WO2016080217A1 - 湿式除去が可能なシリコン含有レジスト下層膜形成組成物 - Google Patents
湿式除去が可能なシリコン含有レジスト下層膜形成組成物 Download PDFInfo
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- WO2016080217A1 WO2016080217A1 PCT/JP2015/081345 JP2015081345W WO2016080217A1 WO 2016080217 A1 WO2016080217 A1 WO 2016080217A1 JP 2015081345 W JP2015081345 W JP 2015081345W WO 2016080217 A1 WO2016080217 A1 WO 2016080217A1
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- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 125000005420 sulfonamido group Chemical group S(=O)(=O)(N*)* 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
- MUTNCGKQJGXKEM-UHFFFAOYSA-N tamibarotene Chemical compound C=1C=C2C(C)(C)CCC(C)(C)C2=CC=1NC(=O)C1=CC=C(C(O)=O)C=C1 MUTNCGKQJGXKEM-UHFFFAOYSA-N 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- NVQCTSGVFRPZCZ-UHFFFAOYSA-N tert-butyl 3-oxohexaneperoxoate;zirconium Chemical compound [Zr].CCCC(=O)CC(=O)OOC(C)(C)C.CCCC(=O)CC(=O)OOC(C)(C)C NVQCTSGVFRPZCZ-UHFFFAOYSA-N 0.000 description 1
- UQMOLLPKNHFRAC-UHFFFAOYSA-N tetrabutyl silicate Chemical compound CCCCO[Si](OCCCC)(OCCCC)OCCCC UQMOLLPKNHFRAC-UHFFFAOYSA-N 0.000 description 1
- BRGJIIMZXMWMCC-UHFFFAOYSA-N tetradecan-2-ol Chemical compound CCCCCCCCCCCCC(C)O BRGJIIMZXMWMCC-UHFFFAOYSA-N 0.000 description 1
- RAOIDOHSFRTOEL-UHFFFAOYSA-N tetrahydrothiophene Chemical compound C1CCSC1 RAOIDOHSFRTOEL-UHFFFAOYSA-N 0.000 description 1
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 1
- ZUEKXCXHTXJYAR-UHFFFAOYSA-N tetrapropan-2-yl silicate Chemical compound CC(C)O[Si](OC(C)C)(OC(C)C)OC(C)C ZUEKXCXHTXJYAR-UHFFFAOYSA-N 0.000 description 1
- ZQZCOBSUOFHDEE-UHFFFAOYSA-N tetrapropyl silicate Chemical compound CCCO[Si](OCCC)(OCCC)OCCC ZQZCOBSUOFHDEE-UHFFFAOYSA-N 0.000 description 1
- LPSKDVINWQNWFE-UHFFFAOYSA-M tetrapropylazanium;hydroxide Chemical compound [OH-].CCC[N+](CCC)(CCC)CCC LPSKDVINWQNWFE-UHFFFAOYSA-M 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- YZVRVDPMGYFCGL-UHFFFAOYSA-N triacetyloxysilyl acetate Chemical compound CC(=O)O[Si](OC(C)=O)(OC(C)=O)OC(C)=O YZVRVDPMGYFCGL-UHFFFAOYSA-N 0.000 description 1
- GYZQBXUDWTVJDF-UHFFFAOYSA-N tributoxy(methyl)silane Chemical compound CCCCO[Si](C)(OCCCC)OCCCC GYZQBXUDWTVJDF-UHFFFAOYSA-N 0.000 description 1
- OAVPBWLGJVKEGZ-UHFFFAOYSA-N tributoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OCCCC)(OCCCC)OCCCC)CCC2OC21 OAVPBWLGJVKEGZ-UHFFFAOYSA-N 0.000 description 1
- FQYWWLSIKWDAEC-UHFFFAOYSA-N tributoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCCCO[Si](OCCCC)(OCCCC)CCCOCC1CO1 FQYWWLSIKWDAEC-UHFFFAOYSA-N 0.000 description 1
- GQIUQDDJKHLHTB-UHFFFAOYSA-N trichloro(ethenyl)silane Chemical compound Cl[Si](Cl)(Cl)C=C GQIUQDDJKHLHTB-UHFFFAOYSA-N 0.000 description 1
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- QDGORAVIRGNDBW-UHFFFAOYSA-N trichloro-(2-ethoxyphenyl)silane Chemical compound CCOC1=CC=CC=C1[Si](Cl)(Cl)Cl QDGORAVIRGNDBW-UHFFFAOYSA-N 0.000 description 1
- PUOCWUHEMWGXIQ-UHFFFAOYSA-N trichloro-(2-methoxy-2-phenylethyl)silane Chemical compound COC(C[Si](Cl)(Cl)Cl)C1=CC=CC=C1 PUOCWUHEMWGXIQ-UHFFFAOYSA-N 0.000 description 1
- YTWFIHFZPSAMFV-UHFFFAOYSA-N trichloro-(2-methoxyphenyl)silane Chemical compound COC1=CC=CC=C1[Si](Cl)(Cl)Cl YTWFIHFZPSAMFV-UHFFFAOYSA-N 0.000 description 1
- SBNVEGJDYHYOSA-UHFFFAOYSA-N trichloro-(2-propan-2-yloxyphenyl)silane Chemical compound CC(C)OC1=CC=CC=C1[Si](Cl)(Cl)Cl SBNVEGJDYHYOSA-UHFFFAOYSA-N 0.000 description 1
- BXYASSFFTRSIGT-UHFFFAOYSA-N trichloro-[(2-methylpropan-2-yl)oxy-phenylmethyl]silane Chemical compound CC(C)(C)OC([Si](Cl)(Cl)Cl)C1=CC=CC=C1 BXYASSFFTRSIGT-UHFFFAOYSA-N 0.000 description 1
- OUMAYXXJSADQBQ-UHFFFAOYSA-N trichloro-[2-[(2-methylpropan-2-yl)oxy]phenyl]silane Chemical compound CC(C)(C)OC1=CC=CC=C1[Si](Cl)(Cl)Cl OUMAYXXJSADQBQ-UHFFFAOYSA-N 0.000 description 1
- ZZARCDHCAFJWJC-UHFFFAOYSA-N trichloro-[ethoxy(phenyl)methyl]silane Chemical compound CCOC([Si](Cl)(Cl)Cl)C1=CC=CC=C1 ZZARCDHCAFJWJC-UHFFFAOYSA-N 0.000 description 1
- SMGOKIYLLQQVJE-UHFFFAOYSA-N trichloro-[methoxy(phenyl)methyl]silane Chemical compound COC([Si](Cl)(Cl)Cl)C1=CC=CC=C1 SMGOKIYLLQQVJE-UHFFFAOYSA-N 0.000 description 1
- UEUXEIHYBASMLX-UHFFFAOYSA-N trichloro-[phenyl(propan-2-yloxy)methyl]silane Chemical compound CC(C)OC([Si](Cl)(Cl)Cl)C1=CC=CC=C1 UEUXEIHYBASMLX-UHFFFAOYSA-N 0.000 description 1
- YNJBWRMUSHSURL-UHFFFAOYSA-N trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 description 1
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 description 1
- DENFJSAFJTVPJR-UHFFFAOYSA-N triethoxy(ethyl)silane Chemical compound CCO[Si](CC)(OCC)OCC DENFJSAFJTVPJR-UHFFFAOYSA-N 0.000 description 1
- UNKMHLWJZHLPPM-UHFFFAOYSA-N triethoxy(oxiran-2-ylmethoxymethyl)silane Chemical compound CCO[Si](OCC)(OCC)COCC1CO1 UNKMHLWJZHLPPM-UHFFFAOYSA-N 0.000 description 1
- OHKFEBYBHZXHMM-UHFFFAOYSA-N triethoxy-[1-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CCO[Si](OCC)(OCC)C(CCC)OCC1CO1 OHKFEBYBHZXHMM-UHFFFAOYSA-N 0.000 description 1
- SJQPASOTJGFOMU-UHFFFAOYSA-N triethoxy-[1-(oxiran-2-ylmethoxy)ethyl]silane Chemical compound CCO[Si](OCC)(OCC)C(C)OCC1CO1 SJQPASOTJGFOMU-UHFFFAOYSA-N 0.000 description 1
- NFRRMEMOPXUROM-UHFFFAOYSA-N triethoxy-[1-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)C(CC)OCC1CO1 NFRRMEMOPXUROM-UHFFFAOYSA-N 0.000 description 1
- UDUKMRHNZZLJRB-UHFFFAOYSA-N triethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OCC)(OCC)OCC)CCC2OC21 UDUKMRHNZZLJRB-UHFFFAOYSA-N 0.000 description 1
- FVMMYGUCXRZVPJ-UHFFFAOYSA-N triethoxy-[2-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CCO[Si](OCC)(OCC)CC(CC)OCC1CO1 FVMMYGUCXRZVPJ-UHFFFAOYSA-N 0.000 description 1
- RWJUTPORTOUFDY-UHFFFAOYSA-N triethoxy-[2-(oxiran-2-ylmethoxy)ethyl]silane Chemical compound CCO[Si](OCC)(OCC)CCOCC1CO1 RWJUTPORTOUFDY-UHFFFAOYSA-N 0.000 description 1
- CFUDQABJYSJIQY-UHFFFAOYSA-N triethoxy-[2-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CC(C)OCC1CO1 CFUDQABJYSJIQY-UHFFFAOYSA-N 0.000 description 1
- NLKPPXKQMJDBFO-UHFFFAOYSA-N triethoxy-[3-(7-oxabicyclo[4.1.0]heptan-4-yl)propyl]silane Chemical compound C1C(CCC[Si](OCC)(OCC)OCC)CCC2OC21 NLKPPXKQMJDBFO-UHFFFAOYSA-N 0.000 description 1
- KPNCYSTUWLXFOE-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CCO[Si](OCC)(OCC)CCC(C)OCC1CO1 KPNCYSTUWLXFOE-UHFFFAOYSA-N 0.000 description 1
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- PSUKBUSXHYKMLU-UHFFFAOYSA-N triethoxy-[4-(7-oxabicyclo[4.1.0]heptan-4-yl)butyl]silane Chemical compound C1C(CCCC[Si](OCC)(OCC)OCC)CCC2OC21 PSUKBUSXHYKMLU-UHFFFAOYSA-N 0.000 description 1
- GSUGNQKJVLXBHC-UHFFFAOYSA-N triethoxy-[4-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCCOCC1CO1 GSUGNQKJVLXBHC-UHFFFAOYSA-N 0.000 description 1
- CSDVDSUBFYNSMC-UHFFFAOYSA-N triethoxysilylmethyl acetate Chemical compound CCO[Si](OCC)(OCC)COC(C)=O CSDVDSUBFYNSMC-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 1
- JOHWNGGYGAVMGU-UHFFFAOYSA-N trifluorochlorine Chemical compound FCl(F)F JOHWNGGYGAVMGU-UHFFFAOYSA-N 0.000 description 1
- 125000005951 trifluoromethanesulfonyloxy group Chemical group 0.000 description 1
- JLGNHOJUQFHYEZ-UHFFFAOYSA-N trimethoxy(3,3,3-trifluoropropyl)silane Chemical compound CO[Si](OC)(OC)CCC(F)(F)F JLGNHOJUQFHYEZ-UHFFFAOYSA-N 0.000 description 1
- LFBULLRGNLZJAF-UHFFFAOYSA-N trimethoxy(oxiran-2-ylmethoxymethyl)silane Chemical compound CO[Si](OC)(OC)COCC1CO1 LFBULLRGNLZJAF-UHFFFAOYSA-N 0.000 description 1
- FFJVMNHOSKMOSA-UHFFFAOYSA-N trimethoxy-[1-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CCCC([Si](OC)(OC)OC)OCC1CO1 FFJVMNHOSKMOSA-UHFFFAOYSA-N 0.000 description 1
- DAVVOFDYOGMLNQ-UHFFFAOYSA-N trimethoxy-[1-(oxiran-2-ylmethoxy)ethyl]silane Chemical compound CO[Si](OC)(OC)C(C)OCC1CO1 DAVVOFDYOGMLNQ-UHFFFAOYSA-N 0.000 description 1
- FNBIAJGPJUOAPB-UHFFFAOYSA-N trimethoxy-[1-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)C(CC)OCC1CO1 FNBIAJGPJUOAPB-UHFFFAOYSA-N 0.000 description 1
- ZNXDCSVNCSSUNB-UHFFFAOYSA-N trimethoxy-[2-(oxiran-2-ylmethoxy)ethyl]silane Chemical compound CO[Si](OC)(OC)CCOCC1CO1 ZNXDCSVNCSSUNB-UHFFFAOYSA-N 0.000 description 1
- HTVULPNMIHOVRU-UHFFFAOYSA-N trimethoxy-[2-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CC(C)OCC1CO1 HTVULPNMIHOVRU-UHFFFAOYSA-N 0.000 description 1
- DBUFXGVMAMMWSD-UHFFFAOYSA-N trimethoxy-[3-(7-oxabicyclo[4.1.0]heptan-4-yl)propyl]silane Chemical compound C1C(CCC[Si](OC)(OC)OC)CCC2OC21 DBUFXGVMAMMWSD-UHFFFAOYSA-N 0.000 description 1
- ZQPNGHDNBNMPON-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CO[Si](OC)(OC)CCC(C)OCC1CO1 ZQPNGHDNBNMPON-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- GUKYSRVOOIKHHB-UHFFFAOYSA-N trimethoxy-[4-(oxiran-2-ylmethoxy)butyl]silane Chemical compound CO[Si](OC)(OC)CCCCOCC1CO1 GUKYSRVOOIKHHB-UHFFFAOYSA-N 0.000 description 1
- IJQHYEFNLXHUGV-UHFFFAOYSA-N trimethoxysilylmethyl acetate Chemical compound CO[Si](OC)(OC)COC(C)=O IJQHYEFNLXHUGV-UHFFFAOYSA-N 0.000 description 1
- HADKRTWCOYPCPH-UHFFFAOYSA-M trimethylphenylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C1=CC=CC=C1 HADKRTWCOYPCPH-UHFFFAOYSA-M 0.000 description 1
- XMUJIPOFTAHSOK-UHFFFAOYSA-N undecan-2-ol Chemical compound CCCCCCCCCC(C)O XMUJIPOFTAHSOK-UHFFFAOYSA-N 0.000 description 1
- 239000005050 vinyl trichlorosilane Substances 0.000 description 1
Classifications
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- 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
- G03F7/075—Silicon-containing compounds
- G03F7/0752—Silicon-containing compounds in non photosensitive layers or as additives, e.g. for dry lithography
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- G—PHYSICS
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- 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
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/11—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having cover layers or intermediate layers, e.g. subbing layers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/02—Polysilicates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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- 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
- G03F7/075—Silicon-containing compounds
- G03F7/0757—Macromolecular compounds containing Si-O, Si-C or Si-N bonds
-
- 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
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/091—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers characterised by antireflection means or light filtering or absorbing means, e.g. anti-halation, contrast enhancement
-
- 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
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
- G03F7/2004—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image characterised by the use of a particular light source, e.g. fluorescent lamps or deep UV light
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- G—PHYSICS
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- 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
- G03F7/38—Treatment before imagewise removal, e.g. prebaking
-
- 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
- G03F7/40—Treatment after imagewise removal, e.g. baking
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
Definitions
- the present invention relates to a resist underlayer film forming composition for lithography for forming an underlayer film used as a lower layer of a photoresist in a lithography process for manufacturing a semiconductor device.
