JP2013115154A - 研磨用組成物 - Google Patents
研磨用組成物 Download PDFInfo
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- JP2013115154A JP2013115154A JP2011258345A JP2011258345A JP2013115154A JP 2013115154 A JP2013115154 A JP 2013115154A JP 2011258345 A JP2011258345 A JP 2011258345A JP 2011258345 A JP2011258345 A JP 2011258345A JP 2013115154 A JP2013115154 A JP 2013115154A
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- Prior art keywords
- acid
- polishing
- indole
- polishing composition
- iii
- Prior art date
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- Granted
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- 238000005498 polishing Methods 0.000 title claims abstract description 93
- 239000000203 mixture Substances 0.000 title claims abstract description 49
- 150000001875 compounds Chemical class 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 30
- 239000007800 oxidant agent Substances 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 14
- -1 nitrogen-containing organic compound Chemical class 0.000 claims abstract description 13
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 6
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 abstract description 12
- 238000005530 etching Methods 0.000 abstract description 12
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 abstract description 10
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 abstract description 6
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 abstract description 6
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 abstract description 6
- 235000015165 citric acid Nutrition 0.000 abstract description 4
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 abstract description 3
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 abstract description 3
- NSPMIYGKQJPBQR-UHFFFAOYSA-N 4H-1,2,4-triazole Chemical compound C=1N=CNN=1 NSPMIYGKQJPBQR-UHFFFAOYSA-N 0.000 abstract description 3
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 abstract description 3
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 abstract description 3
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 abstract description 3
- 239000001361 adipic acid Substances 0.000 abstract description 3
- 235000011037 adipic acid Nutrition 0.000 abstract description 3
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 abstract description 3
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 abstract description 3
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 abstract description 3
