JP5178837B2 - レゾルシノールを含有する剥離溶液を用いた金属保護の改善 - Google Patents
レゾルシノールを含有する剥離溶液を用いた金属保護の改善 Download PDFInfo
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- JP5178837B2 JP5178837B2 JP2010521124A JP2010521124A JP5178837B2 JP 5178837 B2 JP5178837 B2 JP 5178837B2 JP 2010521124 A JP2010521124 A JP 2010521124A JP 2010521124 A JP2010521124 A JP 2010521124A JP 5178837 B2 JP5178837 B2 JP 5178837B2
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- stripping solution
- resorcinol
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- metal
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- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 58
- 239000002184 metal Substances 0.000 title claims abstract description 58
- 239000010949 copper Substances 0.000 claims abstract description 48
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 47
- 229910052802 copper Inorganic materials 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims description 59
- 239000000758 substrate Substances 0.000 claims description 37
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 28
- 239000003112 inhibitor Substances 0.000 claims description 18
- 230000007797 corrosion Effects 0.000 claims description 15
- 238000005260 corrosion Methods 0.000 claims description 15
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 8
- GIAFURWZWWWBQT-UHFFFAOYSA-N 2-(2-aminoethoxy)ethanol Chemical compound NCCOCCO GIAFURWZWWWBQT-UHFFFAOYSA-N 0.000 claims description 6
- 239000000908 ammonium hydroxide Substances 0.000 claims description 6
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 6
- 229920002120 photoresistant polymer Polymers 0.000 claims description 5
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 3
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- MFKRHJVUCZRDTF-UHFFFAOYSA-N 3-methoxy-3-methylbutan-1-ol Chemical compound COC(C)(C)CCO MFKRHJVUCZRDTF-UHFFFAOYSA-N 0.000 claims description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims 6
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 claims 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
- 239000010936 titanium Substances 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 claims 1
- 150000005207 1,3-dihydroxybenzenes Chemical class 0.000 abstract description 29
- 150000001879 copper Chemical class 0.000 abstract description 20
- 239000004065 semiconductor Substances 0.000 abstract description 14
- 150000001412 amines Chemical class 0.000 abstract description 13
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 3
- 229910001092 metal group alloy Inorganic materials 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 112
- 239000010408 film Substances 0.000 description 24
- 238000009472 formulation Methods 0.000 description 21
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 14
- 238000012360 testing method Methods 0.000 description 12
- 150000003839 salts Chemical group 0.000 description 11
- 235000012431 wafers Nutrition 0.000 description 11
- 239000000956 alloy Substances 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000005530 etching Methods 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical class OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 6