- a film known as a hard mask containing a metal element such as silicon or titanium is used as a lower layer film between a semiconductor substrate and a photoresist (see Patent Document 1 and Patent Document 2).
- a film known as a hard mask containing a metal element such as silicon or titanium is used as a lower layer film between a semiconductor substrate and a photoresist (see Patent Document 1 and Patent Document 2).
- the rate of removal by dry etching largely depends on the type of gas used for dry etching. Then, by appropriately selecting the gas type, it is possible to remove the hard mask by dry etching without greatly reducing the thickness of the photoresist.
- a resist underlayer film has been arranged between a semiconductor substrate and a photoresist in order to achieve various effects including an antireflection effect. .
- underlayers must be removed after processing the substrate. Further, when a problem occurs in the lower layer film formed on the substrate, the lower layer film may be removed and reworked. For this reason, the lower layer film has been removed by dry etching with a fluorine-based gas or wet etching with hydrofluoric acid or buffered hydrofluoric acid. However, this removal method causes great damage to the substrate.
- An object of the present invention is to provide a resist underlayer film forming composition for lithography for forming a resist underlayer film that can be used as a hard mask.
- the removal of the resist underlayer film is not only a conventional dry etching method using a fluorine-based gas or a wet etching method using hydrofluoric acid or buffered hydrofluoric acid, but also sulfuric acid / peroxidation with less damage to the substrate.
- An object of the present invention is to provide a resist underlayer film forming composition for forming a resist underlayer film that can be removed by a wet etching method using a chemical solution such as hydrogen.
- the present invention includes a component (A) and a component (B).
- the component (A) includes a hydrolyzable silane, a hydrolyzate thereof, or a hydrolyzate condensate thereof, and the hydrolyzable silane.
- R 1 is Formula (2): (In the formula (2), R 4 represents an alkylene group, a cyclic alkylene group, an alkenylene group, an arylene group, a sulfur atom, an oxygen atom, an oxycarbonyl group, an amide group, a secondary amino group, or a combination thereof; 5 is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 40 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkoxyalkyl group, a sulfur atom, a carbonyl group, an acyl group, or these R 6 represents an alkyl group having 1 to 10 carbon atoms, n1 represents 1 ⁇ n1 ⁇ 5, n2 represents 0 ⁇ n2 ⁇ 4, and the k1 portion represents a bond with a silicon atom.) And is bonded to a silicon atom through a Si—C bond.
- R 2 is an alkyl group, an aryl group, a halogenated alkyl group, a halogenated aryl group, an alkoxyaryl group, an alkenyl group, or an organic group having an epoxy group, an acryloyl group, a methacryloyl group, a mercapto group, an amino group, or a cyano group, Alternatively, a combination thereof is shown and the silicon atom is bonded to the silicon atom by a Si—C bond.
- R 3 represents an alkoxy group, an acyloxy group, or a halogen group.
- a represents an integer of 1
- b represents an integer of 0 to 2
- a + b represents an integer of 1 to 3.
- a hydrolyzable silane represented by The component (B) is a crosslinkable compound containing a ring structure having an alkoxymethyl group or a hydroxymethyl group, or a crosslinkable compound having an epoxy group or a blocked isocyanate group, and a resist underlayer film forming composition for lithography,
- the hydrolyzable silane is a combination of a hydrolyzable silane represented by the formula (1) and another hydrolyzable silane
- the other hydrolyzable silane is represented by the formula (3):
- R 7 is an alkyl group, aryl group, halogenated alkyl group, halogenated aryl group, alkenyl group, acyloxyalkyl group, or urea group, epoxy group, acryloyl group, methacryloyl group, mercapto group, or An organic group having a cyano group, or a combination thereof, and bonded to a silicon atom by a Si—C bond
- R 7 is an alkyl group
- a hydrolyzable silane comprising a combination of a hydrolyzable silane represented by the formula (1) described in the first viewpoint and a hydrolyzable silane represented by the formula (3) described in the second viewpoint.
- a resist underlayer film forming composition comprising a hydrolysis condensate as an underlayer film forming polymer;
- the component (C) includes a hydrolyzable silane, a hydrolyzate thereof, or a hydrolysis condensate thereof, wherein the hydrolyzable silane is represented by the formula (5), and the hydrolyzate represented by the formula (5).
- a combination of a degradable silane and a hydrolyzable silane represented by formula (3), a hydrolyzable silane represented by formula (5), a hydrolyzable silane represented by formula (3), and a formula (4) The composition for forming a resist underlayer film according to any one of the first to third aspects, which is a combination with a hydrolyzable silane, (In the formula (5), R 11 represents an organic group having an acyloxy group, a sulfonamide group, or a t-butyl ester group, and is bonded to a silicon atom by a Si—C bond.
- R 12 is an alkyl group.
- R 13 represents an alkoxy group, an acyloxy group, or a halogen group, a represents an integer of 1, and b represents an integer of 0 to 2.
- a + b represents an integer of 1 to 3.
- the resist underlayer film forming composition according to any one of the first to fourth aspects in which the alkoxymethyl group of the component (B) is a methoxymethyl group
- the resist underlayer film forming composition according to any one of the first to fifth aspects further containing an acid
- formation of a resist underlayer film including a step of applying the resist underlayer film forming composition according to any one of the first aspect to the sixth aspect onto a semiconductor substrate and baking to form an underlayer film Method
- a step of applying the resist underlayer film forming composition according to any one of the first aspect to the sixth aspect on a semiconductor substrate and baking to form a resist underlayer film A step of forming a resist film by applying a resist composition, a step of exposing the resist film, a step of developing the resist after exposure to obtain a resist pattern, a step of etching the resist underlayer film with the resist pattern, and a patterning
- the resist underlayer film forming composition for lithography of the present invention can be used for the production of a semiconductor device.
- the resist underlayer film forming composition for lithography for forming the resist underlayer film of the present invention can be used as a hard mask, and further can be used as an antireflection film depending on the wavelength of exposure light to be used.
- the resist underlayer film is not only a conventional dry etching method using a fluorine-based gas, or a wet etching method using hydrofluoric acid or buffered hydrofluoric acid, but also sulfuric acid / peroxidation with less damage to the substrate. It can be removed by a wet etching method using a chemical such as hydrogen.
- This invention contains (A) component and (B) component, (A) component contains hydrolysable silane, its hydrolyzate, or its hydrolysis condensate, and this hydrolysable silane is a formula (1).
- the component (B) is a crosslinkable compound having a ring structure having an alkoxymethyl group or a hydroxymethyl group, or a crosslinkable compound having an epoxy group or a blocked isocyanate group.
- the resist underlayer film forming composition of the present invention contains a hydrolyzable silane represented by the formula (1), a hydrolyzate thereof, or a hydrolyzed condensate thereof, and a solvent.
- a hydrolyzable silane represented by the formula (1) a hydrolyzate thereof, or a hydrolyzed condensate thereof, and a solvent.
- acid, water, alcohol, curing catalyst, acid generator, other organic polymer, light-absorbing compound, surfactant and the like can be included.
- the solid content in the resist underlayer film forming composition of the present invention is, for example, 0.1 to 50% by mass, or 0.1 to 30% by mass, and 0.1 to 25% by mass.
- the solid content is obtained by removing the solvent component from all the components of the resist underlayer film forming composition.
- the proportion of the hydrolyzable silane, its hydrolyzate, and its hydrolysis condensate in the solid content is 20% by mass or more, for example, 50 to 100% by mass, 60 to 99% by mass, 70 to 99% by mass. It is.
- hydrolyzable silane, its hydrolyzate, and its hydrolysis condensate can also be used as a mixture thereof. It can be used as a condensate obtained by hydrolyzing a hydrolyzable silane and condensing the obtained hydrolyzate.
- a hydrolysis-condensation product a partial hydrolysis product or a silane compound in which hydrolysis is not completely completed are mixed with the hydrolysis-condensation product, and the mixture can also be used.
- This condensate is a polymer having a polysiloxane structure.
- This polysiloxane includes a hydrolyzable silane represented by the formula (1), or a hydrolyzable silane represented by the formula (1) and another hydrolyzable silane (for example, a hydrolyzable silane represented by the formula (3)).
- a hydrolyzable silane represented by the formula (3) includes hydrolysis condensate.
- the product hydrolyzed condensate comprises a hydrolyzable silane represented by formula (1), or a hydrolyzable silane represented by formula (1) and a hydrolyzable silane represented by formula (3).
- Hydrolyzable silane can be added.
- R 1 represents an organic group represented by the formula (2) and is bonded to a silicon atom by a Si—C bond.
- R 2 is an alkyl group, an aryl group, a halogenated alkyl group, a halogenated aryl group, an alkoxyaryl group, an alkenyl group, or an organic group having an epoxy group, an acryloyl group, a methacryloyl group, a mercapto group, an amino group, or a cyano group, Alternatively, a combination thereof is shown and the silicon atom is bonded to the silicon atom by a Si—C bond.
- R 3 represents an alkoxy group, an acyloxy group, or a halogen group.
- a represents an integer of 1
- b represents an integer of 0 to 2
- a + b represents an integer of 1 to 3.
- R 4 represents an alkylene group, a cyclic alkylene group, an alkenylene group, an arylene group, a sulfur atom, an oxygen atom, an oxycarbonyl group, an amide group, a secondary amino group, or a combination thereof
- R 5 Is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 40 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an alkoxyalkyl group, a sulfur atom, a carbonyl group, an acyl group, or these shows a combination
- R 6 represents an alkyl group having 1 to 10 carbon atoms
- n1 is 1 ⁇ n1 ⁇ 5
- n2 represents an 0 ⁇ n2 ⁇ 4.
- the k1 portion represents a bond with a silicon atom.
- alkyl group examples include linear or branched alkyl groups having 1 to 10 carbon atoms, such as methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, i-butyl group.
- a cyclic alkyl group can also be used.
- a cyclic alkyl group having 1 to 10 carbon atoms a cyclopropyl group, a cyclobutyl group, a 1-methyl-cyclopropyl group, a 2-methyl-cyclopropyl group, a cyclopentyl group, 1-methyl-cyclobutyl group, 2-methyl-cyclobutyl group, 3-methyl-cyclobutyl group, 1,2-dimethyl-cyclopropyl group, 2,3-dimethyl-cyclopropyl group, 1-ethyl-cyclopropyl group, 2 -Ethyl-cyclopropyl group, cyclohexyl group, 1-methyl-cyclopentyl group, 2-methyl-cyclopentyl group, 3-methyl-cyclopentyl group, 1-ethyl-cyclobutyl group, 2-ethyl-cyclobutyl group, 3-ethyl-cyclobutyl Group, 1,2-d
- alkylene group examples include an alkylene group derived from the alkyl group.
- a methyl group includes a methylene group
- an ethyl group includes an ethylene group
- a propyl group includes a propylene group.
- alkenyl group examples include alkenyl groups having 2 to 10 carbon atoms, such as ethenyl group, 1-propenyl group, 2-propenyl group, 1-methyl-1-ethenyl group, 1-butenyl group and 2-butenyl group.
- alkenylene group examples include alkenylene groups derived from the alkenyl group.
- aryl group examples include aryl groups having 6 to 40 carbon atoms, such as a phenyl group, o-methylphenyl group, m-methylphenyl group, p-methylphenyl group, o-chlorophenyl group, m-chlorophenyl.
- the arylene group includes an arylene group derived from the aryl group.
- organic groups substituted with halogen atoms such as fluorine, chlorine, bromine, or iodine can be used.
- a sulfide bond can be formed by using a sulfur atom.
- An ether bond can be formed by using an oxygen atom.
- An ester bond can be formed by using an oxycarbonyl group.
- An amide bond can be formed by using an amide group.
- An amino group can be formed by using a secondary amino group.
- organic group having an epoxy group examples include glycidoxymethyl, glycidoxyethyl, glycidoxypropyl, glycidoxybutyl, and epoxycyclohexyl.
- Examples of the organic group having an acryloyl group include acryloylmethyl, acryloylethyl, acryloylpropyl, and the like.
