JP5572371B2 - 1次化学的機械的研磨用スラリー組成物および化学的機械的研磨方法 - Google Patents
1次化学的機械的研磨用スラリー組成物および化学的機械的研磨方法 Download PDFInfo
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- JP5572371B2 JP5572371B2 JP2009274699A JP2009274699A JP5572371B2 JP 5572371 B2 JP5572371 B2 JP 5572371B2 JP 2009274699 A JP2009274699 A JP 2009274699A JP 2009274699 A JP2009274699 A JP 2009274699A JP 5572371 B2 JP5572371 B2 JP 5572371B2
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- polishing
- copper
- acid
- film
- slurry composition
- Prior art date
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- 238000005498 polishing Methods 0.000 title claims description 331
- 239000002002 slurry Substances 0.000 title claims description 142
- 239000000203 mixture Substances 0.000 title claims description 125
- 238000000034 method Methods 0.000 title claims description 57
- 239000000126 substance Substances 0.000 title claims description 50
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 167
- 229910052802 copper Inorganic materials 0.000 claims description 167
- 239000010949 copper Substances 0.000 claims description 167
- 239000002245 particle Substances 0.000 claims description 58
- 229910052715 tantalum Inorganic materials 0.000 claims description 27
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 27
- 229920000642 polymer Polymers 0.000 claims description 24
- 230000007797 corrosion Effects 0.000 claims description 23
- 238000005260 corrosion Methods 0.000 claims description 23
- 239000007800 oxidant agent Substances 0.000 claims description 23
- 150000007524 organic acids Chemical class 0.000 claims description 22
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- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 19
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 19
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 18
- 239000004065 semiconductor Substances 0.000 claims description 17
- -1 potassium ferricyanide Chemical compound 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
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- WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical compound CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 claims description 9
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 9
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 claims description 9
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
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- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 6
- 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 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 5
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- 239000004471 Glycine Substances 0.000 claims description 4
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- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 4
- 235000011054 acetic acid Nutrition 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 4
