WO2019187969A1 - Composition de polissage - Google Patents
Composition de polissage Download PDFInfo
- Publication number
- WO2019187969A1 WO2019187969A1 PCT/JP2019/008022 JP2019008022W WO2019187969A1 WO 2019187969 A1 WO2019187969 A1 WO 2019187969A1 JP 2019008022 W JP2019008022 W JP 2019008022W WO 2019187969 A1 WO2019187969 A1 WO 2019187969A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polishing
- polishing composition
- polyvinyl alcohol
- dispersant
- weight
- Prior art date
Links
- 238000005498 polishing Methods 0.000 title claims abstract description 285
- 239000000203 mixture Substances 0.000 title claims abstract description 150
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 146
- 239000002270 dispersing agent Substances 0.000 claims abstract description 104
- 229920000642 polymer Polymers 0.000 claims abstract description 99
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 84
- 239000006061 abrasive grain Substances 0.000 claims abstract description 44
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- -1 polyoxyethylene Polymers 0.000 claims description 61
- 229910052710 silicon Inorganic materials 0.000 claims description 39
- 239000010703 silicon Substances 0.000 claims description 39
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 35
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 28
- 229920002554 vinyl polymer Polymers 0.000 claims description 14
- 150000005215 alkyl ethers Chemical class 0.000 claims description 13
- 230000007547 defect Effects 0.000 abstract description 27
- 238000004220 aggregation Methods 0.000 abstract description 17
- 230000002776 aggregation Effects 0.000 abstract description 17
- 239000007788 liquid Substances 0.000 description 46
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 38
- 235000012431 wafers Nutrition 0.000 description 35
- 239000002245 particle Substances 0.000 description 30
- 239000012085 test solution Substances 0.000 description 21
- 150000007514 bases Chemical class 0.000 description 19
- 239000006185 dispersion Substances 0.000 description 19
- 125000005702 oxyalkylene group Chemical group 0.000 description 18
- 229920003169 water-soluble polymer Polymers 0.000 description 18
- 238000000034 method Methods 0.000 description 16
- 150000001875 compounds Chemical class 0.000 description 15
- 239000000178 monomer Substances 0.000 description 15
- 238000007517 polishing process Methods 0.000 description 15
- 229910052757 nitrogen Inorganic materials 0.000 description 14
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 12
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 description 11
- 238000004140 cleaning Methods 0.000 description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 10
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 10
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 239000008119 colloidal silica Substances 0.000 description 9
- 239000007864 aqueous solution Substances 0.000 description 8
- 125000004432 carbon atom Chemical group C* 0.000 description 8
- 229920001577 copolymer Polymers 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 7
- 239000007800 oxidant agent Substances 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- 238000007127 saponification reaction Methods 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- 239000004721 Polyphenylene oxide Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- 229920000578 graft copolymer Polymers 0.000 description 6
- 125000004433 nitrogen atom Chemical group N* 0.000 description 6
- 229920000570 polyether Polymers 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 239000004094 surface-active agent Substances 0.000 description 6
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical group CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 5
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 5
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 5
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 4
- 229920001214 Polysorbate 60 Polymers 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 description 4
- 229920001400 block copolymer Polymers 0.000 description 4
- 239000007853 buffer solution Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000007865 diluting Methods 0.000 description 4
- 238000005227 gel permeation chromatography Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 235000017060 Arachis glabrata Nutrition 0.000 description 3
- 241001553178 Arachis glabrata Species 0.000 description 3
- 235000010777 Arachis hypogaea Nutrition 0.000 description 3
- 235000018262 Arachis monticola Nutrition 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 3
- 229920000881 Modified starch Polymers 0.000 description 3
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 239000000908 ammonium hydroxide Substances 0.000 description 3
- 125000000129 anionic group Chemical group 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 239000010954 inorganic particle Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 235000020232 peanut Nutrition 0.000 description 3
- 229920001451 polypropylene glycol Polymers 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 125000001453 quaternary ammonium group Chemical group 0.000 description 3
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 3
- 229920005604 random copolymer Polymers 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229920001567 vinyl ester resin Chemical group 0.000 description 3
- OCKGFTQIICXDQW-ZEQRLZLVSA-N 5-[(1r)-1-hydroxy-2-[4-[(2r)-2-hydroxy-2-(4-methyl-1-oxo-3h-2-benzofuran-5-yl)ethyl]piperazin-1-yl]ethyl]-4-methyl-3h-2-benzofuran-1-one Chemical compound C1=C2C(=O)OCC2=C(C)C([C@@H](O)CN2CCN(CC2)C[C@H](O)C2=CC=C3C(=O)OCC3=C2C)=C1 OCKGFTQIICXDQW-ZEQRLZLVSA-N 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical class OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical group OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 2
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical group C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 125000005037 alkyl phenyl group Chemical group 0.000 description 2
- 125000002947 alkylene group Chemical group 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 239000001099 ammonium carbonate Substances 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
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 239000004359 castor oil Substances 0.000 description 2
- 235000019438 castor oil Nutrition 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 150000003950 cyclic amides Chemical class 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 125000004185 ester group Chemical group 0.000 description 2
- 150000002148 esters Chemical group 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000007518 final polishing process Methods 0.000 description 2
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 2
- 125000000623 heterocyclic group Chemical group 0.000 description 2
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 125000005462 imide group Chemical group 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- IBIKHMZPHNKTHM-RDTXWAMCSA-N merck compound 25 Chemical compound C1C[C@@H](C(O)=O)[C@H](O)CN1C(C1=C(F)C=CC=C11)=NN1C(=O)C1=C(Cl)C=CC=C1C1CC1 IBIKHMZPHNKTHM-RDTXWAMCSA-N 0.000 description 2
- 229910052752 metalloid Inorganic materials 0.000 description 2
- 150000002738 metalloids Chemical class 0.000 description 2
- 235000019426 modified starch Nutrition 0.000 description 2
- 150000002763 monocarboxylic acids Chemical class 0.000 description 2
- 125000002560 nitrile group Chemical group 0.000 description 2
- 239000011146 organic particle Substances 0.000 description 2
- 125000006353 oxyethylene group Chemical group 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 2
- 150000004023 quaternary phosphonium compounds Chemical class 0.000 description 2
- 239000002994 raw material Substances 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
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000005622 tetraalkylammonium hydroxides Chemical class 0.000 description 2
- VDZOOKBUILJEDG-UHFFFAOYSA-M tetrabutylammonium hydroxide Chemical compound [OH-].CCCC[N+](CCCC)(CCCC)CCCC VDZOOKBUILJEDG-UHFFFAOYSA-M 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- 229910021642 ultra pure water Inorganic materials 0.000 description 2
- 239000012498 ultrapure water Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 description 1
- 125000006701 (C1-C7) alkyl group Chemical group 0.000 description 1
- FFJCNSLCJOQHKM-CLFAGFIQSA-N (z)-1-[(z)-octadec-9-enoxy]octadec-9-ene Chemical compound CCCCCCCC\C=C/CCCCCCCCOCCCCCCCC\C=C/CCCCCCCC FFJCNSLCJOQHKM-CLFAGFIQSA-N 0.000 description 1
- QGLWBTPVKHMVHM-KTKRTIGZSA-N (z)-octadec-9-en-1-amine Chemical compound CCCCCCCC\C=C/CCCCCCCCN QGLWBTPVKHMVHM-KTKRTIGZSA-N 0.000 description 1
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- OQZAQBGJENJMHT-UHFFFAOYSA-N 1,3-dibromo-5-methoxybenzene Chemical compound COC1=CC(Br)=CC(Br)=C1 OQZAQBGJENJMHT-UHFFFAOYSA-N 0.000 description 1
- OTIXUSNHAKOJBX-UHFFFAOYSA-N 1-(aziridin-1-yl)ethanone Chemical compound CC(=O)N1CC1 OTIXUSNHAKOJBX-UHFFFAOYSA-N 0.000 description 1
- PVOAHINGSUIXLS-UHFFFAOYSA-N 1-Methylpiperazine Chemical compound CN1CCNCC1 PVOAHINGSUIXLS-UHFFFAOYSA-N 0.000 description 1
- UZKWTJUDCOPSNM-UHFFFAOYSA-N 1-ethenoxybutane Chemical group CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 1
- OVGRCEFMXPHEBL-UHFFFAOYSA-N 1-ethenoxypropane Chemical group CCCOC=C OVGRCEFMXPHEBL-UHFFFAOYSA-N 0.000 description 1
- JWYVGKFDLWWQJX-UHFFFAOYSA-N 1-ethenylazepan-2-one Chemical compound C=CN1CCCCCC1=O JWYVGKFDLWWQJX-UHFFFAOYSA-N 0.000 description 1
- PBGPBHYPCGDFEZ-UHFFFAOYSA-N 1-ethenylpiperidin-2-one Chemical compound C=CN1CCCCC1=O PBGPBHYPCGDFEZ-UHFFFAOYSA-N 0.000 description 1
- XLPJNCYCZORXHG-UHFFFAOYSA-N 1-morpholin-4-ylprop-2-en-1-one Chemical compound C=CC(=O)N1CCOCC1 XLPJNCYCZORXHG-UHFFFAOYSA-N 0.000 description 1