- Examples of the organic group having a methacryloyl group include methacryloylmethyl, methacryloylethyl, and methacryloylpropyl.
- Examples of the organic group having a mercapto group include ethyl mercapto, butyl mercapto, hexyl mercapto, octyl mercapto and the like.
- organic group having an amino group examples include aminomethyl, aminoethyl, aminopropyl, and the like.
- Examples of the organic group having a cyano group include cyanoethyl and cyanopropyl.
- the alkoxyalkyl group is an alkyl group substituted with an alkoxy group, and examples thereof include a methoxymethyl group, an ethoxymethyl group, an ethoxyethyl group, and an ethoxymethyl group.
- alkoxy group examples include an alkoxy group having a linear, branched, or cyclic alkyl portion having 1 to 20 carbon atoms, such as a methoxy group, an ethoxy group, an n-propoxy group, an i-propoxy group, and an n-butoxy group.
- acyloxy group examples include acyloxy groups having 2 to 20 carbon atoms, such as a methylcarbonyloxy group, an ethylcarbonyloxy group, an n-propylcarbonyloxy group, an i-propylcarbonyloxy group, an n-butylcarbonyloxy group, i-butylcarbonyloxy group, s-butylcarbonyloxy group, t-butylcarbonyloxy group, n-pentylcarbonyloxy group, 1-methyl-n-butylcarbonyloxy group, 2-methyl-n-butylcarbonyloxy group, 3-methyl-n-butylcarbonyloxy group, 1,1-dimethyl-n-propylcarbonyloxy group, 1,2-dimethyl-n-propylcarbonyloxy group, 2,2-dimethyl-n-propylcarbonyloxy group, 1-ethyl-n-propylcarbonyloxy group, n-hex Silcarbonyl
- halogen group examples include fluorine, chlorine, bromine and iodine. These examples also apply to the halogen group portion of the halogenated alkyl group and the halogenated aryl group.
- hydrolyzable silane represented by the above formula (1) is exemplified below.
- T is an alkyl group, and examples of the above-described alkyl group can be given.
- the hydrolyzable silane can be used in combination with a hydrolyzable silane represented by the formula (1) and another hydrolyzable silane, and the other hydrolyzable silane is represented by the formula (3).
- At least one hydrolyzable silane selected from the group consisting of a hydrolyzable silane and a hydrolyzable silane represented by the formula (4) can be used.
- R 7 is an alkyl group, aryl group, halogenated alkyl group, halogenated aryl group, alkenyl group, acyloxyalkyl group, or urea group, epoxy group, acryloyl group, methacryloyl group, mercapto group, or cyano.
- An organic group having a group, or a combination thereof, and bonded to a silicon atom by a Si—C bond R 8 represents an alkoxy group, an acyloxy group, or a halogen group, and c represents 0 to 3 Indicates an integer.
- R 9 represents an alkyl group and is bonded to a silicon atom by a Si—C bond
- R 10 represents an alkoxy group, an acyloxy group, or a halogen group
- Y represents an alkylene group or Represents an arylene group
- d represents an integer of 0 or 1
- e represents an integer of 0 or 1.
- It has an alkyl group, aryl group, halogenated alkyl group, halogenated aryl group, alkenyl group, epoxy group, acryloyl group, methacryloyl group, mercapto group, or cyano group defined in the above formulas (3) and (4).
- Examples of the organic group, alkoxy group, acyloxy group, and halogen group can include the above-mentioned examples.
- acyloxyalkyl group a combination of the above-described acyloxy group and alkyl group can be exemplified, and examples thereof include an acetoxymethyl group, an acetoxyethyl group, an acetoxypropyl group, and the like.
- hydrolyzable silane represented by the formula (3) examples include tetramethoxysilane, tetrachlorosilane, tetraacetoxysilane, tetraethoxysilane, tetra n-propoxysilane, tetraisopropoxysilane, tetra n-butoxysilane, methyltrisilane.
- hydrolyzable silane represented by the formula (4) examples include methylene bistrimethoxysilane, methylene bistrichlorosilane, methylene bistriacetoxy silane, ethylene bistriethoxysilane, ethylene bistrichlorosilane, ethylene bistriacetoxy silane, propylene bistriethoxysilane, and butylene bistris.
- hydrolysable silane shown by Formula (3) the following hydrolyzable silanes can also be illustrated.
- T is an alkyl group, and examples of the above-described alkyl group can be given.
- a methyl group and an ethyl group are preferable.
- R is exemplified below.
- the component (A) used in the present invention is exemplified below.
- this invention contains the said (A) component, the said (B) component, and also the following (C) component,
- the component (C) includes a hydrolyzable silane, a hydrolyzate thereof, or a hydrolysis condensate thereof, wherein the hydrolyzable silane is represented by the formula (5), and the hydrolyzate represented by the formula (5).
- Combination of degradable silane and hydrolyzable silane represented by formula (3), or hydrolyzable silane represented by formula (5), hydrolyzable silane represented by formula (3) and formula (4) A composition for forming a resist underlayer film, which is a combination with a hydrolyzable silane.
- R 11 represents an organic group having an acyloxy group, a sulfonamide group, or a t-butyl ester group, and is bonded to a silicon atom by a Si—C bond.
- R 12 is an alkyl group, an aryl group, a halogenated alkyl group, a halogenated aryl group, an alkoxyaryl group, an alkenyl group, or an epoxy group, an acryloyl group, a methacryloyl group, a mercapto group, an amino group, or an organic group having a cyano group, Alternatively, a combination thereof is shown and the silicon atom is bonded to the silicon atom by a Si—C bond.
- R 13 represents an alkoxy group, an acyloxy group, or a halogen group.
- a represents an integer of 1
- b represents an integer of 0 to 2
- a + b represents an integer of 1 to 3.
- organic group having a group, an alkoxy group, an acyloxy group, and a halogen group can include the above-described examples.
- the organic group having an acyloxy group, a sulfonamido group, or a t-butyl ester group is an alkyl group or a phenyl group.
- the above hydrolyzable silane hydrolysis condensate (polyorganosiloxane) can give a condensate having a weight average molecular weight of 1,000 to 1,000,000, or 1,000 to 100,000. These molecular weights are molecular weights obtained in terms of polystyrene by GPC analysis.
- GPC measurement conditions are, for example, GPC apparatus (trade name HLC-8220 GPC, manufactured by Tosoh Corporation), GPC column (trade names Shodex KF803L, KF802, KF801, Showa Denko Co., Ltd.), column temperature is 40 ° C., eluent (Elution solvent) can be performed using tetrahydrofuran, the flow rate (flow rate) is 1.0 mL / min, and the standard sample is polystyrene (manufactured by Showa Denko KK).
- hydrolysis of the alkoxysilyl group, acyloxysilyl group, or halogenated silyl group 0.5 to 100 mol, preferably 1 to 10 mol of water is used per mol of the hydrolyzable group. Further, 0.001 to 10 mol, preferably 0.001 to 1 mol of hydrolysis catalyst can be used per mol of the hydrolyzable group.
- the reaction temperature during the hydrolysis and condensation is usually 20 to 80 ° C.
- Hydrolysis may be complete hydrolysis or partial hydrolysis. That is, a hydrolyzate or a monomer may remain in the hydrolysis condensate.
- a catalyst can be used in the hydrolysis and condensation.
- the hydrolysis catalyst include metal chelate compounds, organic acids, inorganic acids, organic bases, and inorganic bases.
- Examples of the metal chelate compound as the hydrolysis catalyst include triethoxy mono (acetylacetonato) titanium, tri-n-propoxy mono (acetylacetonato) titanium, tri-i-propoxy mono (acetylacetonato) titanium, tri -N-Butoxy mono (acetylacetonato) titanium, tri-sec-butoxy mono (acetylacetonato) titanium, tri-t-butoxy mono (acetylacetonato) titanium, diethoxy bis (acetylacetonato) titanium , Di-n-propoxy bis (acetylacetonato) titanium, di-i-propoxy bis (acetylacetonato) titanium, di-n-butoxy bis (acetylacetonato) titanium, di-sec-butoxy bis (Acetylacetonate) titanium, di-t Butoxy bis (acetylacetonato) titanium, monoethoxy tris (acetylacetonato) titanium
- Organic acids as hydrolysis catalysts are, for example, acetic acid, propionic acid, butanoic acid, pentanoic acid, hexanoic acid, heptanoic acid, octanoic acid, nonanoic acid, decanoic acid, oxalic acid, maleic acid, methylmalonic acid, adipic acid, sebacin Acid, gallic acid, butyric acid, merit acid, arachidonic acid, 2-ethylhexanoic acid, oleic acid, stearic acid, linoleic acid, linolenic acid, salicylic acid, benzoic acid, p-aminobenzoic acid, p-toluenesulfonic acid, benzenesulfone Examples include acid, monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, trifluoroacetic acid, formic acid, malonic acid, sulfonic acid, phthal
- Examples of the inorganic acid as the hydrolysis catalyst include hydrochloric acid, nitric acid, sulfuric acid, hydrofluoric acid, phosphoric acid and the like.
- Organic bases as hydrolysis catalysts include, for example, pyridine, pyrrole, piperazine, pyrrolidine, piperidine, picoline, trimethylamine, triethylamine, monoethanolamine, diethanolamine, dimethylmonoethanolamine, monomethyldiethanolamine, triethanolamine, diazabicyclooctane, diazine.
- Examples of the inorganic base as the hydrolysis catalyst include ammonia, sodium hydroxide, potassium hydroxide, barium hydroxide, calcium hydroxide and the like. Of these catalysts, organic bases and inorganic bases are preferred, and these may be used alone or in combination of two or more.
- organic solvent used in the hydrolysis examples include n-pentane, i-pentane, n-hexane, i-hexane, n-heptane, i-heptane, 2,2,4-trimethylpentane, n-octane, i- Aliphatic hydrocarbon solvents such as octane, cyclohexane and methylcyclohexane; benzene, toluene, xylene, ethylbenzene, trimethylbenzene, methylethylbenzene, n-propyl benzene, i-propyl benzene, diethylbenzene, i-butylbenzene, triethylbenzene, di -Aromatic hydrocarbon solvents such as i-propyl benzene, n-amyl naphthalene, trimethylbenzene; methanol, ethanol, ethanol
- acetone methyl ethyl ketone, methyl-n-propyl ketone, methyl-n-butyl ketone, diethyl ketone, methyl-i-butyl ketone, methyl-n-pentyl ketone, ethyl-n-butyl ketone, methyl-n-hexyl ketone, di- Ketone solvents such as i-butyl ketone, trimethylnonanone, cyclohexanone, methylcyclohexanone, 2,4-pentanedione, acetonylacetone, diacetone alcohol, acetophenone, and fenchon are preferred from the viewpoint of storage stability of the solution.
- the component (B) used in the present invention is a crosslinkable compound having a ring structure having an alkoxymethyl group or a hydroxymethyl group, or a crosslinkable compound having an epoxy group or a blocked isocyanate group.
- a crosslinkable compound having a ring structure having an alkoxymethyl group or a hydroxymethyl group or a crosslinkable compound having an epoxy group or a blocked isocyanate group.
- the alkoxymethyl group a methoxymethyl group can be preferably used.
- the crosslinkable compound examples include melamine type, substituted urea type, and polymer type thereof.
- it is a cross-linking agent having at least two cross-linking substituents, such as methoxymethylated glycoluril, butoxymethylated glycoluril, methoxymethylated melamine, butoxymethylated melamine, methoxymethylated benzoguanamine, butoxymethylated benzogwanamine, methoxy Compounds such as methylated urea, butoxymethylated urea, methoxymethylated thiourea, or methoxymethylated thiourea.
- the condensate of these compounds can also be used.
- crosslinking agent a crosslinking agent having high heat resistance
- a compound containing a crosslinking-forming substituent having an aromatic ring (for example, a benzene ring or a naphthalene ring) in the molecule can be preferably used.
- Examples of the compound include a compound having a partial structure represented by the following formula (6), and a polymer or oligomer having a repeating unit represented by the following formula (7).
- R 17 and R 18 each represent a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 20 carbon atoms
- n7 represents an integer of 1 to 4
- n8 Represents an integer of 1 to (5-n7)
- n7 + n8 represents an integer of 2 to 5.
- R 19 represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms
- R 20 represents an alkyl group having 1 to 10 carbon atoms
- n9 represents an integer of 1 to 4
- n9 + n10 represents an integer of 1 to 4.
- Oligomers and polymers can be used in the range of 2 to 100 or 2 to 50 repeating unit structures.
- the above compounds can be obtained as products of Asahi Organic Materials Industry Co., Ltd. and Honshu Chemical Industry Co., Ltd.
- the compound represented by the formula (6-21) can be obtained as Asahi Organic Materials Co., Ltd., trade name TM-BIP-A.
- the amount of the crosslinkable compound (B) added varies depending on the coating solvent used, the base substrate used, the required solution viscosity, the required film shape, etc., but is 0.001 to the total solid content. 80% by mass, preferably 0.01 to 50% by mass, more preferably 0.05 to 40% by mass.
- These cross-linking agents may cause a cross-linking reaction by self-condensation, but when a cross-linkable substituent is present in the above-mentioned polymer of the present invention, it can cause a cross-linking reaction with those cross-linkable substituents.
- the resist underlayer film forming composition used in the present invention may contain an acidic compound for promoting the heating reaction.
- the acidic compounds are camphorsulfonic acid, citric acid, p-toluenesulfonic acid, pyridinium-p-toluenesulfonic acid, trifluoromethanesulfonic acid, salicylic acid, sulfosalicylic acid, pyridinium-sulfosalicylic acid, 4-chlorobenzenesulfonic acid, pyridinium-4- Chlorobenzenesulfonic acid, 4-hydroxybenzenesulfonic acid, pyridinium-4-hydroxybenzenesulfonic acid, benzenedisulfonic acid, pyridinium-benzenedisulfonic acid, benzoic acid, hydroxybenzoic acid, 1-naphthalenesulfonic acid, and pyridinium-1-naphthalenesulfone An acid etc.
