (25).
- n 3 is an integer of 1 to 3 each; m4 and n4 are each an integer of 0 to 4;
- p 3 and q 3 are each an integer of 1-2;
- p4 and q4 are each an integer of 0 to 3), or a xanthene structure or a thioxanthene structure.
- the radiation-sensitive composition of the present invention may contain various additives such as an acid diffusion controller, a dissolution controller, a photosensitizer, and a surfactant.
- the acid diffusion controller has an action of controlling the phenomenon that the acid generated from the acid generator due to radiation and hot water irradiation diffuses into the resist film, thereby controlling an undesired chemical reaction in the unexposed area.
- an acid diffusion controller By using such an acid diffusion controller, the storage stability of the radiation-sensitive composition is improved, the resolution is improved, and the standing time before irradiation with an electron beam or the like, Variations in the line width of the resist pattern due to fluctuations in the withdrawal time can be suppressed, resulting in extremely excellent process stability.
- Examples of such an acid diffusion controlling agent include a basic compound having an electron beam radiolysis, such as a basic compound containing a nitrogen atom, a basic sulfonium compound, and a basic odonium compound.
- the acid diffusion controller can be used alone or in combination of two or more.
- the compounding amount of the acid diffusion controller is preferably 0 to 10% by weight, more preferably 0.001 to 5% by weight, and particularly preferably 0.000% by weight, based on the total weight of the solid components. 1-3% by weight.
- the amount of the acid diffusion controller is 0.01% by weight, the resolution, the pattern shape, and the dimensional fidelity tend to decrease depending on the process conditions. Delay time from irradiation to heating When the length is increased, the pattern shape tends to deteriorate in the upper layer portion of the pattern. on the other hand
- the amount of the acid diffusion controller exceeds 10% by weight, the sensitivity of the resist composition and the developability of the unexposed portion tend to decrease.
- the dissolution controlling agent is a component having an effect of controlling the solubility and appropriately reducing the dissolution rate during development.
- a dissolution controlling agent which does not undergo a chemical change in the steps of baking, irradiating, developing and the like of the resist film is preferable.
- the dissolution controlling agent for example, aromatic hydrocarbons such as naphthalene, phenanthrene, anthracene, and acenaphthene; ketones such as acetofone, benzophenone, pheninolephthinoleketone; methylphenylsulfone, diphenylsulfone, and dinaphthylsulfone And the like.
- aromatic hydrocarbons such as naphthalene, phenanthrene, anthracene, and acenaphthene
- ketones such as acetofone, benzophenone, pheninolephthinoleketone
- methylphenylsulfone diphenylsulfone
- dinaphthylsulfone And the like can be used alone or in combination of two or more.
- the amount of the dissolution controlling agent is appropriately adjusted depending on the type of the compound (B) to be used, but is preferably
- Sensitives have the effect of absorbing the energy of the irradiated radiation and transmitting that energy to the photoacid generator, thereby increasing the amount of acid generated, thus increasing the apparent sensitivity of the resist. It is a component that improves.
- a sensitizer include, but are not particularly limited to, benzophenones, biacetyls, pyrenes, phenothiazines, and fluorenes. These sensitizers can be used alone or in combination of two or more.
- the compounding amount of the sensitizer is preferably from 0 to 50% by weight, more preferably from 0.1 to 20% by weight, and particularly preferably from 1 to 10% by weight, based on the total weight of the solid components. % By weight.
- the surfactant is a component having an effect of improving the coating property of the radiation-sensitive composition of the present invention, the developability as a resist, and the like.
- a surfactant any one of an ion type, a cationic type, a nonionic type and an amphoteric type can be used.
- preferred surfactants are nonionic surfactants.
- Nonionic surfactants have an affinity for solvents used in radiation-sensitive compositions Is better and more effective. Examples of nonionic surfactants include polyoxyethylene higher alkyl ethers, polyoxyethylene higher alkyl phenyl ethers, higher fatty acid diesters of polyethylene glycol, and the like.
- the amount of the surfactant is preferably from 0 to 2% by weight, more preferably from 0.001 to 1% by weight, particularly preferably from 0.01 to 1% by weight, based on the total weight of the solid components. 0.1% by weight.
