JP2017502491A - 低k誘電材料及び銅を含む半導体デバイス基板から金属ハードマスク及びその他の残留物を選択的に除去するための方法及び組成物 - Google Patents
低k誘電材料及び銅を含む半導体デバイス基板から金属ハードマスク及びその他の残留物を選択的に除去するための方法及び組成物 Download PDFInfo
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- JP2017502491A JP2017502491A JP2016521999A JP2016521999A JP2017502491A JP 2017502491 A JP2017502491 A JP 2017502491A JP 2016521999 A JP2016521999 A JP 2016521999A JP 2016521999 A JP2016521999 A JP 2016521999A JP 2017502491 A JP2017502491 A JP 2017502491A
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- ammonium
- acid
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- 239000000203 mixture Substances 0.000 title claims abstract description 218
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000004065 semiconductor Substances 0.000 title claims abstract description 27
- 239000000758 substrate Substances 0.000 title claims abstract description 22
- 239000010949 copper Substances 0.000 title claims description 67
- 229910052802 copper Inorganic materials 0.000 title claims description 43
- 229910052751 metal Inorganic materials 0.000 title claims description 30
- 239000002184 metal Substances 0.000 title claims description 30
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 24
- 239000003989 dielectric material Substances 0.000 title claims description 22
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 91
- -1 carboxylic acid compound Chemical class 0.000 claims abstract description 56
- 238000005530 etching Methods 0.000 claims abstract description 31
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 27
- 239000007800 oxidant agent Substances 0.000 claims abstract description 26
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 23
- 239000000956 alloy Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000002253 acid Substances 0.000 claims description 50
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical group OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 29
- 238000005260 corrosion Methods 0.000 claims description 27
- 230000007797 corrosion Effects 0.000 claims description 27
- 239000003112 inhibitor Substances 0.000 claims description 25
- 150000007513 acids Chemical class 0.000 claims description 21
- NGPGDYLVALNKEG-UHFFFAOYSA-N azanium;azane;2,3,4-trihydroxy-4-oxobutanoate Chemical compound [NH4+].[NH4+].[O-]C(=O)C(O)C(O)C([O-])=O NGPGDYLVALNKEG-UHFFFAOYSA-N 0.000 claims description 15
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims description 14
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 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 claims description 13
- 150000001735 carboxylic acids Chemical class 0.000 claims description 13
- LESFYQKBUCDEQP-UHFFFAOYSA-N tetraazanium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound N.N.N.N.OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O LESFYQKBUCDEQP-UHFFFAOYSA-N 0.000 claims description 13
- 239000004251 Ammonium lactate Substances 0.000 claims description 12
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 claims description 12
- 229940059265 ammonium lactate Drugs 0.000 claims description 12
- 235000019286 ammonium lactate Nutrition 0.000 claims description 12
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 claims description 11
- 239000005695 Ammonium acetate Substances 0.000 claims description 11
- 229940043376 ammonium acetate Drugs 0.000 claims description 11
- 235000019257 ammonium acetate Nutrition 0.000 claims description 11