- crosslinking catalysts can be used alone or in combination of two or more.
- the crosslinking catalyst is 0.01 to 10 parts by mass, or 0.05 to 5 parts by mass, or 0.1 to 3 parts by mass, or 0.3 to 2 parts by mass with respect to 100 parts by mass of the condensate (polyorganosiloxane). Part, or 0.5 to 1 part by mass.
- the resist underlayer film forming composition used in the present invention may contain an organic polymer compound.
- an organic polymer compound By adding an organic polymer compound, the dry etching rate (thickness reduction per unit time), attenuation coefficient, refractive index, etc. of the resist underlayer film formed from the underlayer film forming composition for lithography of the present invention are adjusted. can do.
- the organic polymer compound is not particularly limited, and various organic polymers can be used. Polycondensation polymers and addition polymerization polymers can be used. Addition polymerization polymers and condensation polymerization polymers such as polyester, polystyrene, polyimide, acrylic polymer, methacrylic polymer, polyvinyl ether, phenol novolak, naphthol novolak, polyether, polyamide, and polycarbonate can be used.
- An organic polymer having an aromatic ring structure such as a benzene ring, a naphthalene ring, an anthracene ring, a triazine ring, a quinoline ring, and a quinoxaline ring that functions as a light absorption site is preferably used.
- organic polymer compounds include addition polymerizable monomers such as benzyl acrylate, benzyl methacrylate, phenyl acrylate, naphthyl acrylate, anthryl methacrylate, anthryl methyl methacrylate, styrene, hydroxystyrene, benzyl vinyl ether, and N-phenylmaleimide.
- addition polymerization polymers contained as structural units and polycondensation polymers such as phenol novolac and naphthol novolak.
- the polymer compound When an addition polymerization polymer is used as the organic polymer compound, the polymer compound may be a homopolymer or a copolymer.
- An addition polymerizable monomer is used for the production of the addition polymerization polymer.
- examples of such addition polymerizable monomers include acrylic acid, methacrylic acid, acrylic ester compounds, methacrylic ester compounds, acrylamide compounds, methacrylamide compounds, vinyl compounds, styrene compounds, maleimide compounds, maleic anhydride, acrylonitrile and the like. It is done.
- acrylic ester compounds include methyl acrylate, ethyl acrylate, normal hexyl acrylate, isopropyl acrylate, cyclohexyl acrylate, benzyl acrylate, phenyl acrylate, anthryl methyl acrylate, 2-hydroxyethyl acrylate, 3-chloro-2-hydroxypropyl acrylate, 2-hydroxypropyl acrylate, 2,2,2-trifluoroethyl acrylate, 2,2,2-trichloroethyl acrylate, 2-bromoethyl acrylate, 4-hydroxybutyl acrylate, 2-methoxyethyl acrylate, tetrahydrofurfuryl acrylate, 2-Methyl-2-adamantyl acrylate, 5-acryloyloxy-6-hydroxynorbornene-2 Carboxylic-6-lactone, 3-acryloxypropyl triethoxysilane, and glycidyl acrylate.
- Methacrylic acid ester compounds include methyl methacrylate, ethyl methacrylate, normal hexyl methacrylate, isopropyl methacrylate, cyclohexyl methacrylate, benzyl methacrylate, phenyl methacrylate, anthryl methyl methacrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, 2,2, 2-trifluoroethyl methacrylate, 2,2,2-trichloroethyl methacrylate, 2-bromoethyl methacrylate, 4-hydroxybutyl methacrylate, 2-methoxyethyl methacrylate, tetrahydrofurfuryl methacrylate, 2-methyl-2-adamantyl methacrylate, 5 -Methacryloyloxy-6-hydroxynorbornene-2-carbox Rick 6- lactone, 3-methacryloxypropyl triethoxysilane, glycidyl
- acrylamide compound examples include acrylamide, N-methylacrylamide, N-ethylacrylamide, N-benzylacrylamide, N-phenylacrylamide, N, N-dimethylacrylamide and N-anthrylacrylamide.
- methacrylamide compound examples include methacrylamide, N-methyl methacrylamide, N-ethyl methacrylamide, N-benzyl methacrylamide, N-phenyl methacrylamide, N, N-dimethyl methacrylamide and N-anthryl acrylamide. .
- vinyl compounds include vinyl alcohol, 2-hydroxyethyl vinyl ether, methyl vinyl ether, ethyl vinyl ether, benzyl vinyl ether, vinyl acetic acid, vinyl trimethoxysilane, 2-chloroethyl vinyl ether, 2-methoxyethyl vinyl ether, vinyl naphthalene, and vinyl anthracene. Can be mentioned.
- styrene compound examples include styrene, hydroxystyrene, chlorostyrene, bromostyrene, methoxystyrene, cyanostyrene, and acetylstyrene.
- maleimide compounds include maleimide, N-methylmaleimide, N-phenylmaleimide, N-cyclohexylmaleimide, N-benzylmaleimide and N-hydroxyethylmaleimide.
- examples of such a polymer include a polycondensation polymer of a glycol compound and a dicarboxylic acid compound.
- examples of the glycol compound include diethylene glycol, hexamethylene glycol, butylene glycol and the like.
- examples of the dicarboxylic acid compound include succinic acid, adipic acid, terephthalic acid, maleic anhydride and the like.
- examples thereof include polyesters such as polypyromellitimide, poly (p-phenylene terephthalamide), polybutylene terephthalate, polyethylene terephthalate, polyamide, and polyimide.
- the organic polymer compound contains a hydroxyl group
- the hydroxyl group can form a crosslinking reaction with the polyorganosiloxane.
- organic polymer compound a polymer compound having a weight average molecular weight of, for example, 1,000 to 1,000,000, or 3,000 to 300,000, or 5,000 to 200,000, or 10,000 to 100,000 can be used.
- the proportion thereof is 1 to 200 parts by mass, or 5 to 100 parts by mass, or 10 to 50 parts by mass, or 20 with respect to 100 parts by mass of the condensate (polyorganosiloxane). To 30 parts by mass.
- the resist underlayer film forming composition of the present invention may contain an acid generator.
- the acid generator include a thermal acid generator and a photoacid generator.
- the photoacid generator generates an acid when the resist is exposed. Therefore, the acidity of the lower layer film can be adjusted. This is a method for matching the acidity of the lower layer film with the acidity of the upper layer resist. Further, the pattern shape of the resist formed in the upper layer can be adjusted by adjusting the acidity of the lower layer film.
- Examples of the photoacid generator contained in the resist underlayer film forming composition of the present invention include onium salt compounds, sulfonimide compounds, and disulfonyldiazomethane compounds.
- onium salt compounds include diphenyliodonium hexafluorophosphate, diphenyliodonium trifluoromethanesulfonate, diphenyliodonium nonafluoronormalbutanesulfonate, diphenyliodonium perfluoronormaloctanesulfonate, diphenyliodoniumcamphorsulfonate, bis (4-tert-butylphenyl) iodoniumcamphor.
- Iodonium salt compounds such as sulfonate and bis (4-tert-butylphenyl) iodonium trifluoromethanesulfonate, and triphenylsulfonium hexafluoroantimonate, triphenylsulfonium nonafluoronormal butanesulfonate, triphenylsulfonium camphorsulfonate, and triphenyls Sulfonium salt compounds such as phosphonium trifluoromethanesulfonate, and the like.
- sulfonimide compounds include N- (trifluoromethanesulfonyloxy) succinimide, N- (nonafluoronormalbutanesulfonyloxy) succinimide, N- (camphorsulfonyloxy) succinimide and N- (trifluoromethanesulfonyloxy) naphthalimide. Can be mentioned.
- disulfonyldiazomethane compound examples include bis (trifluoromethylsulfonyl) diazomethane, bis (cyclohexylsulfonyl) diazomethane, bis (phenylsulfonyl) diazomethane, bis (p-toluenesulfonyl) diazomethane, and bis (2,4-dimethylbenzenesulfonyl).
- examples include diazomethane and methylsulfonyl-p-toluenesulfonyldiazomethane.
- photoacid generator Only one type of photoacid generator can be used, or two or more types can be used in combination.
- the proportion thereof is 0.01 to 5 parts by mass, or 0.1 to 3 parts by mass, or 0.5 with respect to 100 parts by mass of the condensate (polyorganosiloxane). ⁇ 1 part by mass.
- the resist underlayer film forming composition of the present invention may contain a surfactant.
- the surfactant is effective for suppressing the occurrence of pinholes and installations when the resist underlayer film forming composition of the present invention is applied to a substrate.
- Examples of the surfactant contained in the resist underlayer film forming composition of the present invention include polyoxyethylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, polyoxyethylene cetyl ether, and polyoxyethylene oleyl ether.
- Polyoxyethylene alkyl allyl ethers such as polyoxyethylene octylphenol ether and polyoxyethylene nonylphenol ether, polyoxyethylene / polyoxypropylene block copolymers, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan mono Sorbitan fatty acid esters such as oleate, sorbitan trioleate, sorbitan tristearate, polyoxyethylene sorbita Nonionic surfactants such as polyoxyethylene sorbitan fatty acid esters such as monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan trioleate, polyoxyethylene sorbitan tristearate
- Product names EFTOP EF301, EF303, EF352 manufactured by Tochem Products Co., Ltd.
- surfactants may be used alone or in combination of two or more.
- the ratio is 0.0001 to 5 parts by mass, or 0.001 to 1 part by mass, or 0.01 to 0 with respect to 100 parts by mass of the condensate (polyorganosiloxane). .5 parts by mass.
- a rheology adjusting agent, an adhesion aid and the like can be added to the resist underlayer film forming composition of the present invention.
- the rheology modifier is effective for improving the fluidity of the underlayer film forming composition.
- the adhesion aid is effective for improving the adhesion between the semiconductor substrate or resist and the lower layer film.
- bisphenol S or a bisphenol S derivative can be added as an additive to the resist underlayer film forming composition of the present invention.
- Bisphenol S or a bisphenol S derivative is 0.01 to 20 parts by mass, 0.01 to 10 parts by mass, or 0.01 to 5 parts by mass with respect to 100 parts by mass of the polyorganosiloxane.
- Preferred bisphenol S or bisphenol S derivatives are exemplified below.
- any solvent can be used as long as it can dissolve the solid content.
- solvents include methyl cellosolve acetate, ethyl cellosolve acetate, propylene glycol, propylene glycol monomethyl ether, propylene glycol monoethyl ether, methyl isobutyl carbinol, propylene glycol monobutyl ether, propylene glycol monomethyl ether acetate, propylene glycol monoether.
- a resist underlayer film is formed on the substrate by a coating method, or a resist underlayer film is formed thereon by an organic underlayer film on the substrate, A resist film (for example, a photoresist or an electron beam resist) is formed on the resist underlayer film. Then, a resist pattern is formed by exposure and development, and the resist underlayer film is dry-etched using the resist pattern to transfer the pattern, and the substrate is processed or ion-implanted with the pattern, or the organic underlayer film is formed. Pattern transfer is performed by etching, and the substrate is processed and ions are implanted by the organic underlayer film. Furthermore, the method further includes a step of wet etching the resist underlayer film with a chemical solution such as a mixed aqueous solution of sulfuric acid and hydrogen peroxide or a mixed aqueous solution of ammonia and hydrogen peroxide.
- a chemical solution such as a mixed aqueous solution of sulfuric acid and hydrogen peroxide or a mixed aqueous solution of ammonia
- the resist film thickness tends to be thin to prevent pattern collapse.
- the resist underlayer film (containing an inorganic silicon compound) of the present invention is coated on the substrate with or without an organic underlayer film, and a resist film (organic resist) is formed thereon.
- the organic component film and the inorganic component film differ greatly in the dry etching rate depending on the selection of the etching gas.
- the organic component film has an oxygen-based gas and the dry etching rate increases.
- the inorganic component film has a halogen-containing gas. This increases the dry etching rate.
- a resist pattern is formed, and the resist underlayer film of the present invention existing under the resist pattern is dry-etched with a halogen-containing gas to transfer the pattern to the resist underlayer film, and the pattern transferred to the resist underlayer film contains halogen.
- Substrate processing is performed using gas.
- the organic underlayer film under the layer is dry-etched with an oxygen-based gas to transfer the pattern to the organic underlayer film, and the pattern-transferred organic underlayer film is halogen-containing. Substrate processing is performed using gas.
- the resist underlayer film of the present invention is not a crosslinked film by a condensation reaction of siloxane by a condensation reaction of silanol groups, but a hydrolyzable organosilane containing a silane compound, its hydrolyzate, or its hydrolysis condensate and a crosslinking agent. It is a crosslinked film made of This lower layer film has an appropriate reflectance with the resist, has dry etching resistance during substrate processing, etc., and has a sufficient function as a hard mask.
- substrates used in the manufacture of semiconductor devices eg, silicon wafer substrates, silicon / silicon dioxide coated substrates, silicon nitride substrates, glass substrates, ITO substrates, polyimide substrates, and low dielectric constant materials (low-k materials)
- the resist underlayer film-forming composition of the present invention is applied onto a coated substrate or the like by an appropriate coating method such as a spinner or a coater, and then baked to form a resist underlayer film.
- the conditions for firing are appropriately selected from firing temperatures of 80 ° C. to 250 ° C. and firing times of 0.3 to 60 minutes.
- the firing temperature is 150 ° C. to 250 ° C.
- the firing time is 0.5 to 2 minutes.
- the thickness of the lower layer film to be formed is, for example, 10 to 1000 nm, 20 to 500 nm, 30 to 300 nm, or 50 to 100 nm.