- CPRMKOQKXYSDML-UHFFFAOYSA-M rubidium hydroxide Chemical compound [OH-].[Rb+] CPRMKOQKXYSDML-UHFFFAOYSA-M 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 claims description 4
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 3
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 claims description 3
- 235000004279 alanine Nutrition 0.000 claims description 3
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 3
- 235000001014 amino acid Nutrition 0.000 claims description 3
- 229940024606 amino acid Drugs 0.000 claims description 3
- 150000001413 amino acids Chemical class 0.000 claims description 3
- MOTZDAYCYVMXPC-UHFFFAOYSA-N dodecyl hydrogen sulfate Chemical compound CCCCCCCCCCCCOS(O)(=O)=O MOTZDAYCYVMXPC-UHFFFAOYSA-N 0.000 claims description 3
- 229940043264 dodecyl sulfate Drugs 0.000 claims description 3
- 239000001630 malic acid Substances 0.000 claims description 3
- 235000011090 malic acid Nutrition 0.000 claims description 3
- SIOXPEMLGUPBBT-UHFFFAOYSA-N picolinic acid Chemical compound OC(=O)C1=CC=CC=N1 SIOXPEMLGUPBBT-UHFFFAOYSA-N 0.000 claims description 3
- MLIWQXBKMZNZNF-KUHOPJCQSA-N (2e)-2,6-bis[(4-azidophenyl)methylidene]-4-methylcyclohexan-1-one Chemical compound O=C1\C(=C\C=2C=CC(=CC=2)N=[N+]=[N-])CC(C)CC1=CC1=CC=C(N=[N+]=[N-])C=C1 MLIWQXBKMZNZNF-KUHOPJCQSA-N 0.000 claims description 2
- YDMVPJZBYSWOOP-UHFFFAOYSA-N 1h-pyrazole-3,5-dicarboxylic acid Chemical compound OC(=O)C=1C=C(C(O)=O)NN=1 YDMVPJZBYSWOOP-UHFFFAOYSA-N 0.000 claims description 2
- MFGOFGRYDNHJTA-UHFFFAOYSA-N 2-amino-1-(2-fluorophenyl)ethanol Chemical compound NCC(O)C1=CC=CC=C1F MFGOFGRYDNHJTA-UHFFFAOYSA-N 0.000 claims description 2
- YNJSNEKCXVFDKW-UHFFFAOYSA-N 3-(5-amino-1h-indol-3-yl)-2-azaniumylpropanoate Chemical compound C1=C(N)C=C2C(CC(N)C(O)=O)=CNC2=C1 YNJSNEKCXVFDKW-UHFFFAOYSA-N 0.000 claims description 2
- XWNSFEAWWGGSKJ-UHFFFAOYSA-N 4-acetyl-4-methylheptanedinitrile Chemical compound N#CCCC(C)(C(=O)C)CCC#N XWNSFEAWWGGSKJ-UHFFFAOYSA-N 0.000 claims description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 2
- DCXYFEDJOCDNAF-UHFFFAOYSA-N Asparagine Natural products OC(=O)C(N)CC(N)=O DCXYFEDJOCDNAF-UHFFFAOYSA-N 0.000 claims description 2
- LEVWYRKDKASIDU-QWWZWVQMSA-N D-cystine Chemical compound OC(=O)[C@H](N)CSSC[C@@H](N)C(O)=O LEVWYRKDKASIDU-QWWZWVQMSA-N 0.000 claims description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 2
- DCXYFEDJOCDNAF-REOHCLBHSA-N L-asparagine Chemical compound OC(=O)[C@@H](N)CC(N)=O DCXYFEDJOCDNAF-REOHCLBHSA-N 0.000 claims description 2
- HNDVDQJCIGZPNO-YFKPBYRVSA-N L-histidine Chemical compound OC(=O)[C@@H](N)CC1=CN=CN1 HNDVDQJCIGZPNO-YFKPBYRVSA-N 0.000 claims description 2
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 claims description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- 239000004153 Potassium bromate Substances 0.000 claims description 2
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 2