- 239000000523 sample Substances 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 238000004321 preservation Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- -1 amine hydroxides Chemical class 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- RWZYAGGXGHYGMB-UHFFFAOYSA-N anthranilic acid Chemical compound NC1=CC=CC=C1C(O)=O RWZYAGGXGHYGMB-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 2
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 229940074391 gallic acid Drugs 0.000 description 2
- 235000004515 gallic acid Nutrition 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 1
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- LHIJANUOQQMGNT-UHFFFAOYSA-N aminoethylethanolamine Chemical compound NCCNCCO LHIJANUOQQMGNT-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- JERCPDZTVRGVSH-UHFFFAOYSA-N benzene-1,2-diol;benzene-1,3-diol Chemical compound OC1=CC=CC(O)=C1.OC1=CC=CC=C1O JERCPDZTVRGVSH-UHFFFAOYSA-N 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010349 cathodic reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000010941 cobalt Chemical class 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical class [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 231100000324 minimal toxicity Toxicity 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229940079877 pyrogallol Drugs 0.000 description 1
- 238000005389 semiconductor device fabrication Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/42—Stripping or agents therefor
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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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/42—Stripping or agents therefor
- G03F7/422—Stripping or agents therefor using liquids only
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
- C11D7/04—Water-soluble compounds
- C11D7/10—Salts
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/26—Organic compounds containing oxygen
- C11D7/261—Alcohols; Phenols
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/32—Organic compounds containing nitrogen
- C11D7/3209—Amines or imines with one to four nitrogen atoms; Quaternized amines
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- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/32—Organic compounds containing nitrogen
- C11D7/3218—Alkanolamines or alkanolimines
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/50—Solvents
- C11D7/5004—Organic solvents
- C11D7/5009—Organic solvents containing phosphorus, sulfur or silicon, e.g. dimethylsulfoxide
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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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/42—Stripping or agents therefor
- G03F7/422—Stripping or agents therefor using liquids only
- G03F7/425—Stripping or agents therefor using liquids only containing mineral alkaline compounds; containing organic basic compounds, e.g. quaternary ammonium compounds; containing heterocyclic basic compounds containing nitrogen
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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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/42—Stripping or agents therefor
- G03F7/422—Stripping or agents therefor using liquids only
- G03F7/426—Stripping or agents therefor using liquids only containing organic halogen compounds; containing organic sulfonic acids or salts thereof; containing sulfoxides
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- 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
- H01L21/02041—Cleaning