- 239000001099 ammonium carbonate Substances 0.000 claims description 11
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 11
- RZOBLYBZQXQGFY-HSHFZTNMSA-N azanium;(2r)-2-hydroxypropanoate Chemical compound [NH4+].C[C@@H](O)C([O-])=O RZOBLYBZQXQGFY-HSHFZTNMSA-N 0.000 claims description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 10
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 10
- 150000001413 amino acids Chemical class 0.000 claims description 10
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical group [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- DEFVIWRASFVYLL-UHFFFAOYSA-N ethylene glycol bis(2-aminoethyl)tetraacetic acid Chemical compound OC(=O)CN(CC(O)=O)CCOCCOCCN(CC(O)=O)CC(O)=O DEFVIWRASFVYLL-UHFFFAOYSA-N 0.000 claims description 10
- YWYZEGXAUVWDED-UHFFFAOYSA-N triammonium citrate Chemical compound [NH4+].[NH4+].[NH4+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O YWYZEGXAUVWDED-UHFFFAOYSA-N 0.000 claims description 9
- KWIPUXXIFQQMKN-UHFFFAOYSA-N 2-azaniumyl-3-(4-cyanophenyl)propanoate Chemical compound OC(=O)C(N)CC1=CC=C(C#N)C=C1 KWIPUXXIFQQMKN-UHFFFAOYSA-N 0.000 claims description 8
- 229940090948 ammonium benzoate Drugs 0.000 claims description 8
- KYQODXQIAJFKPH-UHFFFAOYSA-N diazanium;2-[2-[bis(carboxymethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [NH4+].[NH4+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O KYQODXQIAJFKPH-UHFFFAOYSA-N 0.000 claims description 8
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims description 8
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 7
- 229910001080 W alloy Inorganic materials 0.000 claims description 7
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 claims description 7
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 7
- NHJPVZLSLOHJDM-UHFFFAOYSA-N azane;butanedioic acid Chemical compound [NH4+].[NH4+].[O-]C(=O)CCC([O-])=O NHJPVZLSLOHJDM-UHFFFAOYSA-N 0.000 claims description 7
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims description 7
- PZZHMLOHNYWKIK-UHFFFAOYSA-N eddha Chemical compound C=1C=CC=C(O)C=1C(C(=O)O)NCCNC(C(O)=O)C1=CC=CC=C1O PZZHMLOHNYWKIK-UHFFFAOYSA-N 0.000 claims description 7
- URDCARMUOSMFFI-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(2-hydroxyethyl)amino]acetic acid Chemical compound OCCN(CC(O)=O)CCN(CC(O)=O)CC(O)=O URDCARMUOSMFFI-UHFFFAOYSA-N 0.000 claims description 6
- 229910020366 ClO 4 Inorganic materials 0.000 claims description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 6
- QEMXHQIAXOOASZ-UHFFFAOYSA-N tetramethylammonium Chemical compound C[N+](C)(C)C QEMXHQIAXOOASZ-UHFFFAOYSA-N 0.000 claims description 6
- FTEDXVNDVHYDQW-UHFFFAOYSA-N BAPTA Chemical compound OC(=O)CN(CC(O)=O)C1=CC=CC=C1OCCOC1=CC=CC=C1N(CC(O)=O)CC(O)=O FTEDXVNDVHYDQW-UHFFFAOYSA-N 0.000 claims description 5
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 5
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 5
- VZTDIZULWFCMLS-UHFFFAOYSA-N ammonium formate Chemical compound [NH4+].[O-]C=O VZTDIZULWFCMLS-UHFFFAOYSA-N 0.000 claims description 5
- 229910017604 nitric acid Inorganic materials 0.000 claims description 5
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 claims description 5
- 229960003330 pentetic acid Drugs 0.000 claims description 5
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 4
- 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 4
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 4
- 235000019395 ammonium persulphate Nutrition 0.000 claims description 4