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 2
- QUEDYRXQWSDKKG-UHFFFAOYSA-M [O-2].[O-2].[V+5].[OH-] Chemical compound [O-2].[O-2].[V+5].[OH-] QUEDYRXQWSDKKG-UHFFFAOYSA-M 0.000 claims description 2
- 230000002378 acidificating effect Effects 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 2
- 229960001230 asparagine Drugs 0.000 claims description 2
- 235000009582 asparagine Nutrition 0.000 claims description 2
- HUCVOHYBFXVBRW-UHFFFAOYSA-M caesium hydroxide Inorganic materials [OH-].[Cs+] HUCVOHYBFXVBRW-UHFFFAOYSA-M 0.000 claims description 2
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 2
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 2
- 235000015165 citric acid Nutrition 0.000 claims description 2
- 229960003067 cystine Drugs 0.000 claims description 2
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 claims description 2
- HNDVDQJCIGZPNO-UHFFFAOYSA-N histidine Natural products OC(=O)C(N)CC1=CN=CN1 HNDVDQJCIGZPNO-UHFFFAOYSA-N 0.000 claims description 2
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims description 2
- MVFCKEFYUDZOCX-UHFFFAOYSA-N iron(2+);dinitrate Chemical compound [Fe+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MVFCKEFYUDZOCX-UHFFFAOYSA-N 0.000 claims description 2
- 239000004310 lactic acid Substances 0.000 claims description 2
- 235000014655 lactic acid Nutrition 0.000 claims description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 2
- 239000011976 maleic acid Substances 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
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- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
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- 229940094037 potassium bromate Drugs 0.000 claims description 2
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- 239000012286 potassium permanganate Substances 0.000 claims description 2
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 2
- LOAUVZALPPNFOQ-UHFFFAOYSA-N quinaldic acid Chemical compound C1=CC=CC2=NC(C(=O)O)=CC=C21 LOAUVZALPPNFOQ-UHFFFAOYSA-N 0.000 claims description 2
- UGTWMWCZTAKZGE-UHFFFAOYSA-N quinazoline-4-carboxylic acid Chemical compound C1=CC=C2C(C(=O)O)=NC=NC2=C1 UGTWMWCZTAKZGE-UHFFFAOYSA-N 0.000 claims description 2
- LISFMEBWQUVKPJ-UHFFFAOYSA-N quinolin-2-ol Chemical compound C1=CC=C2NC(=O)C=CC2=C1 LISFMEBWQUVKPJ-UHFFFAOYSA-N 0.000 claims description 2
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 claims description 2
- WPYJKGWLDJECQD-UHFFFAOYSA-N quinoline-2-carbaldehyde Chemical compound C1=CC=CC2=NC(C=O)=CC=C21 WPYJKGWLDJECQD-UHFFFAOYSA-N 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 2
- 239000011975 tartaric acid Substances 0.000 claims description 2
- 235000002906 tartaric acid Nutrition 0.000 claims description 2
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- NECRQCBKTGZNMH-UHFFFAOYSA-N 3,5-dimethylhex-1-yn-3-ol Chemical compound CC(C)CC(C)(O)C#C NECRQCBKTGZNMH-UHFFFAOYSA-N 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