- WLPAQAXAZQUXBG-UHFFFAOYSA-N 1-pyrrolidin-1-ylprop-2-en-1-one Chemical compound C=CC(=O)N1CCCC1 WLPAQAXAZQUXBG-UHFFFAOYSA-N 0.000 description 1
- LQXBZWFNAKZUNM-UHFFFAOYSA-N 16-methyl-1-(16-methylheptadecoxy)heptadecane Chemical compound CC(C)CCCCCCCCCCCCCCCOCCCCCCCCCCCCCCCC(C)C LQXBZWFNAKZUNM-UHFFFAOYSA-N 0.000 description 1
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 1
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- KIZQNNOULOCVDM-UHFFFAOYSA-M 2-hydroxyethyl(trimethyl)azanium;hydroxide Chemical compound [OH-].C[N+](C)(C)CCO KIZQNNOULOCVDM-UHFFFAOYSA-M 0.000 description 1
- DSSAWHFZNWVJEC-UHFFFAOYSA-N 3-(ethenoxymethyl)heptane Chemical group CCCCC(CC)COC=C DSSAWHFZNWVJEC-UHFFFAOYSA-N 0.000 description 1
- DFSGINVHIGHPES-UHFFFAOYSA-N 3-ethenyl-4h-1,3-oxazin-2-one Chemical compound C=CN1CC=COC1=O DFSGINVHIGHPES-UHFFFAOYSA-N 0.000 description 1
- ZMALNMQOXQXZRO-UHFFFAOYSA-N 4-ethenylmorpholin-3-one Chemical compound C=CN1CCOCC1=O ZMALNMQOXQXZRO-UHFFFAOYSA-N 0.000 description 1
- HDYTUPZMASQMOH-UHFFFAOYSA-N 4-ethenylmorpholine-3,5-dione Chemical compound C=CN1C(=O)COCC1=O HDYTUPZMASQMOH-UHFFFAOYSA-N 0.000 description 1
- WIGIPJGWVLNDAF-UHFFFAOYSA-N 8-methyl-1-(8-methylnonoxy)nonane Chemical compound CC(C)CCCCCCCOCCCCCCCC(C)C WIGIPJGWVLNDAF-UHFFFAOYSA-N 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 238000012935 Averaging Methods 0.000 description 1
- 229910052580 B4C Inorganic materials 0.000 description 1
- 238000004438 BET method Methods 0.000 description 1
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229910020366 ClO 4 Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000858 Cyclodextrin Polymers 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 229920000896 Ethulose Polymers 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 239000001859 Ethyl hydroxyethyl cellulose Substances 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 229910002601 GaN Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 1
- NKSOSPOXQKNIKJ-CLFAGFIQSA-N Polyoxyethylene dioleate Polymers CCCCCCCC\C=C/CCCCCCCC(=O)OCCOC(=O)CCCCCCC\C=C/CCCCCCCC NKSOSPOXQKNIKJ-CLFAGFIQSA-N 0.000 description 1
- 229920001213 Polysorbate 20 Polymers 0.000 description 1
- 239000004373 Pullulan Substances 0.000 description 1
- 229920001218 Pullulan Polymers 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 239000004147 Sorbitan trioleate Substances 0.000 description 1
- PRXRUNOAOLTIEF-ADSICKODSA-N Sorbitan trioleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](OC(=O)CCCCCCC\C=C/CCCCCCCC)[C@H]1OC[C@H](O)[C@H]1OC(=O)CCCCCCC\C=C/CCCCCCCC PRXRUNOAOLTIEF-ADSICKODSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 150000003926 acrylamides Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229920005603 alternating copolymer Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000005354 aluminosilicate glass Substances 0.000 description 1
- LHIJANUOQQMGNT-UHFFFAOYSA-N aminoethylethanolamine Chemical compound NCCNCCO LHIJANUOQQMGNT-UHFFFAOYSA-N 0.000 description 1
- IMUDHTPIFIBORV-UHFFFAOYSA-N aminoethylpiperazine Chemical compound NCCN1CCNCC1 IMUDHTPIFIBORV-UHFFFAOYSA-N 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 239000003429 antifungal agent Substances 0.000 description 1
- 229940121375 antifungal agent Drugs 0.000 description 1
- 150000003851 azoles Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- OEYIOHPDSNJKLS-UHFFFAOYSA-N choline Chemical compound C[N+](C)(C)CCO OEYIOHPDSNJKLS-UHFFFAOYSA-N 0.000 description 1
- 229960001231 choline Drugs 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000011246 composite particle Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 229920000359 diblock copolymer Polymers 0.000 description 1
- CEJLBZWIKQJOAT-UHFFFAOYSA-N dichloroisocyanuric acid Chemical compound ClN1C(=O)NC(=O)N(Cl)C1=O CEJLBZWIKQJOAT-UHFFFAOYSA-N 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical class C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- MEGHWIAOTJPCHQ-UHFFFAOYSA-N ethenyl butanoate Chemical group CCCC(=O)OC=C MEGHWIAOTJPCHQ-UHFFFAOYSA-N 0.000 description 1
- LZWYWAIOTBEZFN-UHFFFAOYSA-N ethenyl hexanoate Chemical group CCCCCC(=O)OC=C LZWYWAIOTBEZFN-UHFFFAOYSA-N 0.000 description 1
- BLZSRIYYOIZLJL-UHFFFAOYSA-N ethenyl pentanoate Chemical group CCCCC(=O)OC=C BLZSRIYYOIZLJL-UHFFFAOYSA-N 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical group CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 235000019326 ethyl hydroxyethyl cellulose Nutrition 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 229910021397 glassy carbon Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 150000003951 lactams Chemical group 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- RQAKESSLMFZVMC-UHFFFAOYSA-N n-ethenylacetamide Chemical compound CC(=O)NC=C RQAKESSLMFZVMC-UHFFFAOYSA-N 0.000 description 1
- HAZULKRCTMKQAS-UHFFFAOYSA-N n-ethenylbutanamide Chemical compound CCCC(=O)NC=C HAZULKRCTMKQAS-UHFFFAOYSA-N 0.000 description 1
- IUWVWLRMZQHYHL-UHFFFAOYSA-N n-ethenylpropanamide Chemical compound CCC(=O)NC=C IUWVWLRMZQHYHL-UHFFFAOYSA-N 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920002114 octoxynol-9 Polymers 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- DJFBJKSMACBYBD-UHFFFAOYSA-N phosphane;hydrate Chemical group O.P DJFBJKSMACBYBD-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 229960005141 piperazine Drugs 0.000 description 1
- 229960003506 piperazine hexahydrate Drugs 0.000 description 1
- AVRVZRUEXIEGMP-UHFFFAOYSA-N piperazine;hexahydrate Chemical compound O.O.O.O.O.O.C1CNCCN1 AVRVZRUEXIEGMP-UHFFFAOYSA-N 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920000259 polyoxyethylene lauryl ether Polymers 0.000 description 1
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 description 1
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 150000003140 primary amides Chemical group 0.000 description 1
- 235000019423 pullulan Nutrition 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 235000019337 sorbitan trioleate Nutrition 0.000 description 1
- 229960000391 sorbitan trioleate Drugs 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 230000001629 suppression Effects 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
- 150000005621 tetraalkylammonium salts Chemical class 0.000 description 1
- 229940073455 tetraethylammonium hydroxide Drugs 0.000 description 1
- LRGJRHZIDJQFCL-UHFFFAOYSA-M tetraethylazanium;hydroxide Chemical compound [OH-].CC[N+](CC)(CC)CC LRGJRHZIDJQFCL-UHFFFAOYSA-M 0.000 description 1
- ZOMVKCHODRHQEV-UHFFFAOYSA-M tetraethylphosphanium;hydroxide Chemical compound [OH-].CC[P+](CC)(CC)CC ZOMVKCHODRHQEV-UHFFFAOYSA-M 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- CRUVUWATNULHFA-UHFFFAOYSA-M tetramethylphosphanium;hydroxide Chemical compound [OH-].C[P+](C)(C)C CRUVUWATNULHFA-UHFFFAOYSA-M 0.000 description 1
- JVOPCCBEQRRLOJ-UHFFFAOYSA-M tetrapentylazanium;hydroxide Chemical compound [OH-].CCCCC[N+](CCCCC)(CCCCC)CCCCC JVOPCCBEQRRLOJ-UHFFFAOYSA-M 0.000 description 1
- LPSKDVINWQNWFE-UHFFFAOYSA-M tetrapropylazanium;hydroxide Chemical compound [OH-].CCC[N+](CCC)(CCC)CCC LPSKDVINWQNWFE-UHFFFAOYSA-M 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 229910001428 transition metal ion Inorganic materials 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- 229920000428 triblock copolymer Polymers 0.000 description 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
Definitions
- the present invention relates to a polishing composition.
- This application claims priority based on Japanese Patent Application No. 2018-69647 filed on Mar. 30, 2018, the entire contents of which are incorporated herein by reference.
- Precision polishing using a polishing composition is performed on material surfaces such as metal, metalloid, nonmetal, and oxides thereof.
- the surface of a silicon wafer used as a component of a semiconductor device or the like is generally finished into a high-quality mirror surface through a lapping process (rough polishing process) and a polishing process (precision polishing process).
- the polishing process typically includes a preliminary polishing process (preliminary polishing process) and a final polishing process (final polishing process).
- Patent document 1 is mentioned as technical literature regarding the polishing composition mainly used for the use which grinds semiconductor substrates, such as a silicon wafer.
- a polishing composition used in a finishing polishing process (particularly, a polishing polishing process for a semiconductor substrate such as a silicon wafer or other substrate) is required to have a performance that realizes a surface having low haze and less surface defects after polishing.
- Many polishing compositions for such applications contain a water-soluble polymer for the purpose of protecting the surface of a polishing object and improving wettability in addition to abrasive grains and water.
- Patent Document 1 discloses a polishing composition for silicon wafers containing hydroxyethyl cellulose or polyvinyl alcohol (PVA) as a water-soluble polymer.
- the wettability of the surface after polishing can be stably improved.
- the conventional polishing composition using the polyvinyl alcohol polymer tends to be insufficient in reducing the surface defects.
- This invention is made
- a polishing composition comprising abrasive grains and water is provided.
- the polishing composition further includes a polyvinyl alcohol polymer and a dispersant for the polyvinyl alcohol polymer.
- the dispersant includes an ether bond in the molecule.
- the molar ratio of the content of the polyvinyl alcohol polymer to the content of the dispersant is 0.01 or more and 10 or less.
- the polishing composition containing the polyvinyl alcohol-based polymer in which aggregation is suppressed, surface defects of the polished object after polishing are appropriately reduced.