- a photoresist layer is formed on the resist underlayer film. Formation of the photoresist layer can be performed by a well-known method, that is, by applying a photoresist composition solution onto the lower layer film and baking.
- the film thickness of the photoresist is, for example, 50 to 10,000 nm, 100 to 2000 nm, or 200 to 1000 nm.
- the resist underlayer film of the present invention can be formed thereon, and a photoresist can be further coated thereon.
- the substrate can be processed by selecting an appropriate etching gas.
- an appropriate etching gas For example, it is possible to process the resist underlayer film of the present invention using a fluorine-based gas that has a sufficiently high etching rate for photoresist as an etching gas, and a sufficiently high etching rate for the resist underlayer film of the present invention.
- the organic underlayer film can be processed using an oxygen-based gas as an etching gas, and the substrate can be processed using a fluorine-based gas that provides a sufficiently high etching rate for the organic underlayer film as an etching gas.
- the photoresist formed on the resist underlayer film of the present invention is not particularly limited as long as it is sensitive to light used for exposure. Either a negative photoresist or a positive photoresist can be used.
- a positive photoresist comprising a novolac resin and 1,2-naphthoquinonediazide sulfonic acid ester, a chemically amplified photoresist comprising a binder having a group that decomposes with an acid to increase the alkali dissolution rate and a photoacid generator, an acid
- a chemically amplified photoresist comprising a low-molecular compound that decomposes to increase the alkali dissolution rate of the photoresist, an alkali-soluble binder, and a photoacid generator, and a binder having a group that decomposes with an acid to increase the alkali dissolution rate
- a chemically amplified photoresist composed of a low molecular weight compound that de
- Examples include trade name APEX-E manufactured by Shipley, trade name PAR710 manufactured by Sumitomo Chemical Co., Ltd., and trade name SEPR430 manufactured by Shin-Etsu Chemical Co., Ltd. Also, for example, Proc. SPIE, Vol. 3999, 330-334 (2000), Proc. SPIE, Vol. 3999, 357-364 (2000), Proc. SPIE, Vol. 3999, 365-374 (2000), and fluorine-containing polymer-based photoresists.
- post-exposure heating is performed as necessary.
- the post-exposure heating is performed under conditions appropriately selected from a heating temperature of 70 ° C. to 150 ° C. and a heating time of 0.3 to 10 minutes.
- a resist for electron beam lithography or a resist for EUV lithography can be used instead of a photoresist as a resist.
- the electron beam resist either a negative type or a positive type can be used.
- Chemically amplified resist comprising a binder having a group that decomposes with an acid generator and an acid to change the alkali dissolution rate, a low molecular weight compound that decomposes with an alkali-soluble binder, an acid generator and an acid to change the alkali dissolution rate of the resist
- a chemically amplified resist comprising: a binder having a group that decomposes with an acid generator and an acid to change the alkali dissolution rate; and a chemically amplified resist comprising a low-molecular compound that decomposes with an acid to change the alkali dissolution rate of the resist,
- non-chemically amplified resists composed of a binder having a group that changes the alkali dissolution rate by being
- a developer for example, an alkali developer.
- a developer for example, an alkali developer.
- Examples of the developer include aqueous solutions of alkali metal hydroxides such as potassium hydroxide and sodium hydroxide, aqueous solutions of quaternary ammonium hydroxides such as tetramethylammonium hydroxide, tetraethylammonium hydroxide, and choline, ethanolamine, and propylamine. And an alkaline aqueous solution such as an aqueous amine solution such as ethylenediamine. Further, a surfactant or the like can be added to these developers.
- the development conditions are appropriately selected from a temperature of 5 to 50 ° C. and a time of 10 to 600 seconds.
- an organic solvent can be used as a developer. After the exposure, development is performed with a developer (solvent). As a result, for example, when a positive photoresist is used, the unexposed portion of the photoresist is removed, and a photoresist pattern is formed.
- Examples of the developer include methyl acetate, butyl acetate, ethyl acetate, isopropyl acetate, amyl acetate, isoamyl acetate, ethyl methoxyacetate, ethyl ethoxy acetate, propylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monopropyl ether Acetate, ethylene glycol monobutyl ether acetate, ethylene glycol monophenyl ether acetate, diethylene glycol monomethyl ether acetate, diethylene glycol monopropyl ether acetate, diethylene glycol monoethyl ether acetate, diethylene glycol monophenyl ether acetate, diethylene glycol monobutyl ether acetate, diethylene glycol No ethyl ether acetate, 2-methoxybutyl acetate, 3-methoxybutyl acetate, 4-me
- the resist underlayer film (intermediate layer) of the present invention is removed using the photoresist (upper layer) pattern thus formed as a protective film, and then the patterned photoresist and the resist underlayer film of the present invention are removed.
- the organic underlayer film (lower layer) is removed using the film made of (intermediate layer) as a protective film.
- the semiconductor substrate is processed using the patterned resist underlayer film (intermediate layer) and organic underlayer film (lower layer) of the present invention as a protective film.
- the resist underlayer film (intermediate layer) of the present invention in a portion where the photoresist has been removed is removed by dry etching to expose the semiconductor substrate.
- dry etching of the resist underlayer film of the present invention tetrafluoromethane (CF 4 ), perfluorocyclobutane (C 4 F 8 ), perfluoropropane (C 3 F 8 ), trifluoromethane, carbon monoxide, argon, oxygen, Gases such as nitrogen, sulfur hexafluoride, difluoromethane, nitrogen trifluoride and chlorine trifluoride, chlorine, trichloroborane and dichloroborane can be used.
- a halogen-based gas for dry etching of the resist underlayer film.
- a photoresist made of an organic substance is basically difficult to remove.
- the resist underlayer film of the present invention containing a large amount of silicon atoms is quickly removed by the halogen-based gas. Therefore, it is possible to suppress a decrease in the thickness of the photoresist accompanying dry etching of the resist underlayer film. As a result, the photoresist can be used as a thin film.
- the dry etching of the resist underlayer film is preferably performed using a fluorine-based gas.
- fluorine-based gas examples include tetrafluoromethane (CF 4 ), perfluorocyclobutane (C 4 F 8 ), perfluoropropane (C 3 F 8 ), Examples thereof include trifluoromethane and difluoromethane (CH 2 F 2 ).
- the organic underlayer film is removed using the patterned photoresist and the film made of the resist underlayer film of the present invention as a protective film.
- the organic underlayer film (underlayer) is preferably formed by dry etching with an oxygen-based gas. This is because the resist underlayer film of the present invention containing a large amount of silicon atoms is difficult to remove by dry etching with an oxygen-based gas.
- the semiconductor substrate is processed.
- the processing of the semiconductor substrate is preferably performed by dry etching with a fluorine-based gas.
- the resist underlayer film is removed.
- dry etching or wet etching is often performed.
- dry etching of the resist underlayer film (intermediate layer) is preferably performed using a fluorine-based gas.
- the fluorine-based gas include tetrafluoromethane (CF 4 ), perfluorocyclobutane (C 4 F 8 ), perfluoropropane (C 3 F 8 ), trifluoromethane, and difluoromethane (CH 2 F 2 ). It is done.
- Examples of the chemical solution used in wet etching of the resist underlayer film (intermediate layer) include chemical solutions such as hydrofluoric acid, buffered hydrofluoric acid, sulfuric acid / hydrogen peroxide, and ammonia / hydrogen peroxide.
- an organic antireflection film can be formed on the resist underlayer film of the present invention before the formation of the photoresist.
- the antireflective coating composition used there is not particularly limited, and can be arbitrarily selected from those conventionally used in the lithography process, and can be used by a conventional method such as a spinner.
- the antireflection film can be formed by coating and baking with a coater.
- the substrate to which the resist underlayer film forming composition of the present invention is applied may have an organic or inorganic antireflection film formed on its surface by a CVD method or the like.
- An underlayer film can also be formed from the resist underlayer film forming composition of the invention.
- the resist underlayer film formed from the resist underlayer film forming composition of the present invention may also absorb light depending on the wavelength of light used in the lithography process. In such a case, it can function as an antireflection film having an effect of preventing reflected light from the substrate. Furthermore, the resist underlayer film formed from the resist underlayer film forming composition of the present invention is formed upon exposure to a layer for preventing the interaction between the substrate and the photoresist, the material used for the photoresist, or the photoresist.
- a layer having a function of preventing adverse effects of a substance on a substrate a layer having a function of preventing diffusion of a substance generated from a substrate upon heating and baking to an upper photoresist, and a poisoning effect of a photoresist layer by a semiconductor substrate dielectric layer It is also possible to use it as a barrier layer or the like for reducing.
- the resist underlayer film formed from the resist underlayer film forming composition is applied to a substrate on which via holes used in the dual damascene process are formed, and can be used as a filling material that can fill the holes without any gaps. Moreover, it can also be used as a planarizing material for planarizing the surface of an uneven semiconductor substrate.
- the EUV resist underlayer film can be used for the following purposes in addition to the function as a hard mask. Without intermixing with the EUV resist, it is possible to prevent reflection of unwanted exposure light such as UV and DUV (ArF light, KrF light) from the substrate or interface during EUV exposure (wavelength 13.5 nm).
- the resist underlayer film forming composition can be used as a resist underlayer antireflection film. Reflection can be efficiently prevented in the lower layer of the EUV resist.
- the process can be performed in the same manner as the photoresist underlayer film.
- the toluene solution was transferred to a 500 mL four-necked flask equipped with a stirrer, a distillation tower, a cooler, and a thermometer, placed in an oil bath, and gradually heated to distill off the toluene. After the toluene was distilled off, the temperature was further raised and the mixture was aged at 200 ° C. for 2 hours.
- the mixture was transferred to a 300 mL four-necked flask equipped with a stirrer, a reflux condenser, a dropping funnel and a thermometer, and 210 g of acetonitrile, 78.24 g of sodium iodide (0.522 mol, 56.7 g of trimethylchlorosilane (0.522)
- the mixture was refluxed for 24 hours at 70 ° C.
- 69.0 g of water was added dropwise and the mixture was further refluxed for 6 hours at 70 ° C.
- the mixture was cooled to room temperature, and an aqueous sodium hydrogen sulfite solution was added to release it.
- the toluene solution was transferred to a 500 mL four-necked flask equipped with a stirrer, a distillation tower, a cooler, and a thermometer, placed in an oil bath, and gradually heated to distill off the toluene. After the toluene was distilled off, the temperature was further raised and the mixture was aged at 200 ° C. for 2 hours.
- the mixture was transferred to a 500 mL four-necked flask equipped with a stirrer, a reflux condenser, a dropping funnel and a thermometer, and 200 g of acetonitrile, 81.1 g of sodium iodide (0.541 mol, 58.8 g of trimethylchlorosilane (0.542)
- the reaction mixture was refluxed for 24 hours at 70 ° C. After refluxing, 67 g of water was added dropwise, and the mixture was further refluxed for 6 hours at 70 ° C. After cooling to room temperature, an aqueous sodium hydrogen sulfite solution was added, and the free iodine was removed.
- the oil layer was further washed twice with 15% brine and 120 g of propylene glycol monomethyl ether was added, and the mixture was concentrated at 40 ° C. under reduced pressure to obtain a 20% propylene glycol monomethyl ether solution of the hydrolysis condensate.
- the weight average molecular weight of the obtained polymer (corresponding to the formula (A-2)) by GPC is in terms of polystyrene. Was Mw4800.
- the toluene solution was transferred to a 500 mL four-necked flask equipped with a stirrer, a distillation tower, a cooler, and a thermometer, placed in an oil bath, and gradually heated to distill off the toluene. After the toluene was distilled off, the temperature was further raised and the mixture was aged at 200 ° C. for 2 hours.
- the mixture was transferred to a 300 mL four-necked flask equipped with a stirrer, a reflux condenser, a dropping funnel and a thermometer, and 200 g of acetonitrile, 81.1 g of sodium iodide (0.541 mol, 58.8 g of trimethylchlorosilane (0.542)
- the reaction mixture was refluxed for 24 hours at 70 ° C. After refluxing, 67 g of water was added dropwise, and the mixture was further refluxed for 6 hours at 70 ° C. After cooling to room temperature, an aqueous sodium hydrogen sulfite solution was added, and the free iodine was removed.
- the oil layer was further recovered by washing twice with 15% brine, 120 g of propylene glycol monomethyl ether was added, and the mixture was concentrated under reduced pressure at 40 ° C. to give a 20% propylene glycol monomethyl ether solution of the hydrolysis condensate.
- the weight average molecular weight of the obtained polymer (corresponding to the formula (A-2)) by GPC was determined to be polystyrene. It was Mw5300 in emissions terms.
- the mixed solution was added dropwise to the reaction solvent at room temperature. After the addition, the mixture was reacted for 240 minutes while maintaining at 40 ° C. in an oil bath, cooled to room temperature, and diluted with 90 mL of ethyl acetate. 0.2 mol% hydrochloric acid was added for neutralization, and the aqueous layer separated into two layers was removed. The remaining organic layer was further washed with 47 g of water three times.
- the weight average molecular weight of the obtained polymer (corresponding to the formula (A-4)) by GPC was Mw 1800 in terms of polystyrene.
- N-3- (trimethoxysilyl) -propyl- [1,1′-biphenyl] -2,2′-dicarboximide corresponds to the following compound (4-1-1), and the following reaction formula is determined by a conventional method. Can be synthesized.
- the mixed solution was added dropwise to the reaction solvent at room temperature. After the addition, the mixture was reacted for 240 minutes while maintaining at 40 ° C. in an oil bath, cooled to room temperature, and diluted with 102 g of ethyl acetate. 0.2 mol% hydrochloric acid was added for neutralization, and the aqueous layer separated into two layers was removed. The remaining organic layer was further washed three times with 52 g of water.