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- DNHFCULEKISSPX-UHFFFAOYSA-N ethyl 6-chloro-5-fluoro-4-oxo-1h-quinazoline-2-carboxylate Chemical compound C1=C(Cl)C(F)=C2C(=O)NC(C(=O)OCC)=NC2=C1 DNHFCULEKISSPX-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1454—Abrasive powders, suspensions and pastes for polishing
- C09K3/1463—Aqueous liquid suspensions
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09G—POLISHING COMPOSITIONS; SKI WAXES
- C09G1/00—Polishing compositions
- C09G1/02—Polishing compositions containing abrasives or grinding agents
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/32115—Planarisation
- H01L21/3212—Planarisation by chemical mechanical polishing [CMP]
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Description
前記1次CMP用スラリー組成物は、研磨対象膜の機械的研磨のための研磨粒子を含む。このような研磨粒子としては、以前からCMP用スラリー組成物に研磨粒子として使用されていた通常の物質粒子を特別な制限なく使用することができ、例えば金属酸化物粒子、有機粒子、または有機無機複合粒子などを使用することができる。
先ず、1次CMP用スラリー組成物の製造のための各構成成分としては、次のような物質を使用した。研磨粒子であるシリカとしては、扶桑化学工業株式会社のコロイダルシリカ Quartron PLのシリーズのうちのPL−1またはPL−3Lを購入して使用し、ポリビニルピロリドン高分子添加剤の溶解度を上昇させるために、各スラリー組成物に対してドデシルベンゼンスルホン酸(DBSA)500ppmを添加した。
まず、1L入りのポリプロピレン瓶に研磨粒子、有機酸、腐蝕抑制剤、および酸化剤を表1に示した組成の通り添加し、脱イオン水を添加した後、pH調節剤を使用してpHを調節し、スラリー組成物全体の重量を合わせた。このような組成物を10分間高速攪拌して、最終的に実施例1乃至16の1次CMP用スラリー組成物を製造した。
*前記表1の組成で、表1に示した各成分の含有量、及び表1に示していないドデシルベンゼンスルホン酸(DBSA)およびpH調節剤の含有量を除いた残量は、水の含有量になる。
*前記表1で、DPEA:4,4’−ジピリジルエタン、APS:過硫酸アンモニウム、PVP:ポリビニルピロリドンをそれぞれ示す。また、Random:aldrich社のプロピレンオキシドエチレンオキシドランダム共重合体、F88:BASF社のプロピレンオキシドエチレンオキシド共重合体、Surfynol 485:エチレンオキシド85重量%を含有するAir product社の界面活性剤をそれぞれ示す。
1次CMP用スラリーの組成を以下の表2のように異ならせたことを除いては、前記実施例1乃至16と同様な方法で、比較例1乃至3の1次CMP用スラリー組成物を製造した。
*前記表2の組成で、表2に示した各成分の含有量、及び表2に示していないドデシルベンゼンスルホン酸(DBSA)およびpH調節剤の含有量を除いた残量は、水の含有量になる。
*前記表2で、DPEA:4,4’−ジピリジルエタン、APS:過硫酸アンモニウム、PEG:ポリエチレングリコールをそれぞれ示す。
前記実施例1乃至16および比較例1乃至3のスラリー組成物を使用して、次の通り研磨工程を試験進行した後、その研磨特性を次の方法で評価した。
次のような研磨対象膜が形成されたウェハーに対して実施例1乃至16および比較例1乃至3のスラリー組成物をそれぞれ使用して、CMP方法で研磨を進めた。
○PVD(物理的気相蒸着法;Physical Vapor Deposition)により銅膜15,000Åが蒸着された8インチウェハー
○PVDによりタンタル膜3,000Åが蒸着された8インチウェハー
○PETEOSによりシリコン酸化膜7,000Åが蒸着された8インチウェハー
この時、研磨を進めた具体的な条件は、次の通りである。
研磨装備:UNIPLA210(斗山メカテク社)
研磨パッド:IC1000/SubaIV Stacked(Rodel社)
定盤速度:24rpm
ヘッド速度:100rpm
ウェハー圧力:1.5psi
リテーナーリング圧力:2.5psi
スラリー流速:200ml/min
研磨装備:GnP Poli−500(ジーエヌピーテクノロジー社)
研磨パッド:IC1000/SubaIV Stacked(Rodel社)
定盤速度:93rpm
ヘッド速度:87rpm
ウェハー圧力:1.5psi
リテーナーリング圧力:3.5psi
スラリー流速:200ml/min
銅膜またはタンタル膜の金属膜の厚さは、LEI1510 Rs Mapping(LEI社)を使用して各薄膜の面抵抗を測定した後、次の式で算出した。
[銅膜の厚さ(Å)]=[銅膜比抵抗値(Ω/cm)÷シート抵抗値(Ω/square(□))]×108
[タンタル膜の厚さ(Å)]=[タンタル膜比抵抗値(Ω/cm)÷シート抵抗値(Ω/square(□))]×108
シリコン酸化膜の厚さは、Nanospec6100装備を使用して測定した。
Claims (22)
- 研磨粒子;酸化剤;有機酸;ピリジン系化合物、ピラゾール系化合物、およびキノリン系化合物からなるグループより選択される少なくとも1種以上の腐蝕抑制剤;および重量平均分子量3,000乃至100,000であるポリビニルピロリドンと、プロピレンオキシドエチレンオキシド共重合体を含む高分子添加剤;を含み、
銅膜に対する研磨率:タンタル膜に対する研磨率が30:1以上の研磨選択比を有する、1次化学的機械的研磨用スラリー組成物。 - 銅膜に対して3,000Å/min以上の研磨率を示す、請求項1に記載のスラリー組成物。
- 銅膜を研磨した後、前記銅膜のウェハー内の研磨均一度が5%以下である、請求項1に記載のスラリー組成物。
