WO2016076034A1 - 半導体素子を洗浄するためのアルカリ土類金属を含む洗浄液、およびそれを用いた半導体素子の洗浄方法 - Google Patents
半導体素子を洗浄するためのアルカリ土類金属を含む洗浄液、およびそれを用いた半導体素子の洗浄方法 Download PDFInfo
- Publication number
- WO2016076034A1 WO2016076034A1 PCT/JP2015/078078 JP2015078078W WO2016076034A1 WO 2016076034 A1 WO2016076034 A1 WO 2016076034A1 JP 2015078078 W JP2015078078 W JP 2015078078W WO 2016076034 A1 WO2016076034 A1 WO 2016076034A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- perchlorate
- film
- material containing
- tungsten
- cleaning liquid
- Prior art date
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 348
- 239000004065 semiconductor Substances 0.000 title claims abstract description 144
- 238000000034 method Methods 0.000 title claims description 39
- 229910052784 alkaline earth metal Inorganic materials 0.000 title description 4
- 150000001342 alkaline earth metals Chemical class 0.000 title description 3
- 239000000463 material Substances 0.000 claims abstract description 307
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 184
- 239000010937 tungsten Substances 0.000 claims abstract description 184
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 181
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 162
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 161
- 239000010936 titanium Substances 0.000 claims abstract description 161
- 238000001312 dry etching Methods 0.000 claims abstract description 157
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000007800 oxidant agent Substances 0.000 claims abstract description 17
- 150000001341 alkaline earth metal compounds Chemical class 0.000 claims abstract description 15
- 150000002978 peroxides Chemical class 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 146
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical group OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 46
- -1 tungsten nitride Chemical class 0.000 claims description 16
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 claims description 14
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 claims description 11
- NHQDETIJWKXCTC-UHFFFAOYSA-N 3-chloroperbenzoic acid Chemical compound OOC(=O)C1=CC=CC(Cl)=C1 NHQDETIJWKXCTC-UHFFFAOYSA-N 0.000 claims description 6
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims description 6
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 6
- LULAYUGMBFYYEX-UHFFFAOYSA-N metachloroperbenzoic acid Natural products OC(=O)C1=CC=CC(Cl)=C1 LULAYUGMBFYYEX-UHFFFAOYSA-N 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 claims description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 5
- 229910001930 tungsten oxide Inorganic materials 0.000 claims description 5
- GDDNTTHUKVNJRA-UHFFFAOYSA-N 3-bromo-3,3-difluoroprop-1-ene Chemical group FC(F)(Br)C=C GDDNTTHUKVNJRA-UHFFFAOYSA-N 0.000 claims description 4
- LLJWABOOFANACB-UHFFFAOYSA-N 1-chloro-1,1,3,3,3-pentafluoropropane Chemical compound FC(F)(F)CC(F)(F)Cl LLJWABOOFANACB-UHFFFAOYSA-N 0.000 claims description 3
- WHQOKFZWSDOTQP-UHFFFAOYSA-N 2,3-dihydroxypropyl 4-aminobenzoate Chemical compound NC1=CC=C(C(=O)OCC(O)CO)C=C1 WHQOKFZWSDOTQP-UHFFFAOYSA-N 0.000 claims description 3
- SHIQLFRCVFUYEK-UHFFFAOYSA-M 2-acetyloxyethyl(trimethyl)azanium;perchlorate Chemical compound [O-]Cl(=O)(=O)=O.CC(=O)OCC[N+](C)(C)C SHIQLFRCVFUYEK-UHFFFAOYSA-M 0.000 claims description 3
- WFUGQJXVXHBTEM-UHFFFAOYSA-N 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane Chemical compound CCC(C)(OO)OOC(C)(CC)OO WFUGQJXVXHBTEM-UHFFFAOYSA-N 0.000 claims description 3
- FRIBMENBGGCKPD-UHFFFAOYSA-N 3-(2,3-dimethoxyphenyl)prop-2-enal Chemical compound COC1=CC=CC(C=CC=O)=C1OC FRIBMENBGGCKPD-UHFFFAOYSA-N 0.000 claims description 3
- RBWNDBNSJFCLBZ-UHFFFAOYSA-N 7-methyl-5,6,7,8-tetrahydro-3h-[1]benzothiolo[2,3-d]pyrimidine-4-thione Chemical compound N1=CNC(=S)C2=C1SC1=C2CCC(C)C1 RBWNDBNSJFCLBZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 3
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 3
- MPCRDALPQLDDFX-UHFFFAOYSA-L Magnesium perchlorate Chemical compound [Mg+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O MPCRDALPQLDDFX-UHFFFAOYSA-L 0.000 claims description 3
- 239000000011 acetone peroxide Substances 0.000 claims description 3
- 235000019401 acetone peroxide Nutrition 0.000 claims description 3
- 150000001553 barium compounds Chemical class 0.000 claims description 3
- OOULUYZFLXDWDQ-UHFFFAOYSA-L barium perchlorate Chemical compound [Ba+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O OOULUYZFLXDWDQ-UHFFFAOYSA-L 0.000 claims description 3
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 3
- PSIBWKDABMPMJN-UHFFFAOYSA-L cadmium(2+);diperchlorate Chemical compound [Cd+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O PSIBWKDABMPMJN-UHFFFAOYSA-L 0.000 claims description 3
- WKDKOOITVYKILI-UHFFFAOYSA-M caesium perchlorate Chemical compound [Cs+].[O-]Cl(=O)(=O)=O WKDKOOITVYKILI-UHFFFAOYSA-M 0.000 claims description 3
- 229940043430 calcium compound Drugs 0.000 claims description 3
- 150000001674 calcium compounds Chemical class 0.000 claims description 3
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 claims description 3
- TWFKOYFJBHUHCH-UHFFFAOYSA-K diperchloryloxyindiganyl perchlorate Chemical compound [In+3].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O TWFKOYFJBHUHCH-UHFFFAOYSA-K 0.000 claims description 3
- XOYUVEPYBYHIFZ-UHFFFAOYSA-L diperchloryloxylead Chemical compound [Pb+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O XOYUVEPYBYHIFZ-UHFFFAOYSA-L 0.000 claims description 3
- AXZAYXJCENRGIM-UHFFFAOYSA-J dipotassium;tetrabromoplatinum(2-) Chemical compound [K+].[K+].[Br-].[Br-].[Br-].[Br-].[Pt+2] AXZAYXJCENRGIM-UHFFFAOYSA-J 0.000 claims description 3
- LHOWRPZTCLUDOI-UHFFFAOYSA-K iron(3+);triperchlorate Chemical compound [Fe+3].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O LHOWRPZTCLUDOI-UHFFFAOYSA-K 0.000 claims description 3
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 claims description 3
- 229910001486 lithium perchlorate Inorganic materials 0.000 claims description 3
- XMMDVXFQGOEOKH-UHFFFAOYSA-N n'-dodecylpropane-1,3-diamine Chemical compound CCCCCCCCCCCCNCCCN XMMDVXFQGOEOKH-UHFFFAOYSA-N 0.000 claims description 3
- 229910001487 potassium perchlorate Inorganic materials 0.000 claims description 3
- 229910001489 rubidium perchlorate Inorganic materials 0.000 claims description 3
- 150000003438 strontium compounds Chemical class 0.000 claims description 3
- MXRFIUHRIOLIIV-UHFFFAOYSA-L strontium;diperchlorate Chemical compound [Sr+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O MXRFIUHRIOLIIV-UHFFFAOYSA-L 0.000 claims description 3
- 229910021341 titanium silicide Inorganic materials 0.000 claims description 3
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 claims description 3
- 229910021342 tungsten silicide Inorganic materials 0.000 claims description 3
- AQLJVWUFPCUVLO-UHFFFAOYSA-N urea hydrogen peroxide Chemical compound OO.NC(N)=O AQLJVWUFPCUVLO-UHFFFAOYSA-N 0.000 claims description 3
- ZRGUXTGDSGGHLR-UHFFFAOYSA-K aluminum;triperchlorate Chemical compound [Al+3].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O ZRGUXTGDSGGHLR-UHFFFAOYSA-K 0.000 claims description 2
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 claims description 2
- BAZAXWOYCMUHIX-UHFFFAOYSA-M sodium perchlorate Chemical compound [Na+].[O-]Cl(=O)(=O)=O BAZAXWOYCMUHIX-UHFFFAOYSA-M 0.000 claims description 2
- 229910001488 sodium perchlorate Inorganic materials 0.000 claims description 2
- KBLZDCFTQSIIOH-UHFFFAOYSA-M tetrabutylazanium;perchlorate Chemical compound [O-]Cl(=O)(=O)=O.CCCC[N+](CCCC)(CCCC)CCCC KBLZDCFTQSIIOH-UHFFFAOYSA-M 0.000 claims description 2
- MCYSFVUDODFQPV-UHFFFAOYSA-K lanthanum(3+) trichlorate Chemical compound [La+3].[O-][Cl](=O)=O.[O-][Cl](=O)=O.[O-][Cl](=O)=O MCYSFVUDODFQPV-UHFFFAOYSA-K 0.000 claims 1
- SEWWYFKNCDCKIU-UHFFFAOYSA-N perchloric acid;zinc Chemical compound [Zn].OCl(=O)(=O)=O SEWWYFKNCDCKIU-UHFFFAOYSA-N 0.000 claims 1
- 229920002120 photoresistant polymer Polymers 0.000 abstract description 48
- 239000010408 film Substances 0.000 description 201
- 239000000243 solution Substances 0.000 description 115
- 229910052802 copper Inorganic materials 0.000 description 72
- 239000010949 copper Substances 0.000 description 72
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 71
- 230000000052 comparative effect Effects 0.000 description 65
- 238000004519 manufacturing process Methods 0.000 description 37
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 36
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 32
- 238000011156 evaluation Methods 0.000 description 26
- 229910000881 Cu alloy Inorganic materials 0.000 description 23
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 21
- 230000015572 biosynthetic process Effects 0.000 description 20
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Chemical compound [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 18
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 15
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 14
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 13
- 239000002184 metal Substances 0.000 description 13
- 235000011118 potassium hydroxide Nutrition 0.000 description 12
- 229910045601 alloy Inorganic materials 0.000 description 11
- 239000000956 alloy Substances 0.000 description 11
- 230000004888 barrier function Effects 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- 239000003960 organic solvent Substances 0.000 description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 9
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 8
- 238000005406 washing Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 235000011121 sodium hydroxide Nutrition 0.000 description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 6
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 6
- 238000005530 etching Methods 0.000 description 6
- 238000007654 immersion Methods 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000004544 sputter deposition Methods 0.000 description 6
- 239000004094 surface-active agent Substances 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 5
- 239000003513 alkali Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 239000011229 interlayer Substances 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 4
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 4
- ZNBNBTIDJSKEAM-UHFFFAOYSA-N 4-[7-hydroxy-2-[5-[5-[6-hydroxy-6-(hydroxymethyl)-3,5-dimethyloxan-2-yl]-3-methyloxolan-2-yl]-5-methyloxolan-2-yl]-2,8-dimethyl-1,10-dioxaspiro[4.5]decan-9-yl]-2-methyl-3-propanoyloxypentanoic acid Chemical compound C1C(O)C(C)C(C(C)C(OC(=O)CC)C(C)C(O)=O)OC11OC(C)(C2OC(C)(CC2)C2C(CC(O2)C2C(CC(C)C(O)(CO)O2)C)C)CC1 ZNBNBTIDJSKEAM-UHFFFAOYSA-N 0.000 description 4
- 229920001174 Diethylhydroxylamine Polymers 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000000908 ammonium hydroxide Substances 0.000 description 4
- HUCVOHYBFXVBRW-UHFFFAOYSA-M caesium hydroxide Inorganic materials [OH-].[Cs+] HUCVOHYBFXVBRW-UHFFFAOYSA-M 0.000 description 4
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 4
- FVCOIAYSJZGECG-UHFFFAOYSA-N diethylhydroxylamine Chemical compound CCN(O)CC FVCOIAYSJZGECG-UHFFFAOYSA-N 0.000 description 4
- 229910000378 hydroxylammonium sulfate Inorganic materials 0.000 description 4
- 150000002894 organic compounds Chemical class 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 125000001453 quaternary ammonium group Chemical group 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- 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 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 3
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 3
- 229910001626 barium chloride Inorganic materials 0.000 description 3
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 description 3
- 229910001863 barium hydroxide Inorganic materials 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 150000007524 organic acids Chemical class 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- 229910001631 strontium chloride Inorganic materials 0.000 description 3
- AHBGXTDRMVNFER-UHFFFAOYSA-L strontium dichloride Chemical compound [Cl-].[Cl-].[Sr+2] AHBGXTDRMVNFER-UHFFFAOYSA-L 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- VASZYFIKPKYGNC-DHTOPLTISA-N 2-[[(1r,2r)-2-[bis(carboxymethyl)amino]cyclohexyl]-(carboxymethyl)amino]acetic acid;hydrate Chemical compound O.OC(=O)CN(CC(O)=O)[C@@H]1CCCC[C@H]1N(CC(O)=O)CC(O)=O VASZYFIKPKYGNC-DHTOPLTISA-N 0.000 description 2
- MFGOFGRYDNHJTA-UHFFFAOYSA-N 2-amino-1-(2-fluorophenyl)ethanol Chemical compound NCC(O)C1=CC=CC=C1F MFGOFGRYDNHJTA-UHFFFAOYSA-N 0.000 description 2
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 2
- ULKLGIFJWFIQFF-UHFFFAOYSA-N 5K8XI641G3 Chemical compound CCC1=NC=C(C)N1 ULKLGIFJWFIQFF-UHFFFAOYSA-N 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 2
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 2
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 241000282320 Panthera leo Species 0.000 description 2
- WTKZEGDFNFYCGP-UHFFFAOYSA-N Pyrazole Chemical compound C=1C=NNC=1 WTKZEGDFNFYCGP-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 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
- WPPDFTBPZNZZRP-UHFFFAOYSA-N aluminum copper Chemical compound [Al].[Cu] WPPDFTBPZNZZRP-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000001099 ammonium carbonate Substances 0.000 description 2
- 235000012501 ammonium carbonate Nutrition 0.000 description 2
- MTHSVFCYNBDYFN-UHFFFAOYSA-N anhydrous diethylene glycol Natural products OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 2
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 2
- 239000012964 benzotriazole Substances 0.000 description 2
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- HPDFFVBPXCTEDN-UHFFFAOYSA-N copper manganese Chemical compound [Mn].[Cu] HPDFFVBPXCTEDN-UHFFFAOYSA-N 0.000 description 2
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 2
- IUYOGGFTLHZHEG-UHFFFAOYSA-N copper titanium Chemical compound [Ti].[Cu] IUYOGGFTLHZHEG-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 2
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002222 fluorine compounds Chemical class 0.000 description 2
- 239000000174 gluconic acid Substances 0.000 description 2
- 235000012208 gluconic acid Nutrition 0.000 description 2
- 150000002443 hydroxylamines Chemical class 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- MYGVQOYLIMJKKU-UHFFFAOYSA-K lanthanum(3+);triperchlorate Chemical compound [La+3].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O MYGVQOYLIMJKKU-UHFFFAOYSA-K 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 239000003002 pH adjusting agent Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 235000011181 potassium carbonates Nutrition 0.000 description 2
- XXQBEVHPUKOQEO-UHFFFAOYSA-N potassium superoxide Chemical compound [K+].[K+].[O-][O-] XXQBEVHPUKOQEO-UHFFFAOYSA-N 0.000 description 2
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000000600 sorbitol Substances 0.000 description 2
- DHEQXMRUPNDRPG-UHFFFAOYSA-N strontium nitrate Chemical compound [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O DHEQXMRUPNDRPG-UHFFFAOYSA-N 0.000 description 2
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Chemical compound [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 description 2
- UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Chemical compound [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 description 2
- 229940073455 tetraethylammonium hydroxide Drugs 0.000 description 2
- LRGJRHZIDJQFCL-UHFFFAOYSA-M tetraethylazanium;hydroxide Chemical compound [OH-].CC[N+](CC)(CC)CC LRGJRHZIDJQFCL-UHFFFAOYSA-M 0.000 description 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
- 229910021642 ultra pure water Inorganic materials 0.000 description 2
- 239000012498 ultrapure water Substances 0.000 description 2
- RXBXBWBHKPGHIB-UHFFFAOYSA-L zinc;diperchlorate Chemical compound [Zn+2].[O-]Cl(=O)(=O)=O.[O-]Cl(=O)(=O)=O RXBXBWBHKPGHIB-UHFFFAOYSA-L 0.000 description 2
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 description 1
- OSSNTDFYBPYIEC-UHFFFAOYSA-N 1-ethenylimidazole Chemical compound C=CN1C=CN=C1 OSSNTDFYBPYIEC-UHFFFAOYSA-N 0.000 description 1
- KKFDCBRMNNSAAW-UHFFFAOYSA-N 2-(morpholin-4-yl)ethanol Chemical compound OCCN1CCOCC1 KKFDCBRMNNSAAW-UHFFFAOYSA-N 0.000 description 1
- LXBGSDVWAMZHDD-UHFFFAOYSA-N 2-methyl-1h-imidazole Chemical compound CC1=NC=CN1 LXBGSDVWAMZHDD-UHFFFAOYSA-N 0.000 description 1
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- NSPMIYGKQJPBQR-UHFFFAOYSA-N 4H-1,2,4-triazole Chemical compound C=1N=CNN=1 NSPMIYGKQJPBQR-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- KLSJWNVTNUYHDU-UHFFFAOYSA-N Amitrole Chemical compound NC1=NC=NN1 KLSJWNVTNUYHDU-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 description 1
- 239000005695 Ammonium acetate Substances 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- UNMYWSMUMWPJLR-UHFFFAOYSA-L Calcium iodide Chemical compound [Ca+2].[I-].[I-] UNMYWSMUMWPJLR-UHFFFAOYSA-L 0.000 description 1
- 239000004343 Calcium peroxide Substances 0.000 description 1
- 244000132059 Carica parviflora Species 0.000 description 1
- 235000014653 Carica parviflora Nutrition 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- FCKYPQBAHLOOJQ-UHFFFAOYSA-N Cyclohexane-1,2-diaminetetraacetic acid Chemical compound OC(=O)CN(CC(O)=O)C1CCCCC1N(CC(O)=O)CC(O)=O FCKYPQBAHLOOJQ-UHFFFAOYSA-N 0.000 description 1
- 239000004471 Glycine Substances 0.000 description 1
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 1
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- SPAGIJMPHSUYSE-UHFFFAOYSA-N Magnesium peroxide Chemical compound [Mg+2].[O-][O-] SPAGIJMPHSUYSE-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 description 1
- MHZDPHLNZSQJMO-UHFFFAOYSA-N [Na].CCCCCCCCCCCCN(CC(N)N)CC(O)=O Chemical compound [Na].CCCCCCCCCCCCN(CC(N)N)CC(O)=O MHZDPHLNZSQJMO-UHFFFAOYSA-N 0.000 description 1
- JUZTWRXHHZRLED-UHFFFAOYSA-N [Si].[Cu].[Cu].[Cu].[Cu].[Cu] Chemical compound [Si].[Cu].[Cu].[Cu].[Cu].[Cu] JUZTWRXHHZRLED-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 235000004279 alanine Nutrition 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 235000019257 ammonium acetate Nutrition 0.000 description 1
- 229940043376 ammonium acetate Drugs 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 239000005441 aurora Substances 0.000 description 1
- ITHZDDVSAWDQPZ-UHFFFAOYSA-L barium acetate Chemical compound [Ba+2].CC([O-])=O.CC([O-])=O ITHZDDVSAWDQPZ-UHFFFAOYSA-L 0.000 description 1
- NKQIMNKPSDEDMO-UHFFFAOYSA-L barium bromide Chemical compound [Br-].[Br-].[Ba+2] NKQIMNKPSDEDMO-UHFFFAOYSA-L 0.000 description 1