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 abstract description 3
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 abstract description 3
- 239000011976 maleic acid Substances 0.000 abstract description 3
- 239000001630 malic acid Substances 0.000 abstract description 3
- 235000011090 malic acid Nutrition 0.000 abstract description 3
- 239000011975 tartaric acid Substances 0.000 abstract description 3
- 235000002906 tartaric acid Nutrition 0.000 abstract description 3
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 abstract description 3
- 239000012964 benzotriazole Substances 0.000 abstract description 2
- 150000003628 tricarboxylic acids Chemical class 0.000 abstract description 2
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 9
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 239000002210 silicon-based material Substances 0.000 description 6
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 5
- SIKJAQJRHWYJAI-UHFFFAOYSA-N Indole Chemical compound C1=CC=C2NC=CC2=C1 SIKJAQJRHWYJAI-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- PZOUSPYUWWUPPK-UHFFFAOYSA-N indole Natural products CC1=CC=CC2=C1C=CN2 PZOUSPYUWWUPPK-UHFFFAOYSA-N 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 4
- BAXOFTOLAUCFNW-UHFFFAOYSA-N 1H-indazole Chemical compound C1=CC=C2C=NNC2=C1 BAXOFTOLAUCFNW-UHFFFAOYSA-N 0.000 description 3
- KDCGOANMDULRCW-UHFFFAOYSA-N 7H-purine Chemical compound N1=CNC2=NC=NC2=C1 KDCGOANMDULRCW-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
- WTKZEGDFNFYCGP-UHFFFAOYSA-N Pyrazole Chemical compound C=1C=NNC=1 WTKZEGDFNFYCGP-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- XSCHRSMBECNVNS-UHFFFAOYSA-N benzopyrazine Natural products N1=CC=NC2=CC=CC=C21 XSCHRSMBECNVNS-UHFFFAOYSA-N 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- WQEPLUUGTLDZJY-UHFFFAOYSA-N pentadecanoic acid Chemical compound CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- KJUGUADJHNHALS-UHFFFAOYSA-N 1H-tetrazole Chemical compound C=1N=NNN=1 KJUGUADJHNHALS-UHFFFAOYSA-N 0.000 description 2
- SMNDYUVBFMFKNZ-UHFFFAOYSA-N 2-furoic acid Chemical compound OC(=O)C1=CC=CO1 SMNDYUVBFMFKNZ-UHFFFAOYSA-N 0.000 description 2
- BHNHHSOHWZKFOX-UHFFFAOYSA-N 2-methyl-1H-indole Chemical compound C1=CC=C2NC(C)=CC2=C1 BHNHHSOHWZKFOX-UHFFFAOYSA-N 0.000 description 2
- IHCCAYCGZOLTEU-UHFFFAOYSA-N 3-furoic acid Chemical compound OC(=O)C=1C=COC=1 IHCCAYCGZOLTEU-UHFFFAOYSA-N 0.000 description 2
- XLSZMDLNRCVEIJ-UHFFFAOYSA-N 4-methylimidazole Chemical compound CC1=CNC=N1 XLSZMDLNRCVEIJ-UHFFFAOYSA-N 0.000 description 2