- polyvinyl alcohol polymer dispersant means that the dispersibility of the polyvinyl alcohol polymer is improved by adding it to the polishing composition as compared with the polishing composition not containing the dispersant. It refers to an agent (compound) having the performance of Typically, the dispersant for the polyvinyl alcohol polymer is a compound having the ability to improve the dispersion stability of the polyvinyl alcohol polymer in an aqueous solution. In the present specification, unless otherwise specified, what is simply described as “dispersant” means “a dispersant for a polyvinyl alcohol polymer”.
- the “surface defect” in the present specification includes LPD (Light Point Defectives) which means a foreign substance generally called a particle.
- LPD Light Point Defectives
- the occurrence of such surface defects can be evaluated by measuring the number of LPDs detected by a wafer inspection apparatus used in examples described later.
- the polyvinyl alcohol-based polymer has a weight average molecular weight of 3 ⁇ 10 4 or more. Since a polyvinyl alcohol polymer having such a weight average molecular weight tends to aggregate more easily, it is meaningful to apply the present invention to a polishing composition containing a polyvinyl alcohol polymer having the above weight average molecular weight.
- the weight average molecular weight of the dispersant is smaller than the weight average molecular weight of the polyvinyl alcohol polymer. According to such a configuration, it is possible to realize a polishing composition capable of appropriately suppressing aggregation of the polyvinyl alcohol-based polymer and reducing surface defects of the object to be polished.
- the dispersant contains polyoxyethylene alkyl ether. According to the configuration containing such a dispersant, it is possible to realize a polishing composition in which aggregation of the polyvinyl alcohol-based polymer is more appropriately suppressed and surface defect reduction properties are further improved.
- the dispersant has a weight average molecular weight of 1500 or less. According to the configuration containing such a dispersant, it is possible to realize a polishing composition in which aggregation of the polyvinyl alcohol-based polymer is more appropriately suppressed and surface defect reduction properties are further improved.
- the abrasive grains are silica particles.
- the surface defect defects can be effectively reduced while maintaining the polishing rate.
- the polishing composition according to a preferred embodiment disclosed herein is used for polishing a surface made of silicon.
- the surface of the polishing object is protected by the action of the polyvinyl alcohol polymer in which aggregation is suppressed by the action of the dispersant in polishing where the polishing object is a surface made of silicon.
- defects on the surface can be appropriately reduced.
- the polishing composition disclosed herein contains abrasive grains.
- the abrasive grains serve to mechanically polish the surface of the object to be polished.
- the material and properties of the abrasive grains are not particularly limited, and can be appropriately selected depending on the purpose of use and usage of the polishing composition.
- Examples of the abrasive grains include inorganic particles, organic particles, and organic-inorganic composite particles.
- the inorganic particles include silica particles, alumina particles, cerium oxide particles, chromium oxide particles, titanium dioxide particles, zirconium oxide particles, magnesium oxide particles, manganese dioxide particles, zinc oxide particles, oxide particles such as bengara particles; Examples thereof include nitride particles such as silicon nitride particles and boron nitride particles; carbide particles such as silicon carbide particles and boron carbide particles; diamond particles; carbonates such as calcium carbonate and barium carbonate.
- Specific examples of the organic particles include polymethyl methacrylate (PMMA) particles and poly (meth) acrylic acid particles (here, (meth) acrylic acid is a generic term for acrylic acid and methacrylic acid). And polyacrylonitrile particles. Such abrasive grains may be used singly or in combination of two or more.
- abrasive grains inorganic particles are preferable, and particles made of metal or metalloid oxide are preferable, and silica particles are particularly preferable.
- a polishing composition that can be used for polishing (for example, finish polishing) of an object to be polished having a surface made of silicon, such as a silicon wafer described later, it is particularly meaningful to employ silica particles as abrasive grains.
- the technique disclosed here can be preferably implemented, for example, in a mode in which the abrasive grains are substantially composed of silica particles.
- substantially means 95% by weight or more (preferably 98% by weight or more, more preferably 99% by weight or more, or 100% by weight) of the particles constituting the abrasive grains. It means silica particles.
- silica particles include colloidal silica, fumed silica, precipitated silica and the like.
- Silica particles can be used singly or in combination of two or more.
- the use of colloidal silica is particularly preferred because it is easy to obtain a polished surface with excellent surface quality after polishing.
- colloidal silica for example, colloidal silica produced using water glass (Na silicate) as a raw material by an ion exchange method, or alkoxide colloidal silica (colloidal silica produced by hydrolysis condensation reaction of alkoxysilane) is preferably employed. be able to.
- Colloidal silica can be used singly or in combination of two or more.
- the true specific gravity of the abrasive constituent material is preferably 1.5 or more, more preferably 1.6 or more, and even more preferably 1.7 or more.
- the upper limit of the true specific gravity of the abrasive grain constituent material is not particularly limited, but is typically 2.3 or less, for example, 2.2 or less.
- a measured value by a liquid replacement method using ethanol as a replacement liquid can be adopted.
- the BET diameter of the abrasive grains is not particularly limited, but is preferably 5 nm or more, more preferably 10 nm or more from the viewpoint of polishing efficiency and the like. From the viewpoint of obtaining a higher polishing effect (for example, effects such as haze reduction and defect removal), the BET diameter is preferably 15 nm or more, and more preferably 20 nm or more (for example, more than 20 nm). Further, from the viewpoint of preventing scratches, the BET diameter of the abrasive grains is preferably 100 nm or less, more preferably 50 nm or less, and further preferably 40 nm or less.
- the technique disclosed herein is preferably applied to polishing in which a high-quality surface is required after polishing because a high-quality surface (for example, a surface having a small number of LPDs) is easily obtained.
- a high-quality surface for example, a surface having a small number of LPDs
- an abrasive having a BET diameter of 35 nm or less is preferable.
- the particle diameter calculated by the formula.
- the specific surface area can be measured using, for example, a surface area measuring device manufactured by Micromeritex Corporation, a trade name “Flow Sorb II 2300”.
- the shape (outer shape) of the abrasive grains may be spherical or non-spherical.
- specific examples of the non-spherical particles include a peanut shape (that is, a peanut shell shape), a bowl shape, a confetti shape, a rugby ball shape, and the like.
- abrasive grains in which many of the particles have a peanut shape or a bowl shape can be preferably used.
- the average value of the major axis / minor axis ratio (average aspect ratio) of the abrasive grains is theoretically 1.0 or more, preferably 1.05 or more, more preferably 1.1 or more. It is. By increasing the average aspect ratio, higher polishing efficiency can be realized.
- the average aspect ratio of the abrasive grains is preferably 3.0 or less, more preferably 2.0 or less, and still more preferably 1.5 or less, from the viewpoint of reducing scratches.
- the shape (outer shape) and average aspect ratio of the abrasive grains can be grasped by, for example, observation with an electron microscope.
- a predetermined number for example, 200
- SEM scanning electron microscope
- the value obtained by dividing the length of the long side (major axis value) by the length of the short side (minor axis value) is the major axis / minor axis ratio (aspect ratio).
- An average aspect ratio can be obtained by arithmetically averaging the aspect ratios of the predetermined number of particles.
- the polishing composition disclosed herein contains a polyvinyl alcohol polymer.
- the polyvinyl alcohol polymer is a water-soluble organic compound (typically a water-soluble polymer) containing a vinyl alcohol unit as its repeating unit.
- the vinyl alcohol unit (hereinafter also referred to as “VA unit”) is a structural portion represented by the following chemical formula: —CH 2 —CH (OH) —.
- the VA unit can be produced, for example, by hydrolyzing (saponifying) a repeating unit (—CH 2 —CH (OCOCH 3 ) —) having a structure in which vinyl acetate is vinyl polymerized. According to the polishing composition containing a polyvinyl alcohol polymer, the wettability of the surface of the polishing object is improved, and a surface having low haze and few surface defects is easily realized after polishing.
- the polyvinyl alcohol polymer has a hydroxy group (OH group) in the molecule.
- a polyvinyl alcohol-type polymer has a property which is easy to aggregate by the effect
- the ability to reduce surface defects after polishing may decrease.
- the use of a polyvinyl alcohol polymer and a polyvinyl alcohol polymer dispersant described later in combination effectively suppresses aggregation of the polyvinyl alcohol polymer and improves the dispersion stability. Compositions can be realized.
- the polyvinyl alcohol-based polymer may contain only VA units as repeating units, and may contain repeating units other than VA units (hereinafter also referred to as “non-VA units”) in addition to VA units.
- the non-VA unit includes an oxyalkylene group, a carboxy group, a sulfo group, an amino group, a hydroxyl group, an amide group, an imide group, a nitrile group, an ether group, an ester group, and these It may be a repeating unit having at least one structure selected from the salts of
- the non-VA unit is a repeating unit having at least one structure selected from oxyalkylene groups, carboxy groups, sulfo groups, amino groups, hydroxyl groups, amide groups, imide groups, nitrile groups, ester groups, and salts thereof.
- the polyvinyl alcohol-based polymer may be a random copolymer containing VA units and non-VA units, or may be a block copolymer or a graft copolymer.
- the polyvinyl alcohol-based polymer may include only one type of non-VA unit as the non-VA unit, or may include two or more types of non-VA units.
- the ratio of the number of moles of VA units to the number of moles of all repeating units constituting the polyvinyl alcohol polymer may be, for example, 5% or more, 10% or more, 20% or more, or 30% or more. .
- the ratio of the number of moles of the VA unit may be 50% or more, 65% or more, 75% or more, 80% or more, It may be 90% or more (for example, 95% or more, or 98% or more).
- Substantially 100% of the repeating units constituting the polyvinyl alcohol polymer may be VA units.
- substantially 100% means that at least intentionally, the polyvinyl alcohol polymer does not contain a non-VA unit.
- the surface of the object to be polished has high wettability, and the surface having few surface defects after polishing is obtained. Easy to realize. Moreover, since PVA with a high saponification tendency tends to aggregate more easily, it is meaningful to apply this invention to PVA with a high saponification degree (for example, PVA with a saponification degree 98% or more).
