TW201012921A - Cleaning compositions with very low dielectric etch rates - Google Patents
Cleaning compositions with very low dielectric etch rates Download PDFInfo
- Publication number
- TW201012921A TW201012921A TW098124762A TW98124762A TW201012921A TW 201012921 A TW201012921 A TW 201012921A TW 098124762 A TW098124762 A TW 098124762A TW 98124762 A TW98124762 A TW 98124762A TW 201012921 A TW201012921 A TW 201012921A
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- TW
- Taiwan
- Prior art keywords
- weight
- cleaning composition
- organic
- composition
- cleaning
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims abstract description 55
- 238000004140 cleaning Methods 0.000 title claims abstract description 45
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000011668 ascorbic acid Substances 0.000 claims abstract description 15
- 229960005070 ascorbic acid Drugs 0.000 claims abstract description 15
- 235000010323 ascorbic acid Nutrition 0.000 claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 239000003112 inhibitor Substances 0.000 claims abstract description 12
- 150000001412 amines Chemical class 0.000 claims abstract description 11
- 230000007797 corrosion Effects 0.000 claims abstract description 11
- 238000005260 corrosion Methods 0.000 claims abstract description 11
- 150000003839 salts Chemical class 0.000 claims abstract description 10
- -1 e.g. Substances 0.000 claims abstract description 9
- 150000007524 organic acids Chemical class 0.000 claims abstract description 7
- 229920000620 organic polymer Polymers 0.000 claims abstract description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 38
- 239000004065 semiconductor Substances 0.000 claims description 18
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical group CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 229910052731 fluorine Inorganic materials 0.000 claims description 5
- 239000011737 fluorine Substances 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 3
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims description 2
- 238000002309 gasification Methods 0.000 claims description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims 4
- 239000003989 dielectric material Substances 0.000 abstract description 11
- 238000005530 etching Methods 0.000 abstract description 7
- 229920000642 polymer Polymers 0.000 abstract description 6
- 150000004679 hydroxides Chemical class 0.000 abstract description 2
- 239000002952 polymeric resin Substances 0.000 abstract description 2
- 150000004673 fluoride salts Chemical class 0.000 abstract 1
- 229920002120 photoresistant polymer Polymers 0.000 description 15
- 239000010949 copper Substances 0.000 description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 238000004380 ashing Methods 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 9