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 4
- 239000006184 cosolvent Substances 0.000 claims description 4
- RKKOMEIYHHASIN-UHFFFAOYSA-N hydroperoxyboronic acid Chemical compound OOB(O)O RKKOMEIYHHASIN-UHFFFAOYSA-N 0.000 claims description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 4
- AQLJVWUFPCUVLO-UHFFFAOYSA-N urea hydrogen peroxide Chemical compound OO.NC(N)=O AQLJVWUFPCUVLO-UHFFFAOYSA-N 0.000 claims description 4
- GDDNTTHUKVNJRA-UHFFFAOYSA-N 3-bromo-3,3-difluoroprop-1-ene Chemical compound FC(F)(Br)C=C GDDNTTHUKVNJRA-UHFFFAOYSA-N 0.000 claims description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 3
- WDLRUFUQRNWCPK-UHFFFAOYSA-N Tetraxetan Chemical compound OC(=O)CN1CCN(CC(O)=O)CCN(CC(O)=O)CCN(CC(O)=O)CC1 WDLRUFUQRNWCPK-UHFFFAOYSA-N 0.000 claims description 3
- KHPLPBHMTCTCHA-UHFFFAOYSA-N ammonium chlorate Chemical compound N.OCl(=O)=O KHPLPBHMTCTCHA-UHFFFAOYSA-N 0.000 claims description 3
- ZRDJERPXCFOFCP-UHFFFAOYSA-N azane;iodic acid Chemical compound [NH4+].[O-]I(=O)=O ZRDJERPXCFOFCP-UHFFFAOYSA-N 0.000 claims description 3
- YUUVAZCKXDQEIS-UHFFFAOYSA-N azanium;chlorite Chemical compound [NH4+].[O-]Cl=O YUUVAZCKXDQEIS-UHFFFAOYSA-N 0.000 claims description 3
- URGYLQKORWLZAQ-UHFFFAOYSA-N azanium;periodate Chemical compound [NH4+].[O-]I(=O)(=O)=O URGYLQKORWLZAQ-UHFFFAOYSA-N 0.000 claims description 3
- 235000019253 formic acid Nutrition 0.000 claims description 3
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 3
- FDXKBUSUNHRUIZ-UHFFFAOYSA-M tetramethylazanium;chlorite Chemical compound [O-]Cl=O.C[N+](C)(C)C FDXKBUSUNHRUIZ-UHFFFAOYSA-M 0.000 claims description 3
- ZRVXFJFFJZFRLQ-UHFFFAOYSA-M tetramethylazanium;iodate Chemical compound [O-]I(=O)=O.C[N+](C)(C)C ZRVXFJFFJZFRLQ-UHFFFAOYSA-M 0.000 claims description 3
- ZCWKIFAQRXNZCH-UHFFFAOYSA-M tetramethylazanium;perchlorate Chemical compound C[N+](C)(C)C.[O-]Cl(=O)(=O)=O ZCWKIFAQRXNZCH-UHFFFAOYSA-M 0.000 claims description 3
- HLQAWDQQEJSALG-UHFFFAOYSA-M tetramethylazanium;periodate Chemical compound C[N+](C)(C)C.[O-]I(=O)(=O)=O HLQAWDQQEJSALG-UHFFFAOYSA-M 0.000 claims description 3
- 229910008599 TiW Inorganic materials 0.000 claims description 2
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims 2
- QBPPRVHXOZRESW-UHFFFAOYSA-N 1,4,7,10-tetraazacyclododecane Chemical compound C1CNCCNCCNCCN1 QBPPRVHXOZRESW-UHFFFAOYSA-N 0.000 claims 1
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 claims 1
- 125000000267 glycino group Chemical group [H]N([*])C([H])([H])C(=O)O[H] 0.000 claims 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims 1
- 238000009472 formulation Methods 0.000 description 23
- 239000012964 benzotriazole Substances 0.000 description 19
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 18
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 17
- 230000008569 process Effects 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 14
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 13
- 238000004140 cleaning Methods 0.000 description 13
- GIAFURWZWWWBQT-UHFFFAOYSA-N 2-(2-aminoethoxy)ethanol Chemical compound NCCOCCO GIAFURWZWWWBQT-UHFFFAOYSA-N 0.000 description 11
- 230000009977 dual effect Effects 0.000 description 11
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- 239000002738 chelating agent Substances 0.000 description 10
- 239000002585 base Substances 0.000 description 9
- 230000001590 oxidative effect Effects 0.000 description 9