- PVA polyvinyl alcohol
- the ratio of the number of moles of VA units to the number of moles of all repeating units constituting the polyvinyl alcohol-based polymer may be, for example, 95% or less, may be 90% or less, and may be 80% or less. It may be 70% or less.
- the content of VA units (content based on weight) in the polyvinyl alcohol polymer may be, for example, 5% by weight or more, 10% by weight or more, 20% by weight or more, or 30% by weight or more.
- the content of the VA unit may be 50% by weight or more (eg, more than 50% by weight), 70% by weight or more, and 80% by weight or more ( For example, it may be 90% by weight or more, or 95% by weight or more, or 98% by weight or more).
- Substantially 100% by weight of the repeating units constituting the polyvinyl alcohol-based polymer may be VA units.
- substantially 100% by weight means that at least intentionally, a non-VA unit is not included as a repeating unit constituting the polyvinyl alcohol-based polymer.
- the content of VA units in the polyvinyl alcohol-based polymer may be, for example, 95% by weight or less, 90% by weight or less, 80% by weight or less, or 70% by weight or less. .
- the polyvinyl alcohol-based polymer may contain a plurality of polymer chains having different VA unit contents in the same molecule.
- the polymer chain refers to a part (segment) that constitutes a part of a polymer of one molecule.
- the polyvinyl alcohol-based polymer has a polymer chain A having a VA unit content of more than 50% by weight and a VA unit content of less than 50% by weight (that is, a non-VA unit content of more than 50% by weight).
- the polymer chain B may be contained in the same molecule.
- the polymer chain A may contain only VA units as repeating units, and may contain non-VA units in addition to VA units.
- the content of the VA unit in the polymer chain A may be 60% by weight or more, 70% by weight or more, 80% by weight or more, or 90% by weight or more. In some embodiments, the content of VA units in the polymer chain A may be 95% by weight or more, or 98% by weight or more. Substantially 100% by weight of the repeating units constituting the polymer chain A may be VA units.
- the polymer chain B may contain only non-VA units as repeating units, and may contain VA units in addition to non-VA units.
- the content of non-VA units in the polymer chain B may be 60% by weight or more, 70% by weight or more, 80% by weight or more, or 90% by weight or more. In some embodiments, the content of non-VA units in the polymer chain B may be 95% by weight or more, or 98% by weight or more. Substantially 100% by weight of the repeating units constituting the polymer chain B may be non-VA units.
- polyvinyl alcohol polymer containing polymer chain A and polymer chain B in the same molecule examples include block copolymers and graft copolymers containing these polymer chains.
- the graft copolymer may be a graft copolymer having a structure in which a polymer chain B (side chain) is grafted to a polymer chain A (main chain), and the polymer chain B (main chain) is polymer chain A (side). It may be a graft copolymer having a structure in which the chain) is grafted.
- a polyvinyl alcohol polymer having a structure in which a polymer chain B is grafted to a polymer chain A can be used.
- Examples of the polymer chain B include a polymer chain having a repeating unit derived from an N-vinyl type monomer as a main repeating unit, and a polymer having a repeating unit derived from an N- (meth) acryloyl type monomer as a main repeating unit.
- the main repeating unit means a repeating unit contained in an amount exceeding 50% by weight unless otherwise specified.
- a polymer chain having an N-vinyl type monomer as a main repeating unit that is, an N-vinyl polymer chain may be mentioned.
- the content of repeating units derived from N-vinyl type monomers in the N-vinyl polymer chain is typically more than 50% by weight, may be 70% by weight or more, and is 85% by weight or more. It may be 95% by weight or more.
- the polymer unit B may be a repeating unit derived from substantially all N-vinyl type monomers.
- N-vinyl type monomer examples include a monomer having a nitrogen-containing heterocyclic ring (for example, a lactam ring) and an N-vinyl chain amide.
- N-vinyl lactam type monomers include N-vinyl pyrrolidone, N-vinyl piperidone, N-vinyl morpholinone, N-vinyl caprolactam, N-vinyl-1,3-oxazin-2-one, N-vinyl- 3,5-morpholinedione and the like can be mentioned.
- Specific examples of the N-vinyl chain amide include N-vinylacetamide, N-vinylpropionic acid amide, N-vinylbutyric acid amide and the like.
- the polymer chain B is, for example, an N-vinyl polymer chain in which more than 50% by weight (for example, 70% by weight or more, 85% by weight or more, or 95% by weight or more) of the repeating unit is an N-vinylpyrrolidone unit. obtain. Substantially all of the repeating units constituting the polymer chain B may be N-vinylpyrrolidone units.
- polymer chain B includes a polymer chain having a repeating unit derived from an N- (meth) acryloyl type monomer as a main repeating unit, that is, an N- (meth) acryloyl polymer chain.
- the content of repeating units derived from the N- (meth) acryloyl type monomer in the N- (meth) acryloyl-based polymer chain is typically more than 50% by weight and may be 70% by weight or more. % By weight or 95% by weight or more may be used. Repeating units derived from N- (meth) acryloyl type monomers may be sufficient as the polymer chain B.
- N- (meth) acryloyl type monomer examples include a chain amide having an N- (meth) acryloyl group and a cyclic amide having an N- (meth) acryloyl group.
- chain amides having an N- (meth) acryloyl group include (meth) acrylamide; N-methyl (meth) acrylamide, N-ethyl (meth) acrylamide, N-propyl (meth) acrylamide, N-isopropyl ( N-alkyl (meth) acrylamides such as (meth) acrylamide and Nn-butyl (meth) acrylamide; N, N-dimethyl (meth) acrylamide, N, N-diethyl (meth) acrylamide, N, N-dipropyl (meta) ) Acrylamide, N, N-diisopropyl (meth) acrylamide, N, N-dialkyl (meth) acrylamide
- polymer chain B examples include a polymer chain containing an oxyalkylene unit as a main repeating unit, that is, an oxyalkylene polymer chain.
- the content of oxyalkylene units in the oxyalkylene polymer chain is typically more than 50% by weight, 70% by weight or more, 85% by weight or more, 95% by weight or more. There may be. Substantially all of the repeating units contained in the polymer chain B may be oxyalkylene units.
- oxyalkylene units include oxyethylene units, oxypropylene units, oxybutylene units, and the like. Each such oxyalkylene unit can be a repeating unit derived from the corresponding alkylene oxide.
- the oxyalkylene unit contained in the oxyalkylene polymer chain may be one kind or two or more kinds. For example, it may be an oxyalkylene polymer chain containing a combination of oxyethylene units and oxypropylene units. In the oxyalkylene polymer chain containing two or more types of oxyalkylene units, these oxyalkylene units may be a random copolymer of a corresponding alkylene oxide, and may be a block copolymer or a graft copolymer. Also good.
- polymer chain B examples include a polymer chain containing, as a main repeating unit, an alkyl vinyl ether unit, a structural unit obtained by acetalizing polyvinyl alcohol and an aldehyde, and the like.
- vinyl ether units alkyl vinyl ether units
- vinyl ester units derived from monocarboxylic acids having 1 to 7 carbon atoms (monocarboxylic acid vinyl ester units)
- Examples of vinyl ether units having an alkyl group having 1 to 10 carbon atoms include propyl vinyl ether units, butyl vinyl ether units, 2-ethylhexyl vinyl ether units and the like.
- Examples of vinyl ester units derived from monocarboxylic acids having 1 to 7 carbon atoms include vinyl propanoate units, vinyl butanoate units, vinyl pentanoate units, vinyl hexanoate units, and the like.
- the polyvinyl alcohol polymer used in the polishing composition disclosed herein may be unmodified PVA (non-modified PVA), and is a modified PVA that is a copolymer containing VA units and non-VA units. It may be. A combination of non-modified PVA and modified PVA may be used.
- the polyvinyl alcohol polymer used in the polishing composition disclosed herein preferably does not contain an ether bond.
- the present invention even when non-modified PVA is used as the polyvinyl alcohol polymer, a polishing composition in which aggregation of the non-modified PVA is suitably suppressed can be obtained. For this reason, it is more meaningful to apply the present invention to a polishing composition containing non-modified PVA.
- the content of the modified PVA is preferably less than 50% by weight, more preferably based on the total amount of the polyvinyl alcohol-based polymer. It is 30% by weight or less, more preferably 10% by weight or less, 5% by weight or less, or 1% by weight or less.
- polyvinyl alcohol (PVA) containing only non-modified PVA can be preferably used as the polyvinyl alcohol-based polymer.
- the weight average molecular weight (Mw) of the polyvinyl alcohol polymer used in the polishing composition disclosed herein is not particularly limited.
- the Mw of the polyvinyl alcohol polymer is usually 2 ⁇ 10 3 or more, may be 5 ⁇ 10 3 or more, and may be 1 ⁇ 10 4 or more.
- the Mw of the polyvinyl alcohol polymer increases, the wettability of the surface after polishing tends to increase. Further, since the dispersion stability of the polyvinyl alcohol polymer tends to decrease as the Mw of the polyvinyl alcohol polymer increases, the significance of application of the present invention increases.
- the Mw of the polyvinyl alcohol polymer used in the polishing composition disclosed herein is preferably 3 ⁇ 10 4 or more, more preferably 4 ⁇ 10 4 or more, and further preferably 5 ⁇ 10 4 or more, particularly preferably 6 ⁇ 10 4 or more (for example, 6.5 ⁇ 10 4 or more).
- the upper limit of Mw of the polyvinyl alcohol polymer used in the polishing composition disclosed herein is not particularly limited.
- the Mw of the polyvinyl alcohol-based polymer is usually suitably 100 ⁇ 10 4 or less, preferably 30 ⁇ 10 4 or less, and may be 20 ⁇ 10 4 or less (for example, 15 ⁇ 10 4 or less). From the viewpoint of achieving both the polishing rate and the surface protection of the object to be polished, the Mw of the polyvinyl alcohol-based polymer may be 10 ⁇ 10 4 or less, or 8 ⁇ 10 4 or less.