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 9
- 229960000583 acetic acid Drugs 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 8
- 239000000758 substrate Substances 0.000 description 8
- 239000011521 glass Substances 0.000 description 7
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229940074391 gallic acid Drugs 0.000 description 5
- 235000004515 gallic acid Nutrition 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910000420 cerium oxide Inorganic materials 0.000 description 4
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 4
- 238000004377 microelectronic Methods 0.000 description 3
- 238000001020 plasma etching Methods 0.000 description 3
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 229960002887 deanol Drugs 0.000 description 2
- 229940104869 fluorosilicate Drugs 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000004442 gravimetric analysis Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- 239000005368 silicate glass Substances 0.000 description 2
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 2
- KXLDNTZSVSISCK-UHFFFAOYSA-N 1-carbamimidoyl-1-(2-hydroxyethyl)guanidine Chemical compound OCCN(C(N)=N)C(=N)N KXLDNTZSVSISCK-UHFFFAOYSA-N 0.000 description 1
- UUYOIIPPYGYPJC-UHFFFAOYSA-N 2-(dipentylamino)ethanol Chemical compound CCCCCN(CCO)CCCCC UUYOIIPPYGYPJC-UHFFFAOYSA-N 0.000 description 1
- BTXXTMOWISPQSJ-UHFFFAOYSA-N 4,4,4-trifluorobutan-2-one Chemical compound CC(=O)CC(F)(F)F BTXXTMOWISPQSJ-UHFFFAOYSA-N 0.000 description 1
- BQACOLQNOUYJCE-FYZZASKESA-N Abietic acid Natural products CC(C)C1=CC2=CC[C@]3(C)[C@](C)(CCC[C@@]3(C)C(=O)O)[C@H]2CC1 BQACOLQNOUYJCE-FYZZASKESA-N 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 150000000996 L-ascorbic acids Chemical class 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- WPPDFTBPZNZZRP-UHFFFAOYSA-N aluminum copper Chemical compound [Al].[Cu] WPPDFTBPZNZZRP-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000012298 atmosphere Substances 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
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 229920001795 coordination polymer Polymers 0.000 description 1
- DQUIAMCJEJUUJC-UHFFFAOYSA-N dibismuth;dioxido(oxo)silane Chemical compound [Bi+3].[Bi+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O DQUIAMCJEJUUJC-UHFFFAOYSA-N 0.000 description 1
- 239000012972 dimethylethanolamine Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- OCQXPMSIMXSQGO-UHFFFAOYSA-N fluoro hypofluorite ruthenium Chemical compound O(F)F.[Ru] OCQXPMSIMXSQGO-UHFFFAOYSA-N 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000005660 hydrophilic surface Effects 0.000 description 1