- 229910001620 barium bromide Inorganic materials 0.000 description 1
- OYLGJCQECKOTOL-UHFFFAOYSA-L barium fluoride Chemical compound [F-].[F-].[Ba+2] OYLGJCQECKOTOL-UHFFFAOYSA-L 0.000 description 1
- 229910001632 barium fluoride Inorganic materials 0.000 description 1
- SGUXGJPBTNFBAD-UHFFFAOYSA-L barium iodide Chemical compound [I-].[I-].[Ba+2] SGUXGJPBTNFBAD-UHFFFAOYSA-L 0.000 description 1
- 229910001638 barium iodide Inorganic materials 0.000 description 1
- 229940075444 barium iodide Drugs 0.000 description 1
- ZJRXSAYFZMGQFP-UHFFFAOYSA-N barium peroxide Chemical compound [Ba+2].[O-][O-] ZJRXSAYFZMGQFP-UHFFFAOYSA-N 0.000 description 1
- WAKZZMMCDILMEF-UHFFFAOYSA-H barium(2+);diphosphate Chemical compound [Ba+2].[Ba+2].[Ba+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O WAKZZMMCDILMEF-UHFFFAOYSA-H 0.000 description 1
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- NDKBVBUGCNGSJJ-UHFFFAOYSA-M benzyltrimethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)CC1=CC=CC=C1 NDKBVBUGCNGSJJ-UHFFFAOYSA-M 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- NZUYJPMKCSBVLS-UHFFFAOYSA-N cadmium;hydrogen peroxide Chemical compound [Cd].OO NZUYJPMKCSBVLS-UHFFFAOYSA-N 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- VSGNNIFQASZAOI-UHFFFAOYSA-L calcium acetate Chemical compound [Ca+2].CC([O-])=O.CC([O-])=O VSGNNIFQASZAOI-UHFFFAOYSA-L 0.000 description 1
- 239000001639 calcium acetate Substances 0.000 description 1
- 235000011092 calcium acetate Nutrition 0.000 description 1
- 229960005147 calcium acetate Drugs 0.000 description 1
- 229910001622 calcium bromide Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- WGEFECGEFUFIQW-UHFFFAOYSA-L calcium dibromide Chemical compound [Ca+2].[Br-].[Br-] WGEFECGEFUFIQW-UHFFFAOYSA-L 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 229910001640 calcium iodide Inorganic materials 0.000 description 1
- 229940046413 calcium iodide Drugs 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- LHJQIRIGXXHNLA-UHFFFAOYSA-N calcium peroxide Chemical compound [Ca+2].[O-][O-] LHJQIRIGXXHNLA-UHFFFAOYSA-N 0.000 description 1
- 235000019402 calcium peroxide Nutrition 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- RYTYSMSQNNBZDP-UHFFFAOYSA-N cobalt copper Chemical compound [Co].[Cu] RYTYSMSQNNBZDP-UHFFFAOYSA-N 0.000 description 1
- QRJOYPHTNNOAOJ-UHFFFAOYSA-N copper gold Chemical compound [Cu].[Au] QRJOYPHTNNOAOJ-UHFFFAOYSA-N 0.000 description 1
- 229910021360 copper silicide Inorganic materials 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 150000004820 halides Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- BDAGIHXWWSANSR-NJFSPNSNSA-N hydroxyformaldehyde Chemical compound O[14CH]=O BDAGIHXWWSANSR-NJFSPNSNSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000007529 inorganic bases Chemical class 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- HPGPEWYJWRWDTP-UHFFFAOYSA-N lithium peroxide Chemical compound [Li+].[Li+].[O-][O-] HPGPEWYJWRWDTP-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229960004995 magnesium peroxide Drugs 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 235000011056 potassium acetate Nutrition 0.000 description 1
- 229910000160 potassium phosphate Inorganic materials 0.000 description 1
- 235000011009 potassium phosphates Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- YJPVTCSBVRMESK-UHFFFAOYSA-L strontium bromide Chemical compound [Br-].[Br-].[Sr+2] YJPVTCSBVRMESK-UHFFFAOYSA-L 0.000 description 1
- 229910001625 strontium bromide Inorganic materials 0.000 description 1
- 229940074155 strontium bromide Drugs 0.000 description 1
- 229910000018 strontium carbonate Inorganic materials 0.000 description 1
- FVRNDBHWWSPNOM-UHFFFAOYSA-L strontium fluoride Chemical compound [F-].[F-].[Sr+2] FVRNDBHWWSPNOM-UHFFFAOYSA-L 0.000 description 1
- 229910001637 strontium fluoride Inorganic materials 0.000 description 1
- UHCGLDSRFKGERO-UHFFFAOYSA-N strontium peroxide Chemical compound [Sr+2].[O-][O-] UHCGLDSRFKGERO-UHFFFAOYSA-N 0.000 description 1
- RXSHXLOMRZJCLB-UHFFFAOYSA-L strontium;diacetate Chemical compound [Sr+2].CC([O-])=O.CC([O-])=O RXSHXLOMRZJCLB-UHFFFAOYSA-L 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- MAKDTFFYCIMFQP-UHFFFAOYSA-N titanium tungsten Chemical compound [Ti].[W] MAKDTFFYCIMFQP-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- ZMANZCXQSJIPKH-UHFFFAOYSA-O triethylammonium ion Chemical compound CC[NH+](CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-O 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- JOPDZQBPOWAEHC-UHFFFAOYSA-H tristrontium;diphosphate Chemical compound [Sr+2].[Sr+2].[Sr+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O JOPDZQBPOWAEHC-UHFFFAOYSA-H 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- C11D7/105—Nitrates; Nitrites
-
- 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
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/08—Liquid soap, e.g. for dispensers; capsuled
-
- 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
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/046—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
- C11D7/02—Inorganic compounds
-
- 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
-
- 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
- G03F7/423—Stripping or agents therefor using liquids only containing mineral acids or salts thereof, containing mineral oxidizing substances, e.g. peroxy compounds
-
- 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
- H01L21/02043—Cleaning before device manufacture, i.e. Begin-Of-Line process
- H01L21/02052—Wet cleaning only
-
- 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
- H01L21/04—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
-
- 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
- H01L21/02—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
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
- H01L21/31116—Etching inorganic layers by chemical means by dry-etching
-
- 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
- H01L21/31144—Etching the insulating layers by chemical or physical means using masks
-
- 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
Definitions
- the present invention suppresses at least one damage selected from a low dielectric constant interlayer insulating film, a material containing titanium and a material containing tungsten in a manufacturing process of a semiconductor element, and a dry etching residue on a surface of an object to be processed and
- the present invention relates to a cleaning liquid for removing a photoresist and a cleaning method using the same.
- a conductive thin film such as a metal film as a conductive wiring material or an interlayer insulating film for insulation between conductive thin films is usually formed on a device such as a silicon wafer.
- a photoresist is uniformly applied to the surface to provide a photosensitive layer, and a selective exposure / development process is performed thereon to produce a desired photoresist pattern.
- the interlayer insulating film is dry-etched to form a desired pattern on the thin film.
- a series of steps are generally taken to completely remove the photoresist pattern and the residue generated by the dry etching process (hereinafter referred to as “dry etching residue”) by ashing using oxygen plasma or a cleaning solution. Yes.
- the conductive wiring material is shifted from aluminum to copper having a lower electrical resistance, and the interlayer insulating film is changed from a silicon oxide film to a low dielectric constant film (a film having a relative dielectric constant smaller than 3, hereinafter referred to as “low-k film”).
- low-k film a film having a relative dielectric constant smaller than 3, hereinafter referred to as “low-k film”.
- the pattern aspect ratio ratio of the photoresist film thickness divided by the photoresist line width
- a titanium or silicon film (hereinafter referred to as “hard mask”) is inserted between the pattern film to be actually formed and the photoresist film, and the photoresist pattern is once dried on the hard mask.
- a hard mask method is used in which a pattern is transferred to a film to be actually formed by dry etching using the hard mask as an etching mask. This method can change the gas used when etching the hard mask and the gas used when actually etching the film to be formed. When the hard mask is etched, the selectivity with respect to the photoresist is taken, and the actual film is etched.
- a gas having a selection ratio with respect to the hard mask can be selected, there is an advantage that a pattern can be formed with a thin photoresist.
- a material containing tungsten is used for the contact plug for connecting to the substrate.
- the gate material of the high dielectric constant film since it is difficult to control the threshold voltage with the conventionally used polycrystalline silicon, a material containing titanium or tungsten may be used.
- a material containing tungsten is used for a contact plug that connects wirings of different layers.
- the hard mask, the low-k film, the material containing tungsten, copper, and the copper alloy are exposed, so the dry etching residue and the photoresist are removed with oxygen plasma.
- a hard mask, a low-k film, a material containing tungsten, copper or a copper alloy is damaged by exposure to oxygen plasma or the like, and the electrical characteristics are significantly deteriorated, and the subsequent manufacturing process becomes defective. Therefore, it is required to remove dry etching residues and photoresists to the same extent as in the oxygen plasma process while suppressing damage to these materials.
- a dry etching residue and a photoresist can be removed by using a strong alkaline cleaning solution or a cleaning solution containing an oxidizing agent.
- strong alkaline chemicals may be able to remove residues, the removal of dry etching residues and photoresists is inferior to cleaning solutions containing oxidizing agents.
- a cleaning solution containing an oxidizing agent is excellent in the removal of dry etching residues and photoresists, but when it comes into contact with a material containing titanium or tungsten, the material containing titanium or tungsten is severely damaged.
- a cleaning liquid containing an oxidizing agent that can effectively remove dry etching residues and photoresist and does not damage titanium-containing materials or tungsten-containing materials is desired. Furthermore, a cleaning solution containing an oxidizing agent that does not damage copper or a copper alloy in addition to a material containing titanium or tungsten is desired.
- Patent Document 1 proposes a wiring formation method using a cleaning liquid containing an oxidizing agent, a quaternary ammonium hydroxide, an alkanolamine, an alkali metal hydroxide, and water.
- this cleaning solution can remove the residue while suppressing damage to the Low-k film, but cannot suppress damage to the material containing titanium. Therefore, this cleaning solution can not be used for cleaning the semiconductor element for the purpose of the present application which suppresses damage to the material containing titanium and the low-k film and removes dry etching residue (see Comparative Examples 19 and 20).
- Patent Document 2 proposes a wiring formation method using a cleaning liquid containing an oxidizing agent, a metal etching agent, and a surfactant and having a pH value of 10 to 14.
- this cleaning solution can remove the residue while suppressing damage to the Low-k film, but cannot suppress damage to the material containing titanium. Therefore, this cleaning solution can not be used for cleaning a semiconductor element for the purpose of the present application which suppresses damage to the material containing titanium and the low-k film and removes dry etching residue (see Comparative Examples 21 and 22).
- Patent Document 3 proposes a wiring formation method using a cleaning liquid containing a cleaning agent, a basic organic compound, an acidic organic compound, an imidazole, and water.
- this cleaning liquid can suppress damage to the material containing titanium, it cannot remove the residue or suppress damage to the low-k film. Therefore, this cleaning solution can not be used for cleaning the semiconductor element for the purpose of the present application which suppresses damage to the material containing titanium and the low-k film and removes dry etching residue (see Comparative Example 23).
- Patent Document 4 proposes a wiring formation method using a cleaning liquid containing a cleaning agent, a basic organic compound, an acidic organic compound, a nitrogen-containing non-aromatic cyclic compound, and water.
- this cleaning solution can suppress damage to the material containing titanium, but cannot remove the residue and suppress damage to the low-k film. Accordingly, this cleaning solution cannot be used for cleaning a semiconductor element for the purpose of the present application which suppresses damage to the material containing titanium and the low-k film and removes dry etching residues (see Comparative Example 24).
- Patent Document 5 proposes a wiring formation method using a cleaning liquid containing a hydroxylamine compound, an amine, a water-soluble organic solvent, a metal anticorrosive, and water.
- this cleaning solution can suppress damage to the material containing titanium, but cannot remove the residue and suppress damage to the low-k film. Therefore, this cleaning solution can not be used for cleaning a semiconductor element for the purpose of the present application which suppresses damage to the material containing titanium and the low-k film and removes dry etching residues (see Comparative Example 25).
- Patent Document 6 proposes a wiring formation method using a cleaning solution containing phosphoric acid, hydrochloric acid, amine, alanine surfactant and water.
- this cleaning solution can suppress damage to the material containing tungsten, but cannot remove the residue and suppress damage to the low-k film. Therefore, this cleaning solution can not be used for cleaning the semiconductor element for the purpose of the present application which suppresses damage to the material containing tungsten and the low-k film and removes dry etching residue (see Comparative Example 26).
- Patent Document 7 proposes a wiring formation method using a cleaning liquid containing hydrogen peroxide, triazoles and water.
- this cleaning solution can suppress damage to the Low-k film while removing the residue, but cannot suppress damage to the material containing tungsten. Accordingly, this cleaning solution cannot be used for cleaning the semiconductor element for the purpose of the present application which suppresses damage to the material containing tungsten and the low-k film and removes dry etching residues (see Comparative Examples 27 and 28).
- Patent Document 8 proposes a wiring formation method using a cleaning liquid containing hydrogen peroxide, a quaternary ammonium hydroxide, a quaternary ammonium salt, and water.
- this cleaning solution can suppress damage to the Low-k film while removing the residue, but cannot suppress damage to the material containing tungsten. Therefore, this cleaning solution can not be used for cleaning a semiconductor element for the purpose of the present application which suppresses damage to the material containing tungsten and the low-k film and removes dry etching residues (see Comparative Examples 29 and 30).
- Patent Document 9 proposes a wiring formation method using a cleaning liquid containing an inorganic base, a quaternary ammonium hydroxide, an organic solvent, an azole, and water.
- this cleaning solution can suppress damage to the material containing tungsten, but cannot remove the residue and suppress damage to the low-k film. Therefore, this cleaning solution can not be used for cleaning the semiconductor element for the purpose of the present application which suppresses damage to the material containing tungsten and the low-k film and removes dry etching residue (see Comparative Example 31).
- Patent Document 10 proposes a wiring formation method using a cleaning liquid containing hydrogen peroxide, hydrofluoric acid, an organic solvent, an azole, and water.
- this cleaning solution can remove the residue, but cannot suppress damage to the material containing tungsten and damage to the low-k film. Therefore, this cleaning solution suppresses damage to the material containing tungsten and the low-k film, and cannot be used for cleaning the semiconductor element for the purpose of the present application for removing the dry etching residue (see Comparative Examples 32 and 33).
- Patent Document 11 proposes a wiring formation method using a cleaning liquid containing hydrofluoric acid, an organic solvent, an azole, and water.
- this cleaning solution can suppress damage to the material containing tungsten, but cannot remove the residue and suppress damage to the low-k film. Therefore, this cleaning solution can not be used for cleaning a semiconductor element for the purpose of the present application which suppresses damage to the material containing tungsten and the low-k film and removes dry etching residues (see Comparative Example 34).
- Patent Document 12 proposes a wiring formation method using a cleaning liquid containing hydrofluoric acid, a silicon-containing compound, a surfactant, a carboxylic acid, an anticorrosive, and water.
- this cleaning solution can suppress damage to the material containing tungsten, but cannot remove the residue and suppress damage to the low-k film. Therefore, this cleaning solution can not be used for cleaning a semiconductor element for the purpose of the present application which suppresses damage to the material containing tungsten and the low-k film and removes dry etching residue (see Comparative Example 35).
- Patent Document 13 proposes a wiring formation method using a cleaning liquid containing sugars, hydroxylamines, quaternary ammonium compounds, organic acids and water.
- this cleaning solution can suppress damage to the Low-k film, but cannot remove the residue and damage of the material containing tungsten. Therefore, this cleaning solution can not be used for cleaning a semiconductor element for the purpose of the present application which suppresses damage to the material containing tungsten and the low-k film and removes dry etching residues (see Comparative Example 36).
- Patent Document 14 and Patent Document 15 propose a wiring formation method using a cleaning liquid containing an acid or a salt thereof, a chelating agent containing a nitrogen atom, an organic solvent and water.