- the weight average molecular weight (Mw) of the polyvinyl alcohol polymer, the dispersant, the water-soluble polymer and the surfactant is a value based on an aqueous gel permeation chromatography (GPC) (aqueous, polyethylene oxide equivalent). ) Can be adopted.
- GPC gel permeation chromatography
- HLC-8320GPC aqueous, polyethylene oxide equivalent
- the polishing composition disclosed herein contains a polyvinyl alcohol polymer dispersant (hereinafter also simply referred to as “dispersant”). According to the technique disclosed herein, the dispersant has at least one ether bond in the molecule. According to the polishing composition containing both the dispersant and the polyvinyl alcohol-based polymer, it is possible to realize a polishing composition in which aggregation of the polyvinyl alcohol-based polymer is suppressed and dispersion stability is improved.
- a polyvinyl alcohol polymer dispersant hereinafter also simply referred to as “dispersant”. According to the technique disclosed herein, the dispersant has at least one ether bond in the molecule. According to the polishing composition containing both the dispersant and the polyvinyl alcohol-based polymer, it is possible to realize a polishing composition in which aggregation of the polyvinyl alcohol-based polymer is suppressed and dispersion stability is improved.
- the dispersant contained in the polishing composition disclosed herein various compounds can be used with an appropriate content without any limitation as long as an ether bond is included in the molecule.
- the dispersant contained in the polishing composition disclosed herein may be a compound having one ether bond in the molecule or a polyether having two or more ether bonds in the molecule. .
- the dispersant may be a polymer compound or a compound that is not a polymer.
- the ether bond may be contained in the polymer main chain, in the side chain, or in both the main chain and the side chain. It may be.
- the dispersant may generally be a compound that can be grasped as a surfactant.
- the said dispersing agent can be used individually by 1 type or in combination of 2 or more types.
- the dispersant is preferably water-soluble.
- Examples of compounds having one ether bond in the molecule include diethyl ether and tetrahydrofuran.
- the dispersant is a polyether having two or more ether bonds in the molecule. It is preferable.
- a polyether having an ether bond in the main chain may be mentioned.
- the polyether having an ether bond in the main chain include oxyalkylene polymers such as polyethylene glycol, polypropylene glycol, and polytetramethylene glycol; polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene alkyl amine, Polyoxyalkylene derivatives such as polyoxyethylene fatty acid esters, polyoxyethylene glyceryl ether fatty acid esters, polyoxyethylene sorbitan fatty acid esters (for example, polyoxyalkylene adducts); copolymers of plural types of oxyalkylene (for example, diblock) Type copolymer, triblock type copolymer, random type copolymer, alternating copolymer); and the like.
- other examples include cellulose derivatives, starch derivatives, and the like.
- a block copolymer of ethylene oxide (EO) and propylene oxide (PO) (diblock copolymer, PEO (polyethylene oxide) -PPO (polypropylene oxide) -PEO triblock, PPO- Oxyalkylene copolymers such as PEO-PPO type triblock copolymers, etc., random copolymers of EO and PO;
- Oxyalkylene polymers such as polyethylene glycol; polyoxyethylene propyl ether, polyoxyethylene butyl ether, polyoxyethylene pentyl ether, polyoxyethylene hexyl ether, polyoxyethylene octyl ether, polyoxyethylene-2-ethylhexyl ether, polyoxyethylene Nonyl ether, polyoxyethylene decyl ether, polyoxyethylene isodecyl ether, polyoxyethylene tridecyl ether, polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxy
- cellulose derivatives such as hydroxyethyl cellulose (HEC), hydroxypropyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, methyl cellulose, ethyl cellulose, ethyl hydroxyethyl cellulose, carboxymethyl cellulose; pregelatinized starch, pullulan, carboxymethyl starch, And starch derivatives such as cyclodextrin;
- dispersants that can be suitably used include polyethers having an ether bond in the side chain.
- examples of the polyether having an ether bond in the side chain include polyacryloylmorpholine (PACMO).
- polyoxyethylene alkyl ether HEC and PACMO may be mentioned as dispersants suitably used for the polishing composition disclosed herein.
- polyoxyethylene alkyl ether is preferred.
- the number of carbon atoms of the alkyl group in the polyoxyethylene alkyl ether that can be used here is not particularly limited.
- the alkyl group preferably has 5 or more carbon atoms, more preferably 6 or more, and still more preferably 7 or more.
- the alkyl group preferably has 12 or less carbon atoms, more preferably 11 or less, still more preferably 10 or less, and particularly preferably 9 or less.
- the alkyl group has 8 carbon atoms, for example.
- the number of moles of ethylene oxide added in the polyoxyethylene alkyl ether is not particularly limited, but is preferably 4 or more, more preferably 5 or more, still more preferably 6 or more, and preferably 10 or less.
- the dispersant used in the polishing composition disclosed herein is preferably a polyoxyethylene octyl ether having an ethylene oxide addition mole number of 4 to 10 (for example, 6). Can be used.
- the ratio of the content of the polyvinyl alcohol polymer and the dispersant contained in the polishing composition is appropriate. It is preferably designed to be in the range.
- the molar ratio of the content of the polyvinyl alcohol-based polymer to the content of the dispersant in the polishing composition is preferably 0.01 or more and 10 or less, more preferably 0.02 or more and 5 or less (for example, 0.8. 04 to 4).
- the molar ratio of the content of the polyvinyl alcohol polymer to the content of the dispersant in the polishing composition is 1 or less. Preferably, it is 0.5 or less, more preferably 0.1 or less (for example, 0.07 or less). Moreover, the molar ratio of the content of the polyvinyl alcohol polymer to the content of the dispersant in such an embodiment is usually 0.01 or more, preferably 0.02 or more, more preferably 0.03 or more. Yes, more preferably 0.04 or more. When the polyvinyl alcohol polymer and the dispersant are contained at such a blending ratio, aggregation of the polyvinyl alcohol polymer is appropriately suppressed, and a polishing composition that can reduce surface defects after polishing is easily realized.
- a polyoxyalkylene derivative such as polyoxyethylene alkyl ether
- the content of the polyvinyl alcohol-based polymer relative to the content of the dispersant in the polishing composition Is preferably 15 or less, more preferably 10 or less, and even more preferably 5 or less (for example, 4 or less).
- the molar ratio of the content of the polyvinyl alcohol polymer to the content of the dispersant in such an embodiment is usually 0.1 or more, preferably 0.3 or more, more preferably 0.5 or more. Yes, more preferably 1 or more.
- the weight average molecular weight (Mw) of the dispersant is not particularly limited.
- the Mw of the dispersant is usually 100 or more, preferably 200 or more, more preferably 300 or more.
- Mw of a dispersing agent is 100x10 ⁇ 4 > or less normally, Preferably it is 70x10 ⁇ 4 > or less, More preferably, it is 50x10 ⁇ 4 > or less.
- the Mw of the dispersant is preferably 3000 or less, more preferably 1500 or less, still more preferably 700 or less, and particularly preferably 500. It is as follows.
- the Mw of the dispersant is preferably 100 or more, more preferably 200 or more, and still more preferably 300 or more. According to the polishing composition containing the dispersant having Mw in such a range, surface defects after polishing can be highly reduced.
- the Mw of the dispersant may be 1 ⁇ 10 4 or more, and 5 ⁇ 10 4 may be more, it may also be 10 ⁇ 10 4 or more, may be 20 ⁇ 10 4 or more. Further, the Mw of the dispersant may be 100 ⁇ 10 4 or less, 50 ⁇ 10 4 or less, 45 ⁇ 10 4 or less, or 40 ⁇ 10 4 or less. .
- the Mw of the dispersant is smaller than the Mw of the polyvinyl alcohol polymer. According to the polishing composition containing the dispersant having Mw, the polished surface can be appropriately protected, and surface defects after polishing can be highly reduced.
- a compound having an Mw of less than 1 ⁇ 10 4 and a compound having an Mw of 1 ⁇ 10 4 or more may be used in combination.
- a polyoxyalkylene derivative such as polyoxyethylene alkyl ether and a water-soluble polymer containing a repeating unit having an ether bond (typically HEC or PACMO) may be used in combination as the dispersant.
- HEC or PACMO water-soluble polymer containing a repeating unit having an ether bond
- the dispersant used in the polishing composition disclosed herein preferably contains a polyoxyalkylene derivative such as polyoxyethylene alkyl ether.
- the content of the water-soluble polymer with respect to the entire dispersant is preferably more than 50% by weight, more preferably 70% by weight or more. Yes, more preferably 80% by weight or more, 85% by weight or more, or 90% by weight or more.
- a compound having an Mw of less than 1 ⁇ 10 4 may be used alone.
- a polyoxyalkylene derivative such as polyoxyethylene alkyl ether is used as a dispersant.
- the polishing composition disclosed herein may further contain a water-soluble polymer other than the above-described polyvinyl alcohol-based polymer and dispersant as necessary, as long as the effects of the present invention are not significantly hindered.
- the water-soluble polymer may have at least one functional group selected from a cationic group, an anionic group, and a nonionic group in the molecule.
- the water-soluble polymer may have, for example, a hydroxyl group, a carboxy group, a sulfo group, a primary amide structure, a heterocyclic structure, a vinyl structure, etc. in the molecule. From the viewpoints of reducing aggregates and improving detergency, a nonionic polymer can be preferably employed as the water-soluble polymer.
- Examples of the water-soluble polymer include a polymer containing a nitrogen atom.
- the polymer containing a nitrogen atom any of a polymer containing a nitrogen atom in the main chain and a polymer having a nitrogen atom in a side chain functional group (pendant group) can be used.
- Examples of the polymer containing a nitrogen atom in the main chain include homopolymers and copolymers of N-acylalkylenimine type monomers.
- Specific examples of the N-acylalkyleneimine monomer include N-acetylethyleneimine, N-propionylethyleneimine and the like.
- the polymer having a nitrogen atom in the pendant group include a polymer containing an N-vinyl type monomer unit. For example, homopolymers and copolymers of N-vinylpyrrolidone can be employed.