- reaction solution is cooled to room temperature, 44 g of propylene glycol monomethyl ether is added to the reaction solution, and methanol, ethanol, water, and hydrochloric acid as reaction by-products are distilled off under reduced pressure, and concentrated to hydrolyzed condensate (polymer)
- the weight average molecular weight of the obtained polymer (corresponding to the formula (8-1)) by GPC was Mw 1200 in terms of polystyrene.
- the mixed solution was added dropwise to the reaction solvent at room temperature. After the addition, the mixture was reacted for 240 minutes while maintaining at 40 ° C. with an oil bath, cooled to room temperature, and diluted with 90 g of ethyl acetate. 0.2 mol% hydrochloric acid was added for neutralization, and the aqueous layer separated into two layers was removed. The remaining organic layer was further washed with 45 g of water three times.
- the mixed solution was added dropwise to the reaction solvent at room temperature. After the addition, the mixture was reacted for 240 minutes while maintaining at 40 ° C. with an oil bath, cooled to room temperature, and diluted with 90 g of ethyl acetate. 0.2 mol% hydrochloric acid was added for neutralization, and the aqueous layer separated into two layers was removed. The remaining organic layer was further washed with 45 g of water three times.
- the mixed solution was added dropwise to the reaction solvent at room temperature. After the addition, the mixture was reacted for 240 minutes while maintaining at 40 ° C. with an oil bath, cooled to room temperature, and diluted with 90 g of ethyl acetate. 0.2 mol% hydrochloric acid was added for neutralization, and the aqueous layer separated into two layers was removed. The remaining organic layer was further washed with 45 g of water three times.
- the mixed solution was added dropwise to the reaction solvent at room temperature. After the addition, the mixture was reacted for 240 minutes while maintaining at 40 ° C. in an oil bath, cooled to room temperature, and diluted with 89 g of ethyl acetate. 0.2 mol% hydrochloric acid was added for neutralization, and the aqueous layer separated into two layers was removed. The remaining organic layer was further washed with 48 g of water three times.
- the mixed solution was added dropwise to the reaction solvent at room temperature. After the addition, the mixture was reacted for 240 minutes while maintaining at 40 ° C. in an oil bath, cooled to room temperature, and diluted with 82 g of ethyl acetate. 0.2 mol% hydrochloric acid was added for neutralization, and the aqueous layer separated into two layers was removed. The remaining organic layer was further washed with 41 g of water three times.
- tetramethoxymethyl glycoluril is PL-LI
- pyridinium-p-toluenesulfonic acid is PyPTS
- (3-triethoxysilylpropyl) -4,5-dihydroimidazole is IMIDTEOS
- propylene glycol monomethyl ether acetate is PGMEA and propylene glycol monomethyl ether were abbreviated as PGME.
- a resist underlayer film material was applied onto a silicon wafer by spin coating, and baked on a hot plate at 215 ° C. for 1 minute. Then, the product name OK73 thinner (manufactured by Tokyo Ohka Kogyo Co., Ltd., components were immersed in propylene glycol monomethyl ether 70% + propylene glycol monomethyl ether acetate 30%) for 1 minute, and the change in coating film thickness before and after was examined. It was. When the change in film thickness was 1 nm or less, it was good and marked with a symbol ( ⁇ ), and when the change in film thickness exceeded 2 nm, it was bad and marked with a symbol (x).
- the resist underlayer film material was applied onto a silicon wafer by spin coating, and baked on a hot plate at 215 ° C. for 1 minute. Then, it was immersed in 2.38 mass% tetramethylammonium hydroxide aqueous solution for 1 minute, and the film thickness before and behind immersion was measured. When the change in the film thickness of the coating film before and after immersion is 1 nm or less, it is good and marked ( ⁇ ), and when the change in the film thickness exceeds 2 nm, it is bad and the symbol ( ⁇ ) is marked. It was attached.
- the organic underlayer film (A layer) formation composition obtained by the above formula was applied onto a silicon wafer and baked on a hot plate at 205 ° C. for 60 seconds to obtain an organic underlayer film (A layer) having a thickness of 200 nm. .
- the Si-containing resist underlayer film (B layer) formation composition obtained in Examples 1 to 16 and Comparative Examples 1 to 3 was applied, and baked on a hot plate at 215 ° C. for 60 seconds to obtain a Si-containing resist.
- a lower layer film (B layer) was obtained.
- the film thickness of the Si-containing resist underlayer film (B layer) was 80 nm.
- a commercially available photoresist solution (manufactured by Shin-Etsu Chemical Co., Ltd., trade name SEPR430) was applied onto the B layer with a spinner, heated on a hot plate at 100 ° C. for 1 minute, and a 550 nm photoresist film (C Layer). It was exposed with a KrF exposure machine S-205C (wavelength 248 nm) manufactured by NIKON through a mask set to form a 160 nm line / space pattern.
- a resist underlayer film forming composition for lithography that can be used for manufacturing a semiconductor device.
- a resist underlayer film forming composition for lithography for forming a resist underlayer film that can be used as a hard mask.
- the resist underlayer film forming composition for lithography for forming the resist underlayer film which can be used as an antireflection film is provided. Since the resist underlayer film obtained from the resist underlayer film forming composition of the present invention is decomposed by a chemical solution such as sulfuric acid / hydrogen peroxide, it can be removed by wet etching.
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- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Abstract
Description
この要求を満たす材料として、酸を触媒として用いて加水分解性ケイ素化合物を加水分解縮合することにより得られるケイ素含有化合物と3価以上のアルコールとの組み合わせからなるレジスト下層膜形成組成物が提案されている(特許文献3参照)。
前記レジスト下層膜の除去が、従来のフッ素系ガスによるドライエッチングによる方法、又はフッ化水素酸やバッファードフッ酸などによるウエットエッチングによる方法だけでなく、より基板へのダメージが少ない硫酸/過酸化水素などの薬液を用いたウエットエッチングによる方法で除去可能なレジスト下層膜を形成するためのレジスト下層膜形成組成物を提供することにある。
(B)成分は、アルコキシメチル基又はヒドロキシメチル基を有する環構造を含む架橋性化合物、又はエポキシ基又はブロックイソシアネート基を有する架橋性化合物であることを特徴とするリソグラフィー用レジスト下層膜形成組成物、
第2観点として、該加水分解性シランが、式(1)で示される加水分解性シランとその他の加水分解性シランの組み合わせであり、その他の加水分解性シランが式(3):
第3観点として、第1観点に記載の式(1)で示される加水分解性シランと第2観点に記載の式(3)で示される加水分解性シランとの組み合わせからなる加水分解性シランの加水分解縮合物を下層膜形成ポリマーとして含むレジスト下層膜形成組成物、
第4観点として、上記(A)成分と上記(B)成分と、更に下記(C)成分とを含み、
(C)成分は加水分解性シラン、その加水分解物、又はその加水分解縮合物を含み、該加水分解性シランが式(5)で示される加水分解性シラン、式(5)で示される加水分解性シランと式(3)で示される加水分解性シランとの組み合わせ、式(5)で示される加水分解性シランと式(3)で示される加水分解性シランと式(4)で示される加水分解性シランとの組み合わせであることを特徴とする第1観点乃至第3観点のうちいずれか一つに記載のレジスト下層膜形成組成物、
第5観点として、(B)成分のアルコキシメチル基が、メトキシメチル基である第1観点乃至第4観点のうちいずれか一つに記載のレジスト下層膜形成組成物、
第6観点として、更に酸を含む第1観点乃至第5観点のうちいずれか一つに記載のレジスト下層膜形成組成物、
第7観点として、第1観点乃至第6観点のうちいずれか一つに記載のレジスト下層膜形成組成物を半導体基板上に塗布し焼成して下層膜を形成する工程を含むレジスト下層膜の形成方法、
第8観点として、第1観点乃至第6観点のうちいずれか一つに記載のレジスト下層膜形成組成物を半導体基板上に塗布し、焼成しレジスト下層膜を形成する工程、前記下層膜の上にレジスト組成物を塗布しレジスト膜を形成する工程、前記レジスト膜を露光する工程、露光後にレジストを現像しレジストパターンを得る工程、前記レジストパターンによりレジスト下層膜をエッチングする工程、及びパターン化されたレジスト下層膜により半導体基板を加工する工程を含む半導体装置の製造方法、