- H01L21/02057—Cleaning during device manufacture
- H01L21/02068—Cleaning during device manufacture during, before or after processing of conductive layers, e.g. polysilicon or amorphous silicon layers
- H01L21/02071—Cleaning during device manufacture during, before or after processing of conductive layers, e.g. polysilicon or amorphous silicon layers the processing being a delineation, e.g. RIE, of conductive layers
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- 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
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/30604—Chemical etching
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- 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
- H01L21/31127—Etching organic layers
- H01L21/31133—Etching organic layers by chemical means
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/22—Electronic devices, e.g. PCBs or semiconductors
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- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Emergency Medicine (AREA)
- Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
- ing And Chemical Polishing (AREA)
- Detergent Compositions (AREA)
- Weting (AREA)
Description
MCF = (a−b)/a
と定義され、式中、「a」はレゾルシノール又はレゾルシノール誘導体を含有しない剥離溶液で決定されたエッチレートであり、「b」は例えばレゾルシノール誘導体などのエッチング防止剤を含有する同一の剥離溶液で決定されたエッチレートである。本明細書中で用いられる用語「金属」は、例えば銅などの金属、及び/又は例えばTiWなどの金属合金のことを指しうる。レゾルシノール誘導体としては、芳香族環の位置、又は一つもしくは両方のヒドロキシル基に付加された一つ以上の追加の部分を有するか又は有しない1,3−ジヒドロキシベンゼンが挙げられる。用語「レゾルシノール」又は「レゾルシノール類」は、レゾルシノール自体、及び/又はその誘導体を指すために用いるものとする。好ましいレゾルシノール類は、提供された剥離溶液中に可溶であり、剥離溶液のpHに依存して、プロトン化した形態、塩の形態、又はそれらの組み合わせとして存在することができる。レゾルシノール自体は、これまでの試験に基づけば好ましいものであり、アミン、第4級水酸化アミン、及び溶媒の様々な組み合わせに基づく剥離溶液の範囲を利用する銅のエッチレートを低下させるのに効果的であることが分かっている。本明細書中において用いる用語「レジスト」は、フォトレジストもしくはレジスト、レジスト残渣、エッチング後残渣、又はその組み合わせを指す。
エッチレートの調査のために、以下の配合を有する剥離溶液Aを調製した:剥離溶液A−85.7%のジメチルスルホキシド、6.0%のジエチレングリコールメチルエーテル、2.7%のテトラメチル水酸化アンモニウム、2.7%のアミノエチルエタノールアミン、2.8%の水、及び0.1のZonyl(登録商標)FSO。0.13%、0.25%、0.5%、及び1%の剥離溶液中のレゾルシノールの濃度を提供するのに十分な溶液中のレゾルシノールとなるように剥離溶液Aの一部にレゾルシノールを添加した。レゾルシノールの添加されていない対照溶液を以下のエッチレートの調査に使用した。
以下の表IIに提供される様々な剥離溶液の配合を、実施例1に記載したように、実施例1に記載された種類のテストストリップと接触させた。レゾルシノールの添加とともに、及びレゾルシノール無しで各々の配合をテストし、銅エッチレートを決定した。配合1〜5が含有する添加されたレゾルシノールは、0.25重量%であった。テストした全ての銅ウエハは、Silicon Valley Microelectronics, Inc.から購入した。様々な剥離溶液の水分含有量を、適用可能な場合には、溶液の乾燥係数(dryness coefficient(DC))としてこの実施例において示す。乾燥係数は式
DC=(塩基の質量/テストした溶液の質量)/(水の質量/テストされた溶液の質量)
によって定義される。
以下の表IIIに提供される様々な剥離溶液の配合を、実施例1に記載したように、実施例1に記載された種類のテストストリップと接触させた。レゾルシノール誘導体の添加とともに、又は誘導体無しで各々の配合をテストし、銅エッチレートを決定した。添加されたレゾルシノール誘導体を含有する配合は、0.5重量%の添加剤を含有していた。この実施例において用いた銅ウエハは、実施例2において利用された市販のウエハと一般的に相互に交換可能であると決定された非商業的な供給源から入手した。
以下の表IVに提供される剥離溶液の配合を、実施例1に記載したように、実施例1に記載された種類のテストストリップと接触させた。配合1は、既知の腐食防止剤であるカテコールを含有する。配合2は、そのカテコールをより低い濃度のレゾルシノールに変更した。そして、両方の配合に関して銅エッチレートを決定した。
以下の表Vにおいて提供される様々な剥離溶液の配合を、テストストリップに接触させた。テストストリップはプラズマ気相堆積させたTiW薄膜で覆われた市販のシリコンウエハから劈開し、およそ2cm×2cmの寸法であった。各片のTiWの膜厚を4探針を用いて3度測定し、初期のTiW膜厚として平均の膜厚を計算した。テストされた各々の溶液に関して、3つのテストサンプルを剥離溶液に30分間浸漬し、洗浄し、そしてTiW膜厚を測定し、これを各々のテストサンプルに関して繰り返した。各々のテストサンプルに関する平均のTiW膜厚を、結果物のTiW膜厚と判断した。TiW膜厚の損失を、初期の膜厚から結果物のTiW膜厚を引き算することにより決定した。30分間で観測されたTiW膜厚の損失(オングストロームで)を30で割ることにより、オングストローム/分の単位でのエッチレートを与えた。レゾルシノールとともに、又はレゾルシノール無しで各々の配合をテストし、TiWエッチレートを決定した。全ての配合は、0.5重量%で添加されたレゾルシノールを含有していた。
上述の方法を利用して、0重量%〜10重量%の範囲の量でレゾルシノールを含有する剥離製剤にさらした場合の、アルミニウムを含有する基板に関するエッチレートを決定した。得られたエッチレート及び金属保存係数を、以下の表VIに提供する。結果は、一定の金属にさらした選択された剥離製剤に関して、レゾルシノール濃度が重要であることを説明している。