- the polishing composition disclosed herein can be carried out in an embodiment that does not substantially contain a water-soluble polymer other than the polyvinyl alcohol polymer and the dispersant.
- the polishing composition disclosed herein may further contain a surfactant other than the above-described dispersant as required, as long as the effects of the present invention are not significantly hindered.
- a surfactant any of anionic, cationic, nonionic, and amphoteric can be used.
- the polishing composition disclosed herein can be carried out in a mode that does not substantially contain a surfactant other than the dispersant.
- ion-exchanged water deionized water
- pure water ultrapure water
- distilled water or the like
- the water to be used preferably has, for example, a total content of transition metal ions of 100 ppb or less in order to avoid as much as possible the action of other components contained in the polishing composition.
- the purity of water can be increased by operations such as removal of impurity ions with an ion exchange resin, removal of foreign matter with a filter, distillation, and the like.
- the polishing composition disclosed herein contains a basic compound.
- the basic compound refers to a compound having a function of dissolving in water and increasing the pH of an aqueous solution.
- an organic or inorganic basic compound containing nitrogen an alkali metal hydroxide, an alkaline earth metal hydroxide, various carbonates, bicarbonates, or the like can be used.
- Examples of basic compounds containing nitrogen include quaternary ammonium compounds, quaternary phosphonium compounds, ammonia, amines (preferably water-soluble amines), and the like. Such basic compounds can be used singly or in combination of two or more.
- alkali metal hydroxide examples include potassium hydroxide and sodium hydroxide.
- Specific examples of the carbonate or bicarbonate include ammonium bicarbonate, ammonium carbonate, potassium bicarbonate, potassium carbonate, sodium bicarbonate, sodium carbonate and the like.
- amines include methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, triethylamine, ethylenediamine, monoethanolamine, N- ( ⁇ -aminoethyl) ethanolamine, hexamethylenediamine, diethylenetriamine, triethylenetetramine, anhydrous piperazine , Piperazine hexahydrate, 1- (2-aminoethyl) piperazine, N-methylpiperazine, guanidine, azoles such as imidazole and triazole, and the like.
- quaternary phosphonium compound include quaternary phosphonium hydroxide such as tetramethylphosphonium hydroxide and tetraethylphosphonium hydroxide.
- quaternary ammonium salt typically a strong base
- a quaternary ammonium salt such as a tetraalkylammonium salt or a hydroxyalkyltrialkylammonium salt
- the anionic component in such a quaternary ammonium salt can be, for example, OH ⁇ , F ⁇ , Cl ⁇ , Br ⁇ , I ⁇ , ClO 4 ⁇ , BH 4 ⁇ and the like.
- the anion is OH - a is a quaternary ammonium salt, i.e., include quaternary ammonium hydroxide.
- quaternary ammonium hydroxide examples include hydroxides such as tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, tetrapentylammonium hydroxide, and tetrahexylammonium hydroxide.
- hydroxides such as tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, tetrapentylammonium hydroxide, and tetrahexylammonium hydroxide.
- Tetraalkylammonium hydroxide; hydroxyalkyltrialkylammonium hydroxide such as 2-hydroxyethyltrimethylammonium hydroxide (also referred to as choline); and the like.
- At least one basic compound selected from alkali metal hydroxides, quaternary ammonium hydroxides and ammonia can be preferably used.
- alkali metal hydroxides for example, quaternary ammonium hydroxides and ammonia
- tetraalkylammonium hydroxide for example, tetramethylammonium hydroxide
- ammonia is particularly preferable.
- the polishing composition disclosed herein is a chelating agent, an organic acid, an organic acid salt, an inorganic acid, an inorganic acid salt, an antiseptic, an antifungal agent, etc., as long as the effect of the present invention is not significantly hindered.
- a known additive that can be used in a polishing slurry (typically, a polishing slurry used in a polishing process of a silicon wafer) may be further contained as necessary.
- the polishing composition disclosed herein does not substantially contain an oxidizing agent. If the polishing composition contains an oxidizing agent, the supply of the composition may oxidize the surface of the silicon substrate to produce an oxide film, which may reduce the polishing rate. Because.
- that the polishing composition substantially does not contain an oxidant means that at least intentionally no oxidant is blended, and a trace amount of oxidant is inevitably contained due to raw materials and manufacturing methods. It can be tolerated.
- the trace amount means that the molar concentration of the oxidizing agent in the polishing composition is 0.0005 mol / L or less (preferably 0.0001 mol / L or less, more preferably 0.00001 mol / L or less, particularly preferably 0.00.
- the polishing composition according to a preferred embodiment does not contain an oxidizing agent.
- the polishing composition disclosed herein can be preferably implemented in an embodiment that does not contain, for example, hydrogen peroxide, sodium persulfate, ammonium persulfate, and sodium dichloroisocyanurate.
- the pH of the polishing composition disclosed herein is typically 8.0 or higher, preferably 8.5 or higher, more preferably 9.0 or higher, even more preferably 9.3 or higher, for example 9. 5 or more.
- the pH of the polishing composition increases, the polishing efficiency tends to improve.
- the pH of the polishing composition is suitably 12.0 or less, and 11.0 Is preferably 10.8 or less, more preferably 10.8 or less, and even more preferably 10.5 or less.
- a pH meter for example, a glass electrode type hydrogen ion concentration indicator (model number F-23) manufactured by Horiba, Ltd.) is used, and a standard buffer solution (phthalate pH buffer solution: pH 4.01 (25 ° C.)). , Neutral phosphate pH buffer solution pH: 6.86 (25 ° C), carbonate pH buffer solution pH: 10.01 (25 ° C)) It can grasp
- the polishing composition in the technique disclosed herein can be applied to polishing a polishing object having various materials and shapes.
- the material of the polishing object is, for example, a metal or semimetal such as silicon, aluminum, nickel, tungsten, copper, tantalum, titanium, stainless steel, or an alloy thereof; glass such as quartz glass, aluminosilicate glass, glassy carbon, etc.
- a ceramic material such as alumina, silica, sapphire, silicon nitride, tantalum nitride, and titanium carbide; a compound semiconductor substrate material such as silicon carbide, gallium nitride, and gallium arsenide; a resin material such as polyimide resin; Of these, a polishing object composed of a plurality of materials may be used.
- the polishing composition in the technique disclosed herein can be particularly preferably used for polishing a surface made of silicon (typically polishing a silicon wafer).
- a typical example of the silicon wafer here is a silicon single crystal wafer, for example, a silicon single crystal wafer obtained by slicing a silicon single crystal ingot.
- the polishing composition disclosed herein can be preferably applied to a polishing process of an object to be polished (for example, a silicon wafer). Before the polishing process with the polishing composition disclosed herein, the polishing object is subjected to a general treatment that can be applied to the polishing object in a process upstream of the polishing process, such as lapping and etching. May be.
- the polishing composition disclosed herein can be preferably used, for example, in polishing an object to be polished (for example, a silicon wafer) prepared to have a surface roughness of 0.1 nm to 100 nm by an upstream process.
- the surface roughness Ra of the object to be polished can be measured using, for example, a laser scan type surface roughness meter “TMS-3000WRC” manufactured by Schmitt® Measurement® System® Inc.
- TMS-3000WRC laser scan type surface roughness meter
- the final polishing refers to the final polishing step in the manufacturing process of the target product (that is, a step in which no further polishing is performed after that step).
- the polishing composition disclosed herein is typically supplied to a polishing object in the form of a polishing liquid containing the polishing composition, and used for polishing the polishing object.
- the polishing liquid may be prepared, for example, by diluting (typically diluting with water) any of the polishing compositions disclosed herein. Or you may use this polishing composition as polishing liquid as it is. That is, the concept of the polishing composition in the technology disclosed herein is used as a polishing liquid diluted with a polishing liquid (working slurry) that is supplied to a polishing object and used for polishing the polishing object. Both concentrates (ie, stock solutions of polishing liquid) are included.
- Another example of the polishing liquid containing the polishing composition disclosed herein is a polishing liquid obtained by adjusting the pH of the composition.
- the content of the abrasive grains in the polishing liquid is not particularly limited, but is typically 0.01% by weight or more, preferably 0.05% by weight or more, more preferably 0.10% by weight or more, for example, It is 0.15% by weight or more. By increasing the abrasive content, higher polishing rates can be achieved. From the viewpoint of dispersion stability of particles in the polishing composition, the content is usually suitably 10% by weight or less, preferably 7% by weight or less, more preferably 5% by weight or less, and even more preferably 2% by weight. % Or less, for example, 1% by weight or less, and may be 0.7% by weight or less. In a preferred embodiment, the content may be 0.5% by weight or less, or 0.2% by weight or less.
- the concentration of the polyvinyl alcohol polymer in the polishing liquid is not particularly limited and can be, for example, 0.0001% by weight or more. From the viewpoint of haze reduction or the like, the preferred concentration is 0.0005% by weight or more, more preferably 0.001% by weight or more, for example 0.003% by weight or more, and may be 0.005% by weight or more. . From the viewpoint of polishing rate and the like, the concentration of the polyvinyl alcohol-based polymer is usually preferably 0.2% by weight or less, more preferably 0.1% by weight or less, and 0.05% by weight or less. (For example, 0.01% by weight or less) or 0.008% by weight or less may be used.
- the concentration of the dispersant in the polishing liquid is not particularly limited, and can be, for example, 0.0001% by weight or more, preferably 0.0003% by weight or more. Further, the concentration of the dispersant in the polishing liquid is usually preferably 0.2% by weight or less, more preferably 0.1% by weight or less, and may be 0.05% by weight or less. In a preferred embodiment, the concentration of the dispersant in the polishing liquid may be 0.0001 wt% or more and 0.002 wt% or less, or 0.0002 wt% or more and 0.001 wt% or less. In another preferred embodiment, the concentration of the dispersant in the polishing liquid may be 0.005 wt% or more and 0.03% wt or less.