- this cleaning solution can suppress damage to the material containing tungsten, but cannot remove the residue and suppress damage to the low-k film. Therefore, this cleaning solution can not be used for cleaning a semiconductor element for the purpose of the present application which suppresses damage to the material containing tungsten and the low-k film and removes dry etching residues (see Comparative Example 37).
- Patent Document 16 proposes a wiring formation method using a cleaning liquid containing N, N-diethylhydroxylamine, hydroxylamine, a water-soluble organic solvent, a metal anticorrosive, and water.
- this cleaning liquid can suppress damage to the material containing tungsten, but cannot remove the residue and damage to the material containing copper, a copper alloy, a low-k film, or titanium.
- this cleaning solution suppresses damage to the titanium-containing material and the low-k film, cleans the semiconductor element for the purpose of removing the dry etching residue, and suppresses damage to the tungsten-containing material and the low-k film, Cleaning of semiconductor device for the purpose of this application to remove dry etching residue, and semiconductor for the purpose of this application to suppress damage of titanium-containing material, tungsten-containing material, copper, copper alloy and low-k film, and remove dry etching residue It cannot be used for cleaning the element (see Comparative Example 39).
- Patent Document 17 proposes a wiring formation method using a cleaning liquid containing alkanolamine, N, N-diethylhydroxylamine, diethylene glycol monoalkyl ether, saccharide and water.
- this cleaning solution can suppress damage to materials containing tungsten, copper, copper alloys, and materials containing titanium, but it cannot remove residues and damage low-k films.
- this cleaning solution suppresses damage to the titanium-containing material and the low-k film, cleans the semiconductor element for the purpose of removing the dry etching residue, and suppresses damage to the tungsten-containing material and the low-k film, Cleaning of semiconductor device for the purpose of this application to remove dry etching residue, and semiconductor for the purpose of this application to suppress damage of titanium-containing material, tungsten-containing material, copper, copper alloy and low-k film, and remove dry etching residue It cannot be used for cleaning the element (see Comparative Example 40).
- Patent Document 18 proposes a wiring formation method using a cleaning liquid containing potassium hydroxide, quaternary ammonium hydroxide, an organic solvent, pyrazole, and water.
- this cleaning solution can suppress damage to materials containing tungsten, copper, copper alloys, and materials containing titanium, but it cannot remove residues and damage low-k films.
- this cleaning solution suppresses damage to the titanium-containing material and the low-k film, cleans the semiconductor element for the purpose of removing the dry etching residue, and suppresses damage to the tungsten-containing material and the low-k film, Cleaning of semiconductor device for the purpose of this application to remove dry etching residue, and semiconductor for the purpose of this application to suppress damage of titanium-containing material, tungsten-containing material, copper, copper alloy and low-k film, and remove dry etching residue It cannot be used for cleaning the element (see Comparative Example 41).
- Patent Document 19 proposes a wiring formation method using a cleaning liquid containing a fluorine compound, a metal corrosion inhibitor, a passivating agent, and water.
- this cleaning solution can suppress damage to materials containing tungsten, copper, copper alloys, and materials containing titanium, but it cannot remove residues and damage low-k films.
- this cleaning solution suppresses damage to the titanium-containing material and the low-k film, cleans the semiconductor element for the purpose of removing the dry etching residue, and suppresses damage to the tungsten-containing material and the low-k film, Cleaning of semiconductor device for the purpose of this application to remove dry etching residue, and semiconductor for the purpose of this application to suppress damage of titanium-containing material, tungsten-containing material, copper, copper alloy and low-k film, and remove dry etching residue It cannot be used for cleaning the element (see Comparative Example 42).
- Patent Document 20 proposes a wiring formation method using a cleaning liquid containing ammonium fluoride, gluconic acid, and water.
- this cleaning solution can suppress damage to materials containing tungsten, copper, copper alloys, and materials containing titanium, but it cannot remove residues and damage low-k films.
- this cleaning solution suppresses damage to the titanium-containing material and the low-k film, cleans the semiconductor element for the purpose of removing the dry etching residue, and suppresses damage to the tungsten-containing material and the low-k film, Cleaning of semiconductor device for the purpose of this application to remove dry etching residue, and semiconductor for the purpose of this application to suppress damage of titanium-containing material, tungsten-containing material, copper, copper alloy and low-k film, and remove dry etching residue It cannot be used for cleaning the element (see Comparative Example 43).
- Patent Document 21 proposes a wiring formation method using a cleaning liquid containing an amine compound, a hydroxylamine salt, a quaternary ammonium compound, an organic acid, a water-soluble organic solvent, and water.
- this cleaning liquid can suppress damage to materials containing tungsten and titanium, it cannot remove residues and prevent damage to copper, copper alloys, and low-k films.
- this cleaning solution suppresses damage to the titanium-containing material and the low-k film, cleans the semiconductor element for the purpose of removing the dry etching residue, and suppresses damage to the tungsten-containing material and the low-k film, Cleaning of semiconductor device for the purpose of this application to remove dry etching residue, and semiconductor for the purpose of this application to suppress damage of titanium-containing material, tungsten-containing material, copper, copper alloy and low-k film, and remove dry etching residue It cannot be used for cleaning the element (see Comparative Example 44).
- alkali, WzMXy (wherein M is selected from the group consisting of Si, Ge, Sn, Pt, P, B, Au, Ir, Os, Cr, Ti, Zr, Rh, Ru, and Sb)
- X is a halide selected from the group consisting of F, Cl, Br and I;
- W is selected from H, alkali or alkaline earth metals and metal ion-free hydroxide base moieties
- y is a number from 4 to 6 depending on the metal halide; and z is a number from 1, 2 or 3).
- this cleaning solution can not be used for cleaning a semiconductor element for the purpose of the present application which suppresses damage to the material containing tungsten and the low-k film and removes dry etching residues (see Comparative Example 46).
- the cleaning liquid blended with WzMXy described in the example of Patent Document 22 is titanium. It is not possible to suppress damage to the material containing tungsten and the material containing tungsten, and damage the Low-k film (see Comparative Example 47).
- Patent Document 23 proposes a method for cleaning a semiconductor substrate using a cleaning solution containing a carbonate and an acidic compound and having a pH value of less than 7.5.
- Specific examples of the carbonate contained in the cleaning liquid include those containing an alkaline earth metal, and this cleaning liquid is supposed to suppress corrosion of titanium nitride.
- the cleaning liquid described in Patent Document 23 cannot remove the dry etching residue, and cannot prevent damage to a material containing titanium, a material containing tungsten, and copper.
- this cleaning solution suppresses damage to the titanium-containing material and the low-k film, cleans the semiconductor element for the purpose of removing the dry etching residue, and suppresses damage to the tungsten-containing material and the low-k film, Cleaning of semiconductor device for the purpose of this application to remove dry etching residue, and semiconductor for the purpose of this application to suppress damage of titanium-containing material, tungsten-containing material, copper, copper alloy and low-k film, and remove dry etching residue It cannot be used for cleaning the element (see Comparative Example 48).
- the cleaning liquid that contains the carbonate described in the example of Patent Document 23 Damage to a material containing titanium and a material containing tungsten cannot be suppressed (see Comparative Example 49).
- An object of the present invention is to provide a cleaning liquid that suppresses damage to materials containing at least a low-k film and titanium and removes dry etching residue and photoresist on the surface of an object to be processed in a semiconductor element manufacturing process, and uses the same.
- a cleaning liquid that suppresses damage to materials containing at least a low-k film and titanium and removes dry etching residue and photoresist on the surface of an object to be processed in a semiconductor element manufacturing process, and uses the same.
- a cleaning method that suppresses damage to at least a low-k film and a material containing tungsten and removes dry etching residue and photoresist on the surface of the object to be processed in the manufacturing process of the semiconductor element, And a cleaning method using the same.
- Another object of the present invention is to suppress damage of at least a low-k film, a material containing titanium, and a material containing tungsten in a semiconductor element manufacturing process, A cleaning liquid for removing a photoresist and a cleaning method using the same are provided.
- the present invention is as follows. ⁇ 1> Dry etching of the surface of a semiconductor element having a low dielectric constant film (Low-k film) and one or more selected from a material containing 10 atomic% or more of titanium and a material containing 10 atomic% or more of tungsten A cleaning solution for removing residues and photoresists, wherein 0.002 to 50% by mass of one or more oxidizing agents selected from the group consisting of peroxides, perchloric acids and perchlorates, alkaline earth metal compounds
- the cleaning liquid comprising 0.000001 to 5% by mass and water.
- the peroxide is hydrogen peroxide, urea peroxide, metachloroperbenzoic acid, tert-butyl hydroperoxide, peracetic acid, di-tert-butyl peroxide, benzoyl peroxide, acetone peroxide, methyl ethyl ketone peroxide, hexa
- the perchlorate is ammonium perchlorate, potassium perchlorate, calcium perchlorate, magnesium perchlorate, silver perchlorate, sodium perchlorate, barium perchlorate, lithium perchlorate, Zinc perchlorate, acetylcholine perchlorate, lead perchlorate, rubidium perchlorate, cesium perchlorate, cadmium perchlorate, iron perchlorate, aluminum perchlorate, strontium perchlorate, tetrabutyl perchlorate.
- ⁇ 5> The cleaning liquid according to ⁇ 1>, wherein the oxidizing agent is hydrogen peroxide, and the pH of the cleaning liquid is 3 to 14.
- ⁇ 6> The cleaning liquid according to any one of ⁇ 1> to ⁇ 5>, wherein the cleaning liquid has a pH value of 7 to 14.
- the cleaning liquid of the present invention With the cleaning liquid of the present invention and the cleaning method using the same, at least one or more damage selected from a low-k film and a material containing titanium and a material containing tungsten is suppressed in the manufacturing process of the semiconductor element,
- the dry etching residue and the photoresist on the surface of the object to be processed can be selectively removed, and a high-precision and high-quality semiconductor element can be manufactured with a high yield.
- FIG. 1 It is a schematic sectional drawing which shows an example of the structure containing the material containing titanium of the semiconductor element before dry etching residue removal, and a Low-k film
- FIG. 6 is a schematic cross-sectional view showing an example of a structure including a low-k film and a material including titanium of a semiconductor element before removal of a dry etching residue and a photoresist.
- FIG. 6 is a schematic cross-sectional view showing an example of a structure including a low-k film and a material including tungsten of a dry etching residue and a semiconductor element before removing a photoresist.
- It is a schematic sectional drawing which shows an example of the structure containing the material containing titanium and the material containing tungsten of the dry etching residue and the semiconductor element before a photoresist removal.
- It is a schematic sectional drawing which shows an example of the structure containing the material containing titanium of the dry etching residue and the semiconductor element before photoresist removal, and copper or copper alloy wiring.
- the cleaning liquid of the present invention is used in a cleaning process for manufacturing a semiconductor element. At that time, a dry etching residue and a photoresist can be sufficiently cleaned and removed, and at least a low-k film and a material containing titanium. And damage with one or more selected from the material containing tungsten can be suppressed.
- the cleaning liquid of the present invention can be used for a semiconductor element having a material containing titanium, but can also be used for a semiconductor element having a material containing tungsten, and furthermore, a material containing titanium and tungsten are used. It can also be used for semiconductor devices having both of the materials they contain.
- titanium and tungsten do not need to be included in the same layer constituting one semiconductor element, and are included in separate layers constituting one semiconductor element. Good. According to the present invention, it is possible to prevent corrosion of titanium with respect to a layer containing titanium and to prevent corrosion of tungsten with respect to another layer containing tungsten. Good.
- the semiconductor element to which the cleaning liquid of the present invention is applied only needs to contain at least one of titanium and tungsten, and may contain a metal other than titanium and tungsten.
- the material containing titanium contained in the semiconductor element to which the cleaning liquid of the present invention is applied is a material containing 10 atomic% or more of titanium, and the atomic composition percentage of the titanium is preferably 15 atomic% or more, more preferably 20%. Atomic% or more, more preferably 25 atomic% or more, particularly preferably 30 atomic% or more.
- the content of titanium can be examined by measuring the composition ratio of titanium atoms of a material containing titanium as a target by ion sputtering of X-ray photoelectron spectroscopy (XPS). The vicinity of the surface of the material containing titanium is oxidized, so that the composition ratio of oxygen atoms may be higher than the inside of the material.
- XPS X-ray photoelectron spectroscopy
- the surface of the material containing titanium is etched by ion sputtering until the composition ratio of atoms of titanium and oxygen becomes constant, and the composition ratio of titanium atoms inside the material containing titanium exposed by ion sputtering is measured.
- a fully automatic XPS analyzer K-Alpha manufactured by Thermo Fisher Scientific Co., Ltd.
- Specific examples of the material containing titanium are titanium oxide, titanium nitride, titanium, and titanium silicide, and preferably titanium oxide, titanium nitride, and titanium.
- the material containing titanium is not limited thereto as long as the material contains 10 atomic% or more of titanium.
- the material containing tungsten contained in the semiconductor element to which the cleaning liquid of the present invention is applied is a material containing 10 atomic% or more of tungsten, and the atomic composition percentage of the tungsten is preferably 15 atomic% or more, more preferably 20%. Atomic% or higher, more preferably 25 atomic% or higher, even more preferably 30 atomic% or higher, particularly preferably 35 atomic% or higher, and most preferably 40 atomic% or higher.
- the content of tungsten can be examined by measuring the composition ratio of tungsten atoms of the target tungsten-containing material by XPS ion sputtering as described above.
- a fully automatic XPS analyzer K-Alpha manufactured by Thermo Fisher Scientific Co., Ltd.
- the material containing tungsten are tungsten oxide, tungsten nitride, tungsten, and tungsten silicide, and preferably tungsten oxide, tungsten nitride, and tungsten.
- the material containing tungsten is not limited thereto as long as it is a material containing 10 atomic% or more of tungsten.
- the semiconductor element to which the cleaning liquid of the present invention is applied may contain copper or a copper alloy.
- copper and copper alloy are copper, aluminum copper, manganese copper, nickel copper, titanium copper, gold copper, silver copper, tungsten copper, copper silicide, cobalt copper, and zinc copper, preferably copper, aluminum copper, Manganese copper, nickel copper, and titanium copper. However, it is not limited to these.
- the concentration range of the alkaline earth metal compound contained in the cleaning liquid of the present invention is 0.000001 to 5% by mass, preferably 0.000005 to 1% by mass, more preferably 0.00005 to 0.7% by mass. Particularly preferred is 0.0005 to 0.5% by mass.
- one or more selected from a material containing titanium and a material containing tungsten can be effectively prevented from corrosion.
- the concentration range of the alkaline earth metal compound exceeds 5% by mass, the removability of the dry etching residue may be deteriorated.
- the present inventors have found for the first time that the alkaline earth metal compound contained in the cleaning liquid exhibits an anticorrosive effect on one or more selected from materials containing titanium and materials containing tungsten. Although the mechanism is not clear, alkaline earth metal compounds are adsorbed on the surface of titanium or tungsten, preventing oxidants such as hydrogen peroxide and alkali contained in the cleaning liquid from attacking titanium or tungsten. it is conceivable that.
- alkaline earth metal compounds are calcium compounds, strontium compounds, and barium compounds. More specifically, barium nitrate, barium hydroxide, barium chloride, barium acetate, barium oxide, barium bromide, barium carbonate, barium fluoride, barium iodide, barium sulfate, barium phosphate, calcium nitrate, calcium chloride, Calcium acetate, calcium oxide, calcium bromide, calcium carbonate, calcium fluoride, calcium iodide, calcium sulfate, calcium phosphate, strontium nitrate, strontium chloride, strontium acetate, strontium oxide, strontium bromide, strontium carbonate, strontium fluoride, iodine Examples thereof include, but are not limited to, strontium chloride, strontium sulfate, and strontium phosphate.
- barium nitrate, barium hydroxide, barium chloride, calcium nitrate, and strontium chloride are more preferable, and barium nitrate, barium hydroxide, barium chloride, and calcium nitrate are particularly preferable.
- These alkaline earth metal compounds can be blended alone or in combination of two or more.
- the concentration range of one or more oxidizing agents selected from the group consisting of peroxide, perchloric acid and perchlorate contained in the cleaning liquid of the present invention is 0.002 to 50% by mass, preferably 0.8.
- the content is from 01 to 30% by mass, more preferably from 0.1 to 25% by mass, and particularly preferably from 0.3 to 25% by mass.
- the dry etching residue can be effectively removed.
- the peroxide used in the present invention is a compound having a structure of (—O—O—) (O is an oxygen atom).
- peroxides are hydrogen peroxide, urea peroxide, metachloroperbenzoic acid, tert-butyl hydroperoxide, peracetic acid, di-tert-butyl peroxide, benzoyl peroxide, acetone peroxide, methyl ethyl ketone peroxide, hexamethylene.
- Examples include, but are not limited to, triperoxide and cumene hydroperoxide.
- hydrogen peroxide, metachloroperbenzoic acid, and tert-butyl hydroperoxide are more preferable.
- the inorganic peroxide is substantially equivalent to hydrogen peroxide because it reacts with water to generate hydrogen peroxide in the cleaning liquid. Therefore, an inorganic peroxide may be added to generate hydrogen peroxide in the cleaning liquid.
- inorganic peroxides include lithium peroxide, potassium peroxide, sodium peroxide, rubidium peroxide, cesium peroxide, beryllium peroxide, magnesium peroxide, calcium peroxide, strontium peroxide, barium peroxide, Although it is zinc oxide, cadmium peroxide, and copper peroxide, it is not limited to these.
- perchloric acid or perchlorate used in the present invention are perchloric acid, ammonium perchlorate, potassium perchlorate, calcium perchlorate, magnesium perchlorate, silver perchlorate, perchlorate.
- Examples include, but are not limited to, aluminum oxide, strontium perchlorate, tetrabutylammonium perchlorate, lanthanum perchlorate, indium perchlorate, and tetra-n-hexylammonium perchlorate.
- ammonium perchlorate is more preferable. These can be blended alone or in combination of two or more.