- 238000001878 scanning electron micrograph Methods 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- NDKBVBUGCNGSJJ-UHFFFAOYSA-M benzyltrimethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)CC1=CC=CC=C1 NDKBVBUGCNGSJJ-UHFFFAOYSA-M 0.000 description 8
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- 150000001412 amines Chemical class 0.000 description 6
- 229940073455 tetraethylammonium hydroxide Drugs 0.000 description 6
- LRGJRHZIDJQFCL-UHFFFAOYSA-M tetraethylazanium;hydroxide Chemical compound [OH-].CC[N+](CC)(CC)CC LRGJRHZIDJQFCL-UHFFFAOYSA-M 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
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- 229910052814 silicon oxide Inorganic materials 0.000 description 5
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 4
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 4
- 239000005751 Copper oxide Substances 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
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- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 229910017052 cobalt Inorganic materials 0.000 description 4
- 239000010941 cobalt Substances 0.000 description 4
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- 230000000875 corresponding effect Effects 0.000 description 4
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 description 3
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 238000001465 metallisation Methods 0.000 description 3
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- 229920002120 photoresistant polymer Polymers 0.000 description 3
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 2
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 description 2
- GDGIVSREGUOIJZ-UHFFFAOYSA-N 5-amino-3h-1,3,4-thiadiazole-2-thione Chemical compound NC1=NN=C(S)S1 GDGIVSREGUOIJZ-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
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- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
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- 150000007522 mineralic acids Chemical class 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- 239000003002 pH adjusting agent Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
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- 230000002035 prolonged effect Effects 0.000 description 2
- 150000003335 secondary amines Chemical class 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- CCVYRRGZDBSHFU-UHFFFAOYSA-N (2-hydroxyphenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC=C1O CCVYRRGZDBSHFU-UHFFFAOYSA-N 0.000 description 1
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- NHAZGSRLKBTDBF-UHFFFAOYSA-N 1,2,4-triazol-1-amine Chemical compound NN1C=NC=N1 NHAZGSRLKBTDBF-UHFFFAOYSA-N 0.000 description 1
- CYSGHNMQYZDMIA-UHFFFAOYSA-N 1,3-Dimethyl-2-imidazolidinon Chemical compound CN1CCN(C)C1=O CYSGHNMQYZDMIA-UHFFFAOYSA-N 0.000 description 1
- NXRIDTLKJCKPOG-UHFFFAOYSA-N 1,4-dihydroimidazole-5-thione Chemical compound S=C1CN=CN1 NXRIDTLKJCKPOG-UHFFFAOYSA-N 0.000 description 1
- GGZHVNZHFYCSEV-UHFFFAOYSA-N 1-Phenyl-5-mercaptotetrazole Chemical compound SC1=NN=NN1C1=CC=CC=C1 GGZHVNZHFYCSEV-UHFFFAOYSA-N 0.000 description 1
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- PEYVWSJAZONVQK-UHFFFAOYSA-N hydroperoxy(oxo)borane Chemical compound OOB=O PEYVWSJAZONVQK-UHFFFAOYSA-N 0.000 description 1