- the concentration of the basic compound in the polishing liquid is not particularly limited. From the viewpoint of improving the polishing rate, the concentration is usually preferably 0.001% by weight or more of the polishing liquid, and more preferably 0.003% by weight or more (eg, 0.005% by weight or more). . From the viewpoint of haze reduction or the like, the concentration is suitably less than 0.3% by weight, preferably less than 0.1% by weight, and less than 0.05% by weight (for example, 0.03%). More preferably, it is less than% by weight.
- the polishing composition disclosed herein is in a concentrated form before being supplied to the object to be polished (that is, it is in the form of a concentrated concentrate of the polishing liquid and can also be grasped as a stock solution of the polishing liquid). There may be.
- the polishing composition in such a concentrated form is advantageous from the viewpoints of convenience, cost reduction, etc. during production, distribution, storage and the like.
- the concentration ratio is not particularly limited, and can be, for example, about 2 to 100 times in terms of volume, and usually about 5 to 50 times (for example, about 10 to 40 times) is appropriate.
- Such a concentrated liquid can be used in such a manner that a polishing liquid (working slurry) is prepared by diluting at a desired timing and the polishing liquid is supplied to an object to be polished.
- the dilution can be performed, for example, by adding water to the concentrated solution and mixing.
- the content of abrasive grains in the concentrated liquid can be, for example, 50% by weight or less.
- the abrasive grain content in the concentrated liquid is preferably 45% by weight or less, more preferably 40% by weight. It is as follows.
- the content of abrasive grains can be, for example, 0.5% by weight or more, preferably 1% by weight or more, and more preferably Is 3% by weight or more.
- the polishing composition used in the technology disclosed herein may be a one-part type or a multi-part type including a two-part type.
- Part A containing at least abrasive grains and Part B containing at least a part of the remaining components are mixed, and these are mixed and diluted at an appropriate timing as necessary.
- the polishing liquid may be prepared.
- the method for preparing the polishing composition is not particularly limited. For example, it is good to mix each component which comprises polishing composition using well-known mixing apparatuses, such as a wing-type stirrer, an ultrasonic disperser, a homomixer.
- mixing apparatuses such as a wing-type stirrer, an ultrasonic disperser, a homomixer.
- the aspect which mixes these components is not specifically limited, For example, all the components may be mixed at once and may be mixed in the order set suitably.
- the polishing composition disclosed herein can be used for polishing a polishing object, for example, in an embodiment including the following operations.
- a preferred embodiment of a method for polishing an object to be polished (for example, a silicon wafer) using the polishing composition disclosed herein will be described. That is, a polishing liquid containing any of the polishing compositions disclosed herein is prepared.
- Preparing the polishing liquid may include preparing the polishing liquid by adding operations such as concentration adjustment (for example, dilution) and pH adjustment to the polishing composition. Or you may use polishing composition as polishing liquid as it is.
- the polishing liquid is supplied to the object to be polished and polished by a conventional method.
- a silicon wafer that has undergone a lapping process is set in a general polishing apparatus, and a polishing liquid is applied to the surface to be polished of the silicon wafer through a polishing pad of the polishing apparatus.
- Supply typically, while continuously supplying the polishing liquid, the polishing pad is pressed against the surface to be polished of the silicon wafer to move both relatively (for example, rotational movement). The polishing of the object to be polished is completed through this polishing step.
- the polishing pad used in the polishing step is not particularly limited.
- a polishing pad of foamed polyurethane type, non-woven fabric type, suede type or the like can be used.
- Each polishing pad may include abrasive grains or may not include abrasive grains.
- a polishing pad not containing abrasive grains is preferably used.
- An object to be polished polished using the polishing composition disclosed herein is typically cleaned.
- the washing can be performed using an appropriate washing solution.
- the cleaning solution to be used is not particularly limited.
- an SC-1 cleaning solution ammonium hydroxide (NH 4 OH), hydrogen peroxide (H 2 O 2 ), water (H 2 O), etc.
- SC-2 cleaning liquid mixed liquid of HCl, H 2 O 2 and H 2 O), etc.
- the temperature of the cleaning liquid can be, for example, in the range of room temperature (typically about 15 ° C. to 25 ° C.) or more and about 90 ° C. From the viewpoint of improving the cleaning effect, a cleaning solution of about 50 ° C. to 85 ° C. can be preferably used.
- Example 1A Polyvinyl alcohol (PVA), a dispersant, and water were mixed to prepare an aqueous solution containing 0.11% of PVA and the balance being water, and used as a test solution according to Example 1A.
- PVA polyvinyl alcohol
- dispersant polyoxyethylene octyl ether (hereinafter also referred to as “C8PEO6”) having an ethylene oxide addition mole number of 6 was used.
- Example 2A In place of C8PEO6, an aqueous solution containing the same components as in Example 1A at the same concentration except that polyacryloylmorpholine (PACMO) having a Mw of 39 ⁇ 10 4 was used as a dispersant was prepared in Example 2A. This test solution was used.
- PACMO polyacryloylmorpholine
- Example 3A A test solution of Example 3A was prepared in the same manner as in Example 1A, except that hydroxyethyl cellulose (HEC) having an Mw of 26 ⁇ 10 4 was used as the dispersant instead of C8PEO6.
- the concentration of PVA in the test solution according to Example 3A was 0.10%.
- Example 4A An aqueous solution containing the same components as used in Example 3A at the same concentration except that no dispersant was used was prepared as a test solution according to Example 4A.
- Example 5A A test solution of Example 5A was prepared in the same manner as Example 1A except that polyvinylpyrrolidone (PVP) having a Mw of 1.7 ⁇ 10 4 was used instead of C8PEO6.
- the concentration of PVA in the test solution according to Example 5A was 0.10%, and the concentration of PVP was 0.05%.
- Example 6A Except not using PVA, the aqueous solution which contains the same component used by Example 5A by the same density
- Example 1A The molar ratio of the content of PVA to the content of the dispersant having an ether bond in each test solution of Example 1A to Example 3A was as indicated in the corresponding column of Table 1.
- each test solution of Examples 1A to 6A was collected, put into a container with a lid of 80 ml capacity, and shaken at a shaking strength of 300 spm in an environment of 23 ° C. While the container was shaken, the presence or absence of precipitates in the container was visually confirmed every 12 hours.
- the dispersion stability of each test solution was good ( ⁇ ) when no precipitate was formed even after shaking for 72 hours or more in the shaking test under the above test conditions, and was precipitated by shaking for 24 hours or more and less than 72 hours. Evaluation was made in three stages, where a product was acceptable ( ⁇ ), and a product with precipitates formed by shaking for less than 24 hours was regarded as defective (x). The evaluation results are shown in the column of dispersion stability in Table 1.
- Example 1A to 3A containing a dispersant having an ether bond in the molecule were compared with the test solutions of Examples 4A to 5A containing no dispersant. Dispersion stability was obviously improved. Moreover, since the test solution of Example 6A not containing PVA showed good dispersion stability, it was suggested that a factor that impairs the dispersion stability of the test solution is derived from aggregation of PVA. Similarly, the test solution prepared in the same manner except that the PVA used in the test solution of Example 4A was replaced with PVA having a molecular weight of 1.1 ⁇ 10 4 and a saponification degree of 98% or more.
- Pre-polishing process A pre-polishing composition containing 0.9% abrasive grains and 0.1% basic compound with the balance being water was prepared. As abrasive grains, colloidal silica having a BET diameter of 35 nm was used. Potassium hydroxide (KOH) was used as the basic compound. This pre-polishing composition was used as it was as a polishing liquid (working slurry), and a silicon wafer as an object to be polished was polished under the pre-polishing conditions described below.
- KOH Potassium hydroxide
- a commercially available silicon single crystal wafer having a diameter of 300 mm and finished lapping and etching (conduction type: P type, crystal orientation: ⁇ 100>, resistivity: 1 ⁇ ⁇ cm or more and less than 100 ⁇ ⁇ cm, COP free) is used. did.
- Polishing device Single wafer polishing machine manufactured by Okamoto Machine Tool Co., Ltd. Model “PNX-332B” Polishing load: 20 kPa Plate rotation speed: 20 rpm Carrier rotation speed: 20rpm Polishing pad: Product name “FP55”, manufactured by Fujibo Atago Co., Ltd. Polishing liquid supply rate: 1 liter / min Polishing liquid temperature: 20 ° C. Surface plate cooling water temperature: 20 ° C Polishing time: 2 minutes
- Example 1B A polishing composition containing abrasive grains, polyvinyl alcohol (PVA), a dispersant, and a basic compound, with the balance being water, was prepared and used as the polishing composition according to Example 1B.
- PVA polyvinyl alcohol
- a dispersant polyoxyethylene octyl ether (C8PEO6) having an ethylene oxide addition mole number of 6 was used. Ammonia was used as the basic compound.
- the concentration of each component in the polishing composition according to Example 1B was 3.3% for abrasive grains, 0.11% for PVA, and 0.21% for basic compounds.
- DIW deionized water
- Polishing device Single wafer polishing machine manufactured by Okamoto Machine Tool Co., Ltd. Model “PNX-332B” Polishing load: 15 kPa Plate rotation speed: 30 rpm Carrier rotation speed: 30rpm Polishing pad: Polishing pad manufactured by Fujibo Atago Co., Ltd., trade name “POLYPAS27NX” Polishing liquid supply rate: 2 l / min Polishing liquid temperature: 20 ° C. Surface plate cooling water temperature: 20 ° C Polishing time: 4 minutes
- DIW deionized water
- SC-1 wash More specifically, a cleaning tank equipped with an ultrasonic oscillator having a frequency of 720 kHz is prepared, the cleaning liquid is stored in the cleaning tank and held at 70 ° C., and the polished silicon wafer is immersed in the cleaning tank for 6 minutes, After that, rinsing with ultrapure water was performed. After repeating this process twice, the silicon wafer was dried.