- a dye or a pigment the latent image in the exposed portion can be visualized and the effect of halation during exposure can be reduced.
- an adhesion aid the adhesion to the substrate can be improved.
- the radiation-sensitive composition of the present invention may contain, in addition to the above-mentioned additives, a resin insoluble in water and soluble in an alkaline aqueous solution, or a resin insoluble in water and soluble in an alkaline aqueous solution by the action of an acid. It is good to add a resin that can be developed.
- the resin that can be added examples include a resin in which an acid-dissociable functional group is introduced into a phenol resin or a phenol resin; a resin in which an acid-dissociable functional group is introduced into a nopolak resin or a nopolak resin; a hydrogenated novolak resin or a hydrogenated novolak A resin having an acid-dissociable functional group introduced therein; o-polyhydroxystyrene, m-polyhydroxystyrene, p-polyhydroxystyrene and a copolymer thereof, or o-polyhydroxystyrene; m-polyhydroxystyrene, p-polyhydroxystyrene and resins in which an acid-dissociable functional group has been introduced into a copolymer thereof; an acid-dissociable functional group on an alkyl-substituted polyhydroxystyrene or an alkyl-substituted polyhydroxystyrene.
- An acid-dissociable functional group is introduced into a resin into which an acidic functional group is introduced; a resin in which a part of polyhydroxystyrene is o-alkylated or a resin in which a part of polyhydroxystyrene is o-alkylated.
- Resin styrene-hydroxystyrene copolymer or styrene-hydroxy A resin in which an acid-dissociable functional group is introduced into a hydroxystyrene copolymer; an acid-dissociable functional group is introduced into an ⁇ -methylstyrene-hydroxystyrene copolymer or an ⁇ -methylstyrene-hydroxystyrene copolymer
- Resins Polyalkyl methacrylates Resins obtained by introducing acid-dissociable functional groups into resins or polyalkyl methacrylates, polyolefins, polyesters, polyamides, polyureas, and polyurethanes.
- the line edge roughness increases with the amount of resin added, so there is a tendency for a better pattern profile to be obtained without adding as much as possible.
- the radiation-sensitive composition of the present invention can be obtained by stirring and mixing optional additives such as compound (II), a solvent, a dissolution promoter, and an acid generator.
- optional additives such as compound (II), a solvent, a dissolution promoter, and an acid generator.
- the amount of each additive used is selected from the above range so that the total of the content ratio of each component in the solid component is 100% by weight.
- the method of stirring and mixing and the order of addition are not particularly limited, and can be easily produced based on ordinary knowledge of those skilled in the art.
- the radiation-sensitive composition is spin-coated on a substrate such as a silicon wafer, a gallium arsenide wafer, or a wafer coated with aluminum.
- a resist film is formed by applying by a coating method such as roll coating or roll coating.
- a surface treatment agent may be applied on the substrate in advance.
- the surface treatment agent include a silane coupling agent such as hexamethylene disilazane (eg, a hydrolyzable polymerizable silane coupling agent having a polymerizable group), an anchor coating agent, and a base agent (polybutylacetal, acrylic resin). Resin, butyl acetate resin, epoxy resin, urethane resin, etc.), or a coating agent using a mixture of these base materials and inorganic fine particles.
- the thickness of the resist film is not particularly limited, but is preferably about 0.01 to 10 zm, more preferably about 0.05 to 1 ⁇ , and particularly preferably about 0.08 to 0.5 ⁇ . It is.
- a resist protective film for preventing this may be formed.
- the acid generated by radiation reacts with a compound that reacts with an acid such as an amine floating as an impurity in the atmosphere to deactivate it, deteriorating the resist image and reducing sensitivity Can be suppressed.
- the material for the resist protective film is preferably a water-soluble and acidic polymer. For example, polyacrylic acid, polybutylsulfonic acid and the like can be mentioned.
- the resist film is exposed to a desired pattern with radiation such as ultraviolet rays, extreme ultraviolet rays (EUV), and electron beams.
- the exposed compound (B) is cleaved from its acid-dissociable functional group to form a phenolic hydroxyl group, and changes to a compound that is soluble in an alkaline developer.