- the water used in the present invention is preferably water from which metal ions, organic impurities, particle particles, and the like have been removed by distillation, ion exchange treatment, filter treatment, various adsorption treatments, and the like, and particularly pure water and ultrapure water are preferred. .
- the concentration of water is the balance excluding various drugs.
- the cleaning liquid of the present invention should be used in an arbitrary pH range of 0 to 14 for the purpose of suppressing damage to the material containing the low-k film and titanium and removing the dry etching residue on the surface of the object to be processed.
- a preferable pH value is 0.2 to 14, more preferably 0.6 to 13.1, further preferably 1.5 to 12.8, and particularly preferably 2 to 12.5. When the pH value is within this range, damage to the material containing the Low-k film and titanium can be suppressed, and the dry etching residue on the surface of the object to be processed can be selectively removed.
- the pH value can be used in an arbitrary range of 0 to 14 for the purpose of suppressing damage to the material containing the low-k film and tungsten and removing the dry etching residue on the surface of the object to be processed.
- the pH value is preferably 3 to 14, more preferably 5 to 13.1, even more preferably 7.7 to 12.8, and particularly preferably 8 to 12. When the pH value is within this range, damage to the material containing the Low-k film and tungsten can be suppressed, and the dry etching residue on the surface of the object to be processed can be selectively removed.
- the pH value is 3 to 14. It can be used in any range.
- a preferable pH value is 4 to 14, more preferably 5 to 12.8, still more preferably 7.7 to 12.8, and particularly preferably 8 to 12.
- the pH value is within this range, damage to the Low-k film, the material containing titanium, the material containing tungsten, and copper or copper alloy is suppressed, and the dry etching residue on the surface of the object to be processed is selectively removed. be able to.
- Photoresist can be removed at any pH.
- a preferred pH value is 7 to 14, more preferably 7.5 to 14, still more preferably 7.7 to 13.1, even more preferably 8.6 to 12.8, and particularly preferably. Is 9 to 12.8.
- the cleaning liquid of the present invention may contain a pH adjuster.
- a pH adjuster any inorganic acid, organic acid, inorganic alkali, and organic alkali can be used. Specifically, sulfuric acid, nitric acid, phosphoric acid, hydrofluoric acid, hydrochloric acid, acetic acid, citric acid, formic acid, malonic acid, lactic acid, oxalic acid and potassium hydroxide, potassium acetate, potassium carbonate, potassium phosphate, sodium hydroxide, Lithium hydroxide, cesium hydroxide, triethylamine, ammonia, tetramethylammonium hydroxide, ethanolamine, 1-amino-2-propanol and the like can be used, but are not limited thereto.
- These pH adjusters can be used alone or in combination of two or more.
- additives that have been conventionally used in semiconductor cleaning liquids may be blended if desired so long as the object of the present invention is not impaired.
- oxidizing agents other than peroxides, perchloric acid and perchlorates, metal anticorrosives, water-soluble organic solvents, fluorine compounds, reducing agents, chelating agents, surfactants, antifoaming agents, etc. can be added. .
- the temperature at which the cleaning liquid of the present invention is used is in the range of 10 to 85 ° C., preferably 20 to 70 ° C., and may be appropriately selected depending on the etching conditions and the semiconductor element used.
- ultrasonic waves can be used in combination as necessary.
- the time for using the cleaning liquid of the present invention is in the range of 0.1 to 120 minutes, preferably 0.5 to 60 minutes, and may be appropriately selected depending on the etching conditions and the semiconductor element used.
- an organic solvent such as alcohol can be used, but rinsing with water is sufficient.
- HSQ hydroxysilsesquioxane
- MSQ methylsilsesoxane
- OCD organic carbon-doped silicon oxide
- SiOC carbon-doped silicon oxide
- Aurora trade name, manufactured by ASM International
- Coral trade name, manufactured by Novellus Systems
- inorganic Orion trade name, manufactured by Trikon Tenclogies
- the Low-k film is not limited to these.
- the semiconductor element and the display element to which the cleaning liquid of the present invention is applied include substrate materials such as silicon, amorphous silicon, polysilicon, and glass; insulating materials such as silicon oxide, silicon nitride, silicon carbide, and derivatives thereof; cobalt, Materials such as cobalt alloy, tungsten, titanium-tungsten; compound semiconductors such as gallium-arsenic, gallium-phosphorus, indium-phosphorus, indium-gallium-arsenic, indium-aluminum-arsenic; oxide semiconductors such as chromium oxide Including.
- the semiconductor element to which the cleaning liquid of the present invention is applied may include a barrier metal and / or a barrier insulating film.
- a barrier metal tantalum, tantalum nitride, titanium, titanium nitride, ruthenium, manganese, magnesium and oxides thereof are used.
- the barrier metal is not limited to these.
- barrier insulating film silicon nitride, silicon carbide, and silicon nitride carbide are used.
- the barrier insulating film is not limited to these.
- the cleaning liquid compositions used in the examples are summarized in Table 1, and the cleaning liquid compositions used in the comparative examples are summarized in Tables 7 and 8.
- a semiconductor element having a wiring structure having a cross section as shown in FIGS. 1 to 8 was used, and the cleaning effect was examined. Immersion was performed at a predetermined temperature and time, and thereafter, rinsing with ultrapure water and drying by dry nitrogen gas injection were performed. By observing the cleaned semiconductor element with an SEM, the removal state of the dry etching residue or the photoresist and the damage of each material were determined.
- the material containing titanium used in the test was titanium oxide, containing 30 atomic percent titanium.
- the material containing tungsten used in the test was tungsten oxide, and contained 40 atomic% tungsten.
- the titanium content was measured by the X-ray photoelectron spectroscopy (XPS) ion sputtering method as described above.
- the tungsten content was also measured by XPS ion sputtering as described above.
- XPS analyzer K-Alpha manufactured by Thermo Fisher Scientific Co., Ltd.
- Examples 1 to 22 The results of cleaning the semiconductor element shown in FIG. 1 with the cleaning liquid of the present invention shown in Table 1 are shown in Table 2. In Examples 1 to 22, it can be seen that the dry etching residue 3 is completely removed while preventing damage to the material 1 containing titanium and the low-k film 2.
- Examples 23-41 The results of cleaning the semiconductor element shown in FIG. 2 with the cleaning liquid of the present invention shown in Table 1 are shown in Table 3. In Examples 23 to 41, it can be seen that the dry etching residue 3 is completely removed while preventing damage to the material 4 containing tungsten and the low-k film 2.
- Table 4 shows the results of cleaning the semiconductor elements shown in FIGS. 3 and 4 with the cleaning liquid of the present invention shown in Table 1.
- the dry etching residue 3 is completely removed while preventing damage to the material 1 containing titanium, the material 4 containing tungsten, the copper 5 and the low-k film 2.
- Examples 60-62 Table 5 shows the results of cleaning the semiconductor elements shown in FIGS. 5, 6, and 7 with the cleaning liquid of the present invention shown in Table 1. In Examples 60 to 62, it can be seen that the photoresist 8 is completely removed.
- Examples 63-79 Table 6 shows the results of cleaning the semiconductor elements shown in FIGS. 5, 6, 7 and 8 with the cleaning liquid of the present invention shown in Table 1. In Examples 63 to 79, it can be seen that the photoresist 8 is completely removed.
- Comparative Examples 1-18 The semiconductor device shown in FIG. 1 was cleaned with a cleaning solution (Table 7, cleaning solutions 2A to 2R) to which barium nitrate was not added as the cleaning solution used in Examples 1 to 18 (Table 1, cleaning solutions 1A to 1R). Table 9 shows the cleaning conditions and cleaning results. Compared with the cleaning solutions obtained by adding barium nitrate to the cleaning solutions 2A to 2R shown in Comparative Examples 1 to 18 (Table 1, cleaning solutions 1A to 1R), there was no difference in the removability of the dry etching residue 3 (FIG. 1). Damage was observed in all of the contained materials 1 (FIG. 1).
- the cleaning solution of 2A to 2R suppresses the damage of the titanium-containing material and the low-k film and removes the dry etching residue on the surface of the object to be processed in the manufacturing process of the semiconductor device which is the subject of the present invention. It can be seen that it cannot be used for purposes (Table 9). Further, from these and Examples 19 to 22, it can be seen that the alkaline earth metal compound is useful for suppressing the damage of the material containing titanium without deteriorating the removability of the dry etching residue 3.
- Cleaning solutions used in Examples 23 to 37 (Table 1, cleaning solutions 1A, 1B, 1D to 1J, 1M to 1R) without addition of barium nitrate (Table 7, cleaning solutions 2A, 2B, 2D to 2J, 2M to 2R)
- Table 7 cleaning solutions 2A, 2B, 2D to 2J, 2M to 2R
- Table 9 shows cleaning conditions and cleaning results.
- Cleaning solutions obtained by adding barium nitrate to the cleaning solutions 2A, 2B, 2D to 2J, and 2M to 2R shown in Comparative Examples 1, 2, 4 to 10, and 13 to 18 (Table 1, cleaning solutions 1A, 1B, 1D to 1J, 1M to 1R) 2), there was no difference in the removability of the dry etching residue 3 (FIG. 2), but damage was observed in the material 4 (FIG.
- the cleaning liquids 2A, 2B, 2D to 2J, and 2M to 2R suppress damage to the tungsten-containing material and the low-k film in the manufacturing process of the semiconductor element that is the subject of the present invention, and the surface of the object to be processed. It can be seen that it cannot be used for the purpose of this application to remove the dry etching residue (Table 9). Further, from these and Examples 38 to 41, it can be seen that the alkaline earth metal compound is useful for suppressing damage to the material containing tungsten without deteriorating the removal property of the dry etching residue 3.
- FIG. 1 shows a cleaning liquid (Table 8, cleaning liquid 2S) containing 12% by mass of tetramethylammonium hydroxide, 5% by mass of hydrogen peroxide, 2% by mass of potassium hydroxide, 35% by mass of triethanolamine, and 46% by mass of water.
- Table 8 shows cleaning conditions and evaluation results. Washing with this cleaning solution for 40 minutes could remove the residue without damaging the Low-k film, but damaged the material containing titanium (Comparative Example 19).
- the immersion time was shortened to 20 minutes in order to suppress damage to the material containing titanium, the Low-k film was not damaged, but the residue could not be removed, and the material containing titanium was also damaged (Comparative Example). 20).
- the 2S cleaning solution cannot be used for the purpose of the present invention, which suppresses damage to the material containing titanium and removes dry etching residue on the surface of the object to be processed in the manufacturing process of the semiconductor device that is the subject of the present invention. Recognize.
- FIG. 1 shows a cleaning liquid (Table 8, cleaning liquid 2T) containing 3% by weight of sodium hydroxide, 2% by weight of hydrogen peroxide, 0.05% by weight of polypropylene glycol (number average molecular weight 400), and 94.95% by weight of water.
- the semiconductor element was cleaned.
- Table 9 shows cleaning conditions and evaluation results. Washing with this cleaning solution for 40 minutes could remove the residue without damaging the Low-k film, but damaged the material containing titanium (Comparative Example 21).
- the immersion time was shortened to 20 minutes in order to suppress damage to the material containing titanium, the low-k film was not damaged, but the residue could not be removed, and the material containing titanium was also damaged (Comparative Example). 22).
- the 2T cleaning solution cannot be used for the purpose of the present invention, which suppresses damage to the material containing titanium and removes dry etching residue on the surface of the object to be processed in the manufacturing process of the semiconductor device that is the subject of the present invention. Recognize.
- Comparative Example 23 (Invention described in Patent Document 3) A cleaning solution containing 4% by mass of hydroxylamine sulfate, 3.8% by mass of tetramethylammonium hydroxide, 1% by mass of citric acid, 1% by mass of 2-methylimidazole, and 90.2% by mass of water (Table 8, cleaning solution 2U) The semiconductor element shown in FIG. 1 was cleaned. Table 9 shows cleaning conditions and evaluation results. Although this cleaning liquid can suppress the damage of the material containing titanium, the residue cannot be removed, and the Low-k film is damaged.
- the 2U cleaning liquid cannot be used for the purpose of the present invention which suppresses the damage of the material containing titanium and removes the dry etching residue on the surface of the object to be processed in the manufacturing process of the semiconductor element which is the subject of the present invention. Recognize.
- Comparative Example 24 (Invention described in Patent Document 4)
- Figure 4 shows a cleaning solution (Table 8, cleaning solution 2V) containing 4% by weight of hydroxylamine sulfate, 4.7% by weight of tetramethylammonium hydroxide, 1% by weight of acetic acid, 2% by weight of hydroxylethylmorpholine, and 88.3% by weight of water.
- the semiconductor element shown in 1 was washed.
- Table 9 shows cleaning conditions and evaluation results. Although this cleaning liquid can suppress the damage of the material containing titanium, the residue cannot be removed, and the Low-k film is damaged.
- the 2V cleaning solution cannot be used for the purpose of the present invention, which suppresses damage to the material containing titanium and removes dry etching residue on the surface of the object to be processed in the manufacturing process of the semiconductor device that is the subject of the present invention. Recognize.
- Comparative Example 25 (Invention described in Patent Document 5)
- the semiconductor element shown in FIG. 1 was cleaned with a cleaning liquid (Table 8, cleaning liquid 2W) containing 15% by mass of hydroxylamine, 10% by mass of monoethanolamine, 55% by mass of dimethyl sulfoxide, 5% by mass of catechol, and 15% by mass of water.
- Table 9 shows cleaning conditions and evaluation results.
- this cleaning liquid can suppress the damage of the material containing titanium, the residue cannot be removed, and the Low-k film is damaged. Accordingly, the 2W cleaning liquid cannot be used for the purpose of the present invention, which suppresses damage to the material containing titanium and removes dry etching residue on the surface of the object to be processed in the manufacturing process of the semiconductor device that is the subject of the present invention. Recognize.
- Comparative Example 26 (Invention described in Patent Document 6) A cleaning solution containing 1.35% by mass of phosphoric acid, 1% by mass of hydrochloric acid, 5% by mass of tetramethylammonium hydroxide, 0.01% by mass of sodium lauryldiaminoethylglycine, and 92.64% by mass of water (Table 8, cleaning solution 2X) The semiconductor element shown in FIG. 2 was cleaned. Table 9 shows cleaning conditions and evaluation results. Although this cleaning liquid can suppress the damage of the material containing tungsten, the residue cannot be removed, and the Low-k film is damaged.
- the 2X cleaning liquid suppresses damage to the tungsten-containing material and the low-k film and removes dry etching residue on the surface of the object to be processed in the manufacturing process of the semiconductor device that is the subject of the present invention. Can not be used.
- Comparative Examples 27 and 28 (Invention described in Patent Document 7)
- the semiconductor element shown in FIG. 2 was cleaned with a cleaning liquid (Table 8, cleaning liquid 2Y) containing 5% by mass of hydrogen peroxide, 0.01% by mass of aminotriazole, and 94.99% by mass of water.
- Table 9 shows cleaning conditions and evaluation results. Washing with this cleaning solution for 30 minutes can remove the residue without damaging the Low-k film, but damages the material containing tungsten (Comparative Example 27).
- the immersion time was shortened to 5 minutes in order to suppress damage to the material containing tungsten, the low-k film was not damaged, but the residue could not be removed, and the material containing tungsten was also damaged (Comparative Example). 28).
- the 2Y cleaning liquid is used for the purpose of the present invention to suppress damage to the tungsten-containing material and the low-k film and remove dry etching residue on the surface of the object to be processed in the manufacturing process of the semiconductor device which is the subject of the present invention. Can not be used.
- Comparative Examples 29 and 30 Hydrogen peroxide 15% by mass, benzyltrimethylammonium hydroxide 0.2% by mass, Esocard O / 12 [oleylbis (2-hydroxyethyl) methylammonium-bis (trifluoromethanesulfonyl) imide] (manufactured by Lion Corporation) 0.001
- the semiconductor element shown in FIG. 2 was cleaned with a cleaning liquid (Table 8, cleaning liquid 2Z) containing mass% and water 84.799 mass%.
- Table 9 shows cleaning conditions and evaluation results. Washing with this cleaning solution for 30 minutes can remove the residue without damaging the Low-k film, but damages the material containing tungsten (Comparative Example 30).
- the 2Z cleaning solution suppresses the damage of the tungsten-containing material and the low-k film and removes the dry etching residue on the surface of the object to be processed in the manufacturing process of the semiconductor device which is the subject of the present invention. Can not be used.
- Comparative Example 31 (Invention described in Patent Document 9) A cleaning solution containing 10% by mass of tetraethylammonium hydroxide, 0.02% by mass of sodium hydroxide, 2% by mass of 2-ethyl-4-methylimidazole, 40% by mass of dimethyl sulfoxide, and 47.98% by mass of water (Table 8, cleaning solution) 2AA), the semiconductor element shown in FIG. 2 was cleaned. Table 9 shows cleaning conditions and evaluation results. Although this cleaning liquid can suppress the damage of the material containing tungsten, the residue cannot be removed, and the Low-k film is damaged.
- the 2AA cleaning solution is used for the purpose of the present invention, which suppresses the damage of the tungsten-containing material and the low-k film and removes the dry etching residue on the surface of the object to be processed in the manufacturing process of the semiconductor device which is the subject of the present invention. Can not be used.
- FIG. 2 shows a cleaning solution (Table 8, Cleaning Solution 2AB) containing 14% by mass of hydrogen peroxide, 0.3% by mass of hydrofluoric acid, 58.4% by mass of diethylene glycol monomethyl ether, 1% by mass of vinylimidazole, and 26.3% by mass of water.
- Table 8 shows cleaning conditions and evaluation results. Washing with this cleaning solution for 30 minutes can remove the residue, but damages the material containing tungsten and the Low-k film (Comparative Example 33).
- the 2AB cleaning solution is used for the purpose of the present invention, which suppresses damage to the tungsten-containing material and the low-k film and removes the dry etching residue on the surface of the object to be processed in the manufacturing process of the semiconductor device which is the subject of the present invention. Can not be used.