第9観点として、半導体基板上に有機下層膜を形成する工程、その上に第1観点乃至第6観点のうちいずれか一つに記載のレジスト下層膜形成組成物を塗布し焼成しレジスト下層膜を形成する工程、前記レジスト下層膜の上にレジスト組成物を塗布しレジスト膜を形成する工程、前記レジスト膜を露光する工程、露光後にレジストを現像しレジストパターンを得る工程、前記レジストパターンによりレジスト下層膜をエッチングする工程、パターン化されたレジスト下層膜により有機下層膜をエッチングする工程、及びパターン化された有機下層膜により半導体基板を加工する工程を含む半導体装置の製造方法、
第10観点として、半導体基板の加工後に、パターン化されたレジスト下層膜及び/又はパターン化された有機下層膜を薬液で除去する工程を含む第9観点に記載の半導体装置の製造方法、並びに
第11観点として、除去する薬液が硫酸と過酸化水素との混合水溶液である第10観点に記載の半導体装置の製造方法である。
また、本発明のレジスト下層膜を形成するためのリソグラフィー用レジスト下層膜形成組成物は、ハードマスクとして使用でき、さらには使用する露光光の波長によっては、反射防止膜として使用できる。
また、前記レジスト下層膜は、従来のフッ素系ガスによるドライエッチングによる方法、又はフッ化水素酸やバッファードフッ酸などによるウエットエッチングによる方法だけでなく、より基板へのダメージが少ない硫酸/過酸化水素などの薬液を用いたウエットエッチングによる方法で除去することが可能である。
(C)成分は加水分解性シラン、その加水分解物、又はその加水分解縮合物を含み、該加水分解性シランが式(5)で示される加水分解性シラン、式(5)で示される加水分解性シランと式(3)で示される加水分解性シランとの組み合わせ、又は式(5)で示される加水分解性シランと式(3)で示される加水分解性シランと式(4)で示される加水分解性シランとの組み合わせであることを特徴とするレジスト下層膜形成組成物である。
また、加水分解性基の1モル当たり、0.001~10モル、好ましくは0.001~1モルの加水分解触媒を用いることができる。
加水分解触媒としては、金属キレート化合物、有機酸、無機酸、有機塩基、無機塩基を挙げることができる。
本発明のレジスト下層膜形成組成物を用いて、基板上にレジスト下層膜を塗布法により形成するか、又は基板上の有機下層膜を介してその上にレジスト下層膜を塗布法により形成し、そのレジスト下層膜上にレジスト膜(例えば、フォトレジスト、電子線レジスト)を形成する。そして、露光と現像によりレジストパターンを形成し、そのレジストパターンを用いてレジスト下層膜をドライエッチングしてパターンの転写を行い、そのパターンにより基板の加工やイオン注入を行うか、又は有機下層膜をエッチングによりパターン転写しその有機下層膜により基板の加工やイオン注入を行う。さらに、その後レジスト下層膜を硫酸と過酸化水素の混合水溶液やアンモニアと過酸化水素の混合水溶液などの薬液でウエットエッチングする工程を含む。
一方、ウエットエッチングで分解できないシロキサンによる縮合反応ではなく、シラン化合物を含む加水分解性オルガノシラン、その加水分解物、又はその加水分解縮合物と架橋剤との架橋膜であるため、ウエットエッチングで分解し、除去可能なレジスト下層膜を形成することが可能となる。
1H-NMR(500MHz、DMSO-d6):2.08ppm(s、3H)、3.54ppm(s、9H)、5.10ppm(s、2H)、7.42ppm(d、2H)、7.58ppm(d、2H)
撹拌機、環流冷却器、滴下ろう斗及び温度計を備えた500mLの四口フラスコに、水75g仕込み、4-メトキシベンジルトリメトキシシラン50g(全シラン中に100mol%)のトルエン75g溶液を反応温度20℃で滴下した。滴下終了後、同温度で2時間反応し、静置後分液を行い、油層を回収した。次いで5%炭酸水素ナトリウム水溶液で洗浄した。次にそのトルエン溶液を撹拌機、蒸留塔、冷却器及び温度計を備えた500mLの四口フラスコに移し、オイルバスに入れ、徐々に加熱し、トルエンを留去した。トルエン留去後にさらに温度を上げ、200℃で2時間熟成した。その後、撹拌機、環流冷却器、滴下ろう斗及び温度計を備えた300mLの四口フラスコに移し、アセトニトリル210g、ヨウ化ナトリウム78.24g(0.522モル、トリメチルクロロシラン56.7g(0.522モル)を順次加え、70℃で24時間還流した。還流後、水69.0gを滴下し、70℃でさらに6時間還流後した。その後室温まで冷却し、亜硫酸水素ナトリウム水溶液を加え、遊離したヨウ素を還元した。さらに15%食塩水で2回洗浄し、油層を回収した。プロピレングリコールモノメチルエーテル100.0gを加え、減圧下、40℃で濃縮し、加水分解縮合物の20%プロピレングリコールモノメチルエーテル溶液を得た。得られたポリマー(式(A-1)に相当)のGPCによる重量平均分子量はポリスチレン換算でMw3800であった。
撹拌機、環流冷却器、滴下ろう斗及び温度計を備えた500mLの四口フラスコに、水74g仕込み、4-メトキシベンジルトリメトキシシラン36.3g(全シラン中に70mol%)、フェニルトリメトキシシラン12.7g(全シラン中に30mol%)のトルエン74g溶液を反応温度20℃で滴下した。滴下終了後、同温度で2時間反応し、静置後分液を行い、油層を回収した。次いで5%炭酸水素ナトリウム水溶液で洗浄した。次にそのトルエン溶液を撹拌機、蒸留塔、冷却器及び温度計を備えた500mLの四口フラスコに移し、オイルバスに入れ、徐々に加熱し、トルエンを留去した。トルエン留去後にさらに温度を上げ、200℃で2時間熟成した。その後、撹拌機、環流冷却器、滴下ろう斗及び温度計を備えた500mLの四口フラスコに移し、アセトニトリル200g、ヨウ化ナトリウム81.1g(0.541モル、トリメチルクロロシラン58.8g(0.542モル)を順次加え、70℃で24時間還流した。還流後、水67gを滴下し、70℃でさらに6時間還流後した。その後室温まで冷却し、亜硫酸水素ナトリウム水溶液を加え、遊離したヨウ素を還元した。さらに15%食塩水で2回洗浄し、油層を回収した。プロピレングリコールモノメチルエーテル120gを加え、減圧下、40℃で濃縮し、加水分解縮合物の20%プロピレングリコールモノメチルエーテル溶液を得た。得られたポリマー(式(A-2)に相当)のGPCによる重量平均分子量はポリスチレン換算でMw4800であった。
撹拌機、環流冷却器、滴下ろう斗及び温度計を備えた500mLの四口フラスコに、水71g仕込み、4-メトキシベンジルトリメトキシシラン25.9g(全シラン中に50mol%)、フェニルトリメトキシシラン21.2g(全シラン中に50mol%)のトルエン71g溶液を反応温度20℃で滴下した。滴下終了後、同温度で2時間反応し、静置後分液を行い、油層を回収した。次いで5%炭酸水素ナトリウム水溶液で洗浄した。次にそのトルエン溶液を撹拌機、蒸留塔、冷却器及び温度計を備えた500mLの四口フラスコに移し、オイルバスに入れ、徐々に加熱し、トルエンを留去した。トルエン留去後にさらに温度を上げ、200℃で2時間熟成した。その後、撹拌機、環流冷却器、滴下ろう斗及び温度計を備えた300mLの四口フラスコに移し、アセトニトリル200g、ヨウ化ナトリウム81.1g(0.541モル、トリメチルクロロシラン58.8g(0.542モル)を順次加え、70℃で24時間還流した。還流後、水67gを滴下し、70℃でさらに6時間還流後した。その後室温まで冷却し、亜硫酸水素ナトリウム水溶液を加え、遊離したヨウ素を還元した。さらに15%食塩水で2回洗浄し、油層を回収した。その後、プロピレングリコールモノメチルエーテル120gを加え、減圧下、40℃で濃縮し、加水分解縮合物の20%プロピレングリコールモノメチルエーテル溶液を得た。得られたポリマー(式(A-2)に相当)のGPCによる重量平均分子量はポリスチレン換算でMw5300であった。
撹拌子、温度計、冷却管を備えた300mLのフラスコ中に、5.06gの35質量%テトラメチルアンモニウムヒドロキシド水溶液、44.19gのイソプロパノールを入れ、反応溶媒を調製した。また、12.0g(全シラン中に70mol%)の(4-(1-エトキシエトキシ)フェニル)トリメトキシシラン、3.56g(全シラン中に30mol%)のフェニルトリメトキシシラン、7.78gのイソプロパノールの混合溶液を調製した。反応溶媒をマグネチックスターラーにて撹拌しながら、室温にて混合溶液を反応溶媒に滴下した。添加後、オイルバスで40℃に維持しながら240分反応させた後、室温まで冷却し、反応液に酢酸エチル90mLを加えて希釈した。0.2mol%塩酸を加えて中和し、2層に分離した水層を除去した。残った有機層をさらに、水47gで3回水洗した。得られた有機層にプロピレングリコールモノメチルエーテル30gを加え、酢酸エチル、イソプロパノール、メタノール、水を減圧留去し、濃縮して加水分解縮合物(ポリマー)プロピレングリコールモノメチルエーテル溶液を得た。得られたポリマー(式(A-3)に相当)のGPCによる重量平均分子量はポリスチレン換算でMw4000であった。
撹拌子、温度計、冷却管を備えた300mLのフラスコ中に、5.06gの35質量%テトラメチルアンモニウムヒドロキシド水溶液、44.19gのイソプロパノールを入れ、反応溶媒を調製した。また、12.0g(全シラン中に20mol%)の(4-(1-エトキシエトキシ)フェニル)トリメトキシシラン、20.7g(全シラン中に50mol%)のフェニルトリメトキシシラン、6.3gの(全シラン中に22mol%)のメチルトリメトキシラン、6.5gのN-3-(トリメトキシシリル)-プロピル-[1,1’-ビフェニル]-2,2’-ジカルボキシイミド(全シラン中に8mol%)、7.78gのイソプロパノールの混合溶液を調製した。反応溶媒をマグネチックスターラーにて撹拌しながら、室温にて混合溶液を反応溶媒に滴下した。添加後、オイルバスで40℃に維持しながら240分反応させた後、室温まで冷却し、反応液に酢酸エチル90gを加えて希釈した。0.2mol%塩酸を加えて中和し、2層に分離した水層を除去した。残った有機層をさらに、水47gで3回水洗した。得られた有機層にプロピレングリコールモノメチルエーテル30gを加え、酢酸エチル、イソプロパノール、反応副生物であるメタノール、エタノール、水を減圧留去し、濃縮して加水分解縮合物(ポリマー)プロピレングリコールモノメチルエーテル溶液を得た。得られたポリマー(式(A-4)に相当)のGPCによる重量平均分子量はポリスチレン換算でMw1800であった。
なお、N-3-(トリメトキシシリル)-プロピル-[1,1’-ビフェニル]-2,2’-ジカルボキシイミドは下記化合物(4-1-1)に相当し、定法により下記反応式で合成することができる。
撹拌子、温度計、冷却管を備えた300mLのフラスコ中に、5.90gの35質量%テトラメチルアンモニウムヒドロキシド水溶液、48.53gのイソプロパノールを入れ、反応溶媒を調製した。また、10.0g(全シラン中の50mol%)の(4-(1-エトキシエトキシ)フェニル)トリメトキシシラン、5.54g(全シラン中の40mol%)のフェニルトリメトキシシラン、1.55g(全シラン中の10mol%)のアセトキシプロピルトリメトキシシランの混合溶液を調製した。反応溶媒をマグネチックスターラーにて撹拌しながら、室温にて混合溶液を反応溶媒に滴下した。添加後、オイルバスで40℃に維持しながら240分反応させた後、室温まで冷却し、反応液に酢酸エチル102gを加えて希釈した。0.2mol%塩酸を加えて中和し、2層に分離した水層を除去した。残った有機層をさらに、水52gで3回水洗した。得られた有機層にプロピレングリコールモノメチルエーテル36gを加え、酢酸エチル、イソプロパノール、反応副生物であるメタノール、エタノール、水を減圧留去し、濃縮して加水分解縮合物(ポリマー)プロピレングリコールモノメチルエーテル溶液を得た。得られたポリマー(式(A-5)に相当)のGPCによる重量平均分子量はポリスチレン換算でMw1800であった。
フェニルトリメトキシシラン5.95g(全シラン中の30mol%)、メチルトリメトキシシラン12.48g(全シラン中の70mol%)、アセトン27.64gを100mLのフラスコに入れ、混合溶液をマグネチックスターラーにて撹拌しながら0.01mol/Lの塩酸5.41gを混合溶液に滴下した。添加後、85℃に調整されたオイルバスにフラスコを移し、加温還流下で240分反応させた。その後、反応溶液を室温まで冷却し、反応溶液にプロピレングリコールモノメチルエーテル44gを加え、反応副生物であるメタノール、エタノール、水、塩酸を減圧留去し、濃縮して加水分解縮合物(ポリマー)プロピレングリコールモノメチルエーテル溶液を得た。得られたポリマー(式(8-1)に相当)のGPCによる重量平均分子量はポリスチレン換算でMw1200であった。
撹拌子、温度計、冷却管を備えた300mLのフラスコ中に、6.17gの35質量%テトラメチルアンモニウムヒドロキシド水溶液、42.60gのイソプロパノールを入れ、反応溶媒を調製した。また、10.13g(全シラン中の70mol%)のフェニルトリメトキシシラン、4.87g(全シラン中の30mol%)のアセトキシプロピルトリメトキシシランの混合物を調製した。反応溶媒をマグネチックスターラーにて撹拌しながら、室温にて混合溶液を反応溶媒に滴下した。添加後、オイルバスで40℃に維持しながら240分反応させた後、室温まで冷却し、反応液に酢酸エチル90gを加えて希釈した。0.2mol%塩酸を加えて中和し、2層に分離した水層を除去した。残った有機層をさらに、水45gで3回水洗した。得られた有機層にプロピレングリコールモノメチルエーテル30gを加え、酢酸エチル、イソプロパノール、反応副生物であるメタノール、エタノール、水を減圧留去し、濃縮して加水分解縮合物(ポリマー)プロピレングリコールモノメチルエーテル溶液を得た。得られたポリマー(式(C-1)に相当)のGPCによる重量平均分子量はポリスチレン換算でMw1,500であった。
添加剤1で、6.17g加えた35質量%テトラメチルアンモニウムヒドロキシド水溶液を6.02gに代え、フェニルトリメトキシシランを7.07g(全シラン中の50mol%)、アセトキシプロピルトリメトキシシランを7.93g(全シラン中の50mol%)に代えた以外は同様の操作でポリマー(式(C-1)に相当)のプロピレングリコールモノエチルエーテル溶液を得た。このもののGPCによる重量平均分子量はポリスチレン換算でMw=1,600であった。
撹拌子、温度計、冷却管を備えた300mLのフラスコ中に、5.12gの35質量%テトラメチルアンモニウムヒドロキシド水溶液、42.59gのイソプロパノールを入れ、反応溶媒を調製した。また、8.42g(全シラン中の70mol%)のフェニルトリメトキシシラン、6.58g(全シラン中の30mol%)のN-(3-(トリメトキシシリル)プロピル)ベンゼンスルホンアミドの混合溶液を調製した。反応溶媒をマグネチックスターラーにて撹拌しながら、室温にて混合溶液を反応溶媒に滴下した。添加後、オイルバスで40℃に維持しながら240分反応させた後、室温まで冷却し、反応液に酢酸エチル90gを加えて希釈した。0.2mol%塩酸を加えて中和し、2層に分離した水層を除去した。残った有機層をさらに、水45gで3回水洗した。得られた有機層にプロピレングリコールモノメチルエーテル31gを加え、酢酸エチル、イソプロパノール、反応副生物であるメタノール、エタノール、水を減圧留去し、濃縮して加水分解縮合物(ポリマー)プロピレングリコールモノメチルエーテル溶液を得た。得られたポリマー(式(C-2)に相当)のGPCによる重量平均分子量はポリスチレン換算でMw1800であった。
撹拌子、温度計、冷却管を備えた300mLのフラスコ中に、5.14gの35質量%テトラメチルアンモニウムヒドロキシド水溶液、21.30gのイソプロパノール、21.30gのテトラヒドロフランを入れ、反応溶媒を調製した。また、8.45g(全シラン中の70mol%)のフェニルトリメトキシシラン、6.55g(全シラン中の30mol%)の5-(トリエトキシシリル)ノルボルナン-2-カルボン酸-t-ブチルの混合溶液を調製した。反応溶媒をマグネチックスターラーにて撹拌しながら、室温にて混合溶液を反応溶媒に滴下した。添加後、オイルバスで40℃に維持しながら240分反応させた後、室温まで冷却し、反応液に酢酸エチル90gを加えて希釈した。0.2mol%塩酸を加えて中和し、2層に分離した水層を除去した。残った有機層をさらに、水45gで3回水洗した。得られた有機層にプロピレングリコールモノメチルエーテル30gを加え、酢酸エチル、イソプロパノール、反応副生物であるメタノール、エタノール、水を減圧留去し、濃縮して加水分解縮合物(ポリマー)プロピレングリコールモノメチルエーテル溶液を得た。得られたポリマー(式(C-3)に相当)のGPCによる重量平均分子量はポリスチレン換算でMw1800であった。