- Exposure conditions and the like are appropriately selected according to the composition of the radiation-sensitive composition and the like. In the present invention, in order to stably form a high-precision fine pattern in exposure, it is preferable to perform heating after irradiation with radiation.
- the heating conditions vary depending on the composition of the radiation-sensitive composition and the like, but are preferably 20 to 250 ° C, more preferably 40 to 150 ° C.
- a predetermined resist pattern is formed by developing the exposed resist film with a developer.
- the alkali developing solution include mono-, di- or trialkylamines, mono-, di- or trial-functional amines, heterocyclic amines, tetramethylammonium hydroxide (TMAH), choline and the like.
- An aqueous alkaline solution is used in which at least one kind of the alkaline aldehyde compound is dissolved in a concentration of preferably 1 to 10% by mass, more preferably 1 to 5% by mass.
- an appropriate amount of an alcohol such as methanol, ethanol, or isopropyl alcohol or the above-mentioned surfactant can be added to the alkali developer.
- an alcohol such as methanol, ethanol, or isopropyl alcohol or the above-mentioned surfactant
- Etching methods include dry etching using plasma gas and ⁇ It can be performed by a known method such as wet etching using an alkaline solution, a cupric chloride solution, a ferric chloride solution, or the like.
- plating After forming the resist pattern, plating can be performed.
- the plating method include copper plating, solder plating, nickel plating, and gold plating.
- the remaining resist pattern can be peeled off with an organic solvent or an aqueous solution which is stronger than the aqueous solution used for development.
- organic solvent include PGMEA, PGME, and EL.
- strong alkaline aqueous solution include a 1 to 20% by mass aqueous sodium hydroxide solution and a 1 to 20% by mass hydroxylated aqueous solution.
- An aqueous solution of a power stream may be used.
- the peeling method include a dipping method and a spray method.
- the wiring board on which the resist pattern is formed may be a multilayer wiring board, and may have a small-diameter through hole.
- the wiring substrate obtained by using the radiation-sensitive composition of the present invention may be formed by a method of forming a resist pattern, depositing a metal in a vacuum, and then dissolving the resist pattern with a solution, that is, a lift-off method. I can do it.
- the method for evaluating the compound and the radiation-sensitive composition and the method for evaluating the resist pattern are as follows.
- the solubility test of the compound in a safe solvent was performed at 23 ° C.
- a PGME A 10% by weight solution of the compound is spin-coated on a silicon wafer with a spin coater to form a resist film with a thickness of about 0.2 ⁇ , and then on a hot plate at 110 ° C for 3 minutes It was heated and the state of the resist film was observed. Whitened or concave on the surface The case where convexity occurred was designated as C, the case where partial whitening or irregularities occurred on the surface was designated as B, and the case where the surface property was good was designated as A.
- the resist film obtained in the above test (2) was immersed in a developing solution (TMAH 2.38% aqueous solution) for 3 minutes, and when there was no change in the state of the film by visual inspection, A: film surface roughness or film reduction was observed. Case is C.
- the polyphenol compound PGMEA 10 weight 0/0 solution of (A) was spin coated at a spin coater and foremost, to form a resist film having a thickness of about 0. 2 mu m, 3 minutes then heated at 110 ° C hot plate After that, it was immersed in a TMAH 2.38% aqueous solution for 10 seconds. A indicates that the resist film was completely dissolved and disappeared, and C indicates that the resist film remained even a little.
- Irradiation was performed on this resist film using an electron beam lithography system (acceleration voltage: 50 KeV). After irradiation, heat each at the post-exposure baking temperature (PEB) shown in Table 6 for 60 seconds, immerse in 2.38% TMAH aqueous solution for 30 seconds, and rinse with distilled water for 30 seconds. Dried. Obtained single line or line and space was observed with a scanning electron microscope.
- PEB post-exposure baking temperature
- the resolution was defined as the limit resolution of a single line or line-and-space, and the minimum dose that could be resolved at the limit resolution was defined as the sensitivity.
- o-Cresol 43.2 g (0.4mo 1) (Kanto Chemical Co., Ltd. reagent) and 13-acetonaphthone 17.1 g (0.1mo 1) (Kanto Chemical Co., Ltd. reagent) were mixed together. After heating and dissolving at about 30 ° C., 0.1 ml of sulfuric acid, 0.8 ml of 3-mercaptopropionic acid, and 1 Om1 of toluene were added, and the mixture was reacted with stirring.