- FIG. 2 shows a cleaning solution (Table 8, cleaning solution 2AC) containing 0.3% by mass of hydrofluoric acid, 60% by mass of diethylene glycol monomethyl ether, 1% by mass of 2-ethyl-4-methylimidazole, and 38.7% by mass of water.
- the semiconductor element was cleaned.
- Table 9 shows cleaning conditions and evaluation results. Although this cleaning liquid can suppress the damage of the material containing tungsten, the residue cannot be removed, and the Low-k film is damaged.
- the cleaning solution of 2AC is used for the purpose of the present invention, which suppresses the damage of the material containing tungsten and the low-k film and removes the dry etching residue on the surface of the object to be processed in the manufacturing process of the semiconductor device which is the subject of the present invention. Can not be used.
- Comparative Example 35 (Invention described in Patent Document 12) A cleaning solution containing 0.1% by mass of hydrofluoric acid, 0.1% by mass of aminopropyltrimethoxysilane, 0.1% by mass of benzotriazole, 1% by mass of ethanol, 1% by mass of acetic acid, and 97.7% by mass of water (Table 8) The semiconductor element shown in FIG. 2 was cleaned with cleaning liquid 2AD). Table 9 shows cleaning conditions and evaluation results. Although this cleaning liquid can suppress the damage of the material containing tungsten, the residue cannot be removed, and the Low-k film is damaged.
- the 2AD cleaning liquid is used for the purpose of the present invention, which suppresses damage to the tungsten-containing material and the low-k film and removes the dry etching residue on the surface of the object to be processed in the manufacturing process of the semiconductor device that is the subject of the present invention. Can not be used.
- Comparative Example 36 (Invention described in Patent Document 13) In a cleaning solution (Table 8, Cleaning Solution 2AE) containing 2% by weight of hydroxylamine sulfate, 3.4% by weight of tetramethylammonium hydroxide, 2% by weight of citric acid, 0.5% by weight of sorbitol, and 92.1% by weight of water The semiconductor element shown in FIG. 2 was cleaned. Table 9 shows cleaning conditions and evaluation results. Although this cleaning liquid can suppress the damage of the Low-k film, the residue cannot be removed, and the material containing tungsten is damaged.
- the 2AE cleaning solution is used for the purpose of the present invention, which suppresses damage to the tungsten-containing material and the low-k film and removes the dry etching residue on the surface of the object to be processed in the manufacturing process of the semiconductor device which is the subject of the present invention. Can not be used.
- FIG. 2 shows a cleaning liquid (Table 8, cleaning liquid 2AF) containing 5% by mass of ammonium acetate, 0.8% by mass of glycine, 0.18% by mass of ammonia, 3.6% by mass of dimethyl sulfoxide, and 90.42% by mass of water.
- the semiconductor element was cleaned.
- Table 9 shows cleaning conditions and evaluation results. Although this cleaning liquid can suppress the damage of the material containing tungsten, the residue cannot be removed, and the Low-k film is damaged.
- the 2AF cleaning solution suppresses damage to the tungsten-containing material and the low-k film and removes dry etching residue on the surface of the object to be processed in the manufacturing process of the semiconductor device that is the subject of the present invention. Can not be used.
- Comparative Example 38 The semiconductor elements shown in FIGS. 3 and 4 were cleaned with a cleaning liquid (Table 8, cleaning liquid 2AG) containing 4.5% by mass of potassium hydroxide, 0.003% by mass of barium nitrate, and 95.497% by mass of water.
- a cleaning liquid Table 8, cleaning liquid 2AG
- tungsten is used in the semiconductor element of FIG. 3
- copper is used in the semiconductor element of FIG. Table 9 shows cleaning conditions and evaluation results. Although this cleaning liquid can suppress damage to the material containing titanium, the material containing tungsten, and copper, the residue cannot be removed, and the Low-k film is damaged.
- the cleaning solution of 2AG suppresses the damage of the material containing the low-k film and titanium in the manufacturing process of the semiconductor device that is the subject of the present invention, and the purpose of this application is to remove the dry etching residue on the surface of the object to be processed.
- a low-k film and a material containing tungsten to suppress damage and remove dry etching residues on the surface of the object to be processed, and a low-k film, a material containing titanium, a material containing tungsten, and copper or copper
- FIGS. 3 and 4 show a cleaning solution (Table 8, cleaning solution 2AH) containing 10% by mass of N, N-diethylhydroxylamine, 15% by mass of hydroxylamine, 50% by mass of dimethyl sulfoxide, 10% by mass of catechol, and 15% by mass of water.
- the indicated semiconductor element was cleaned.
- Table 9 shows cleaning conditions and evaluation results. Although this cleaning liquid can suppress damage to the material containing tungsten, the dry etching residue cannot be removed, and damage is caused to the low-k film, the material containing titanium, and copper.
- the 2AH cleaning liquid suppresses damage to the material containing the low-k film and titanium in the manufacturing process of the semiconductor element that is the subject of the present invention, and removes the dry etching residue on the surface of the object to be processed.
- a low-k film and a material containing tungsten to suppress damage and remove dry etching residues on the surface of the object to be processed, and a low-k film, a material containing titanium, a material containing tungsten, and copper or copper It turns out that it cannot be used for the purpose of this application which suppresses damage with an alloy and removes the dry etching residue on the surface of the workpiece.
- FIG. 3 and FIG. 3 show a cleaning liquid (Table 8, cleaning liquid 2AI) containing 10% by mass of monoethanolamine, 10% by mass of N, N-diethylhydroxylamine, 30% by mass of diethylene glycol monobutyl ether, 10% by mass of sorbitol, and 40% by mass of water.
- the semiconductor element shown in 4 was washed.
- Table 9 shows cleaning conditions and evaluation results. Although this cleaning liquid can suppress damage to the material containing titanium, the material containing tungsten, and copper, the dry etching residue cannot be removed, and the Low-k film is damaged.
- the cleaning solution of 2AI suppresses the damage of the material containing the low-k film and titanium in the manufacturing process of the semiconductor element that is the subject of the present invention
- the purpose of the present invention is to remove the dry etching residue on the surface of the object to be processed.
- a low-k film and a material containing tungsten to suppress damage and remove dry etching residues on the surface of the object to be processed
- a low-k film, a material containing titanium, a material containing tungsten, and copper or copper It turns out that it cannot be used for the purpose of this application which suppresses damage with an alloy and removes the dry etching residue on the surface of the workpiece.
- Comparative Example 41 (Invention described in Patent Document 18) Cleaning solution containing 0.005% by weight potassium hydroxide, 10% by weight tetramethylammonium hydroxide, 50% by weight diethylene glycol monomethyl ether, 0.1% by weight pyrazole, and 39.895% by weight water (Table 8, Cleaning Solution 2AJ) The semiconductor elements shown in FIGS. 3 and 4 were washed. Table 9 shows cleaning conditions and evaluation results. Although this cleaning liquid can suppress damage to the material containing titanium, the material containing tungsten, and copper, the dry etching residue cannot be removed, and the Low-k film is damaged.
- the cleaning solution of 2AJ suppresses damage to the material containing the low-k film and titanium in the manufacturing process of the semiconductor element that is the subject of the present invention, and removes the dry etching residue on the surface of the object to be processed.
- a low-k film and a material containing tungsten to suppress damage and remove dry etching residues on the surface of the object to be processed, and a low-k film, a material containing titanium, a material containing tungsten, and copper or copper It turns out that it cannot be used for the purpose of this application which suppresses damage with an alloy and removes the dry etching residue on the surface of the workpiece.
- Comparative Example 42 (Invention described in Patent Document 19) A cleaning solution containing 0.1% by weight of benzotriazole, 0.1% by weight of 1,2,4-triazole, 5% by weight of ammonium fluoride, 1% by weight of boric acid, and 93.8% by weight of water (Table 8, Cleaning Solution 2AK) The semiconductor elements shown in FIGS. 3 and 4 were washed. Table 9 shows cleaning conditions and evaluation results. Although this cleaning liquid can suppress damage to the material containing titanium, the material containing tungsten, and copper, the dry etching residue cannot be removed, and the Low-k film is damaged.
- the 2AK cleaning solution suppresses damage to the material including the low-k film and titanium in the manufacturing process of the semiconductor element that is the subject of the present invention, and removes dry etching residue on the surface of the object to be processed.
- a low-k film and a material containing tungsten to suppress damage and remove dry etching residues on the surface of the object to be processed, and a low-k film, a material containing titanium, a material containing tungsten, and copper or copper It turns out that it cannot be used for the purpose of this application which suppresses damage with an alloy and removes the dry etching residue on the surface of the workpiece.
- Comparative Example 43 (Invention described in Patent Document 20)
- the semiconductor elements shown in FIGS. 3 and 4 were cleaned with a cleaning solution (Table 8, cleaning solution 2AL) containing 0.25% by mass of ammonium fluoride, 0.06% by mass of gluconic acid, and 99.69% by mass of water.
- Table 9 shows cleaning conditions and evaluation results.
- this cleaning liquid can suppress damage to the material containing titanium, the material containing tungsten, and copper, the dry etching residue cannot be removed, and the Low-k film is damaged. Therefore, the 2AL cleaning liquid suppresses the damage of the material containing the low-k film and titanium in the manufacturing process of the semiconductor device that is the subject of the present invention, and removes the dry etching residue on the surface of the object to be processed.
- a low-k film and a material containing tungsten to suppress damage and remove dry etching residues on the surface of the object to be processed and a low-k film, a material containing titanium, a material containing tungsten, and copper or copper It turns out that it cannot be used for the purpose of this application which suppresses damage with an alloy and removes the dry etching residue on the surface of the workpiece.
- Comparative Example 44 (Invention described in Patent Document 21) A cleaning solution containing 1% by weight of butylamine, 4% by weight of hydroxylamine sulfate, 2.8% by weight of tetramethylammonium hydroxide, 2% by weight of citric acid, 5% by weight of dipropylene glycol, and 85.2% by weight of water (Table 8) The semiconductor element shown in FIGS. 3 and 4 was cleaned with a cleaning solution 2AM). Table 9 shows cleaning conditions and evaluation results. Although this cleaning liquid can suppress the damage of the material containing titanium and the material containing tungsten, the dry etching residue cannot be removed, and the Low-k film and copper are damaged.
- the 2AM cleaning liquid suppresses the damage of the material containing the low-k film and titanium in the manufacturing process of the semiconductor device that is the subject of the present invention, and removes the dry etching residue on the surface of the object to be processed.
- a low-k film and a material containing tungsten to suppress damage and remove dry etching residues on the surface of the object to be processed, and a low-k film, a material containing titanium, a material containing tungsten, and copper or copper It turns out that it cannot be used for the purpose of this application which suppresses damage with an alloy and removes the dry etching residue on the surface of the workpiece.
- FIG. 5, FIG. 6, FIG. 7 and FIG. 8 show a cleaning liquid (pH value 5, Table 8, cleaning liquid 2AN) containing 6% by mass of hydrogen peroxide, 0.003% by mass of barium nitrate, and 93.997% by mass of water.
- the indicated semiconductor element was cleaned.
- Table 9 shows cleaning conditions and evaluation results. This cleaning solution can remove the dry etching residue and can suppress damage to the low-k film, the material containing titanium, the material containing tungsten, and copper, but the photoresist cannot be removed.
- the 2AN cleaning solution suppresses damage to the material including the low-k film and titanium in the manufacturing process of the semiconductor device that is the subject of the present invention, and removes the dry etching residue and the photoresist on the surface of the object to be processed.
- Including the purpose of the present application, and the purpose of the present invention to suppress dry etching residue and photoresist on the surface of the object to be processed by suppressing damage to the material including the low-k film and tungsten, and the material including tungsten including the low-k film and titanium It can be seen that it cannot be used for the purpose of the present application, which suppresses damage between the material and copper or copper alloy and removes dry etching residue and photoresist on the surface of the object to be processed.
- Comparative Example 46 Tetramethylammonium hydroxide 3.35% by mass, trans-1,2-diaminocyclohexane-N, N, N ′, N′-tetraacetic acid monohydrate 0.11% by mass, hydrogen peroxide 1.64% by mass
- the semiconductor elements shown in FIGS. 1, 2, 3 and 4 were cleaned with a cleaning liquid (Table 8, cleaning liquid 2AO) containing 0.23% by mass of hexafluorosilicic acid and 94.67% by mass of water.
- Table 9 shows cleaning conditions and evaluation results. Although this cleaning liquid can suppress the damage of the material containing titanium, the dry etching residue cannot be removed, and the material containing the low-k film and tungsten and copper are damaged.
- the 2AO cleaning solution suppresses damage to the material containing the low-k film and titanium in the manufacturing process of the semiconductor element that is the subject of the present invention, and removes the dry etching residue on the surface of the object to be processed.
- a low-k film and a material containing tungsten to suppress damage and remove dry etching residues on the surface of the object to be processed, and a low-k film, a material containing titanium, a material containing tungsten, and copper or copper It turns out that it cannot be used for the purpose of this application which suppresses damage with an alloy and removes the dry etching residue on the surface of the workpiece.
- FIG. 1 shows a cleaning liquid (Table 8, cleaning liquid 2AP) containing 0.6% by mass of potassium hydroxide, 6% by mass of hydrogen peroxide, 0.5% by mass of hexafluorosilicic acid, and 92.9% by mass of water.
- Table 8 shows cleaning conditions and evaluation results.
- This cleaning solution can remove the dry etching residue and suppress copper damage, but damages the material containing the Low-k film and titanium and the material containing tungsten. Therefore, the cleaning solution of 2AP suppresses damage to the material containing the low-k film and titanium in the manufacturing process of the semiconductor element that is the subject of the present invention, and removes the dry etching residue on the surface of the object to be processed.
- a low-k film and a material containing tungsten to suppress damage and remove dry etching residues on the surface of the object to be processed and a low-k film, a material containing titanium, a material containing tungsten, and copper or copper It turns out that it cannot be used for the purpose of this application which suppresses damage with an alloy and removes the dry etching residue on the surface of the workpiece.
- Comparative Example 48 Tetramethylammonium hydroxide 2% by mass, ammonium carbonate 5% by mass, hydrogen peroxide 7.5% by mass, surfactant A (H (OCH 2 CH 2 ) 3 — (OCH 2 CH 2 CH 2 ) 5 — (OCH 2 CH 2 ) 3 H)
- surfactant A H (OCH 2 CH 2 ) 3 — (OCH 2 CH 2 CH 2 ) 5 — (OCH 2 CH 2 ) 3 H
- the semiconductor shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4 in a cleaning liquid (Table 8, cleaning liquid 2AQ) containing 0.5% by mass, citric acid 10% by mass and water 75% by mass was cleaned. Table 9 shows cleaning conditions and evaluation results.
- this cleaning liquid can suppress the damage of the Low-k film, the dry etching residue cannot be removed, and the material containing titanium, the material containing tungsten, and copper are damaged. Therefore, the 2AQ cleaning solution suppresses damage to the material containing the low-k film and titanium in the manufacturing process of the semiconductor element that is the subject of the present invention, and removes the dry etching residue on the surface of the object to be processed.
- a low-k film and a material containing tungsten to suppress damage and remove dry etching residues on the surface of the object to be processed and a low-k film, a material containing titanium, a material containing tungsten, and copper or copper It turns out that it cannot be used for the purpose of this application which suppresses damage with an alloy and removes the dry etching residue on the surface of the workpiece.
- FIG. 1 shows a cleaning liquid (pH: 6.3, Table 8, cleaning liquid 2AR) containing 0.5% by mass of nitric acid, 6% by mass of hydrogen peroxide, 0.5% by mass of ammonium carbonate, and 93% by mass of water.
- cleaning liquid 2AR cleaning liquid
- Table 9 shows cleaning conditions and evaluation results.
- This cleaning solution can remove dry etching residues and suppress damage to the Low-k film and copper, but damages the material containing titanium and the material containing tungsten. Therefore, the 2AR cleaning liquid suppresses the damage of the material containing the low-k film and titanium and removes the dry etching residue on the surface of the object to be processed in the manufacturing process of the semiconductor device that is the subject of the present invention.
- a low-k film and a material containing tungsten to suppress damage and remove dry etching residues on the surface of the object to be processed and a low-k film, a material containing titanium, a material containing tungsten, and copper or copper It turns out that it cannot be used for the purpose of this application which suppresses damage with an alloy and removes the dry etching residue on the surface of the workpiece.