- LJUQGASMPRMWIW-UHFFFAOYSA-N 5,6-dimethylbenzimidazole Chemical compound C1=C(C)C(C)=CC2=C1NC=N2 LJUQGASMPRMWIW-UHFFFAOYSA-N 0.000 description 2
- PWSZRRFDVPMZGM-UHFFFAOYSA-N 5-phenyl-1h-pyrazol-3-amine Chemical compound N1N=C(N)C=C1C1=CC=CC=C1 PWSZRRFDVPMZGM-UHFFFAOYSA-N 0.000 description 2
- ONYNOPPOVKYGRS-UHFFFAOYSA-N 6-methylindole Natural products CC1=CC=C2C=CNC2=C1 ONYNOPPOVKYGRS-UHFFFAOYSA-N 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 2
- IVYPNXXAYMYVSP-UHFFFAOYSA-N Indole-3-carbinol Natural products C1=CC=C2C(CO)=CNC2=C1 IVYPNXXAYMYVSP-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- KYQCOXFCLRTKLS-UHFFFAOYSA-N Pyrazine Chemical compound C1=CN=CC=N1 KYQCOXFCLRTKLS-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 2
- 235000011054 acetic acid Nutrition 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- SXDBWCPKPHAZSM-UHFFFAOYSA-N bromic acid Chemical compound OBr(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- CEJLBZWIKQJOAT-UHFFFAOYSA-N dichloroisocyanuric acid Chemical compound ClN1C(=O)NC(=O)N(Cl)C1=O CEJLBZWIKQJOAT-UHFFFAOYSA-N 0.000 description 2
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- UKMSUNONTOPOIO-UHFFFAOYSA-N docosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCC(O)=O UKMSUNONTOPOIO-UHFFFAOYSA-N 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- CHTHALBTIRVDBM-UHFFFAOYSA-N furan-2,5-dicarboxylic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)O1 CHTHALBTIRVDBM-UHFFFAOYSA-N 0.000 description 2
- KEMQGTRYUADPNZ-UHFFFAOYSA-N heptadecanoic acid Chemical compound CCCCCCCCCCCCCCCCC(O)=O KEMQGTRYUADPNZ-UHFFFAOYSA-N 0.000 description 2
- MNWFXJYAOYHMED-UHFFFAOYSA-N heptanoic acid Chemical compound CCCCCCC(O)=O MNWFXJYAOYHMED-UHFFFAOYSA-N 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 2
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- 239000010954 inorganic particle Substances 0.000 description 2
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- 230000001681 protective effect Effects 0.000 description 2
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- 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
- C09G1/04—Aqueous dispersions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
- B24B37/042—Lapping machines or devices; Accessories designed for working plane surfaces operating processes therefor
- B24B37/044—Lapping machines or devices; Accessories designed for working plane surfaces operating processes therefor characterised by the composition of the lapping agent