- Example 1 In (1) of Example 1, the same procedure was carried out except that 43.2 g (0.4 mol 1) of o-cresol was replaced by 44.0 g (0.4 mol) (force of Kanto Chemical Co., Ltd.). Perform the process to obtain 1- (2-naphthyl) -1,1,1-bis (3,4-dihydroxyphene) Nyl) to give ethane.
- the structure of the compound was confirmed by elemental analysis and 1 H-NMR measurement. The analysis results are shown in Tables 1 and 2.
- Example 7 Synthesis of Compound 5-7
- Example 2 The same as (1) of Example 1 except that 43.2 g (0.4mo 1) of o-talesol was replaced by 53.0 g (0.3 mo 1) of 2-cyclohexylphenol (a reagent manufactured by Honshu Chemical Industry). And the target compound was obtained.
- Example 1 In (1) of Example 1, 43.2 g (0.4 mo 1) of o-thalesol was added. Bisphenol acetonaphthone was obtained by carrying out the same process except that 37.4 g (0.4mo1) (Kanto Chemical Reagent) was used.
- Example 1 In (1) of Example 1, 17.1 g (0.1 m 01) of 3-acetonaphthone was converted to 15.6 g (0.1 mlo 1) of sodium naphthaldehyde (a reagent manufactured by Kanto Chemical Co., Ltd.) The same procedure was followed except that the substitution was carried out, to obtain 1- (1-naphthyl) -11,1-bis (4-hydroxyphenyl) methane.
- sodium naphthaldehyde a reagent manufactured by Kanto Chemical Co., Ltd.
- Example 1 In (1) of Example 1, 17.1 g (0.1 mo 1) of 3-acetonaphthone was changed to 4,4-biphenyl-aldehyde (manufactured by Mitsubishi Gas Chemical Co., Ltd.) 18.2 g (0. Biphenyl aldehyde was obtained by performing the same steps except that 43.2 g (0.4mo 1) of o-creso mono was replaced by 37.4 g (0.4 mmo 1) of phenol.
- 4,4-biphenyl-aldehyde manufactured by Mitsubishi Gas Chemical Co., Ltd.
- Biphenyl aldehyde was obtained by performing the same steps except that 43.2 g (0.4mo 1) of o-creso mono was replaced by 37.4 g (0.4 mmo 1) of phenol.
- Example 6 1.84 g (5 mmo 1) of 1- (2-naphthyl) -1,1-bis (3-methynoleic 4-hydroxyphenyl) ethane was added to the above 1- (4′-biphenyl) -1. The same procedure was carried out except that 1.76 g (5 mMol) of 1,1-bis (4-hydroxyphenyl) methane was used to obtain the desired compound. The structure of the compound was confirmed by elemental analysis and 1 H-NMR measurement. The analysis results are shown in Tables 1 and 2.
- Example 4 1.84 g (51111110 1) of 1,1- (2-naphthyl) -11,1-bis (3-methyl-4-hydroxyphenyl) ethane was added to 1,1-bis (3-cyclohexynolone). 4-Hydroxypheninole) Acenaphthene The same process was carried out except that 2.51 g (5ramo 1) was used to obtain the desired compound. The structure of the compound was confirmed by elemental analysis and 1 H-NMR measurement. The analysis results are shown in Tables 1 and 2.
- Example 17 1,1,1-Bis (4-hydroxyphenyl) acetate obtained in (1) To a solution of 1.76 g (5 mmo1) of naphthene-2-one, 5 ml of anhydrous acetone and 1.2 mg of dimethylaminoviridine was added 2.64 g (12 mmo1) of di-tert-buty / resin carbonate. The solution was added dropwise over 10 minutes and stirred at 40 ° C for 24 hours. The reaction solution was added to a large amount of water to precipitate a solid, and a white powder was obtained. After washing with distilled water three times, suction filtration was performed, and finally, drying under reduced pressure was performed to obtain a target compound. The structure of the compound was confirmed by elemental analysis and 1 H-NMR measurement. The analysis results are shown in Tables 1 and 2.