撹拌子、温度計、冷却管を備えた300mLのフラスコ中に、5.15gの35質量%テトラメチルアンモニウムヒドロキシド水溶液、21.30gのイソプロパノール、21.30gのテトラヒドロフランを入れ、反応溶媒を調製した。また、10.93g(全シラン中の70mol%)の5-(トリエトキシシリル)ノルボルネン、4.07g(全シラン中の30mol%)の3-アセトキシプロピルトリメトキシシランの混合溶液を調製した。反応溶媒をマグネチックスターラーにて撹拌しながら、室温にて混合溶液を反応溶媒に滴下した。添加後、オイルバスで40℃に維持しながら240分反応させた後、室温まで冷却し、反応液に酢酸エチル90gを加えて希釈した。0.2mol%塩酸を加えて中和し、2層に分離した水層を除去した。残った有機層をさらに、水45gで3回水洗した。得られた有機層にプロピレングリコールモノメチルエーテル27gを加え、酢酸エチル、イソプロパノール、反応副生物であるメタノール、エタノール、水を減圧留去し、濃縮して加水分解縮合物(ポリマー)プロピレングリコールモノメチルエーテル溶液を得た。得られたポリマー(式(C-4)に相当)のGPCによる重量平均分子量はポリスチレン換算でMw1800であった。
撹拌子、温度計、冷却管を備えた300mLのフラスコ中に、4.40gの35質量%テトラメチルアンモニウムヒドロキシド水溶液、22.61gのイソプロパノール、22・61gのテトラヒドロフランを入れ、反応溶媒を調製した。また、9.35g(全シラン中の70mol%)のフォニルトリメトキシシラン、6.58g(全シラン中の30mol%)のジt-ブチル2-(3-トリエトキシシリル)プロピルマロネートの混合溶液を調製した。反応溶媒をマグネチックスターラーにて撹拌しながら、室温にて混合溶液を反応溶媒に滴下した。添加後、オイルバスで40℃に維持しながら240分反応させた後、室温まで冷却し、反応液に酢酸エチル89gを加えて希釈した。0.2mol%塩酸を加えて中和し、2層に分離した水層を除去した。残った有機層をさらに、水48gで3回水洗した。得られた有機層にプロピレングリコールモノメチルエーテル28gを加え、酢酸エチル、イソプロパノール、反応副生物であるメタノール、エタノール、水を減圧留去し、濃縮して加水分解縮合物(ポリマー)プロピレングリコールモノメチルエーテル溶液を得た。得られたポリマー(式(C-5)に相当)のGPCによる重量平均分子量はポリスチレン換算でMw1600であった。
撹拌子、温度計、冷却管を備えた300mLのフラスコ中に、4.42gの35質量%テトラメチルアンモニウムヒドロキシド水溶液、19.34gのイソプロパノール、19.34gのテトラヒドロフランを入れ、反応溶媒を調製した。また、9.38g(全シラン中の70mol%)のフェニルトリメトキシシラン、4.24g(全シラン中の30mol%)の4-(トリメトキシシリル)ベンジルアセテートの混合溶液を調製した。反応溶媒をマグネチックスターラーにて撹拌しながら、室温にて混合溶液を反応溶媒に滴下した。添加後、オイルバスで40℃に維持しながら240分反応させた後、室温まで冷却し、反応液に酢酸エチル82gを加えて希釈した。0.2mol%塩酸を加えて中和し、2層に分離した水層を除去した。残った有機層をさらに、水41gで3回水洗した。得られた有機層にプロピレングリコールモノメチルエーテル28gを加え、酢酸エチル、イソプロパノール、反応副生物であるメタノール、エタノール、水を減圧留去し、濃縮して加水分解縮合物(ポリマー)プロピレングリコールモノメチルエーテル溶液を得た。得られたポリマー(式(C-6)に相当)のGPCによる重量平均分子量はポリスチレン換算でMw1600であった。
上記合成例1~6、比較合成例1、添加剤合成例1~7で得られたケイ素含有ポリマー、架橋性化合物、硬化触媒、添加剤、溶剤を表1~3に示す割合で混合し、0.1μmのフッ素樹脂製のフィルターで濾過することによって、レジスト下層膜形成組成物の溶液をそれぞれ調製した。
表1、2中でテトラメトキシメチルグリコールウリルをPL-LI、ピリジニウム-p-トルエンスルホン酸をPyPTS、(3-トリエトキシシリプロピル)-4,5-ジヒドロイミダゾールはIMIDTEOS、プロピレングリコールモノメチルエーテルアセテートはPGMEA、プロピレングリコールモノメチルエーテルはPGMEと略した。この他メチロール化合物である商品名TM-BIP-A(旭有機材工業(株)製)、シクロヘキセンオキサイド構造を有するエポキシ樹脂である商品名エポリードGT-401(ダイセル工業(株)製)、ブロックイソシアネート化合物である商品名VESTANAT1358(EVONIK社製)を用いた。
各添加量は質量部で示した。ポリマーの添加量はポリマー溶液の質量ではなく、ポリマーの質量である。
シリコンウェハー上にレジスト下層膜材料をスピンコート法にて塗布し、215℃のホットプレート上で1分間焼成させた。その後、商品名OK73シンナー(東京応化工業(株)製、成分はプロピレングリコールモノメチルエーテル70%+プロピレングリコールモノメチルエーテルアセテート30%)に1分間浸漬し、前後での塗膜の膜厚の変化を調べた。膜厚の変化が1nm以下である場合は良好であり記号(○)を付し、膜厚の変化が2nmを越える場合は不良であり記号(×)を付した。
レジスト下層膜材料をシリコンウェハー上にスピンコート法にて塗布し、215℃のホットプレート上にて1分間焼成した。その後、2.38質量%テトラメチルアンモニウムハイドロオキサイド水溶液に1分間浸漬し、浸漬前後の膜厚を測定した。浸漬前後での塗膜の膜厚の変化が1nm以下である場合は良好であり記号(○)を付し、塗膜の膜厚の変化が2nmを越える場合は不良であり記号(×)を付した。
上記で得たケイ素含有膜形成用組成物で成膜したケイ素含有膜を、96%硫酸と35%過酸化水素水を3対1で混合した硫酸過水中、50℃で30秒間浸漬し剥離性能を確認した。湿式除去性の評価結果は表4にオングストローム/minで表示した。
窒素下、100mLの四口フラスコにカルバゾール(6.69g、0.040mol、東京化成工業(株)製)、9-フルオレノン(7.28g、0.040mol、東京化成工業(株)製)、パラトルエンスルホン酸一水和物(0.76g、0.0040mol、東京化成工業(株)製)を加え、1,4-ジオキサン(6.69g、関東化学(株)製)を仕込み撹拌し、100℃まで昇温し溶解させ重合を開始した。24時間後60℃まで放冷後、クロロホルム(34g、関東化学(株)製)を加え希釈し、メタノール(168g、関東化学(株)製)へ再沈殿させた。得られた沈殿物をろ過し、減圧乾燥機で80℃、24時間乾燥し、目的とするポリマー(式(9-1)に相当、以下PCzFLと略す)9.37gを得た。
1H-NMR(400MHz,DMSO-d6):δ7.03-7.55(br,12H),δ7.61-8.10(br,4H),δ11.18(br,1H)
PCzFLのGPCによるポリスチレン換算で測定される重量平均分子量Mwは2800、多分散度Mw/Mnは1.77であった。
得られた樹脂20gに、架橋剤としてテトラメトキシメチルグリコールウリル(三井サイテック(株)製、商品名パウダーリンク1174)3.0g、触媒としてピリジニウムパラトルエンスルホネート0.30g、界面活性剤としてメガファック商品名R-30(DIC(株)製)0.06gを混合し、プロピレングリコールモノメチルエーテルアセテート88gに溶解させ溶液とした。その後、孔径0.10μmのポリエチレン製ミクロフィルターを用いて濾過し、更に、孔径0.05μmのポリエチレン製ミクロフィルターを用いて濾過して、多層膜によるリソグラフィープロセスに用いる有機下層膜(A層)形成組成物の溶液を調製した。
上記式で得られた有機下層膜(A層)形成組成物をシリコンウェハー上に塗布し、ホットプレート上で205℃で60秒間ベークし、膜厚200nmの有機下層膜(A層)を得た。その上に、実施例1~16、比較例1~3で得られたSi含有レジスト下層膜(B層)形成組成物を塗布し、ホットプレート上で215℃で60秒間ベークし、Si含有レジスト下層膜(B層)を得た。Si含有レジスト下層膜(B層)の膜厚は80nmであった。
B層の上に市販のフォトレジスト溶液(信越化学工業(株)製、商品名SEPR430)をスピナーによりそれぞれ塗布し、ホットプレート上で100℃にて1分間加熱し、550nmのフォトレジスト膜(C層)を形成した。
160nmのライン/スペースパターンが形成されるように設定されたマスクを通して、NIKON社製、KrF露光機S-205C(波長248nm)で露光した。110℃で90秒間露光後加熱を行った後、フォトレジスト用現像液として2.38%テトラメチルアンモニウムヒドロキシド水溶液(東京応化工業(株)製、商品名NMD-3)を用いて60秒間パドル現像を行った。得られたフォトレジストパターンについて、大きなパターン剥がれやアンダーカット、ライン底部の太り(フッティング)が発生しないものを良好として評価した。
本発明のレジスト下層膜形成組成物から得られたレジスト下層膜は、硫酸/過酸化水素などの薬液で分解するため、ウエットエッチングで除去可能である。
Claims (11)
- (A)成分と(B)成分とを含み、(A)成分は加水分解性シラン、その加水分解物、又はその加水分解縮合物を含み、該加水分解性シランが式(1):
(B)成分は、アルコキシメチル基又はヒドロキシメチル基を有する環構造を含む架橋性化合物、又はエポキシ基又はブロックイソシアネート基を有する架橋性化合物であることを特徴とするリソグラフィー用レジスト下層膜形成組成物。 - 該加水分解性シランが、式(1)で示される加水分解性シランとその他の加水分解性シランとの組み合わせであり、その他の加水分解性シランが式(3):
- 請求項1に記載の式(1)で示される加水分解性シランと請求項2に記載の式(3)で示される加水分解性シランとの組み合わせからなる加水分解性シランの加水分解縮合物を下層膜形成ポリマーとして含むレジスト下層膜形成組成物。
- 上記(A)成分と上記(B)成分と、更に下記(C)成分とを含み、
(C)成分は加水分解性シラン、その加水分解物、又はその加水分解縮合物を含み、該加水分解性シランが式(5)で示される加水分解性シラン、式(5)で示される加水分解性シランと式(3)で示される加水分解性シランとの組み合わせ、又は式(5)で示される加水分解性シランと式(3)で示される加水分解性シランと式(4)で示される加水分解性シランとの組み合わせであることを特徴とする請求項1乃至請求項3のうちいずれか1項に記載のレジスト下層膜形成組成物。
- (B)成分のアルコキシメチル基が、メトキシメチル基である請求項1乃至請求項4のうちいずれか1項に記載のレジスト下層膜形成組成物。
- 更に酸を含む請求項1乃至請求項5のうちいずれか1項に記載のレジスト下層膜形成組成物。
- 請求項1乃至請求項6のうちいずれか1項に記載のレジスト下層膜形成組成物を半導体基板上に塗布し焼成して下層膜を形成する工程を含むレジスト下層膜の形成方法。
- 請求項1乃至請求項6のうちいずれか1項に記載のレジスト下層膜形成組成物を半導体基板上に塗布し、焼成しレジスト下層膜を形成する工程、前記下層膜の上にレジスト組成物を塗布しレジスト膜を形成する工程、前記レジスト膜を露光する工程、露光後にレジストを現像しレジストパターンを得る工程、前記レジストパターンによりレジスト下層膜をエッチングする工程、及びパターン化されたレジスト下層膜により半導体基板を加工する工程を含む半導体装置の製造方法。
- 半導体基板上に有機下層膜を形成する工程、その上に請求項1乃至請求項6のうちいずれか1項に記載のレジスト下層膜形成組成物を塗布し焼成しレジスト下層膜を形成する工程、前記レジスト下層膜の上にレジスト組成物を塗布しレジスト膜を形成する工程、前記レジスト膜を露光する工程、露光後にレジストを現像しレジストパターンを得る工程、前記レジストパターンによりレジスト下層膜をエッチングする工程、パターン化されたレジスト下層膜により有機下層膜をエッチングする工程、及びパターン化された有機下層膜により半導体基板を加工する工程を含む半導体装置の製造方法。
- 半導体基板の加工後に、パターン化されたレジスト下層膜及び/又はパターン化された有機下層膜を薬液で除去する工程を含む請求項9に記載の半導体装置の製造方法。
- 除去する薬液が硫酸と過酸化水素との混合水溶液である請求項10に記載の半導体装置の製造方法。
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US15/522,493 US11815815B2 (en) | 2014-11-19 | 2015-11-06 | Composition for forming silicon-containing resist underlayer film removable by wet process |
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SG11201703607RA SG11201703607RA (en) | 2014-11-19 | 2015-11-06 | Composition for forming silicon-containing resist underlayer film removable by wet process |
JP2016560146A JP6660023B2 (ja) | 2014-11-19 | 2015-11-06 | 湿式除去が可能なシリコン含有レジスト下層膜形成組成物 |
CN201580056230.2A CN107077072B (zh) | 2014-11-19 | 2015-11-06 | 能够湿式除去的含有硅的抗蚀剂下层膜形成用组合物 |
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JP7199563B2 (ja) | 2019-03-13 | 2023-01-05 | ヨンチャン ケミカル カンパニー リミテッド | 半導体製造工程における新規なエッチングパターン形成方法 |
JP2022522811A (ja) * | 2019-03-13 | 2022-04-20 | ヨンチャン ケミカル カンパニー リミテッド | 半導体製造工程における新規なエッチングパターン形成方法 |
JP7341309B2 (ja) | 2020-02-19 | 2023-09-08 | 東京エレクトロン株式会社 | 基板処理方法及び基板処理システム |
WO2021166674A1 (ja) * | 2020-02-19 | 2021-08-26 | 東京エレクトロン株式会社 | 基板処理方法及び基板処理システム |
JPWO2021166674A1 (ja) * | 2020-02-19 | 2021-08-26 | ||
WO2021201167A1 (ja) * | 2020-03-31 | 2021-10-07 | 日産化学株式会社 | 膜形成用組成物 |
WO2022210901A1 (ja) * | 2021-03-31 | 2022-10-06 | 日産化学株式会社 | シリコン含有レジスト下層膜形成用組成物 |
WO2023157772A1 (ja) * | 2022-02-16 | 2023-08-24 | 日産化学株式会社 | 保護膜形成用組成物 |
WO2024162459A1 (ja) * | 2023-02-03 | 2024-08-08 | 日産化学株式会社 | 環境負荷を低減するためのレジスト下層膜形成用組成物 |
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KR20170086467A (ko) | 2017-07-26 |
JP6660023B2 (ja) | 2020-03-04 |
TWI691560B (zh) | 2020-04-21 |
CN107077072A (zh) | 2017-08-18 |
US20170371242A1 (en) | 2017-12-28 |
KR102439087B1 (ko) | 2022-09-01 |
JPWO2016080217A1 (ja) | 2017-08-31 |
SG11201703607RA (en) | 2017-06-29 |
TW201634615A (zh) | 2016-10-01 |
US11815815B2 (en) | 2023-11-14 |
CN107077072B (zh) | 2021-05-25 |
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