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- 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
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/30604—Chemical etching
- H01L21/30612—Etching of AIIIBV compounds
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
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- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
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Abstract
【解決手段】本発明の研磨用組成物は、酸化剤と防食剤を含有する。防食剤は、1H−1,2,4−トリアゾールやベンゾトリアゾールなどの窒素含有有機化合物、又はカルボキシル基を有する有機化合物、例えば、マロン酸、コハク酸、グルタル酸、アジピン酸、ピメリン酸、マレイン酸、フタル酸、リンゴ酸及び酒石酸のようなジカルボン酸、並びにクエン酸のようなトリカルボン酸であることが好ましい。
【選択図】なし
Description
本発明の第2の態様では、上記第1の態様の研磨用組成物を用いて、III−V族化合物材料部分を有する研磨対象物を研磨する方法を提供する。
本実施形態の研磨用組成物は、酸化剤と防食剤を水に混合して調製される。従って、研磨用組成物は、酸化剤及び防食剤を含有する。
研磨用組成物中に含まれる酸化剤の種類は特に限定されないが、0.3V以上の標準電極電位を有していることが好ましい。0.3V以上の標準電極電位を有する酸化剤を使用した場合には、0.3V未満の標準電極電位を有する酸化剤を使用した場合に比べて、研磨用組成物によるIII−V族化合物材料部分及びケイ素材料部分の研磨速度が向上するという有利がある。0.3V以上の標準電極電位を有する酸化剤の具体例としては、過酸化水素、過酸化ナトリウム、過酸化バリウム、有機酸化剤、オゾン水、銀( I I ) 塩、鉄( I I I ) 塩、並びに過マンガン酸、クロム酸、重クロム酸、ペルオキソ二硫酸、ペルオキソリン酸、ペルオキソ硫酸、ペルオキソホウ酸、過ギ酸、過酢酸、過安息香酸、過フタル酸、次亜塩素酸、次亜臭素酸、次亜ヨウ素酸、塩素酸、亜塩素酸、過塩素酸、臭素酸、ヨウ素酸、過ヨウ素酸、硫酸、過硫酸、クエン酸、ジクロロイソシアヌル酸及びそれらの塩等が挙げられる。これらの中でも、研磨用組成物によるIII−V族化合物材料部分及びケイ素材料部分の研磨速度が大きく向上することから、過酸化水素、過硫酸アンモニウム、及びジクロロイソシアヌル酸ナトリウムが好ましい。
E0=−△G0/nF=(RT/nF)lnK
ここで、E0は標準電極電位、△G0は酸化反応の標準ギブスエネルギー変化、Kはその平行定数、Fはファラデー定数、Tは絶対温度、nは酸化反応に関与する電子数である。従って、標準電極電位は温度により変動するので、本明細書中においては25℃における標準電極電位を採用している。なお、水溶液系の標準電極電位は、例えば改訂4版化学便覧(基礎編)II、pp464−468(日本化学会編)等に記載されている。
研磨用組成物中に含まれる防食剤の種類は特に限定されないが、窒素含有有機化合物、又はカルボキシル基を有する有機化合物すなわちカルボン酸であることが好ましい。窒素含有有機化合物の例としては、アミン化合物や含窒素複素環化合物等が挙げられるが、含窒素複素環化合物が好ましい。含窒素複素環化合物の具体例としては、ピロール、ピラゾール、イミダゾール、トリアゾール、テトラゾール、ピリジン、ピラジン、ピリダジン、ピリンジン、インドリジン、インドール、イソインドール、インダゾール、プリン、キノリジン、キノリン、イソキノリン、ナフチリジン、フタラジン、キノキサリン、キナゾリン、シンノリン、ブテリジン、チアゾール、イソチアゾール、オキサゾール、イソオキサゾール、フラザンなどが挙げられる。ピラゾールの例には、1H−ピラゾール、4−ニトロ−3−ピラゾールカルボン酸、3,5−ピラゾールカルボン酸、3−アミノ−5−フェニルピラゾール、5−アミノ−3−フェニルピラゾール、3,4,5−トリブロモピラゾール、3−アミノピラゾール、3,5−ジメチルピラゾール、3,5−ジメチル−1−ヒドロキシメチルピラゾール、3−メチルピラゾール、1−メチルピラゾール、3−アミノ−5−メチルピラゾール、4−アミノ-ピラゾロ[3,4−d]ピリミジン、アロプリノール、4−クロロ−1H−ピラゾロ[3,4−D]ピリミジン、3,4−ジヒドロキシ−6−メチルピラゾロ(3,4−B)−ピリジン、6−メチル−1H−ピラゾロ[3,4−b]ピリジン−3−アミンなどが含まれる。イミダゾールの例には、イミダゾール、1−メチルイミダゾール、2−メチルイミダゾール、4−メチルイミダゾール、1,2−ジメチルピラゾール、2−エチル−4−メチルイミダゾール、2−イソプロピルイミダゾール、ベンゾイミダゾール、5,6−ジメチルベンゾイミダゾール、2−アミノベンゾイミダゾール、2−クロロベンゾイミダゾール、2−メチルベンゾイミダゾール、2−(1−ヒドロキシエチル)ベンズイミダゾール、2−ヒドロキシベンズイミダゾール、2−フェニルベンズイミダゾール、2,5−ジメチルベンズイミダゾール、5−メチルベンゾイミダゾール、5−ニトロベンズイミダゾール、1H−プリンなどが含まれる。