- Example 20 Synthesis of compound 8-5
- Example 18 The same procedure as in Example 18 was carried out except that 53.0 g (0.3mo 1) of 2-cyclohexylphenol was replaced by 51.0 g (0.3mo 1) of 2-fujylphenol. Got.
- the structure of the compound was confirmed by elemental analysis and 1 H-NMR measurement. The analysis results are shown in Tables 1 and 2.
- a target compound was obtained in the same manner as in Example 6, except that 43.2 g (0.4 mo 1) of 0-cresol was replaced with 44.0 g (0.4 mo 1) of resorcinol.
- the structure of the compound was confirmed by elemental analysis and 1 H-NMR measurement. The analysis results are shown in Tables 1 and 2.
- Example 19 1.76 g (5 mmol) of 1,1-bis (4-hydroxyphenyl) acenaphthene_2-one was added to 1.83 g of 2,8-dihydroxy-1-5- (4-biphenyl) xanthene (5 mmol) was carried out in the same manner as above to obtain the desired compound. The structure of the compound was confirmed by elemental analysis and 1 H-NMR measurement. The analysis results are shown in Tables 1 and 2.
- a target compound was obtained in the same manner as in Example 10, except that 37.4 g (0.4 mmo 1) of phenol was replaced by 44.0 g (0.4 mo 1) of resorcinol.
- the structure of the compound was confirmed by elemental analysis and 1 H-NMR measurement. Display analysis results Shown in 1 and 2.
- Example 1 In Example 1, 43.2 g (0.4mo 1) of o-talesol was replaced with 44.0 g (0.4mo 1) of resorcinol, and 17.1 g (0.1 mo 1 ) Was replaced with 9-fluorene 18.0 g (0.1 mo 1) to obtain the desired compound.
- the structure of the compound was confirmed by elemental analysis and 1 H-NMR measurement. The analysis results are shown in Tables 1 and 2.
- Example 22 is the same as Example 22 except that 18.2 g (0.1 mo 1) of biphenylaldehyde was replaced by 9-fluorenone 18.0 g (0.1 mol 1) (a reagent manufactured by Kanto Chemical Co., Ltd.). The steps were performed to obtain the target compound. The structure of the compound was confirmed by elemental analysis and 1 H-NMR measurement. The analysis results are shown in Tables 1 and 2.
- Example 4 1.84 g (5 mmo 1) of 1- (2-naphthyl) -11,1-bis (3-methynoleic 4-hydroxyphenyl) ethane was used to obtain 2,8-dihydroxyl obtained in Example 24. 5- (9,9-fluorenyl) xanthene The same procedure was performed except that 1.82 g (5 mmo 1) was used, to obtain the desired compound. The structure of the compound was confirmed by elemental analysis and 1 H-NMR measurement. The analysis results are shown in Tables 1 and 2.
- Example 27 Synthesis of compound 12-1
- Example 26 was repeated except that 1-fluorenone 18.0 g (0.1mo1) was replaced by 18.8 g (0.1 mo1) of asenaphthenone to obtain the desired compound. .
- the structure of the compound was confirmed by elemental analysis and 1 H-NMR measurement. The analysis results are shown in Tables 1 and 2.
- R H or t—Futoxycarboyl group
- R H or t-Ftoxycarpho'nyl group
- R H or t -Putoxycarbo'enyl group
- R H or t -Putoxycarpho'nyl group
- Comparative Example 1 4 g (5 mm o 1) of bisphenol A was Nol Z (reagent manufactured by Kanto Chemical Co., Ltd.) 1. The same procedure was followed except that the amount was changed to 34 g (5 mmo 1) to obtain the desired compound. The structure of the compound was confirmed by elemental analysis and 1 H-NMR measurement. The analysis results are shown in Tables 1 and 2.
- Examples 33 to 64 and Comparative Examples 5 to 9 Performance of Compounds and Radiation-Sensitive Compositions Tests were conducted on the performance of the compounds and compositions obtained in Examples 1 to 32 and Comparative Examples 1 to 4. Was. Tables 3 and 4 show the test results.