- 230000005661 hydrophobic surface Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 229910003468 tantalcarbide Inorganic materials 0.000 description 1
- SITVSCPRJNYAGV-UHFFFAOYSA-L tellurite Chemical compound [O-][Te]([O-])=O SITVSCPRJNYAGV-UHFFFAOYSA-L 0.000 description 1
- DVUVKWLUHXXIHK-UHFFFAOYSA-N tetraazanium;tetrahydroxide Chemical compound [NH4+].[NH4+].[NH4+].[NH4+].[OH-].[OH-].[OH-].[OH-] DVUVKWLUHXXIHK-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/16—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions using inhibitors
- C23G1/18—Organic inhibitors
-
- 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
-
- 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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/0005—Other compounding ingredients characterised by their effect
- C11D3/0073—Anticorrosion compositions
-
- 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
-
- 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
- C11D7/265—Carboxylic acids or salts thereof
-
- 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
- C11D7/28—Organic compounds containing halogen
-
- 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
-
- 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
- C11D7/3218—Alkanolamines or alkanolimines
-
- 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
- H01L21/0206—Cleaning during device manufacture during, before or after processing of insulating layers
- H01L21/02063—Cleaning during device manufacture during, before or after processing of insulating layers the processing being the formation of vias or contact holes
-
- 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
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76802—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics
- H01L21/76814—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics post-treatment or after-treatment, e.g. cleaning or removal of oxides on underlying conductors
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
-
- 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
-
- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
- H01L21/67028—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like
- H01L21/6704—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing
-
- 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
- H01L21/67028—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like
- H01L21/6704—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing
- H01L21/67051—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing using mainly spraying means, e.g. nozzles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Inorganic Chemistry (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Detergent Compositions (AREA)
Description