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- VZOPRCCTKLAGPN-ZFJVMAEJSA-L potassium;sodium;(2r,3r)-2,3-dihydroxybutanedioate;tetrahydrate Chemical compound O.O.O.O.[Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O VZOPRCCTKLAGPN-ZFJVMAEJSA-L 0.000 description 1
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- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
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- LUVHDTDFZLTVFM-UHFFFAOYSA-M tetramethylazanium;chlorate Chemical compound [O-]Cl(=O)=O.C[N+](C)(C)C LUVHDTDFZLTVFM-UHFFFAOYSA-M 0.000 description 1
- 150000003573 thiols Chemical class 0.000 description 1
- RBPZBERSYIHZQT-UHFFFAOYSA-N triazanium butanedioate acetate Chemical compound C(CCC(=O)[O-])(=O)[O-].C(C)(=O)[O-].[NH4+].[NH4+].[NH4+] RBPZBERSYIHZQT-UHFFFAOYSA-N 0.000 description 1
- LDGFRUUNCRYSQK-UHFFFAOYSA-N triazin-4-ylmethanediamine Chemical compound NC(N)C1=CC=NN=N1 LDGFRUUNCRYSQK-UHFFFAOYSA-N 0.000 description 1
- MPSUGQWRVNRJEE-UHFFFAOYSA-N triazol-1-amine Chemical compound NN1C=CN=N1 MPSUGQWRVNRJEE-UHFFFAOYSA-N 0.000 description 1
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- 238000012795 verification Methods 0.000 description 1
Images
Classifications
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- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- 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
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- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
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- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
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- C11D3/2082—Polycarboxylic acids-salts thereof
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
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- C—CHEMISTRY; METALLURGY
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- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
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- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
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- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
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- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
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- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
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- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
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- C23F1/18—Acidic compositions for etching copper or alloys thereof
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
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- C23F1/28—Acidic compositions for etching iron group metals
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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- C23F1/00—Etching metallic material by chemical means
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- C23F1/14—Aqueous compositions
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- C23F1/34—Alkaline compositions for etching copper or alloys thereof
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/32—Alkaline compositions
- C23F1/38—Alkaline compositions for etching refractory metals
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
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- C23F1/14—Aqueous compositions
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- C23F1/40—Alkaline compositions for etching other metallic material
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/14—Nitrogen-containing compounds