- Compound 5 6 its intermediate product with 50 mol 0/0 1 _ (2-naphthyl) -1, 1 - bis (3-methyl-4-arsenide Dorokishifueniru) ethane (Compound 14 5) 50 mole% blended mixture (ratio of the number of the substituents OR 1 to the total number of the substituents OR 1 substituent OH 25%) were tested. Tables 3 and 4 show the test results.
- tetrafluoromethane was used as an etching gas on a gallium arsenide wafer substrate.
- dry etching was performed using an RIE etching apparatus for 30 seconds, 60 seconds, 90 seconds, and 120 seconds, and the film thickness was measured using a film thickness meter.
- the etching rate of each sample was determined from the slope of the approximated linear line.
- the resist film obtained by using the composition of Example 72 was 8.8 nm / min
- the resist film obtained by using the composition of Example 86 was 20 nm / min. I raw was confirmed.
- PAG-1 Diphenyltolylsulfonium nanofluorotansulfonate
- PAG-2 Triphenylsulfonium trifluoromethanesulfonate
- Example 72 Using the compositions of Examples 72 and 86 as the radiation-sensitive composition, a 100 nm-thick resist film was obtained on a gallium arsenide wafer substrate, using tetrafluoromethane as an etching gas, Dry etching was performed using an RIE etching apparatus under the etching conditions of 70 sccm, 50 W, and 2 OPa with an etching time of 30 seconds, 60 seconds, 90 seconds, and 120 seconds. The thickness was measured, and the etching rate of each sample was determined from the slope of the approximated linear line. As a result, Example 72: 8.8 nm / min and Example 86: 20 nm / min High etching resistance was confirmed. Industrial applicability
- the radiation-sensitive compound of the present invention is used as a main component of a non-polymeric radiation-sensitive composition containing no metal catalyst, having high sensitivity, high resolution, high heat resistance, high processing resistance, and solvent solubility. .
- a high-resolution and high-sensitivity pattern can be manufactured, and thus a semiconductor element with a high degree of integration can be manufactured with high productivity.
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- Chemical & Material Sciences (AREA)
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- Spectroscopy & Molecular Physics (AREA)
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- Materials For Photolithography (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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EP04772828A EP1666970A4 (en) | 2003-09-18 | 2004-08-30 | COMPOSITION FOR RESIST AND RADIATION COMPATIBLE COMPOSITION |
US10/570,855 US20070059632A1 (en) | 2003-09-18 | 2004-08-30 | Method of manufacturing a semiconductor device |
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JP2003-326686 | 2003-09-18 | ||
JP2003326686 | 2003-09-18 | ||
JP2003-430459 | 2003-12-25 | ||
JP2003430459 | 2003-12-25 | ||
JP2004119889 | 2004-04-15 | ||
JP2004-119889 | 2004-04-15 | ||
JP2004138712 | 2004-05-07 | ||
JP2004-138712 | 2004-05-07 |
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WO2005029189A1 true WO2005029189A1 (ja) | 2005-03-31 |
WO2005029189A8 WO2005029189A8 (ja) | 2005-05-12 |
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PCT/JP2004/012879 WO2005029189A1 (ja) | 2003-09-18 | 2004-08-30 | レジスト用化合物および感放射線性組成物 |
Country Status (5)
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US (1) | US20070059632A1 (ja) |
EP (1) | EP1666970A4 (ja) |
KR (1) | KR20060071423A (ja) |
TW (1) | TW200519538A (ja) |
WO (1) | WO2005029189A1 (ja) |
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US8389197B2 (en) | 2005-07-05 | 2013-03-05 | Tokyo Ohka Kogyo Co., Ltd. | Compound, positive resist composition and resist pattern forming method |
WO2007094436A1 (ja) * | 2006-02-17 | 2007-08-23 | Jsr Corporation | 酸解離性基含有化合物及び感放射線性組成物 |
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EP1666970A4 (en) | 2009-09-02 |
KR20060071423A (ko) | 2006-06-26 |
TW200519538A (en) | 2005-06-16 |
EP1666970A1 (en) | 2006-06-07 |
US20070059632A1 (en) | 2007-03-15 |
WO2005029189A8 (ja) | 2005-05-12 |
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