- 前記研磨粒子は、シリカ粒子、アルミナ粒子、セリア粒子、ジルコニア粒子、チタニア粒子、スチレン系重合体粒子、アクリル系重合体粒子、ポリ塩化ビニル粒子、およびポリアミド粒子からなるグループより選択された少なくとも1種以上を含む、請求項1に記載のスラリー組成物。
- 前記研磨粒子は、10乃至500nmの平均粒径を有する、請求項1に記載のスラリー組成物。
- 前記酸化剤は、過酸化水素、過酢酸、過安息香酸、tert−ブチルヒドロペルオキシド、過硫酸アンモニウム(APS)、過硫酸カリウム(KPS)、次亜塩素酸、過マンガン酸カリウム、硝酸鉄、フェリシアン化カリウム、過ヨウ素酸カリウム、次亜塩素酸ナトリウム、三酸化バナジウム、および臭素酸カリウムからなるグループより選択された少なくとも一つ以上を含む、請求項1に記載のスラリー組成物。
- 前記有機酸は、アラニン、グリシン、シスチン、ヒスチジン、およびこれらの塩からなるグループより選択された少なくとも一つ以上のアミノ酸を含む、請求項1に記載のスラリー組成物。
- 前記有機酸は、アスパラギン、グアニジン、ヒドラジン、エチレンジアミン、およびこれらの塩からなるグループより選択された少なくとも一つ以上のアミン系化合物を含む、請求項1に記載のスラリー組成物。
- 前記有機酸は、マレイン酸、リンゴ酸、酒石酸、クエン酸、マロン酸、ギ酸、酢酸、乳酸、ピリジンカルボン酸、ピリジルジカルボン酸およびこれらの塩からなるグループより選択された少なくとも一つ以上のカルボン酸化合物を含む、請求項1に記載のスラリー組成物。
- 前記腐蝕抑制剤は、4,4’−ジピリジルエタン、4,4’−ジピリジルエテン、4,4’−ジピリジルプロパン、4,4’−ジピリジルプロペン、3,5−ピラゾールジカルボン酸、キナルジン酸、2−キナゾリンカルボン酸、4−キナゾリンカルボン酸、2−キノリンカルボキシアルデヒド、8−キノリノール、2−キノリノール、およびこれらの塩からなるグループより選択された少なくとも一つ以上を含む、請求項1に記載のスラリー組成物。
- ドデシルベンゼンスルホン酸またはドデシルスルフェートを更に含む、請求項1に記載のスラリー組成物。
- pH調節剤を更に含む、請求項1に記載のスラリー組成物。
- 前記pH調節剤は、水酸化カリウム、水酸化ナトリウム、アンモニア水、水酸化ルビジウム、水酸化セシウム、炭酸水素ナトリウム、および炭酸ナトリウムからなるグループより選択された少なくとも一つ以上の塩基性pH調節剤;または塩酸、硝酸、硫酸、燐酸、ギ酸および酢酸からなるグループより選択された少なくとも一つ以上の酸性pH調節剤;を含む、請求項12に記載のスラリー組成物。
- 0.1乃至30重量%の研磨粒子、0.1乃至10重量%の酸化剤、0.05乃至2重量%の有機酸、0.001乃至2重量%の腐蝕抑制剤、0.0001乃至1重量%の高分子添加剤、残量のpH調節剤および水を含む、請求項12に記載のスラリー組成物。
- 銅含有膜の1次化学的機械的研磨のために使用される、請求項1に記載のスラリー組成物。
- 前記銅含有膜は、半導体素子の銅配線層を含む、請求項15に記載のスラリー組成物。
- 基板上の銅含有膜と研磨パッドとの間に請求項1のスラリー組成物を供給して、前記銅含有膜および研磨パッドを接触させた状態で相対的に移動させて、前記銅含有膜を1次研磨する段階を含む、化学的機械的研磨方法。
- 前記1次研磨された銅含有膜と研磨パッドとの間に2次化学的機械的研磨用スラリー組成物を供給して、前記銅含有膜および研磨パッドを接触させた状態で相対的に移動させて、前記銅含有膜を2次研磨する段階を更に含む、請求項17に記載の化学的機械的研磨方法。
- 前記銅含有膜は、前記基板上の研磨停止層および銅配線層を含み、前記1次研磨段階は、前記研磨停止層の上面が露出されるまで進められる、請求項17に記載の化学的機械的研磨方法。
- 前記研磨停止層は、タンタル含有膜を含む、請求項19に記載の化学的機械的研磨方法。
- 前記銅含有膜および研磨パッドを接触させた状態で停止した研磨パッド上で基板を回転させて、前記基板上の銅含有膜を研磨する、請求項17または請求項18に記載の化学的機械的研磨方法。
- 前記銅含有膜および研磨パッドを接触させた状態で前記研磨パッドおよび基板を回転させて、前記基板上の銅含有膜を研磨する、請求項17または請求項18に記載の化学的機械的研磨方法。
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JP2008288509A (ja) * | 2007-05-21 | 2008-11-27 | Fujifilm Corp | 金属用研磨液 |
JP2008288537A (ja) * | 2007-05-21 | 2008-11-27 | Fujifilm Corp | 金属用研磨液及び化学的機械的研磨方法 |
JP2009081200A (ja) * | 2007-09-25 | 2009-04-16 | Fujifilm Corp | 研磨液 |
JP5413566B2 (ja) * | 2008-02-06 | 2014-02-12 | Jsr株式会社 | 化学機械研磨用水系分散体およびその製造方法、ならびに化学機械研磨方法 |
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2009
- 2009-11-25 KR KR1020090114477A patent/KR101084676B1/ko active IP Right Grant
- 2009-12-02 TW TW098141166A patent/TWI412582B/zh active
- 2009-12-02 JP JP2009274699A patent/JP5572371B2/ja active Active
- 2009-12-03 US US12/630,556 patent/US20100151684A1/en not_active Abandoned
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KR20100063656A (ko) | 2010-06-11 |
US20100151684A1 (en) | 2010-06-17 |
TWI412582B (zh) | 2013-10-21 |
JP2010135792A (ja) | 2010-06-17 |
TW201030134A (en) | 2010-08-16 |
KR101084676B1 (ko) | 2011-11-22 |
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