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Abstract
Description
本出願は、2013年10月11日付けで出願された米国仮特許出願第61/889,968号明細書の利益を主張するものであり、すべての開示内容は、参照により本明細書に援用される。
(a)0.1重量%〜90重量%の少なくとも1つの酸化剤と、
(b)シュウ酸アンモニウム、乳酸アンモニウム、酒石酸アンモニウム、クエン酸アンモニウム三塩基酸、酢酸アンモニウム、カルバミン酸アンモニウム、炭酸アンモニウム、安息香酸アンモニウム、四アンモニウムEDTA、エチレンジアミン四酢酸二アンモニウム塩、コハク酸アンモニウム、ギ酸アンモニウム、1−H−ピラゾール−3−カルボン酸アンモニウムの1つ以上を含む群から選択される、0.0001重量%〜50重量%までのカルボン酸アンモニウムと、
(c)脱イオン水を含む前記除去組成物の100重量%までの残部と
を含む除去組成物と基板を接触させることを含み、除去組成物は、前記低k、Cu、Co、TEOS、及びその他の誘電材料に対して前記Ti及び/又はWの合金を含むTiN、TaN、TiNxOy、TiW、又はWを選択的に除去する。
(a)0.1重量%〜90重量%の少なくとも1つの酸化剤と、
(b)シュウ酸アンモニウム、乳酸アンモニウム、酒石酸アンモニウム、クエン酸アンモニウム三塩基酸、酢酸アンモニウム、カルバミン酸アンモニウム、炭酸アンモニウム、安息香酸アンモニウム、四アンモニウムEDTA、エチレンジアミン四酢酸二アンモニウム塩、コハク酸アンモニウム、ギ酸アンモニウム、1−H−ピラゾール−3−カルボン酸アンモニウムの1つ以上を含む群から選択される、0.0001重量%〜50重量%までのカルボン酸アンモニウムと、
(c)0.001重量%〜20重量%のアミノ酸、アミンポリカルボン酸(即ち、アミノポリカルボン酸)、及び/又はカルボン酸、ポリカルボン酸キレート剤、或いはそれらの混合物と、
(d)脱イオン水を含む前記除去組成物の100重量%までの残部と
を含む除去組成物と基板を接触させることを含み、除去組成物は、前記低k、Cu、Co、TEOS、及びその他の誘電材料に対して前記Ti及びWの合金を含むTiN、TaN、TiNxOy、TiW、及びWのエッチングマスクを選択的に除去し、且つ前記エッチングマスクが除去される速度は、35時間以上もの長さであることができる長期間にわたり一定に留まる。
本発明のいくつかの実施形態においては、組成物は、水と混和性である1つ以上の助溶剤を含むことができる。これらの助溶剤は、残留物除去を促進する。適切な助溶剤としては、これらに限定されるものではないが、スルホラン、N−メチルピロリドン、及びジメチルスルホキシドが挙げられる。
本発明の概念による有用な酸化剤は、金属ハードマスクと化学的に反応し、その除去を実行する能力を有する任意の物質から選択される。こうした酸化剤としては、これらに限定されるものではないが、過酸化水素(H2O2)、n−メチルモルホリン酸化物(NMMO又はNMO)、ベンゾイルペルオキシド、テトラブチルアンモニウム過酸化モノ硫酸、オゾン、塩化第二鉄、過マンガン酸ペルオキソホウ酸、過塩素酸、ペルオキソ硫酸、ペルオキシ二硫酸アンモニウム、過酢酸、尿素ヒドロペルオキシド、硝酸(HNO3)、亜塩素酸アンモニウム(NH4ClO2)、塩素酸アンモニウム(NH4ClO3)、ヨウ素酸アンモニウム(NH4IO3)、過ホウ酸アンモニウム(NH4BO3)、過塩素酸アンモニウム(NH4ClO4)、過ヨウ素酸アンモニウム(NH4IO3)、過硫酸アンモニウム((NH4)2S2O8)、亜塩素酸テトラメチルアンモニウム((N(CH3)4)ClO2)、塩素酸テトラメチルアンミオニウム((N(CH3)4)ClO3)、ヨウ素酸テトラメチルアンモニウム((N(CH3)4)IO3)、過ホウ酸テトラメチルアンモニウム((N(CH3)4)BO3)、過塩素酸テトラメチルアンモニウム((N(CH3)4)ClO4)、過ヨウ素酸テトラメチルアンモニウム((N(CH3)4)IO4)、過硫酸テトラメチルアンモニウム((N(CH3)4)S2O8)、((CO(NH2)2)H2O2)、過酢酸(CH3(CO)OOH)、及びそれらの混合物から基本的になる群が挙げられる。前述の中で、過酸化水素は金属を含まず、且つ取扱いの簡易さ及び安価な相対的費用を提供する最も好ましい酸化剤である。
又、組成物は、必要に応じて、作用する組成物のpHを調整するために、塩基又は酸を含むことができる。塩基は、例えば、水酸化テトラメチルアンモニウム(TMAH)、水酸化テトラエチルアンモニウム(TEAH)、水酸化ベンジルトリメチルアンモニウム(BTAH)、及びそれらの混合物などの四級アンモニウム塩から選択されることができる。又、塩基は、例えば、モノエタノールアミン(MEA)、ジグリコールアミン(DGA)、トリエタノールアミン(TEA)、水酸化テトラブチホスホニウム(TBPH)、及びそれらの混合物などの一級、二級、及び三級アミンから選択されることができる。いくつかの実施形態においては、塩基は、四級アンモニウム塩及びアミンの組合せであることができる。例えば、適切な酸としては、硫酸、硝酸、リン酸、フッ化水素酸(HF)、又は臭化水素酸などの無機酸、或いはカルボン酸、アミノ酸、ヒドロキシカルボン酸、ポリカルボン酸、又はこうした酸の混合物などの有機酸が挙げられる。作用組成物のpHは、2〜14の値で、しかし、好ましくは3〜12の範囲で維持されなければならない。前述のように、BEOL銅相互接続製造アプリケーションで使用される場合、作用する組成物の好ましいpHは、高いTiNエッチング速度を実現するために、過酸化水素が酸化剤として使用される場合に、7〜12の範囲である。
Cu又はCo腐食抑制剤、或いはそれらの混合物は、本発明の組成物における任意選択の成分である。金属表面をエッチングされる又は劣化することから保護するために、腐食抑制剤の存在が必要である、BEOLアプリケーションに使用される場合、Cu又はCo腐食抑制剤は、通常、本発明の組成物及び関連するプロセスに存在する。本発明の組成物及び関連する方法の、FEOLアプリケーションを含むその他のアプリケーションでは、一般的には、腐食抑制剤は必要ではなく、即ち、Cu又はCoは洗浄化学作用を受けず、Cu又はCoは、ウェハー基板に存在せず、或いは通常、銅又はコバルト表面のわずかなエッチング/劣化は懸念でない。
記載及び特許請求される発明の概念は、金属ハードマスクが低k誘電材料と重なり合う関係にある半導体デバイスからの前記金属ハードマスクの完全な除去が、0.0001重量%〜50重量%までの有効量のカルボン酸化合物、特にカルボン酸アンモニウムを除去組成物に加えることによって達成可能であるという発見にある。好ましい実施形態においては、カルボン酸アンモニウムの濃度は、0.001重量%〜10重量%までである。
エッチング速度評価を、それぞれ60℃及び50℃でのTiNについては1分及び2分の化学処理の後、Cu、Co、W、及びTEOSについては10分の化学処理の後、実行した。TiN、Cu、Co、及びWの厚さを、Four Dimensions Four Point Probe Meter 333Aを使用して測定し、この結果、フィルムの抵抗性は、本発明の組成物との接触の後に残ったフィルムの厚さと相関した。TEOSの厚さを、HORIBA JOBIN YVONによってAuto SE Spectroscopic Ellipsometerを用いて測定した。エッチング速度を、化学処理時間で割った厚さ変化(化学処理の前後で)として算出した。化学溶液のpHを、Beckman 260 pH/Temp/mV meterを用いて測定した。実験で使用した過酸化水素は、J.T.Bakerから供給された。残留物除去効率及びTiNハードマスクエッチングを、SEM結果(Hitachi S−5500)から評価した。