- Example 2B A polishing composition of Example 2B was prepared so as to contain the same components as in Example 1B at the same concentration except that PACMO having an Mw of 39 ⁇ 10 4 was used as a dispersant instead of C8PEO6. Except for using this polishing composition, the silicon wafer that had undergone the previous polishing step was subjected to final polishing, washing, and drying in the same manner as in Example 1B.
- Example 3B The polishing composition of Example 3B was prepared in the same manner as Example 1B, except that HEC having an Mw of 26 ⁇ 10 4 was used as the dispersant instead of C8PEO6.
- the concentration of each component in the polishing composition according to Example 3B was 3.3% for abrasive grains, 0.10% for PVA, and 0.23% for basic compounds. Except for using this polishing composition, the silicon wafer that had undergone the previous polishing step was subjected to final polishing, washing, and drying in the same manner as in Example 1B.
- Example 4B A polishing composition of Example 4B was prepared in the same manner as in Example 1B, except that the dispersant was not used.
- the concentration of each component in the polishing composition according to Example 4B was 3.3% for abrasive grains, 0.10% for PVA, and 0.21% for basic compounds. Except for using this polishing composition, the silicon wafer that had undergone the previous polishing step was subjected to final polishing, washing, and drying in the same manner as in Example 1B.
- Example 5B The polishing composition of Example 5B was prepared in the same manner as Example 1B, except that PVP having Mw of 1.7 ⁇ 10 4 was used instead of C8PEO6.
- the concentration of each component in the polishing composition according to Example 5B was 3.3% for abrasive grains, 0.10% for PVA, 0.05% for PVP, and 0.21% for basic compounds. Except for using this polishing composition, the silicon wafer that had undergone the previous polishing step was subjected to final polishing, washing, and drying in the same manner as in Example 1B.
- Example 6B A polishing composition of Example 6B was prepared so as to contain the same components as in Example 5B at the same concentration except that PVA was not used. Except for using this polishing composition, the silicon wafer that had undergone the previous polishing step was subjected to final polishing, washing, and drying in the same manner as in Example 1B.
- the polishing compositions of Examples 1B to 3B containing PVA and a dispersant having an ether bond in the molecule As shown in Table 2, according to the polishing compositions of Examples 1B to 3B containing PVA and a dispersant having an ether bond in the molecule, the polishing compositions of Examples 4B to 5B containing no dispersant Compared with the composition, the number of LPDs was clearly reduced, and surface defects on the polished surface were reduced. In particular, according to the polishing composition of Example 1B using C8PEO6 as a dispersant, surface defects were significantly reduced.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Abstract
L'invention concerne une composition de polissage qui, bien qu'elle comprenne un polymère à base d'alcool polyvinylique, a supprimé l'agrégation du polymère à base d'alcool polyvinylique dans la composition et peut réduire efficacement les défauts de surface. Cette composition de polissage comprend des grains abrasifs et de l'eau. La composition de polissage comprend également le polymère à base d'alcool polyvinylique et un dispersant pour le polymère à base d'alcool polyvinylique. Le dispersant comprend une liaison éther dans ses molécules. Le rapport molaire de la teneur en polymère à base d'alcool polyvinylique par rapport au contenu de dispersant est de 0,01-10.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020510492A JP7450532B2 (ja) | 2018-03-30 | 2019-03-01 | 研磨用組成物 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018-069647 | 2018-03-30 | ||
JP2018069647 | 2018-03-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019187969A1 true WO2019187969A1 (fr) | 2019-10-03 |
Family
ID=68061523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2019/008022 WO2019187969A1 (fr) | 2018-03-30 | 2019-03-01 | Composition de polissage |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP7450532B2 (fr) |
TW (1) | TWI829675B (fr) |
WO (1) | WO2019187969A1 (fr) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013176122A1 (fr) * | 2012-05-25 | 2013-11-28 | 日産化学工業株式会社 | Composition de solution de polissage pour des tranches |
WO2014129408A1 (fr) * | 2013-02-21 | 2014-08-28 | 株式会社フジミインコーポレーテッド | Composition de polissage et procédé de fabrication d'article poli |
WO2015046164A1 (fr) * | 2013-09-30 | 2015-04-02 | 株式会社フジミインコーポレーテッド | Composition de polissage et son procédé de production correspondant |
JP2016056220A (ja) * | 2014-09-05 | 2016-04-21 | 日本キャボット・マイクロエレクトロニクス株式会社 | スラリー組成物、リンス組成物、基板研磨方法およびリンス方法 |
WO2017150158A1 (fr) * | 2016-03-01 | 2017-09-08 | 株式会社フジミインコーポレーテッド | Procédé de polissage de substrat de silicium, et ensemble de composition pour polissage |
WO2017150118A1 (fr) * | 2016-02-29 | 2017-09-08 | 株式会社フジミインコーポレーテッド | Composition pour polissage, et procédé de polissage mettant en œuvre celle-ci |
WO2018025655A1 (fr) * | 2016-08-02 | 2018-02-08 | 株式会社フジミインコーポレーテッド | Concentré de composition pour meulage de dégrossissage de tranche de silicium |
WO2018043504A1 (fr) * | 2016-08-31 | 2018-03-08 | 株式会社フジミインコーポレーテッド | Composition de polissage et ensemble de composition de polissage |
WO2018096991A1 (fr) * | 2016-11-22 | 2018-05-31 | 株式会社フジミインコーポレーテッド | Composition de polissage |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6280688B2 (ja) | 2012-10-12 | 2018-02-14 | 株式会社フジミインコーポレーテッド | 研磨用組成物の製造方法及び研磨用組成物 |
JP6343160B2 (ja) * | 2014-03-28 | 2018-06-13 | 株式会社フジミインコーポレーテッド | 研磨用組成物 |
EP3258483A4 (fr) | 2015-02-12 | 2018-02-28 | Fujimi Incorporated | Procédé de polissage de plaquette de silicium et composition de traitement de surface |
-
2019
- 2019-03-01 WO PCT/JP2019/008022 patent/WO2019187969A1/fr active Application Filing
- 2019-03-01 JP JP2020510492A patent/JP7450532B2/ja active Active
- 2019-03-15 TW TW108108855A patent/TWI829675B/zh active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013176122A1 (fr) * | 2012-05-25 | 2013-11-28 | 日産化学工業株式会社 | Composition de solution de polissage pour des tranches |
WO2014129408A1 (fr) * | 2013-02-21 | 2014-08-28 | 株式会社フジミインコーポレーテッド | Composition de polissage et procédé de fabrication d'article poli |
WO2015046164A1 (fr) * | 2013-09-30 | 2015-04-02 | 株式会社フジミインコーポレーテッド | Composition de polissage et son procédé de production correspondant |
JP2016056220A (ja) * | 2014-09-05 | 2016-04-21 | 日本キャボット・マイクロエレクトロニクス株式会社 | スラリー組成物、リンス組成物、基板研磨方法およびリンス方法 |
WO2017150118A1 (fr) * | 2016-02-29 | 2017-09-08 | 株式会社フジミインコーポレーテッド | Composition pour polissage, et procédé de polissage mettant en œuvre celle-ci |
WO2017150158A1 (fr) * | 2016-03-01 | 2017-09-08 | 株式会社フジミインコーポレーテッド | Procédé de polissage de substrat de silicium, et ensemble de composition pour polissage |
WO2018025655A1 (fr) * | 2016-08-02 | 2018-02-08 | 株式会社フジミインコーポレーテッド | Concentré de composition pour meulage de dégrossissage de tranche de silicium |
WO2018043504A1 (fr) * | 2016-08-31 | 2018-03-08 | 株式会社フジミインコーポレーテッド | Composition de polissage et ensemble de composition de polissage |
WO2018096991A1 (fr) * | 2016-11-22 | 2018-05-31 | 株式会社フジミインコーポレーテッド | Composition de polissage |
Also Published As
Publication number | Publication date |
---|---|
TWI829675B (zh) | 2024-01-21 |
TW201942274A (zh) | 2019-11-01 |
JPWO2019187969A1 (ja) | 2021-04-30 |
JP7450532B2 (ja) | 2024-03-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7148506B2 (ja) | 研磨用組成物およびこれを用いた研磨方法 | |
WO2014129408A1 (fr) | Composition de polissage et procédé de fabrication d'article poli | |
CN106663619B (zh) | 硅晶圆研磨用组合物 | |
JP7353051B2 (ja) | シリコンウェーハ研磨用組成物 | |
WO2021182155A1 (fr) | Composition de polissage et procédé de polissage | |
TWI832999B (zh) | 研磨用組成物 | |
JP6691774B2 (ja) | 研磨用組成物およびその製造方法 | |
WO2018150945A1 (fr) | Composition de polissage intermédiaire de substrat de silicium et ensemble de composition de polissage de substrat de silicium | |
JP7103823B2 (ja) | シリコンウェーハの研磨方法および研磨用組成物 | |
KR101732331B1 (ko) | 실리콘 웨이퍼 연마용 조성물 | |
WO2020196370A1 (fr) | Composition de polissage | |
JP7061965B2 (ja) | 研磨用組成物 | |
CN113631679B (zh) | 研磨用组合物 | |
WO2022070801A1 (fr) | Composition de meulage et son utilisation | |
WO2019187969A1 (fr) | Composition de polissage | |
WO2021199723A1 (fr) | Composition de polissage | |
WO2021182278A1 (fr) | Composition de polissage et procédé de polissage | |
WO2023181928A1 (fr) | Composition de polissage | |
WO2023063027A1 (fr) | Composition de polissage | |
WO2023181929A1 (fr) | Composition de polissage | |
WO2022113986A1 (fr) | Composition de polissage pour tranches de silicium et son utilisation | |
CN111040731A (zh) | 硅晶圆研磨用组合物 | |
WO2024070831A1 (fr) | Composition pour polissage | |
WO2021182277A1 (fr) | Composition de polissage et procédé de polissage |
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: 19776441 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2020510492 Country of ref document: JP Kind code of ref document: A |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 19776441 Country of ref document: EP Kind code of ref document: A1 |