トリアゾールの例には、1,2,3−トリアゾール、1,2,4−トリアゾール、1−メチル−1,2,4−トリアゾール、メチル−1H−1,2,4−トリアゾール−3−カルボキシレート、1,2,4−トリアゾール−3−カルボン酸、1,2,4−トリアゾール−3−カルボン酸メチル、1H−1,2,4−トリアゾール−3−チオール、3,5−ジアミノ−1H−1,2,4−トリアゾール、3−アミノ−1,2,4−トリアゾール−5−チオール、3−アミノ−1H−1,2,4−トリアゾール、3−アミノ−5−ベンジル−4H−1,2,4−トリアゾール、3−アミノ−5−メチル−4H−1,2,4−トリアゾール、3−ニトロ−1,2,4−トリアゾール、3−ブロモ−5−ニトロ−1,2,4−トリアゾール、4−(1,2,4−トリアゾール−1−イル)フェノール、4−アミノ−1,2,4−トリアゾール、4−アミノ−3,5−ジプロピル−4H−1,2,4−トリアゾール、4−アミノ−3,5−ジメチル−4H−1,2,4−トリアゾール、4−アミノ−3,5−ジペプチル−4H−1,2,4−トリアゾール、5−メチル−1,2,4−トリアゾール−3,4−ジアミン、1H−ベンゾトリアゾール、1−ヒドロキシベンゾトリアゾール、1−アミノベンゾトリアゾール、1−カルボキシベンゾトリアゾール、5−クロロ−1H−ベンゾトリアゾール、5−ニトロ−1H−ベンゾトリアゾール、5−カルボキシ−1H−ベンゾトリアゾール、5−メチル−1H−ベンゾトリアゾール、5,6−ジメチル−1H−ベンゾトリアゾール、1−(1’,2’−ジカルボキシエチル)ベンゾトリアゾール、1−[N,N−ビス(ヒドロキシエチル)アミノメチル]ベンゾトリアゾール、1−[N,N−ビス(ヒドロキシエチル)アミノメチル]−5−メチルベンゾトリアゾールなどが含まれる。テトラゾールの例には、1H−テトラゾール、5−メチルテトラゾール、5−アミノテトラゾール、5−フェニルテトラゾールなどが含まれる。インダゾールの例には、1H−インダゾール、5−アミノ−1H−インダゾール、5−ニトロ−1H−インダゾール、5−ヒドロキシ−1H−インダゾール、6−アミノ−1H−インダゾール、6−ニトロ−1H−インダゾール、6−ヒドロキシ−1H−インダゾール、3−カルボキシ−5−メチル−1H−インダゾールなどが含まれる。インドールの例には、1H−インドール、1−メチル−1H−インドール、2−メチル−1H−インドール、3−メチル−1H−インドール、4−メチル−1H−インドール、5−メチル−1H−インドール、6−メチル−1H−インドール、7−メチル−1H−インドール、4−アミノ−1H−インドール、5−アミノ−1H−インドール、6−アミノ−1H−インドール、7−アミノ−1H−インドール、4−ヒドロキシ−1H−インドール、5−ヒドロキシ−1H−インドール、6−ヒドロキシ−1H−インドール、7−ヒドロキシ−1H−インドール、4−メトキシ−1H−インドール 、5−メトキシ−1H−インドール、6−メトキシ−1H−インドール、7−メトキシ−1H−インドール、4−クロロ−1H−インドール、5−クロロ−1H−インドール、6−クロロ−1H−インドール、7−クロロ−1H−インドール、4−カルボキシ−1H−インドール、5−カルボキシ−1H−インドール、6−カルボキシ−1H−インドール、7−カルボキシ−1H−インドール、4−ニトロ−1H−インドール 、5−ニトロ−1H−インドール、6−ニトロ−1H−インドール、7−ニトロ−1H−インドール、4−ニトリル−1H−インドール、5−ニトリル−1H−インドール、6−ニトリル−1H−インドール、7−ニトリル−1H−インドール、2,5−ジメチル−1H−インドール、1,2−ジメチル−1H−インドール、1,3−ジメチル−1H−インドール、2,3−ジメチル−1H−インドール、5−アミノ−2,3−ジメチル−1H−インドール、7−エチル−1H−インドール、5−(アミノメチル)インドール、2−メチル−5−アミノ−1H−インドール、3−ヒドロキシメチル−1H−インドール、6−イソプロピル−1H−インドール、5−クロロ−2−メチル−1H−インドールなどが含まれる。中でも好ましいのは、1H−1,2,4−トリアゾール、及びベンゾトリアゾールである。
本実施形態の研磨用組成物では、エッチングを原因とした段差が研磨対象物の表面に発生するのを抑えるために、研磨対象物のIII−V族化合物材料部分と相互作用する防食剤が使用されている。そのため、この研磨用組成物は、III−V族化合物材料部分を有する研磨対象物を研磨する用途で好適に用いられる。
・ 前記実施形態の研磨用組成物は、二種類以上の酸化剤を含有してもよい。
・ 前記実施形態の研磨用組成物は、二種類以上の防食剤を含有してもよい。例えば、窒素含有化合物からなる防食剤と、カルボキシル基を有する有機化合物からなる防食剤とを組み合わせて用いてもよい。
・ 前記実施形態の研磨用組成物は一液型であってもよいし、二液型をはじめとする多液型であってもよい。
次に、本発明の実施例及び比較例を説明する。
Claims (5)
- III−V族化合物材料を含有する部分を有する研磨対象物を研磨する用途で使用される研磨用組成物であって、酸化剤と防食剤を含有することを特徴とする研磨用組成物。
- 前記防食剤が窒素含有有機化合物である、請求項1に記載の研磨用組成物。
- 前記防食剤がカルボキシル基を有する有機化合物である、請求項1に記載の研磨用組成物。
- 請求項1〜3のいずれか一項に記載の研磨用組成物を用いて、III−V族化合物材料を含有する部分を有する研磨対象物を研磨することを特徴とする研磨方法。
- 請求項1〜3のいずれか一項に記載の研磨用組成物を用いて、III−V族化合物材料を含有する部分を有する研磨対象物を研磨することにより、基板を製造することを特徴とする基板の製造方法。
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