表15に示した製剤を調製し、W(タングステン)エッチング速度評価を、TiN除去に関連して45℃及び55℃の温度で前述の通り実行した。
前述のように、アミノ酸、アミンポリカルボン酸(即ち、アミノポリカルボン酸)、及び/又はカルボン酸、ポリカルボン酸キレート剤、或いはそれらの混合物の存在は、本発明の組成物を予想外に安定化させることが認められた。本明細書において「安定化させる」という用語は、ハードマスクにおける達成可能なエッチング速度、即ち、ハードマスクが除去される速度が、選択された操作温度で、例えば、22時間〜少なくとも35時間までの期間などの長期間にわたり、実質的に一定に留まることを意味するために使用される。本明細書において使用される場合、「実質的に一定である」という用語は、選択された操作温度で組成物の耐用寿命の間に、ハードマスクが除去される達成可能なエッチング速度は、15Å/分を超えて低下しないことを意味することを意図する。記載及び特許請求される発明の概念によって作用可能なキレート剤の例としては、これらに限定されるものではないが、1,2−シクロヘキサンジアミン−N,N,N’,N’−四酢酸(CDTA)、エチレンジアミン四酢酸、ニトリロ三酢酸、ジエチレントリアミン五酢酸、1,4,7,10−テトラアザシクロドデカン−1,4,7,10−四酢酸、エチレングリコール四酢酸(EGTA)、1,2−ビス(o−アミノフェノキシ)エタン−N,N,N’,N’−四酢酸、N−{2−[ビス(カルボキシメチル)アミノ]エチル}−N−(2−ヒドロキシエチル)グリシン(HEDTA)、及びエチレンジアミン−N,N’−ビス(2−ヒドロキシフェニル酢酸)(EDDHA)が挙げられる。
Claims (13)
- 半導体デバイス基板であって、その上にTiN、TaN、TiNxOy、TiW、W、或いはTi又はWの合金のエッチングマスクを有する低k誘電材料を含む半導体デバイス基板から、前記低k誘電材料に対してTiN、TaN、TiNxOy、TiW、W、並びにTi及びWの合金から基本的になるエッチングマスクを選択的に除去するための、2〜14の範囲のpHを有する除去組成物であって、
(a)0.1重量%〜90重量%の酸化剤と、
(b)0.0001重量%〜50重量%のカルボン酸アンモニウムと、
(c)脱イオン水を含む前記除去組成物の100重量%までの残部と
を含む、除去組成物。 - 水と混和性である有機助溶剤を更に含む、請求項1に記載の除去組成物。
- (a)前記酸化剤は、過酸化水素(H2O2)、n−メチルモルホリン酸化物(NMMO又はNMO)、ベンゾイルペルオキシド、テトラブチルアンモニウム過酸化モノ硫酸、オゾン、塩化第二鉄、過マンガン酸ペルオキソホウ酸、過塩素酸、ペルオキソ硫酸、ペルオキシ二硫酸アンモニウム、過酢酸、尿素ヒドロペルオキシド、硝酸(HNO3)、亜塩素酸アンモニウム(NH4ClO2)、塩素酸アンモニウム(NH4ClO3)、ヨウ素酸アンモニウム(NH4IO3)、過ホウ酸アンモニウム(NH4BO3)、過塩素酸アンモニウム(NH4ClO4)、過ヨウ素酸アンモニウム(NH4IO3)、過硫酸アンモニウム((NH4)2S2O8)、亜塩素酸テトラメチルアンモニウム((N(CH3)4)ClO2)、塩素酸テトラメチルアンミオニウム((N(CH3)4)ClO3)、ヨウ素酸テトラメチルアンモニウム((N(CH3)4)IO3)、過ホウ酸テトラメチルアンモニウム((N(CH3)4)BO3)、過塩素酸テトラメチルアンモニウム((N(CH3)4)ClO4)、過ヨウ素酸テトラメチルアンモニウム((N(CH3)4)IO4)、過硫酸テトラメチルアンモニウム((N(CH3)4)S2O8)、((CO(NH2)2)H2O2)、過酢酸(CH3(CO)OOH)、及びそれらの混合物から基本的になる群から選択され、ならびに、
(b)前記カルボン酸アンモニウムは、シュウ酸アンモニウム、乳酸アンモニウム、酒石酸アンモニウム、クエン酸アンモニウム三塩基酸、酢酸アンモニウム、カルバミン酸アンモニウム、炭酸アンモニウム、安息香酸アンモニウム、四アンモニウムEDTA、エチレンジアミン四酢酸二アンモニウム塩、コハク酸アンモニウム、ギ酸アンモニウム、1−H−ピラゾール−3−カルボン酸アンモニウム、及びそれらの混合物を含む群から選択される、請求項1又は2に記載の除去組成物。 - 前記酸化剤は過酸化水素である、請求項3に記載の除去組成物。
- 1,2−シクロヘキサンジアミン−N,N,N’,N’−四酢酸、エチレンジアミン四酢酸、ニトリロ三酢酸、ジエチレントリアミン五酢酸、1,4,7,10−テトラアザシクロドデカン−1,4,7,10−四酢酸、エチレングリコール四酢酸(EGTA)、1,2−ビス(o−アミノフェノキシ)エタン−N,N,N’,N’−四酢酸、N−{2−[ビス(カルボキシメチル)アミノ]エチル}−N−(2−ヒドロキシエチル)グリシン(HEDTA)、及びエチレンジアミン−N,N’−ビス(2−ヒドロキシフェニル酢酸)(EDDHA)から基本的になる群から選択される、0.001重量%〜20重量%のアミノ酸、アミノポリカルボン酸、カルボン酸、ポリカルボン酸、又はそれらの混合物を更に含む、請求項1に記載の除去組成物。
- 0.0001重量%〜50重量%までの金属腐食抑制剤を更に含む、請求項1に記載の除去組成物。
- 前記pHは3〜13の範囲であり、および、前記酸化剤は過酸化水素である、請求項1に記載の除去組成物。
- 前記pHは7〜12の範囲である、請求項7に記載の除去組成物。
- 半導体基板であって、その上にTiN、TaN、TiNxOy、TiW、W、或いはTi又はWの合金から基本的になるエッチングマスクを有する低k材料を含む半導体基板から、前記低k材料に対してTiN、TaN、TiNxOy、TiW、W、或いはTi又はWの合金から基本的になるエッチングマスクを選択的に除去する方法であって、ある期間、室温から80℃までの範囲の温度及び3〜13の範囲のpHで、除去組成物であって、
(a)0.1重量%〜90重量%の少なくとも1つの酸化剤と、
(b)0.0001重量%〜50重量%のカルボン酸アンモニウムと、
(c)脱イオン水を含む前記除去組成物の100重量%までの残部と
を含む除去組成物と前記基板を接触させることを含み、前記除去組成物は、前記低k材料に対して前記TiN、TaN、TiNxOy、TiW、W、或いはTi又はWの合金のエッチングマスクを選択的に除去し、および、前記組成物の達成可能なエッチング速度は、長期間にわたり実質的に一定に留まる、方法。 - (a)前記酸化剤は、過酸化水素(H2O2)、n−メチルモルホリン酸化物(NMMO又はNMO)、ベンゾイルペルオキシド、テトラブチルアンモニウム過酸化モノ硫酸、オゾン、塩化第二鉄、過マンガン酸ペルオキソホウ酸、過塩素酸、ペルオキソ硫酸、ペルオキシ二硫酸アンモニウム、過酢酸、尿素ヒドロペルオキシド、硝酸(HNO3)、亜塩素酸アンモニウム(NH4ClO2)、塩素酸アンモニウム(NH4ClO3)、ヨウ素酸アンモニウム(NH4IO3)、過ホウ酸アンモニウム(NH4BO3)、過塩素酸アンモニウム(NH4ClO4)、過ヨウ素酸アンモニウム(NH4IO3)、過硫酸アンモニウム((NH4)2S2O8)、亜塩素酸テトラメチルアンモニウム((N(CH3)4)ClO2)、塩素酸テトラメチルアンミオニウム((N(CH3)4)ClO3)、ヨウ素酸テトラメチルアンモニウム((N(CH3)4)IO3)、過ホウ酸テトラメチルアンモニウム((N(CH3)4)BO3)、過塩素酸テトラメチルアンモニウム((N(CH3)4)ClO4)、過ヨウ素酸テトラメチルアンモニウム((N(CH3)4)IO4)、過硫酸テトラメチルアンモニウム((N(CH3)4)S2O8)、((CO(NH2)2)H2O2)、過酢酸(CH3(CO)OOH)、及びそれらの混合物から基本的になる群から選択され、ならびに、