201012921 六、發明說明: 【發明所屬之技術領域】 本發明係關於一種改良之清潔組合物,其包括第三有機 胺(特別之2-二曱胺基乙醇)、有機酸、非金屬含氟之鹽、 腐姓抑制劑(特別之抗壞血酸)以及水。此等組合物可包含 高濃度的氟離子’但對介電層包括低-κ材料之蝕刻極緩 慢。 X , 本申請案主張2008年7月25曰申請之美國專利第 61/13 5,943號之優先權利,該案之全文以引用的方式併入 本文中。 【先前技術】 本發明係關於一種在半導體器件製造期間用於後段製程 (BEOL)生產步驟的對於半導體基材表面之清潔組合物,特 別係該等使用銅作為導體及互連之半導體器件。在用於生 產最新半導體及半導體微電路之BE〇L製造步驟期間,銅 (Cu)係用於生產最新高密度器件。不同基材之表面姓刻係 -個在半導體器件之製造中用以建立電路的步驟。在此等 蝕刻過程之後,剩餘光阻(其包括沈積於待蝕刻基材上之 有機塗層)藉由濕/乾式剝除方法移除,—般稱為灰化。隨 後必須移除任何殘留之有機及無機污染殘留物,通常係 稱為側壁聚合物(SWP)。此__般由㈣後及灰化後殘 留物組成’例如聚合物、鹽、金屬污染物以及顆粒。需要 發展-種改良之清潔組合物,以在不腐姓、不溶解及不增 加金屬電路之電阻以及損壞現有之介電材料的情況下移除 141790.doc 201012921 SWP。 . * 7最流行之BE0L科技利用具有非常低的介電常數之 介電材科,稱4「低1介電質」。某些此等材料被設計成 實示上多孔的,其導致極度的化學敏感性,特別是對於氟 - 料H氟離子對於料清而言係—種有效的清潔 . ’组77 °因此有需要提供包含有效氟離子的溶液,其係調配 成使得此等組合物可用於從銅基材上及介電質移除各種不 • 同類型的殘留物,而不降低或破壞裝置。
Peters等人之美國專利第5,997,658號中揭示了包括水、 烷醇胺以及腐蝕抑制劑(其為苯並***、沒食子酸以及沒 食子酸酯申之一種)之清潔組合物。
Ward等人之美國專利第5,597,42〇號中揭示了一種無羥胺 化合物之清潔組合物,其主要由單乙醇胺及水連同腐蝕抑 制劑組成。該抑制劑較佳包括沒食子酸及其酯。
Schwartzkopf等人之美國專利第6 326 13〇號與第 9 6,749,"8號中揭示了包含用於還原金屬腐触之還原劑的光 阻剝離液。此專利教示抗壞血酸、沒食子酸以及焦掊酸之 用途,尤其疋用於控制在含有驗組分中的金屬腐银。
Satoh等人之美國專利第5,143 648號中揭示了作為抗氧 ' 化劑之新顆抗壞血酸衍生物。
Nagshineh等人之美國專利第6,627,587號中揭示了包括 單乙醇胺、氫氧化四烷銨、氟離子、抗壞血酸以及水之清 潔組合物。
Rovito等人之美國專利公開案第2〇〇4/〇266637 A1號中揭 141790.doc 201012921 示了水性蝕刻殘留移除劑以及包含氟且緩衝於pH 7〇至^1^ 11.0的清潔劑。 目前,已經證明可用之清潔組合物對銅以及低_κ介電質 有過度蝕刻速率,特別是具有相當多孔性的介電質。該蝕 刻速率可能在製作中對積體電路裝置造成損壞,使其無法 使用。 【發明内容】 已經發現一種合適的水性清潔組合物,其可消除或者實 質上減少銅腐蝕或介電侵蝕的弊端或缺點。 根據本發明之清潔組合物係由第三有機胺、有機酸、含 氟之鹽、有效量之腐蝕抑制劑、餘量之水組成,該組合物 具有8至9的pH。 根據本發明之清潔組合物具有高含水量(高達約8〇重量 /〇)’而產生可安全運輸、安全分配以及可容易地完成其之 安全處置的低成本清潔劑。 根據本發明之組合物具有超越先前技術組合物的以下優 勢,即,其: ⑷可用於清潔多種表面,包括金屬及介電質、疏水及親 水性表面; (b) 易於用水漂洗’通常未以有機溶劑進行任何中間漂 洗; (c) 不包括沒胺’其為—種廣泛使用但危險的微電子清潔 劑組分; (d) 基於水且不包含有機溶剤; 141790.doc 201012921 (e) 可在低操作溫度下使用,通常為約35〇c ; (f) 不易發生因從大氣吸附或其他方式存在之附隨水造成 ·' 的性能偏差; • (g)能用於在蝕刻及灰化後從微電子基材以及奈米結構移 除剩餘殘留物以及顆粒; (h) 具有低金屬蝕刻速率; (i) 與包括旋塗玻璃以及低-κ材料之介電質相容; ^ (j)可經製備成不含金屬離子;及 (k)不包含不需要的氣化及紛系組分,例如沒食子酸、焦 掊酸以及兒茶酚。 因此,一方面,本發明係一種清潔組合物,其包括約1〇 至20重量%的2-二曱胺基乙醇、約【至⑺重量%的乙酸、約 0.3至3.5重量%的氟離子;有效量之抗壞血酸腐蝕抑制劑 其為、餘量之去離子水。 另一方面,本發明係關於一種清潔半導體裝置之方法, ❷ It半導體裴置具有表面薄膜或蝕刻殘留物 ’該姓刻殘留物 包括有機金屬聚合物、無機鹽、氧化物、氫氧化物及其複 合物’或者其組合,該方法包括步驟:在溫度為“它至% ' °C之間的溫度下,時間為0.5分鐘至10分鐘,將半導體裝 - 置與清潔組合物接觸,該清潔組合物包含10至20重量%的 2-二曱胺基乙醇、約1至1〇重量%的乙酸、約〇3至35重量 %的氟離子、有效量之抗壞血酸腐蝕抑制劑、餘量之水, 在去離子水中漂洗半導體並乾燥此半導體裝置。 【實施方式】 141790.doc 201012921 根據本發月之由水、第三有機胺、乙酸及具有非金屬性 之含氟的鹽組成之清潔組合物,係藉由與有效量之腐钱抑 制劑(其為抗壞血酸或其衍生物之—種)混合而顯著改良。 抑制劑之較佳量為約〇5至5重量%。 第三有機胺較佳為㈣胺,且二甲胺基乙醇(DMEa) 最佳。胺之量較佳為約1〇至2〇重量%。 有機酸較佳為乙酸。有機酸的量較佳為1至10重量%。 乙酸對DMEA的比率以重量計較佳為約〗至3 ^ 較佳的含氟之鹽為四垸基錄氟化物、敗化錄以及二敗化 錄’氟化錢最佳。氟化物之濃度以敦化物計較佳為⑺至 3.5重量%。 餘量之組π物為水’較佳為去離子水。水之量較佳為約 65至80重量%。 調配物的pH值較佳為約ρΗ 8至pH 9之間。 本發明新穎清潔組合物顯示出明顯增強的腐蝕抑制作 用、低介電蝕刻率以及在低溫下之清潔能力、使用個別組 分或與其他清潔組分組合不可能達到之性質。第三胺、2_ 二甲基-氨基乙醇連同乙酸及抗壞血酸之組合尤其寸用於 產生極低之銅蝕刻率。 本發明清潔組合物提供有效清潔作用以及優異之銅腐蝕 保護性’且幾乎或者完全不侵蝕廣泛的各種介電質,例如 TEOS(原矽酸四乙醋)、i矽酸鹽玻璃(FSG)、有機石夕酸鹽 玻璃(OSG)、熱(矽)氧化物、氧化铪以及氧化鑭。 