- Oxidizing agent I peroxide or perchloric acid or perchlorate
- KOH potassium hydroxide
- TMAH tetramethylammonium hydroxide
- mCPBA metachloroperbenzoic acid
- TBHP tert-butyl hydroperoxide
- K 2 CO 3 potassium carbonate
- LiOH Lithium hydroxide
- NaOH Sodium hydroxide
- CsOH Cesium hydroxide
- Removal state I Removal state of dry etching residue 3 Damage II: Damage damage of material 1 containing titanium III: Damage of Low-k film 2
- Removal state I Removal state of dry etching residue 3 Damage II: Damage damage of Low-k film 2 IV: Damage of material 4 containing tungsten
- Removal state I Removal state of dry etching residue 3
- Damage II Damage damage of material 1 containing titanium III: Damage damage of low-k film 2
- IV Damage damage of material 4 containing tungsten
- V Damage of copper 5
- Removal state I Removal state of dry etching residue 3
- Removal state VI Removal state of photoresist 8 Damage II: Damage damage of material 1 containing titanium III: Damage damage of low-k film 2 IV: Damage of material 4 containing tungsten damage
- Removal state I Removal state of dry etching residue 3
- Damage II Damage damage of material 1 containing titanium
- IV Damage damage of material 4 containing tungsten
- V Damage removal state of copper 5
- Oxidizing agent I peroxide or perchloric acid or perchlorate
- KOH potassium hydroxide
- TMAH tetramethylammonium hydroxide
- mCPBA metachloroperbenzoic acid
- TBHP tert-butyl hydroperoxide
- TMAH Tetramethylammonium hydroxide
- KOH Potassium hydroxide
- NaOH Sodium hydroxide
- DMSO Dimethyl sulfoxide Esocard O / 12; [Oleylbis (2-hydroxyethyl) methylammonium-bis (trifluoromethanesulfonyl) imide] (manufactured by Lion Corporation) )
- TEAH Tetraethylammonium hydroxide
- DGME Diethylene glycol monomethyl ether
- DGBE Diethylene glycol monobutyl ether
- CyDTA trans-1,2-diaminocyclohexane-N, N, N ′, N′-tetraacetic acid monohydrate surfactant A: Substance of chemical structure H (OCH 2 CH 2 ) 3- (OCH 2 CH 2 CH 2 ) 5- (OCH 2 CH 2 ) 3 H
- Removal state I Removal state of dry etching residue 3
- Damage II Damage damage of material 1 containing titanium III: Damage damage of low-k film 2
- IV Damage damage of material 4 containing tungsten
- V Damage removal state of copper 5
- VI Photoresist 8 removal state 2AN pH is 5 The pH of 2AR is 6.3 -: Not implemented
- the cleaning liquid and the cleaning method of the present invention in the semiconductor element manufacturing process, at least one selected from a material containing titanium and a material containing tungsten and damage to the low-k film are suppressed, and the surface of the object to be processed It is possible to remove the photoresist and dry etching residue, and a high-precision and high-quality semiconductor element can be manufactured with a high yield, which is industrially useful.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Detergent Compositions (AREA)
- Weting (AREA)
- Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
Abstract
Description
デザインルールの微細化に伴い、トランジスタのゲート絶縁膜の薄膜化が限界に近づき、ゲート絶縁膜に高誘電率膜が使用されるようになってきた。この高誘電率膜のゲート材料には従来使用されていた多結晶シリコンではしきい電圧の制御が困難であることから、チタンやタングステンを含む材料が用いられる場合がある。また、アルミニウム配線において、異なる層の配線を繋ぐコンタクトプラグにはタングステンを含む材料が用いられる。
また、本発明の別の目的は、半導体素子の製造工程において、少なくともLow-k膜およびタングステンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣およびフォトレジストを除去する洗浄液、およびそれを用いた洗浄方法を提供することである。
更に、本発明の別の目的は、半導体素子の製造工程において、少なくとも、Low-k膜、チタンを含む材料、およびタングステンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣およびフォトレジストを除去する洗浄液、およびそれを用いた洗浄方法を提供することである。
<1> 低誘電率膜(Low-k膜)と、10原子%以上のチタンを含む材料および10原子%以上のタングステンを含む材料から選択される1以上とを有する半導体素子の表面のドライエッチング残渣およびフォトレジストを除去する洗浄液であって、過酸化物、過塩素酸および過塩素酸塩からなる群より選択される1種以上の酸化剤0.002~50質量%、アルカリ土類金属化合物0.000001~5質量%および水を含む、前記洗浄液である。
<2> 前記洗浄液のpH値が3~14である上記<1>に記載の洗浄液である。
<3> 前記過酸化物が、過酸化水素、過酸化尿素、メタクロロ過安息香酸、tert-ブチルヒドロペルオキシド、過酢酸、ジ-tert-ブチルペルオキシド、過酸化ベンゾイル、過酸化アセトン、メチルエチルケトンペルオキシド、ヘキサメチレントリペルオキシド、およびクメンヒドロペルオキシドからなる群より選択される少なくとも1種以上である上記<1>または<2>に記載の洗浄液である。
<4> 前記過塩素酸塩が、過塩素酸アンモニウム、過塩素酸カリウム、過塩素酸カルシウム、過塩素酸マグネシウム、過塩素酸銀、過塩素酸ナトリウム、過塩素酸バリウム、過塩素酸リチウム、過塩素酸亜鉛、過塩素酸アセチルコリン、過塩素酸鉛、過塩素酸ルビジウム、過塩素酸セシウム、過塩素酸カドミウム、過塩素酸鉄、過塩素酸アルミニウム、過塩素酸ストロンチウム、過塩素酸テトラブチルアンモニウム、過塩素酸ランタン、過塩素酸インジウム、および過塩素酸テトラ-n-ヘキシルアンモニウムからなる群より選択される少なくとも1種以上である上記<1>または<2>に記載の洗浄液である。
<5> 前記酸化剤が過酸化水素であり、前記洗浄液のpHが3~14である上記<1>に記載の洗浄液である。
<6> 前記洗浄液のpH値が7~14である上記<1>から<5>のいずれかに記載の洗浄液である。
<7> 前記10原子%以上のチタンを含む材料が、酸化チタン、窒化チタン、チタン、およびチタンシリサイドからなる群より選択される少なくとも1種以上を含む上記<1>から<6>のいずれかに記載の洗浄液である。
<8> 前記10原子%以上のタングステンを含む材料が、酸化タングステン、窒化タングステン、タングステン、およびタングステンシリサイドからなる群より選択される少なくとも1種以上を含む上記<1>から<6>のいずれかに記載の洗浄液である。
<9> 前記アルカリ土類金属化合物が、カルシウム化合物、ストロンチウム化合物、およびバリウム化合物からなる群より選択される少なくとも1種以上である上記<1>から<8>のいずれかに記載の洗浄液である。
<10> 低誘電率膜(Low-k膜)と、10原子%以上のチタンを含む材料および10原子%以上のタングステンを含む材料から選択される1以上とを有する半導体素子の表面のドライエッチング残渣およびフォトレジストを除去する洗浄方法であって、上記<1>から<9>のいずれかに記載の洗浄液を用いることを特徴とする、前記洗浄方法である。
本発明において、チタンの含有量は、X線光電子分光法(XPS)のイオンスパッタ法により、対象となるチタンを含む材料のチタン原子の構成比を測定することにより調べることができる。チタンを含む材料の表面近傍は酸化されることで酸素原子の構成比が材料の内部よりも高くなる場合がある。そのため、チタンと酸素の原子の構成比が一定となるまで、イオンスパッタによりチタンを含む材料の表面をエッチングし、イオンスパッタにより露出したチタンを含む材料の内部のチタン原子の構成比を測定する。測定装置としては、完全自動XPS分析装置K-Alpha(サーモフィッシャーサイエンティフィック株式会社製)を用いることができる。
チタンを含む材料の具体例は酸化チタン、窒化チタン、チタン、およびチタンシリサイドであり、好ましくは酸化チタン、窒化チタン、およびチタンである。しかし、チタンを含む材料は10原子%以上のチタンを含む材料であれば、これらに限定されるものではない。
本発明において、タングステンの含有量は、前述のようにXPSのイオンスパッタ法により、対象となるタングステンを含む材料のタングステン原子の構成比を測定することにより調べることができる。測定装置としては、完全自動XPS分析装置K-Alpha(サーモフィッシャーサイエンティフィック株式会社製)を用いることができる。
タングステンを含む材料の具体例は酸化タングステン、窒化タングステン、タングステン、およびタングステンシリサイドであり、好ましくは酸化タングステン、窒化タングステン、およびタングステンである。しかし、タングステンを含む材料は10原子%以上のタングステンを含む材料であれば、これらに限定されるものではない。
本発明者らは、洗浄液に含まれるアルカリ土類金属化合物が、チタンを含む材料およびタングステンを含む材料から選択される1以上に対して防食効果を示すことを初めて見出した。そのメカニズムは明らかになっていないが、アルカリ土類金属化合物がチタンまたはタングステンの表面に吸着し、洗浄液に含まれる過酸化水素などの酸化剤やアルカリがチタンまたはタングステンを侵食するのを防いでいると考えられる。
無機過酸化物は、水と反応し洗浄液中に過酸化水素を発生するので実質的に過酸化水素と同等である。そのため、洗浄液中に過酸化水素を発生させるために無機過酸化物を添加しても良い。無機過酸化物の具体例は、過酸化リチウム、過酸化カリウム、過酸化ナトリウム、過酸化ルビジウム、過酸化セシウム、過酸化ベリリウム、過酸化マグネシウム、過酸化カルシウム、過酸化ストロンチウム、過酸化バリウム、過酸化亜鉛、過酸化カドミウム、過酸化銅であるが、これらに限定されるものではない。
本発明に使用される過塩素酸または過塩素酸塩の具体例は、過塩素酸、過塩素酸アンモニウム、過塩素酸カリウム、過塩素酸カルシウム、過塩素酸マグネシウム、過塩素酸銀、過塩素酸ナトリウム、過塩素酸バリウム、過塩素酸リチウム、過塩素酸亜鉛、過塩素酸アセチルコリン、過塩素酸鉛、過塩素酸ルビジウム、過塩素酸セシウム、過塩素酸カドミウム、過塩素酸鉄、過塩素酸アルミニウム、過塩素酸ストロンチウム、過塩素酸テトラブチルアンモニウム、過塩素酸ランタン、過塩素酸インジウム、および過塩素酸テトラ-n-ヘキシルアンモニウムであるが、これらに限定されるものではない。これらの中でも、過塩素酸アンモニウムがより好ましい。これらは単独または2種類以上を組み合わせて配合できる。
本発明の洗浄方法は、必要に応じて超音波を併用することができる。
本発明の洗浄液を使用する時間は0.1~120分、好ましくは0.5~60分の範囲であり、エッチングの条件や使用される半導体素子により適宜選択すればよい。
本発明の洗浄液を使用した後のリンス液としては、アルコールのような有機溶剤を使用することもできるが、水でリンスするだけでも十分である。
一般的なバリアメタルとして、タンタル、窒化タンタル、チタン、窒化チタン、ルテニウム、マンガン、マグネシウムならびにこれらの酸化物が使用される。バリアメタルはこれらに限定されるものではない。
半導体素子の洗浄・除去処理前後の状況は、以下のSEM(走査型電子顕微鏡)装置を用い、倍率は100,000倍で観察した。
測定機器;株式会社日立ハイテクノロジーズ社製、超高分解能電界放出形走査電子顕微鏡SU9000。
判定;
洗浄・除去後の判定はSEM観察後、以下の基準に従った。
I. ドライエッチング残渣の除去状態
E:ドライエッチング残渣が完全に除去された。
G:ドライエッチング残渣が概ね除去された。
P:ドライエッチング残渣の除去が不十分であった。
EとGを合格とした。
II. チタンを含む材料のダメージ
E:洗浄前と比べてチタンを含む材料に変化が見られなかった。
G:チタンを含む材料の表面に少し荒れが見られた。
P:チタンを含む材料に剥がれまたは形状の変化が見られた。
EとGを合格とした。
III. Low-k膜のダメージ
E:洗浄前と比べてLow-k膜に変化が見られなかった。
G:Low-k膜の表面に少し荒れが見られた。
P:Low-k膜が大きくくぼんでいた。
EとGを合格とした。
IV. タングステンを含む材料のダメージ
E:洗浄前と比べてタングステンを含む材料に変化が見られなかった。
G:タングステンを含む材料の表面に少し荒れが見られた。
P:タングステンを含む材料に大きな穴が見られた。
EとGを合格とした。
V. 銅のダメージ
E:洗浄前と比べて銅に変化が見られなかった。
G:銅の表面に少し荒れが見られた。
P:洗浄前と比べて銅に変化が見られた。
EとGを合格とした。
VI. フォトレジストの除去状態
E:フォトレジストが完全に除去された。
G:フォトレジストが概ね除去された。
P:フォトレジストの除去が不十分であった。
EとGを合格とした。
試験には、図1~図8に示したような断面の配線構造を有する半導体素子を使用し、洗浄効果を調べた。所定の温度、時間で浸漬し、その後、超純水によるリンス、乾燥窒素ガス噴射による乾燥を行った。洗浄後の半導体素子をSEMで観察することにより、ドライエッチング残渣またはフォトレジストの除去状態と各材料のダメージを判断した。試験に使用したチタンを含む材料は酸化チタンであり、30原子%のチタンを含んでいた。また、試験に使用したタングステンを含む材料は酸化タングステンであり、40原子%のタングステンを含んでいた。
なお、チタンの含有量は、上述した通り、X線光電子分光法(XPS)のイオンスパッタ法により測定した。また、タングステンの含有量も、上述した通り、XPSのイオンスパッタ法により測定した。いずれも測定装置としては、完全自動XPS分析装置K-Alpha(サーモフィッシャーサイエンティフィック株式会社製)を用いた。
表1に示した本発明の洗浄液で図1に示した半導体素子を洗浄した結果を表2に示す。実施例1~22においては、チタンを含む材料1とLow-k膜2のダメージを防ぎながら、ドライエッチング残渣3を完全に除去していることがわかる。
表1に示した本発明の洗浄液で図2に示した半導体素子を洗浄した結果を表3に示す。実施例23~41においては、タングステンを含む材料4とLow-k膜2のダメージを防ぎながら、ドライエッチング残渣3を完全に除去していることがわかる。
表1に示した本発明の洗浄液で図3、図4に示した半導体素子を洗浄した結果を表4に示す。実施例42~59においては、チタンを含む材料1とタングステンを含む材料4と銅5とLow-k膜2のダメージを防ぎながら、ドライエッチング残渣3を完全に除去していることがわかる。
表1に示した本発明の洗浄液で図5、図6、図7に示した半導体素子を洗浄した結果を表5に示す。実施例60~62においては、フォトレジスト8を完全に除去していることがわかる。
表1に示した本発明の洗浄液で図5、図6、図7、図8に示した半導体素子を洗浄した結果を表6に示す。実施例63~79においては、フォトレジスト8を完全に除去していることがわかる。
実施例1~18で用いた洗浄液(表1、洗浄液1A~1R)の硝酸バリウムを添加しない洗浄液(表7、洗浄液2A~2R)で図1に示した半導体素子を洗浄した。表9に洗浄条件と洗浄結果を示す。比較例1~18に示す洗浄液2A~2Rに硝酸バリウムを加えた洗浄液(表1、洗浄液1A~1R)と比べ、ドライエッチング残渣3(図1)の除去性に差異はなかったが、チタンを含む材料1(図1)にはいずれもダメージが見られた。よって、2A~2Rの洗浄液は、本発明の対象である半導体素子の製造工程において、チタンを含む材料とLow-k膜のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる(表9)。また、これらと実施例19~22から、アルカリ土類金属化合物がドライエッチング残渣3の除去性を悪化させずにチタンを含む材料のダメージを抑制するのに有用であることがわかる。
実施例23~37で用いた洗浄液(表1、洗浄液1A、1B、1D~1J、1M~1R)の硝酸バリウムを添加しない洗浄液(表7、洗浄液2A、2B、2D~2J、2M~2R)で図2に示した半導体素子を洗浄した。表9に洗浄条件と洗浄結果を示した。比較例1、2、4~10、13~18に示す洗浄液2A、2B、2D~2J、2M~2Rに硝酸バリウムを加えた洗浄液(表1、洗浄液1A、1B、1D~1J、1M~1R)と比べ、ドライエッチング残渣3(図2)の除去性に差異はなかったが、タングステンを含む材料4(図2)にはいずれもダメージが見られた。よって、2A、2B、2D~2J、2M~2Rの洗浄液は、本発明の対象である半導体素子の製造工程において、タングステンを含む材料とLow-k膜のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる(表9)。また、これらと実施例38~41から、アルカリ土類金属化合物がドライエッチング残渣3の除去性を悪化させずにタングステンを含む材料のダメージを抑制するのに有用であることがわかる。
水酸化テトラメチルアンモニウム12質量%、過酸化水素5質量%、水酸化カリウム2質量%、トリエタノールアミン35質量%、および水46質量%を含む洗浄液(表8、洗浄液2S)で図1に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液で40分間洗浄すると、Low-k膜にダメージを与えずに、残渣を除去することはできるが、チタンを含む材料にダメージを与えた(比較例19)。チタンを含む材料のダメージを抑制するため、浸漬時間を20分間に短くすると、Low-k膜にダメージを与えないが、残渣は除去できず、チタンを含む材料にもダメージを与えた(比較例20)。よって、2Sの洗浄液は、本発明の対象である半導体素子の製造工程において、チタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
水酸化ナトリウム3質量%、過酸化水素2%質量、ポリプロピレングリコール(数平均分子量400)0.05質量%、および水94.95質量%を含む洗浄液(表8、洗浄液2T)で図1に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液で40分間洗浄すると、Low-k膜にダメージを与えずに、残渣を除去することはできるが、チタンを含む材料にダメージを与えた(比較例21)。チタンを含む材料のダメージを抑制するため、浸漬時間を20分間に短くすると、Low-k膜にダメージを与えないが、残渣を除去できず、チタンを含む材料にもダメージを与えた(比較例22)。よって、2Tの洗浄液は、本発明の対象である半導体素子の製造工程において、チタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
ヒドロキシルアミン硫酸塩4質量%、水酸化テトラメチルアンモニウム3.8質量%、クエン酸1質量%、2-メチルイミダゾール1質量%、および水90.2質量%を含む洗浄液(表8、洗浄液2U)で図1に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではチタンを含む材料のダメージを抑制することはできるが、残渣を除去することができず、Low-k膜にダメージを与えた。よって、2Uの洗浄液は、本発明の対象である半導体素子の製造工程において、チタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
ヒドロキシルアミン硫酸塩4質量%、水酸化テトラメチルアンモニウム4.7質量%、酢酸1質量%、ヒドロキシルエチルモルホリン2質量%、および水88.3質量%を含む洗浄液(表8、洗浄液2V)で図1に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではチタンを含む材料のダメージを抑制することはできるが、残渣を除去することができず、Low-k膜にダメージを与えた。よって、2Vの洗浄液は、本発明の対象である半導体素子の製造工程において、チタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
ヒドロキシルアミン15質量%、モノエタノールアミン10質量%、ジメチルスルホキシド55質量%、カテコール5質量%、および水15質量%を含む洗浄液(表8、洗浄液2W)で図1に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではチタンを含む材料のダメージを抑制することはできるが、残渣を除去することはできず、Low-k膜にダメージを与えた。よって、2Wの洗浄液は、本発明の対象である半導体素子の製造工程において、チタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
リン酸1.35質量%、塩酸1質量%、水酸化テトラメチルアンモニウム5質量%、ラウリルジアミノエチルグリシンナトリウム0.01質量%、および水92.64質量%を含む洗浄液(表8、洗浄液2X)で図2に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではタングステンを含む材料のダメージを抑制することはできるが、残渣を除去することはできず、Low-k膜にダメージを与えた。よって、2Xの洗浄液は、本発明の対象である半導体素子の製造工程において、タングステンを含む材料とLow-k膜のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