(b)前記カルボン酸アンモニウムは、シュウ酸アンモニウム、乳酸アンモニウム、酒石酸アンモニウム、クエン酸アンモニウム三塩基酸、酢酸アンモニウム、カルバミン酸アンモニウム、炭酸アンモニウム、安息香酸アンモニウム、四アンモニウムEDTA、エチレンジアミン四酢酸二アンモニウム塩、コハク酸アンモニウム、ギ酸アンモニウム、1−H−ピラゾール−3−カルボン酸アンモニウム、及びそれらの混合物を含む群から選択される、請求項9に記載の方法。 - 前記除去組成物は、0.0001重量%〜20重量%までの銅腐食抑制剤を更に含む、請求項10に記載の方法。
- 前記除去組成物は、1,2−シクロヘキサンジアミン−N,N,N’,N’−四酢酸、エチレンジアミン四酢酸、ニトリロ三酢酸、ジエチレントリアミン五酢酸、1,4,7,10−テトラアザシクロドデカン−1,4,7,10−四酢酸、エチレングリコール四酢酸(EGTA)、1,2−ビス(o−アミノフェノキシ)エタン−N,N,N’,N’−四酢酸、N−{2−[ビス(カルボキシメチル)アミノ]エチル}−N−(2−ヒドロキシエチル)グリシン(HEDTA)、及びエチレンジアミン−N,N’−ビス(2−ヒドロキシフェニル酢酸)(EDDHA)から基本的になる群から選択される、0.001重量%〜20重量%のアミノ酸、アミノポリカルボン酸、カルボン酸、ポリカルボン酸、又はそれらの混合物を更に含み、これにより、前記エッチングマスクにおける達成可能な除去速度が、少なくとも35時間までの長期間にわたり実質的に一定に留まる、請求項10に記載の方法。
- 半導体基板であって、その上にTiN、TaN、TiNxOy、TiW、W、或いはTi又はWの合金から基本的になるエッチングマスクを有する低k材料を含む半導体基板から、前記低k材料に対してTiN、TaN、TiNxOy、TiW、W、或いはTi又はWの合金から基本的になるエッチングマスクを選択的に除去する方法であって、ある期間、室温から80℃までの範囲の温度及び3〜13の範囲のpHで、除去組成物であって、
(a)0.1重量%〜90重量%の過酸化水素と、
(b)シュウ酸アンモニウム、乳酸アンモニウム、酒石酸アンモニウム、クエン酸アンモニウム三塩基酸、酢酸アンモニウム、カルバミン酸アンモニウム、炭酸アンモニウム、安息香酸アンモニウム、四アンモニウムEDTA、エチレンジアミン四酢酸二アンモニウム塩、コハク酸アンモニウム、ギ酸アンモニウム、1−H−ピラゾール−3−カルボン酸アンモニウム、及びそれらの混合物を含む群から選択される、0.0001重量%〜50重量%のカルボン酸アンモニウムと、
(c)1,2−シクロヘキサンジアミン−N,N,N’,N’−四酢酸、エチレンジアミン四酢酸、ニトリロ三酢酸、ジエチレントリアミン五酢酸、1,4,7,10−テトラアザシクロドデカン−1,4,7,10−四酢酸、エチレングリコール四酢酸(EGTA)、及び1,2−ビス(o−アミノフェノキシ)エタン−N,N,N’,N’−四酢酸から基本的になる群から選択される、0.001重量%〜20重量%のアミノ酸、アミノポリカルボン酸、カルボン酸、ポリカルボン酸、又はそれらの混合物と、
(d)脱イオン水を含む前記除去組成物の100重量%までの残部と、
を含む除去組成物と前記基板を接触させることを含み、前記除去組成物は、前記低k材料に対して前記TiN、TaN、TiNxOy、TiW、W、或いはTi又はWの合金のエッチングマスクを選択的に除去し、これにより、前記エッチングマスクは選択的に除去され、および、前記エッチングマスクにおける達成可能なエッチング速度は、長期間にわたり実質的に一定に留まる、方法。
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JP2018093225A (ja) * | 2015-05-01 | 2018-06-14 | バーサム マテリアルズ ユーエス,リミティド ライアビリティ カンパニー | 窒化チタンハードマスク及びエッチ残留物除去 |
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JPWO2018181896A1 (ja) * | 2017-03-31 | 2020-02-27 | 関東化学株式会社 | チタン層またはチタン含有層のエッチング液組成物およびエッチング方法 |
JP7220142B2 (ja) | 2017-03-31 | 2023-02-09 | 関東化学株式会社 | チタン層またはチタン含有層のエッチング液組成物およびエッチング方法 |
JP2019165225A (ja) * | 2018-03-16 | 2019-09-26 | バーサム マテリアルズ ユーエス,リミティド ライアビリティ カンパニー | タングステンワード線リセスのためのエッチング溶液 |
JP7126973B2 (ja) | 2018-03-16 | 2022-08-29 | バーサム マテリアルズ ユーエス,リミティド ライアビリティ カンパニー | タングステン含有金属およびTiN含有材料の両方に好適なエッチング溶液 |
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JP2020017732A (ja) * | 2018-07-26 | 2020-01-30 | バーサム マテリアルズ ユーエス,リミティド ライアビリティ カンパニー | TiNハードマスク除去及びエッチング残渣クリーニング用組成物 |
JP2021536669A (ja) * | 2018-08-28 | 2021-12-27 | インテグリス・インコーポレーテッド | セリア粒子向けのcmp後洗浄用組成物 |
JP7212764B2 (ja) | 2018-08-28 | 2023-01-25 | インテグリス・インコーポレーテッド | セリア粒子向けのcmp後洗浄用組成物 |
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US10155921B2 (en) | 2018-12-18 |
KR102334603B1 (ko) | 2021-12-06 |
CN105874562B (zh) | 2019-05-14 |
US20160312162A1 (en) | 2016-10-27 |
KR20160068903A (ko) | 2016-06-15 |
TWI650414B (zh) | 2019-02-11 |
TWI650415B (zh) | 2019-02-11 |
KR20170076616A (ko) | 2017-07-04 |
TW201527519A (zh) | 2015-07-16 |
TW201522574A (zh) | 2015-06-16 |
TW201527518A (zh) | 2015-07-16 |
US10005991B2 (en) | 2018-06-26 |
CN105874562A (zh) | 2016-08-17 |
US20150104952A1 (en) | 2015-04-16 |
KR102327432B1 (ko) | 2021-11-17 |
WO2015053800A2 (en) | 2015-04-16 |
CN105612599A (zh) | 2016-05-25 |
CN105612599B (zh) | 2019-05-14 |
JP6523269B2 (ja) | 2019-05-29 |
JP2016536785A (ja) | 2016-11-24 |
CN105874568A (zh) | 2016-08-17 |
US20160254182A1 (en) | 2016-09-01 |
US20160240368A1 (en) | 2016-08-18 |
KR20160068902A (ko) | 2016-06-15 |
WO2015053800A3 (en) | 2015-06-18 |
JP2016535819A (ja) | 2016-11-17 |
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