本發明水性清潔組合物由約10至20重量。/。的2_二曱胺基 141790.doc 201012921 乙醇與約1至10重量%的乙酸、約0.3至3.5重量%的氟離 子、約0.5至10重量%的腐姓抑制劑(較佳為抗壞血酸)、餘 量之水組合而組成。一種較佳之組合物使用1至5重量。/〇的 抗壞血酸。溶液的pH值較佳為約pH 8至約pH 9。 本發明方法係藉由使含有餘刻殘留物之基材與所述剝除 組合物接觸’接著漂洗並乾燥該基材而進行,該蝕刻殘留 物係包含金屬-有機聚合物、無機鹽、氧化物、氫氧化物 或其複合物或組合之薄膜或殘.留物(亦即,側壁聚合物 (S WP))。實際條件(亦即溫度、時間等等)取決於將被移除 之複合物材料(光阻殘留物及/或侧壁聚合物)的性質及厚 度、以及其他已為熟悉此項技術者所熟悉的因素。通常針 對触刻殘留物的移除,將器件浸入一個含有清潔組合物的 容器内’ 一般在20至50°c之間的溫度下持續約0.5分鐘至 1 〇分鐘,然後用水漂洗,之後用惰性氣體乾燥或者「旋轉 乾燥」。 電漿處理殘留物(侧壁聚合物)之實例特別包括金屬_有機 複合物及/或無機鹽、氧化物、氫氧化物或複合物,其等 或單獨或者與光阻之有機聚合樹脂組合形成薄膜或殘留 物。該等蝕刻殘留物及/或SWP可從熟悉此項技術者所知 之習知基材上移除,該等習知基材例如矽、二氧化矽氟 矽酸鹽玻璃(FSG)、硼磷矽玻璃(BPSG)、有機矽酸鹽玻璃 (OSG)、熱(碎)氧化物、氧化鈴、氧化鋼、銅、鎢、组、 鋁、碳化矽、氮化鈕、氮化鈥及諸如此類者。 本發明組合物的濃縮物可藉由減少上述之組合物中水的 141790.doc 201012921 百分比來製備。所得到的濃縮物稍後可用必要量的水稀釋 以生產所需要之清潔組合物。 下列實例闡釋文中所述之本發明。 實例1 從多層介電層移除光阻灰化殘留物 藉由將75 g水、15 g 2-二曱胺基乙醇、5 g冰醋酸、5 g 氟化銨以及1 g抗壞血酸混合來製備較佳之組合物A。 使用原矽酸四乙酯(TEOS)沈積700 nm之介電層,覆以 200 nm氮化矽覆蓋,隨後覆以另一 165〇 nm之介電質(來自 TEOS)。使用光阻以1_2微米正方形圖案使此等層成像,然 後藉由反應性離子蝕刻(RIE)進行圖案轉移。之後,大部 份光阻藉由使用氧電漿灰化而移除。圖1為在清潔之前的 得到形成圖形的掃描電子顯微鏡(SEM)照片。圖2為此圖形 在室溫下用組合物A清潔45秒後的SEM照片。在對介電質 沒有任何損壞的情況下,方格背面的光阻已經完全移除。 實例2 從銘線及間隔中移除光阻灰化殘留物 沈積10 nm之氮化矽鈦層且覆以11 nm之鈦,之後為700 nm的銘銅合金。使用光阻以具有約〇 7微米線及間隔的圖 案成像’然後藉由RIE進行圖案轉移。之後,藉由用氧電 聚灰化而移除大部份光阻。圖3為在清潔之前得到形成之 圖形的掃描電子顯微鏡(SEM)照片。在金屬線上出現閃亮 的上緣之暗示此表面受到光阻灰化殘留物所污染。圖4為 此圖形在室溫下用組合物A清潔90秒後的SEM照片(橫截面 141790.doc 201012921 之後)。在對金屬沒有任何損壞的情況下,完全移除金屬 線頂部之光阻灰化殘留物。 實例3 在氟梦酸鹽玻璃中舆高厚徑比通孔的相容性 α 用0.65微米之氟矽酸玻璃(FSG)塗覆晶圓’之後成像、 圖案轉移及移除光阻,產生多個65微米通孔。圖5為形成 之高厚徑比通孔之剖面掃描電子顯微鏡(SEM)照片。圖6為 在高溫40°C下用組合物A處理60秒後的SEM照片(在截面之 後)。此等敏感小型圖形之尺寸及外觀完全不受組合物A所 影響,表示與FSG介電質之相容性高。在另一種敏感性介 電質有機矽酸鹽玻璃(OSG)中之65 nm通孔獲得類似的結 果。 實例4 與介電質及金屬的相容性 以各種重要之微電子材料測定組合物A之蝕刻速率。此 等速率一致性地低且對於介電材料異常低。結果列在在表 I中。 141790.doc 11· 201012921 表i 材料 測試溫度(°C) 蝕刻速率 (A/min) 蝕刻速率測定方法 銅 35-45 <0.5 純金屬箔重量分析 钽 35-45 <0.2 純金屬重量分析 鋁 35-45 3 純金屬箔重量分析 碳化矽 40-45 0 橢圓分析 氮化鈦 45 0 橢圓分析 氮化鈕 45 0 橢圓分析 熱(石夕)氧化物 45 0.3 橢圓分析 TEOS衍生介電質 30 0 橢圓分析 氧化铪 45 0 橢圓分析 氧化鑭 45 0.3 橢圓分析 可在不偏離以下申請專利範圍所定義之本發明精神及範 圍下,針對文中所述之本發明進行各種改變及/或修飾。 因此,所描述之期望美國專利特許保護的本發明係列於 所附申請專利範圍。 【圖式簡單說明】 圖1為使用原矽酸四乙酯沈積之介電層在成像、圖案轉 移、隨之藉氧電漿灰化移除光阻後的掃描式電子顯微 (SEM)照片; 圖2為圖1之圖案在以本發明組合物清潔後的SEM照片; 圖3為鋁-銅層在成像、圖案轉移、隨之藉氧電漿灰化移 除光阻後的SEM照片; 圖4為圖3之圖案在以本發明組合物清潔後的SEM照片; 141790.doc •12· 201012921 圖5為氟矽酸鹽(FSG)層經圖案化產生多個65 nm通孔之 SEM照片;及 ' 圖6為圖5之通孔圖案在以本發明組合物清潔後SEM照 ' 片。 141790.doc -13·
Claims (1)
- 201012921 七、申請專利範圍: 1. 一種清潔組合物,其包括第三有機胺、有機酸、含氟之 ' 鹽:有效量之腐蝕抑制劑、餘量之水,其中該組合物的 ρ Η 為約 p 8 至 p Η 9。 .2. #請求項i之清潔組合物,其中該腐餘抑制劑為以約 至5重量%之量存在的抗壞血酸。 • 3.如請求項!之清潔組合物,#中該第三有機胺為2二甲胺 基乙醇且係以約10至20重量%之量存在。 • 4·如請求们之清潔组合物,其中該有機酸為以約重 量%之量存在的醋酸。 5·如請求項1之清潔組合物,纟中該含氧之鹽為氣化錄, 其中該組合物包含〇.3至35重量%的氟離子。 6. 如請求項2之清潔組合物,其基本上由約10至2〇重量%的 2_二甲胺基乙醇、約1至10重量❶/〇的醋酸、約〇_3至3 5重 量%的氟離子、約〇·5至5重量%的抗壞血酸、及餘量之去 離子水所組成。 編 7. 如請求項6之清潔組合物,其基本上由約。重量%的2_二 甲胺基乙醇、約5重量%的醋酸、約5重量%的氟化銨、 . 約1重量%的抗壞血酸、及餘量之去離子水所組成。 ,8. 