Claims (23)
- (a)レジスト及び金属をその上に有する基板を準備し;そして
(b)前記基板を剥離溶液と0.02重量%〜1重量%のレゾルシノールを含む腐食防止剤とを含む組成物と接触させる
工程を含み、該腐食防止剤の重量%は組成物の総重量%を基準とする、基板からレジストを取り除くための方法。 - 前記接触は、前記基板を0よりも大きく且つ1以下の値を有する金属保存係数(MCF)を有する組成物と接触させることを含み、前記MCFは
MCF=(a−b)/a
として定義され、式中、「a」は前記レゾルシノールを含有しない前記剥離溶液で決定されたエッチレートであり、「b」は前記レゾルシノールを含有する前記剥離溶液で決定されたエッチレートである、請求項1に記載の方法。 - 前記接触は、前記基板を、ジメチルスルホキシド(DMSO)、第4級水酸化アンモニウム、及びアルカノールアミンを含む組成物と接触させることを含む、請求項1に記載の方法。
- 前記接触は、前記基板を、二次溶媒を更に含む組成物と接触させることを含む、請求項3に記載の方法。
- 前記基板の準備は、前記レジストがフォトレジストである基板を準備することを含む、請求項1に記載の方法。
- 前記金属が銅である、請求項1に記載の方法。
- 前記金属がTiWである、請求項1に記載の方法。
- 前記基板の準備は、前記レジストがエッチング後残渣である基板を準備することを含む、請求項1に記載の方法。
- 請求項1に記載の方法によって部分的に得られる、集積回路デバイス。
- 請求項1に記載の方法によって部分的に得られる、電気的相互接続構造。
- 銅、タングステン、チタン、又はこれらの組み合わせを含む金属を含有する基板からレジスト残渣を取り除くための、剥離溶液と約0.02重量%〜約1重量%のレゾルシノールから本質的になる腐食防止剤と含む組成物であって、該腐食防止剤の重量%は組成物の総重量%を基準とする、前記組成物。
- 0よりも大きく且つ1以下の範囲の金属保存係数(MCF)を有する請求項11に記載の組成物であって、前記MCFは
MCF=(a−b)/a
として定義され、式中、「a」は前記レゾルシノールを含有しない前記剥離溶液で決定されたエッチレートであり、「b」は前記レゾルシノールを含有する前記剥離溶液で決定されたエッチレートである、前記組成物。 - 前記組成物は、ジメチルスルホキシド(DMSO)、第4級水酸化アンモニウム、及びアルカノールアミンを含む、請求項11に記載の組成物。
- 前記組成物は、二次溶媒を更に含む、請求項13に記載の組成物。
- 前記組成物が、約29.5%のジエチレングリコールアミン、約30.5%のN−メチルピロリドン、約5%のγ―ブチロラクトン、約35%のジエチレングリコールブチルエーテル、及び約0.5%のレゾルシノールを含む、請求項1に記載の方法。
- 前記組成物が、約35%のヒドロキシルアミン、約64.5%のジグリコールアミン、及び約0.5%のレゾルシノールを含む、請求項1に記載の方法。
- 約29.5%のジエチレングリコールアミン、約30%のN−メチルピロリドン、約5%のγ−ブチロラクトン、約35%のジエチレングリコールブチルエーテル、及び約0.5%のレゾルシノールを含む、請求項11に記載の組成物。
- 約35%のヒドロキシルアミン、約64.5%のジグリコールアミン、及び約0.5%のレゾルシノールを含む、請求項11に記載の組成物。
- 前記剥離溶液が、約86%のDMSO、約2.7%のテトラメチル水酸化アンモニウム、約2.5%のN−(2−アミノエチル)−エタノール、及び約2.8%の水を含む、請求項1に記載の方法。
- 前記剥離溶液が、約65%のDMSO、約25%のモノエタノールアミン、約5%のテトラメチル水酸化アンモニウム、及び約5%の水を含む、請求項1に記載の方法。
- 前記剥離溶液が、約45%のDMSO、約25%のモノエタノールアミン、約10%のテトラメチル水酸化アンモニウム、約10%の3−メチル−3−メトキシブタノール、及び約10%の水を含む、請求項1に記載の方法。
- 前記剥離溶液が、約92%のDMSO、約2%のテトラメチル水酸化アンモニウム、及び約6%の水を含む、請求項1に記載の方法。
- 前記剥離溶液が、約29.5%のジエチレングリコールアミン、約30.5%のN−メチルピロリドン、約5%のγ−ブチロラクトン、約35%のジエチレングリコールブチルエーテルを含む、請求項1に記載の方法。
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US20060073997A1 (en) * | 2004-09-30 | 2006-04-06 | Lam Research Corporation | Solutions for cleaning silicon semiconductors or silicon oxides |
JP4988165B2 (ja) * | 2005-03-11 | 2012-08-01 | 関東化学株式会社 | フォトレジスト剥離液組成物及びフォトレジストの剥離方法 |
US7700533B2 (en) | 2005-06-23 | 2010-04-20 | Air Products And Chemicals, Inc. | Composition for removal of residue comprising cationic salts and methods using same |
US7879782B2 (en) | 2005-10-13 | 2011-02-01 | Air Products And Chemicals, Inc. | Aqueous cleaning composition and method for using same |
US7655608B2 (en) * | 2007-08-03 | 2010-02-02 | Dynaloy, Llc | Reduced metal etch rates using stripper solutions containing a copper salt |
US8551682B2 (en) * | 2007-08-15 | 2013-10-08 | Dynaloy, Llc | Metal conservation with stripper solutions containing resorcinol |
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2007
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2008
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KR20100061490A (ko) | 2010-06-07 |
JP2013008042A (ja) | 2013-01-10 |
US20090047609A1 (en) | 2009-02-19 |
TW200912564A (en) | 2009-03-16 |
WO2009023675A3 (en) | 2009-04-16 |
US9012387B2 (en) | 2015-04-21 |
JP5426738B2 (ja) | 2014-02-26 |
KR20150040375A (ko) | 2015-04-14 |
US20130334679A1 (en) | 2013-12-19 |
JP2010537231A (ja) | 2010-12-02 |
US8551682B2 (en) | 2013-10-08 |
WO2009023675A2 (en) | 2009-02-19 |
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