過酸化水素 5質量%、アミノトリアゾール 0.01質量%、および水 94.99質量%を含む洗浄液(表8、洗浄液2Y)で図2に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液で30分間洗浄すると、Low-k膜にダメージを与えずに、残渣を除去することはできるが、タングステンを含む材料にダメージを与えた(比較例27)。タングステンを含む材料のダメージを抑制するため、浸漬時間を5分間に短くすると、Low-k膜にダメージを与えないが、残渣が除去できず、タングステンを含む材料にもダメージを与えた(比較例28)。よって、2Yの洗浄液は、本発明の対象である半導体素子の製造工程において、タングステンを含む材料とLow-k膜のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
過酸化水素15質量%、水酸化ベンジルトリメチルアンモニウム0.2質量%、エソカードO/12[オレイルビス(2-ヒドロキシエチル)メチルアンモニウム-ビス(トリフルオロメタンスルホニル)イミド](ライオン株式会社製)0.001質量%、および水84.799質量%を含む洗浄液(表8、洗浄液2Z)で図2に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液で30分間洗浄すると、Low-k膜にダメージを与えずに、残渣を除去することはできるが、タングステンを含む材料にダメージを与えた(比較例30)。タングステンを含む材料のダメージを抑制するため、浸漬時間を10分間に短くすると、Low-k膜にダメージを与えないが、残渣が除去できず、タングステンを含む材料にもダメージを与えた(比較例29)。よって、2Zの洗浄液は、本発明の対象である半導体素子の製造工程において、タングステンを含む材料とLow-k膜のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
水酸化テトラエチルアンモニウム10質量%、水酸化ナトリウム0.02質量%、2-エチル-4-メチルイミダゾール2質量%、ジメチルスルホキシド40質量%、および水47.98質量%を含む洗浄液(表8、洗浄液2AA)で図2に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではタングステンを含む材料のダメージを抑制することはできるが、残渣を除去することはできず、Low-k膜にダメージを与えた。よって、2AAの洗浄液は、本発明の対象である半導体素子の製造工程において、タングステンを含む材料とLow-k膜のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
過酸化水素14質量%、フッ酸0.3質量%、ジエチレングリコールモノメチルエーテル58.4質量%、ビニルイミダゾール1質量%、および水26.3質量%を含む洗浄液(表8、洗浄液2AB)で図2に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液で30分間洗浄すると、残渣を除去することはできるが、タングステンを含む材料とLow-k膜にダメージを与えた(比較例33)。タングステンを含む材料とLow-k膜のダメージを抑制するため、浸漬時間を10分間に短くすると、残渣が除去できず、タングステンを含む材料とLow-k膜にもダメージを与えた(比較例32)。よって、2ABの洗浄液は、本発明の対象である半導体素子の製造工程において、タングステンを含む材料とLow-k膜のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
フッ酸0.3質量%、ジエチレングリコールモノメチルエーテル60質量%、2-エチル-4-メチルイミダゾール1質量%、および水38.7質量%を含む洗浄液(表8、洗浄液2AC)で図2に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではタングステンを含む材料のダメージを抑制することはできるが、残渣を除去することはできず、Low-k膜にダメージを与えた。よって、2ACの洗浄液は、本発明の対象である半導体素子の製造工程において、タングステンを含む材料とLow-k膜のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
フッ酸0.1質量%、アミノプロピルトリメトキシシラン0.1質量%、ベンゾトリアゾール0.1質量%、エタノール1質量%、酢酸1質量%、および水97.7質量%を含む洗浄液(表8、洗浄液2AD)で図2に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではタングステンを含む材料のダメージを抑制することはできるが、残渣を除去することはできず、Low-k膜にダメージを与えた。よって、2ADの洗浄液は、本発明の対象である半導体素子の製造工程において、タングステンを含む材料とLow-k膜のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
ヒドロキシルアミン硫酸塩2質量%、水酸化テトラメチルアンモニウム3.4質量%、クエン酸2質量%、ソルビトール0.5質量%、および水92.1質量%を含む洗浄液(表8、洗浄液2AE)で図2に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではLow-k膜のダメージを抑制することはできるが、残渣を除去することはできず、タングステンを含む材料にダメージを与えた。よって、2AEの洗浄液は、本発明の対象である半導体素子の製造工程において、タングステンを含む材料とLow-k膜のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
酢酸アンモニウム5質量%、グリシン0.8質量%、アンモニア0.18質量%、ジメチルスルホキシド3.6質量%、および水90.42質量%を含む洗浄液(表8、洗浄液2AF)で図2に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではタングステンを含む材料のダメージを抑制することはできるが、残渣を除去することはできず、Low-k膜にダメージを与えた。よって、2AFの洗浄液は、本発明の対象である半導体素子の製造工程において、タングステンを含む材料とLow-k膜のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
水酸化カリウム4.5質量%、硝酸バリウム0.003質量%、および水95.497質量%を含む洗浄液(表8、洗浄液2AG)で図3、図4に示した半導体素子を洗浄した。配線材料として、図3の半導体素子ではタングステンが、図4の半導体素子では銅が使用されている。表9に洗浄条件と評価結果を示した。この洗浄液ではチタンを含む材料、タングステンを含む材料、及び銅のダメージを抑制することはできるが、残渣を除去することはできず、Low-k膜にダメージを与えた。よって、2AGの洗浄液は、本発明の対象である半導体素子の製造工程において、Low-k膜とチタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、およびLow-k膜とタングステンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、並びにLow-k膜とチタンを含む材料とタングステンを含む材料と銅または銅合金とのダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
N,N-ジエチルヒドロキシルアミン10質量%、ヒドロキシルアミン15質量%、ジメチルスルホキシド50質量%、カテコール10質量%、および水15質量%を含む洗浄液(表8、洗浄液2AH)で図3、図4に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではタングステンを含む材料のダメージを抑制することはできるが、ドライエッチング残渣を除去することはできず、Low-k膜、チタンを含む材料、銅にダメージを与えた。よって、2AHの洗浄液は、本発明の対象である半導体素子の製造工程において、Low-k膜とチタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、およびLow-k膜とタングステンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、並びにLow-k膜とチタンを含む材料とタングステンを含む材料と銅または銅合金とのダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
モノエタノールアミン10質量%、N,N-ジエチルヒドロキシルアミン10質量%、ジエチレングリコールモノブチルエーテル30質量%、ソルビトール10質量%、および水40質量%を含む洗浄液(表8、洗浄液2AI)で図3と図4に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではチタンを含む材料、タングステンを含む材料、及び銅のダメージを抑制することはできるが、ドライエッチング残渣を除去することはできず、Low-k膜にダメージを与えた。よって、2AIの洗浄液は、本発明の対象である半導体素子の製造工程において、Low-k膜とチタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、およびLow-k膜とタングステンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、並びにLow-k膜とチタンを含む材料とタングステンを含む材料と銅または銅合金とのダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
水酸化カリウム0.005質量%、水酸化テトラメチルアンモニウム10質量%、ジエチレングリコールモノメチルエーテル50質量%、ピラゾール0.1質量%、および水39.895%質量%を含む洗浄液(表8、洗浄液2AJ)で図3、図4に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではチタンを含む材料、タングステンを含む材料、及び銅のダメージを抑制することはできるが、ドライエッチング残渣を除去することはできず、Low-k膜にダメージを与えた。よって、2AJの洗浄液は、本発明の対象である半導体素子の製造工程において、Low-k膜とチタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、およびLow-k膜とタングステンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、並びにLow-k膜とチタンを含む材料とタングステンを含む材料と銅または銅合金とのダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
ベンゾトリアゾール0.1質量%、1,2,4-トリアゾール0.1質量%、フッ化アンモニウム5質量%、ホウ酸1質量%、および水93.8質量%を含む洗浄液(表8、洗浄液2AK)で図3と図4に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではチタンを含む材料、タングステンを含む材料、及び銅のダメージを抑制することはできるが、ドライエッチング残渣を除去することはできず、Low-k膜にダメージを与えた。よって、2AKの洗浄液は、本発明の対象である半導体素子の製造工程において、Low-k膜とチタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、およびLow-k膜とタングステンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、並びにLow-k膜とチタンを含む材料とタングステンを含む材料と銅または銅合金とのダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
フッ化アンモニウム0.25質量%、グルコン酸0.06質量%、および水99.69質量%を含む洗浄液(表8、洗浄液2AL)で図3、図4に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではチタンを含む材料、タングステンを含む材料、及び銅のダメージを抑制することはできるが、ドライエッチング残渣を除去することはできず、Low-k膜にダメージを与えた。よって、2ALの洗浄液は、本発明の対象である半導体素子の製造工程において、Low-k膜とチタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、およびLow-k膜とタングステンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、並びにLow-k膜とチタンを含む材料とタングステンを含む材料と銅または銅合金とのダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
ブチルアミン1質量%、ヒドロキシルアミン硫酸塩4質量%、水酸化テトラメチルアンモニウム2.8質量%、クエン酸2質量%、ジプロピレングリコール5質量%、および水85.2質量%を含む洗浄液(表8、洗浄液2AM)で図3と図4に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではチタンを含む材料、及びタングステンを含む材料のダメージを抑制することはできるが、ドライエッチング残渣を除去することはできず、Low-k膜、及び銅にダメージを与えた。よって、2AMの洗浄液は、本発明の対象である半導体素子の製造工程において、Low-k膜とチタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、およびLow-k膜とタングステンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、並びにLow-k膜とチタンを含む材料とタングステンを含む材料と銅または銅合金とのダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
過酸化水素6質量%、硝酸バリウム0.003質量%、および水93.997質量%を含む洗浄液(pH値は5、表8、洗浄液2AN)で図5、図6、図7および図8に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液はドライエッチング残渣を除去でき、Low-k膜、チタンを含む材料、タングステンを含む材料、及び銅のダメージを抑制することはできるが、フォトレジストを除去することはできなかった。よって、2ANの洗浄液は、本発明の対象である半導体素子の製造工程において、Low-k膜とチタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣およびフォトレジストを除去する本願目的、およびLow-k膜とタングステンを含む材料ダメージを抑制し、被処理物の表面のドライエッチング残渣およびフォトレジストを除去する本願目的、並びにLow-k膜とチタンを含む材料とタングステンを含む材料と銅または銅合金とのダメージを抑制し、被処理物の表面のドライエッチング残渣およびフォトレジストを除去する本願目的には使用できないことがわかる。
水酸化テトラメチルアンモニウム3.35質量%、trans-1,2-ジアミノシクロヘキサン-N,N,N‘,N’―四酢酸1水和物0.11質量%、過酸化水素1.64質量%、ヘキサフルオロケイ酸0.23質量%、および水94.67質量%を含む洗浄液(表8、洗浄液2AO)で図1、図2、図3および図4に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではチタンを含む材料のダメージを抑制することはできるが、ドライエッチング残渣を除去することはできず、Low-k膜とタングステンを含む材料および銅にダメージを与えた。よって、2AOの洗浄液は、本発明の対象である半導体素子の製造工程において、Low-k膜とチタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、およびLow-k膜とタングステンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、並びにLow-k膜とチタンを含む材料とタングステンを含む材料と銅または銅合金とのダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
水酸化カリウム0.6質量%、過酸化水素6質量%、ヘキサフルオロケイ酸0.5質量%、および水92.9質量%を含む洗浄液(表8、洗浄液2AP)で図1、図2、図3および図4に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではドライエッチング残渣を除去し、銅のダメージを抑制することはできるが、Low-k膜とチタンを含む材料、およびタングステンを含む材料にダメージを与えた。よって、2APの洗浄液は、本発明の対象である半導体素子の製造工程において、Low-k膜とチタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、およびLow-k膜とタングステンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、並びにLow-k膜とチタンを含む材料とタングステンを含む材料と銅または銅合金とのダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
水酸化テトラメチルアンモニウム2質量%、炭酸アンモニウム5質量%、過酸化水素7.5質量%、界面活性剤A(H(OCH2CH2)3-(OCH2CH2CH2)5-(OCH2CH2)3H)0.5質量%、クエン酸10質量%、および水75質量%を含む洗浄液(表8、洗浄液2AQ)で図1、図2、図3および図4に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではLow-k膜のダメージを抑制することはできるが、ドライエッチング残渣を除去できず、チタンを含む材料とタングステンを含む材料および銅にダメージを与えた。よって、2AQの洗浄液は、本発明の対象である半導体素子の製造工程において、Low-k膜とチタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、およびLow-k膜とタングステンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、並びにLow-k膜とチタンを含む材料とタングステンを含む材料と銅または銅合金とのダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
硝酸0.5質量%、過酸化水素6質量%、炭酸アンモニウム0.5質量%、および水93質量%を含む洗浄液(pHは6.3、表8、洗浄液2AR)で図1、図2、図3および図4に示した半導体素子を洗浄した。表9に洗浄条件と評価結果を示した。この洗浄液ではドライエッチング残渣を除去でき、Low-k膜、及び銅のダメージを抑制することはできるが、チタンを含む材料とタングステンを含む材料にダメージを与えた。よって、2ARの洗浄液は、本発明の対象である半導体素子の製造工程において、Low-k膜とチタンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、およびLow-k膜とタングステンを含む材料のダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的、並びにLow-k膜とチタンを含む材料とタングステンを含む材料と銅または銅合金とのダメージを抑制し、被処理物の表面のドライエッチング残渣を除去する本願目的には使用できないことがわかる。
KOH:水酸化カリウム
TMAH:水酸化テトラメチルアンモニウム
mCPBA:メタクロロ過安息香酸
TBHP:tert-ブチルヒドロペルオキシド
K2CO3:炭酸カリウム
LiOH:水酸化リチウム
NaOH:水酸化ナトリウム
CsOH:水酸化セシウム
ダメージII: チタンを含む材料1のダメージ
ダメージIII: Low-k膜2のダメージ
ダメージIV: タングステンを含む材料4のダメージ
ダメージV: 銅5のダメージ
除去状態VI:フォトレジスト8の除去状態
ダメージII: チタンを含む材料1のダメージ
ダメージIII: Low-k膜2のダメージ
ダメージIV: タングステンを含む材料4のダメージ
ダメージII: チタンを含む材料1のダメージ
ダメージIII: Low-k膜2のダメージ
ダメージIV: タングステンを含む材料4のダメージ
ダメージV: 銅5のダメージ
除去状態VI:フォトレジスト8の除去状態
KOH:水酸化カリウム
NaOH:水酸化ナトリウム
DMSO:ジメチルスルホキシド
エソカードO/12;[オレイルビス(2-ヒドロキシエチル)メチルアンモニウム‐ビス(トリフルオロメタンスルホニル)イミド](ライオン株式会社製)
TEAH:水酸化テトラエチルアンモニウム
DGME:ジエチレングリコールモノメチルエーテル
DGBE:ジエチレングリコールモノブチルエーテル
CyDTA:trans-1,2-ジアミノシクロヘキサン-N,N,N‘,N’―四酢酸1水和物
界面活性剤A:以下の化学構造の物質
H(OCH2CH2)3-(OCH2CH2CH2)5-(OCH2CH2)3H
2:層間絶縁膜(Low-k膜)
3:ドライエッチング残渣
4:タングステンを含む材料
5:銅
6:バリアメタル
7:バリア絶縁膜
8:フォトレジスト
Claims (10)
- 低誘電率膜(Low-k膜)と、10原子%以上のチタンを含む材料および10原子%以上のタングステンを含む材料から選択される1以上とを有する半導体素子の表面のドライエッチング残渣およびフォトレジストを除去する洗浄液であって、過酸化物、過塩素酸および過塩素酸塩からなる群より選択される1種以上の酸化剤0.002~50質量%、アルカリ土類金属化合物0.000001~5質量%および水を含む、前記洗浄液。
- 前記洗浄液のpH値が3~14である請求項1に記載の洗浄液。
- 前記過酸化物が、過酸化水素、過酸化尿素、メタクロロ過安息香酸、tert-ブチルヒドロペルオキシド、過酢酸、ジ-tert-ブチルペルオキシド、過酸化ベンゾイル、過酸化アセトン、メチルエチルケトンペルオキシド、ヘキサメチレントリペルオキシド、およびクメンヒドロペルオキシドからなる群より選択される少なくとも1種以上である請求項1または2に記載の洗浄液。
- 前記過塩素酸塩が、過塩素酸アンモニウム、過塩素酸カリウム、過塩素酸カルシウム、過塩素酸マグネシウム、過塩素酸銀、過塩素酸ナトリウム、過塩素酸バリウム、過塩素酸リチウム、過塩素酸亜鉛、過塩素酸アセチルコリン、過塩素酸鉛、過塩素酸ルビジウム、過塩素酸セシウム、過塩素酸カドミウム、過塩素酸鉄、過塩素酸アルミニウム、過塩素酸ストロンチウム、過塩素酸テトラブチルアンモニウム、過塩素酸ランタン、過塩素酸インジウム、および過塩素酸テトラ-n-ヘキシルアンモニウムからなる群より選択される少なくとも1種以上である請求項1または2に記載の洗浄液。
- 前記酸化剤が過酸化水素であり、前記洗浄液のpHが3~14である請求項1に記載の洗浄液。
- 前記洗浄液のpH値が7~14である請求項1から5のいずれかに記載の洗浄液。
- 前記10原子%以上のチタンを含む材料が、酸化チタン、窒化チタン、チタン、およびチタンシリサイドからなる群より選択される少なくとも1種以上を含む請求項1から6のいずれかに記載の洗浄液。
- 前記10原子%以上のタングステンを含む材料が、酸化タングステン、窒化タングステン、タングステン、およびタングステンシリサイドからなる群より選択される少なくとも1種以上を含む請求項1から6のいずれかに記載の洗浄液。
- 前記アルカリ土類金属化合物が、カルシウム化合物、ストロンチウム化合物、およびバリウム化合物からなる群より選択される少なくとも1種以上である請求項1から8のいずれかに記載の洗浄液。
- 低誘電率膜(Low-k膜)と、10原子%以上のチタンを含む材料および10原子%以上のタングステンを含む材料から選択される1以上とを有する半導体素子の表面のドライエッチング残渣およびフォトレジストを除去する洗浄方法であって、請求項1から9のいずれかに記載の洗浄液を用いることを特徴とする、前記洗浄方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201580057475.7A CN107148664B (zh) | 2014-11-13 | 2015-10-02 | 用于清洗半导体元件的包含碱土金属的清洗液、和使用其的半导体元件的清洗方法 |