一種清潔半導體器件之方法,該半導體器件具有呈薄膜 或者殘留物形式之金屬有機聚合物、無機鹽、氧化物、 氫氧化物、及/或其複合物或組合,其包括以下步驟·· 製備pH值在8與9之間的清潔組合物,其包括第三有機 胺有機酸、含氣之鹽、有效量之腐蚀抑制劑、餘量之 141790.doc 201012921 水; 使該半導體器件與該清潔組合物在20°C至50°C之間的 溫度下接觸0.5分鐘至60分鐘之間的一段時間; 在去離子水中漂洗該半導體器件;及 乾燥該半導體器件。 9. 如請求項8之方法,其包括製備含〇.5至5重量%醋酸之組 合物的步驟。 10. —種清潔半導體器件之方法,該半導體器件具有呈薄膜 或者殘留物形式之金屬有機聚合物、無機鹽、氧化物、· 氫氧化物、及/或其複合物或組合,其包括以下步驟: 製備pH值在8與9之間的清潔組合物,其包括1〇至2〇重 量%的第三有機胺、1至重量❾/❶的醋酸、0_3至3.5重量% 的氟化物、0.5至5重量%的抗壞血酸、餘量之水; 使該半導體器件與該清潔組合物在2〇t>c至耽之間的 溫度下接觸; 在去離子水中漂洗該半導體器件;及 乾燥該半導體器件。 141790.doc
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Application Number | Title | Priority Date | Filing Date |
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TW098124762A TW201012921A (en) | 2008-07-25 | 2009-07-22 | Cleaning compositions with very low dielectric etch rates |
Country Status (3)
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US (1) | US20100018550A1 (zh) |
KR (1) | KR101132084B1 (zh) |
TW (1) | TW201012921A (zh) |
Families Citing this family (5)
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KR102175313B1 (ko) | 2013-09-24 | 2020-11-09 | 삼성디스플레이 주식회사 | 식각액 조성물, 및 이를 이용한 금속 배선과 박막 트랜지스터 기판 형성 방법 |
TWI585698B (zh) * | 2016-02-26 | 2017-06-01 | Item recycling method | |
US9954176B1 (en) | 2016-10-06 | 2018-04-24 | International Business Machines Corporation | Dielectric treatments for carbon nanotube devices |
CN109338386A (zh) * | 2018-11-07 | 2019-02-15 | 长沙小如信息科技有限公司 | 铝质产品表面清洗工艺 |
US10848836B2 (en) | 2018-12-28 | 2020-11-24 | Dish Network L.L.C. | Wager information based prioritized live event display system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US5968848A (en) * | 1996-12-27 | 1999-10-19 | Tokyo Ohka Kogyo Co., Ltd. | Process for treating a lithographic substrate and a rinse solution for the treatment |
US6627587B2 (en) * | 2001-04-19 | 2003-09-30 | Esc Inc. | Cleaning compositions |
JP4456424B2 (ja) * | 2004-06-29 | 2010-04-28 | 関東化学株式会社 | フォトレジスト残渣及びポリマー残渣除去組成物 |
US7682458B2 (en) * | 2005-02-03 | 2010-03-23 | Air Products And Chemicals, Inc. | Aqueous based residue removers comprising fluoride |
CN101228481B (zh) * | 2005-02-25 | 2012-12-05 | Ekc技术公司 | 从包括铜和低k电介体的基片上除去抗蚀剂、蚀刻残余物和氧化铜的方法 |
KR100706822B1 (ko) | 2005-10-17 | 2007-04-12 | 삼성전자주식회사 | 절연 물질 제거용 조성물, 이를 이용한 절연막의 제거 방법및 기판의 재생 방법 |
US20070225186A1 (en) | 2006-03-27 | 2007-09-27 | Matthew Fisher | Alkaline solutions for post CMP cleaning processes |
-
2009
- 2009-07-20 US US12/505,690 patent/US20100018550A1/en not_active Abandoned
- 2009-07-22 TW TW098124762A patent/TW201012921A/zh unknown
- 2009-07-24 KR KR1020090067758A patent/KR101132084B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR20100011950A (ko) | 2010-02-03 |
US20100018550A1 (en) | 2010-01-28 |
KR101132084B1 (ko) | 2012-04-02 |
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