US15/522,221 US10377978B2 (en) | 2014-11-13 | 2015-10-02 | Alkaline earth metal-containing cleaning solution for cleaning semiconductor element, and method for cleaning semiconductor element using same |
JP2016558930A JP6589883B2 (ja) | 2014-11-13 | 2015-10-02 | 半導体素子を洗浄するためのアルカリ土類金属を含む洗浄液、およびそれを用いた半導体素子の洗浄方法 |
KR1020177008637A KR102388074B1 (ko) | 2014-11-13 | 2015-10-02 | 반도체소자를 세정하기 위한 알칼리토류 금속을 포함하는 세정액, 및 이것을 이용한 반도체 소자의 세정방법 |
EP15858769.1A EP3220408B1 (en) | 2014-11-13 | 2015-10-02 | Use of alkaline earth metal-containing cleaning solution for cleaning semiconductor element |
IL252101A IL252101B (en) | 2014-11-13 | 2017-05-04 | A composition for cleaning semi-conductor components containing a trace metal alkali, and a method for cleaning semi-conductor components that uses it |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014230637 | 2014-11-13 | ||
JP2014-230637 | 2014-11-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016076034A1 true WO2016076034A1 (ja) | 2016-05-19 |
Family
ID=55954127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2015/078078 WO2016076034A1 (ja) | 2014-11-13 | 2015-10-02 | 半導体素子を洗浄するためのアルカリ土類金属を含む洗浄液、およびそれを用いた半導体素子の洗浄方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US10377978B2 (ja) |
EP (1) | EP3220408B1 (ja) |
JP (1) | JP6589883B2 (ja) |
KR (1) | KR102388074B1 (ja) |
CN (1) | CN107148664B (ja) |
IL (1) | IL252101B (ja) |
TW (1) | TWI668305B (ja) |
WO (1) | WO2016076034A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180135472A (ko) * | 2016-06-02 | 2018-12-20 | 후지필름 가부시키가이샤 | 처리액, 기판의 세정 방법 및 레지스트의 제거 방법 |
WO2019073931A1 (ja) * | 2017-10-10 | 2019-04-18 | 三菱ケミカル株式会社 | 洗浄液、洗浄方法及び半導体ウェハの製造方法 |
CN113150878A (zh) * | 2021-03-25 | 2021-07-23 | 深圳市点石源水处理技术有限公司 | 一种ic载板去膜剂及其应用 |
WO2023145826A1 (ja) * | 2022-01-31 | 2023-08-03 | 花王株式会社 | 樹脂マスクの剥離方法 |
WO2024128210A1 (ja) * | 2022-12-12 | 2024-06-20 | 三菱瓦斯化学株式会社 | フォトレジスト除去用組成物およびフォトレジストの除去方法 |
WO2024128209A1 (ja) * | 2022-12-12 | 2024-06-20 | 三菱瓦斯化学株式会社 | フォトレジスト除去用組成物およびフォトレジストの除去方法 |
WO2024128211A1 (ja) * | 2022-12-12 | 2024-06-20 | 三菱瓦斯化学株式会社 | フォトレジスト除去用組成物およびフォトレジストの除去方法 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6555273B2 (ja) | 2014-11-13 | 2019-08-07 | 三菱瓦斯化学株式会社 | タングステンを含む材料のダメージを抑制した半導体素子の洗浄液、およびこれを用いた半導体素子の洗浄方法 |
KR102405631B1 (ko) * | 2014-11-13 | 2022-06-07 | 미쯔비시 가스 케미칼 컴파니, 인코포레이티드 | 탄탈을 포함하는 재료의 데미지를 억제한 반도체소자의 세정액, 및 이를 이용한 세정방법 |
US11035044B2 (en) * | 2017-01-23 | 2021-06-15 | Versum Materials Us, Llc | Etching solution for tungsten and GST films |
CN110249041A (zh) * | 2017-02-10 | 2019-09-17 | 富士胶片电子材料美国有限公司 | 清洗制剂 |
CN107357143B (zh) * | 2017-07-25 | 2018-06-19 | 上海新阳半导体材料股份有限公司 | 一种清洗剂、其制备方法和应用 |
EP3761345A4 (en) * | 2018-03-02 | 2021-04-28 | Mitsubishi Gas Chemical Company, Inc. | COMPOSITION WITH SUPPRESSED ALUMINUM DAMAGE AND PROCESS FOR MANUFACTURING A SEMICONDUCTOR SUBSTRATE THEREFORE |
CN109022176B (zh) * | 2018-09-19 | 2020-08-11 | 广德通灵电子有限公司 | 一种电路板用清洗剂及其制备方法 |
KR20220075230A (ko) * | 2019-09-27 | 2022-06-07 | 버슘머트리얼즈 유에스, 엘엘씨 | 에칭 잔류물을 제거하기 위한 조성물, 사용 방법 및 이의 용도 |
JP7399008B2 (ja) * | 2020-03-26 | 2023-12-15 | ラピスセミコンダクタ株式会社 | 半導体装置及び半導体装置の製造方法 |
CN116970446B (zh) * | 2023-09-22 | 2024-01-09 | 山东天岳先进科技股份有限公司 | 碳化硅单晶材料amb覆铜的前处理溶液、产品及应用 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003330205A (ja) * | 2002-05-17 | 2003-11-19 | Mitsubishi Gas Chem Co Inc | レジスト剥離液 |
JP2009069505A (ja) * | 2007-09-13 | 2009-04-02 | Tosoh Corp | レジスト除去用洗浄液及び洗浄方法 |
Family Cites Families (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3738651A1 (de) * | 1987-11-13 | 1989-05-24 | Wacker Chemitronic | Verfahren zur hydrophilierenden und/oder kittreste entfernenden oberflaechenbehandlung von siliciumscheiben |
JPH08334905A (ja) | 1995-06-08 | 1996-12-17 | Tokyo Ohka Kogyo Co Ltd | レジスト用剥離液組成物 |
JP2911792B2 (ja) | 1995-09-29 | 1999-06-23 | 東京応化工業株式会社 | レジスト用剥離液組成物 |
JP3929518B2 (ja) | 1995-11-30 | 2007-06-13 | 東京応化工業株式会社 | レジスト用剥離液組成物 |
JP2001026890A (ja) | 1999-07-09 | 2001-01-30 | Asahi Kagaku Kogyo Co Ltd | 金属の腐食防止剤及びこれを含む洗浄液組成物およびこれを用いる洗浄方法 |
JP4138323B2 (ja) | 2002-01-30 | 2008-08-27 | 花王株式会社 | 剥離剤組成物 |
US20030148624A1 (en) * | 2002-01-31 | 2003-08-07 | Kazuto Ikemoto | Method for removing resists |
JP3955220B2 (ja) | 2002-03-05 | 2007-08-08 | 花王株式会社 | 洗浄方法 |
JP4122171B2 (ja) | 2002-04-22 | 2008-07-23 | Kisco株式会社 | レジスト残渣除去剤または半導体デバイスあるいは液晶デバイス製造プロセス用洗浄剤 |
KR101132533B1 (ko) | 2003-10-29 | 2012-04-03 | 아반토르 퍼포먼스 머티리얼스, 인크. | 알칼리성, 플라즈마 에칭/애싱 후 잔류물 제거제 및금속-할라이드 부식 억제제를 함유한 포토레지스트스트리핑 조성물 |
EP1580302A1 (en) * | 2004-03-23 | 2005-09-28 | JohnsonDiversey Inc. | Composition and process for cleaning and corrosion inhibition of surfaces of aluminum or colored metals and alloys thereof under alkaline conditions |
US8025811B2 (en) | 2006-03-29 | 2011-09-27 | Intel Corporation | Composition for etching a metal hard mask material in semiconductor processing |
JP4666515B2 (ja) | 2006-04-07 | 2011-04-06 | 花王株式会社 | 剥離剤組成物 |
US20100112728A1 (en) * | 2007-03-31 | 2010-05-06 | Advanced Technology Materials, Inc. | Methods for stripping material for wafer reclamation |
CN101681130A (zh) * | 2007-03-31 | 2010-03-24 | 高级技术材料公司 | 用于晶圆再生的材料剥除方法 |
JP5347237B2 (ja) | 2007-05-15 | 2013-11-20 | 三菱瓦斯化学株式会社 | 洗浄用組成物 |
JP5047712B2 (ja) | 2007-07-13 | 2012-10-10 | 東京応化工業株式会社 | 窒化チタン剥離液、及び窒化チタン被膜の剥離方法 |
JP2009075285A (ja) | 2007-09-20 | 2009-04-09 | Fujifilm Corp | 半導体デバイスの剥離液、及び、剥離方法 |
JP5379389B2 (ja) | 2008-03-05 | 2013-12-25 | 東京応化工業株式会社 | チタン除去液及びチタン被膜の除去方法 |
JP2009231354A (ja) | 2008-03-19 | 2009-10-08 | Fujifilm Corp | 半導体デバイス用洗浄液、および洗浄方法 |
EP2342738A4 (en) * | 2008-10-02 | 2013-04-17 | Advanced Tech Materials | USE OF TENSID / DETOINT MIXTURES FOR INCREASED METAL LOADING AND SURFACE PASSIVATION OF SILICON SUBSTRATES |
JP5498768B2 (ja) | 2009-12-02 | 2014-05-21 | 東京応化工業株式会社 | リソグラフィー用洗浄液及び配線形成方法 |
JP5574795B2 (ja) * | 2010-04-15 | 2014-08-20 | 富士フイルム株式会社 | 半導体基板の洗浄方法 |
JP5508130B2 (ja) | 2010-05-14 | 2014-05-28 | 富士フイルム株式会社 | 洗浄組成物、半導体装置の製造方法及び洗浄方法 |
JP5508158B2 (ja) | 2010-06-22 | 2014-05-28 | 富士フイルム株式会社 | 洗浄組成物、洗浄方法、及び、半導体装置の製造方法 |
JP2013533631A (ja) | 2010-07-16 | 2013-08-22 | アドバンスド テクノロジー マテリアルズ,インコーポレイテッド | エッチング後残渣を除去するための水性洗浄剤 |
JP2012046685A (ja) | 2010-08-30 | 2012-03-08 | Fujifilm Corp | 洗浄組成物、これを用いた洗浄方法及び半導体素子の製造方法 |
JP2012060050A (ja) | 2010-09-13 | 2012-03-22 | Fujifilm Corp | 洗浄組成物、これを用いた洗浄方法及び半導体素子の製造方法 |
JP5697945B2 (ja) * | 2010-10-27 | 2015-04-08 | 富士フイルム株式会社 | 多剤型半導体基板用洗浄剤、それを用いた洗浄方法及び半導体素子の製造方法 |
CN102486619A (zh) * | 2010-12-02 | 2012-06-06 | 台湾永光化学工业股份有限公司 | 清洗液组合物 |
US9587208B2 (en) | 2012-06-13 | 2017-03-07 | Mitsubishi Gas Chemical Company, Inc. | Cleaning liquid composition, method for cleaning semiconductor element, and method for manufacturing semiconductor element |
US10844322B2 (en) * | 2012-08-07 | 2020-11-24 | Ecolab Usa Inc. | High flashpoint alcohol-based cleaning, sanitizing and disinfecting composition and method of use on food contact surfaces |
WO2015119925A1 (en) * | 2014-02-05 | 2015-08-13 | Advanced Technology Materials, Inc. | Non-amine post-cmp compositions and method of use |
KR102405631B1 (ko) | 2014-11-13 | 2022-06-07 | 미쯔비시 가스 케미칼 컴파니, 인코포레이티드 | 탄탈을 포함하는 재료의 데미지를 억제한 반도체소자의 세정액, 및 이를 이용한 세정방법 |
KR102398801B1 (ko) | 2014-11-13 | 2022-05-17 | 미쯔비시 가스 케미칼 컴파니, 인코포레이티드 | 코발트의 데미지를 억제한 반도체 소자의 세정액, 및 이것을 이용한 반도체 소자의 세정방법 |
-
2015
- 2015-10-02 KR KR1020177008637A patent/KR102388074B1/ko active IP Right Grant
- 2015-10-02 JP JP2016558930A patent/JP6589883B2/ja active Active
- 2015-10-02 CN CN201580057475.7A patent/CN107148664B/zh active Active
- 2015-10-02 EP EP15858769.1A patent/EP3220408B1/en active Active
- 2015-10-02 WO PCT/JP2015/078078 patent/WO2016076034A1/ja active Application Filing
- 2015-10-02 US US15/522,221 patent/US10377978B2/en active Active
- 2015-10-07 TW TW104132924A patent/TWI668305B/zh active
-
2017
- 2017-05-04 IL IL252101A patent/IL252101B/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003330205A (ja) * | 2002-05-17 | 2003-11-19 | Mitsubishi Gas Chem Co Inc | レジスト剥離液 |
JP2009069505A (ja) * | 2007-09-13 | 2009-04-02 | Tosoh Corp | レジスト除去用洗浄液及び洗浄方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3220408A4 * |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180135472A (ko) * | 2016-06-02 | 2018-12-20 | 후지필름 가부시키가이샤 | 처리액, 기판의 세정 방법 및 레지스트의 제거 방법 |
US11225633B2 (en) | 2016-06-02 | 2022-01-18 | Fujifilm Corporation | Treatment liquid, method for washing substrate, and method for removing resist |
KR102111307B1 (ko) * | 2016-06-02 | 2020-05-15 | 후지필름 가부시키가이샤 | 처리액, 기판의 세정 방법 및 레지스트의 제거 방법 |
JPWO2019073931A1 (ja) * | 2017-10-10 | 2020-11-05 | 三菱ケミカル株式会社 | 洗浄液、洗浄方法及び半導体ウェハの製造方法 |
US11149231B2 (en) | 2017-10-10 | 2021-10-19 | Mitsubishi Chemical Corporation | Cleaning liquid, cleaning method, and method for producing semiconductor wafer |
WO2019073931A1 (ja) * | 2017-10-10 | 2019-04-18 | 三菱ケミカル株式会社 | 洗浄液、洗浄方法及び半導体ウェハの製造方法 |
JP7184044B2 (ja) | 2017-10-10 | 2022-12-06 | 三菱ケミカル株式会社 | 洗浄液、洗浄方法及び半導体ウェハの製造方法 |
CN113150878A (zh) * | 2021-03-25 | 2021-07-23 | 深圳市点石源水处理技术有限公司 | 一种ic载板去膜剂及其应用 |
WO2023145826A1 (ja) * | 2022-01-31 | 2023-08-03 | 花王株式会社 | 樹脂マスクの剥離方法 |
JP7490834B2 (ja) | 2022-01-31 | 2024-05-27 | 花王株式会社 | 樹脂マスクの剥離方法 |
WO2024128210A1 (ja) * | 2022-12-12 | 2024-06-20 | 三菱瓦斯化学株式会社 | フォトレジスト除去用組成物およびフォトレジストの除去方法 |
WO2024128209A1 (ja) * | 2022-12-12 | 2024-06-20 | 三菱瓦斯化学株式会社 | フォトレジスト除去用組成物およびフォトレジストの除去方法 |
WO2024128211A1 (ja) * | 2022-12-12 | 2024-06-20 | 三菱瓦斯化学株式会社 | フォトレジスト除去用組成物およびフォトレジストの除去方法 |
Also Published As
Publication number | Publication date |
---|---|
JP6589883B2 (ja) | 2019-10-16 |
CN107148664A (zh) | 2017-09-08 |
US10377978B2 (en) | 2019-08-13 |
TW201619362A (zh) | 2016-06-01 |
CN107148664B (zh) | 2020-12-08 |
US20170335248A1 (en) | 2017-11-23 |
EP3220408A1 (en) | 2017-09-20 |
IL252101B (en) | 2020-05-31 |
KR102388074B1 (ko) | 2022-04-19 |
EP3220408A4 (en) | 2018-05-30 |
TWI668305B (zh) | 2019-08-11 |
EP3220408B1 (en) | 2020-06-03 |
JPWO2016076034A1 (ja) | 2017-08-24 |
KR20170083026A (ko) | 2017-07-17 |
IL252101A0 (en) | 2017-07-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6589883B2 (ja) | 半導体素子を洗浄するためのアルカリ土類金属を含む洗浄液、およびそれを用いた半導体素子の洗浄方法 | |
JP6555273B2 (ja) | タングステンを含む材料のダメージを抑制した半導体素子の洗浄液、およびこれを用いた半導体素子の洗浄方法 | |
JP6555274B2 (ja) | コバルトのダメージを抑制した半導体素子の洗浄液、およびこれを用いた半導体素子の洗浄方法 | |
JP5626498B2 (ja) | 洗浄用液体組成物、半導体素子の洗浄方法、および半導体素子の製造方法 | |
JP6589882B2 (ja) | タンタルを含む材料のダメージを抑制した半導体素子の洗浄液、およびこれを用いた洗浄方法 | |
KR102533069B1 (ko) | 반도체소자의 세정용 액체 조성물, 반도체소자의 세정방법 및 반도체소자의 제조방법 | |
JP6733475B2 (ja) | 半導体素子の洗浄用液体組成物および半導体素子の洗浄方法、並びに半導体素子の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15858769 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2016558930 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20177008637 Country of ref document: KR Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2015858769 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 252101 Country of ref document: IL |
|
NENP | Non-entry into the national phase |
Ref country code: DE |