KR20040029239A - 텅스텐 금속막 연마용 화학-기계적 연마 슬러리 조성물 - Google Patents
텅스텐 금속막 연마용 화학-기계적 연마 슬러리 조성물 Download PDFInfo
- Publication number
- KR20040029239A KR20040029239A KR1020020058207A KR20020058207A KR20040029239A KR 20040029239 A KR20040029239 A KR 20040029239A KR 1020020058207 A KR1020020058207 A KR 1020020058207A KR 20020058207 A KR20020058207 A KR 20020058207A KR 20040029239 A KR20040029239 A KR 20040029239A
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- KR
- South Korea
- Prior art keywords
- acid
- slurry composition
- chemical
- mechanical polishing
- tungsten
- Prior art date
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- 238000005498 polishing Methods 0.000 title claims abstract description 120
- 239000002002 slurry Substances 0.000 title claims abstract description 79
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 239000010937 tungsten Substances 0.000 title claims abstract description 78
- 229910052721 tungsten Inorganic materials 0.000 title claims abstract description 77
- 239000000203 mixture Substances 0.000 title claims abstract description 69
- 239000000126 substance Substances 0.000 title claims 2
- 229910052751 metal Inorganic materials 0.000 title description 34
- 239000002184 metal Substances 0.000 title description 34
- 239000006185 dispersion Substances 0.000 claims abstract description 28
- 239000003381 stabilizer Substances 0.000 claims abstract description 20
- 239000007800 oxidant agent Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 40
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 35
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 32
- ATHHXGZTWNVVOU-UHFFFAOYSA-N N-methylformamide Chemical compound CNC=O ATHHXGZTWNVVOU-UHFFFAOYSA-N 0.000 claims description 22
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 21
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 claims description 18
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical group CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 18
- 229910021485 fumed silica Inorganic materials 0.000 claims description 17
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 15
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 12
- CCIVGXIOQKPBKL-UHFFFAOYSA-M ethanesulfonate Chemical compound CCS([O-])(=O)=O CCIVGXIOQKPBKL-UHFFFAOYSA-M 0.000 claims description 9
- 239000004310 lactic acid Substances 0.000 claims description 9
- 235000014655 lactic acid Nutrition 0.000 claims description 9
- 239000003623 enhancer Substances 0.000 claims description 7
- 230000001590 oxidative effect Effects 0.000 claims description 7
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 6
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 6
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 claims description 6
- 239000003112 inhibitor Substances 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 claims description 4
- 235000015165 citric acid Nutrition 0.000 claims description 4
- 235000006408 oxalic acid Nutrition 0.000 claims description 4
- 239000005711 Benzoic acid Substances 0.000 claims description 3
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 3
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 3
- 235000010233 benzoic acid Nutrition 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 3
- 235000004515 gallic acid Nutrition 0.000 claims description 3
- 229940074391 gallic acid Drugs 0.000 claims description 3
- DUWWHGPELOTTOE-UHFFFAOYSA-N n-(5-chloro-2,4-dimethoxyphenyl)-3-oxobutanamide Chemical compound COC1=CC(OC)=C(NC(=O)CC(C)=O)C=C1Cl DUWWHGPELOTTOE-UHFFFAOYSA-N 0.000 claims description 3
- 235000019260 propionic acid Nutrition 0.000 claims description 3
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 3
- 239000011975 tartaric acid Substances 0.000 claims description 3
- 235000002906 tartaric acid Nutrition 0.000 claims description 3
- BEQKKZICTDFVMG-UHFFFAOYSA-N 1,2,3,4,6-pentaoxepane-5,7-dione Chemical compound O=C1OOOOC(=O)O1 BEQKKZICTDFVMG-UHFFFAOYSA-N 0.000 claims description 2
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 claims description 2
- TVAJJUOMNRUGQA-UHFFFAOYSA-N 2-butoxyethyl dihydrogen phosphate Chemical compound CCCCOCCOP(O)(O)=O TVAJJUOMNRUGQA-UHFFFAOYSA-N 0.000 claims description 2
- 239000004254 Ammonium phosphate Substances 0.000 claims description 2
- PHZRCSXMDBFJDE-UHFFFAOYSA-N CNC=O.N1N=NC2=C1C=CC=C2 Chemical compound CNC=O.N1N=NC2=C1C=CC=C2 PHZRCSXMDBFJDE-UHFFFAOYSA-N 0.000 claims description 2
- PDAVOLCVHOKLEO-UHFFFAOYSA-N acetyl benzenecarboperoxoate Chemical compound CC(=O)OOC(=O)C1=CC=CC=C1 PDAVOLCVHOKLEO-UHFFFAOYSA-N 0.000 claims description 2
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims description 2
- 235000019289 ammonium phosphates Nutrition 0.000 claims description 2
- SRSXLGNVWSONIS-UHFFFAOYSA-N benzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 claims description 2
- 229940092714 benzenesulfonic acid Drugs 0.000 claims description 2
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 2
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 2
- 239000008119 colloidal silica Substances 0.000 claims description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 2
- XPPKVPWEQAFLFU-UHFFFAOYSA-N diphosphoric acid Chemical compound OP(O)(=O)OP(O)(O)=O XPPKVPWEQAFLFU-UHFFFAOYSA-N 0.000 claims description 2
- CCIVGXIOQKPBKL-UHFFFAOYSA-N ethanesulfonic acid Chemical compound CCS(O)(=O)=O CCIVGXIOQKPBKL-UHFFFAOYSA-N 0.000 claims description 2
- PCIBVZXUNDZWRL-UHFFFAOYSA-N ethylene glycol monophosphate Chemical compound OCCOP(O)(O)=O PCIBVZXUNDZWRL-UHFFFAOYSA-N 0.000 claims description 2
- 229940098779 methanesulfonic acid Drugs 0.000 claims description 2
- ACZVWYLTJHGUCP-UHFFFAOYSA-N n-(2,2,2-trichloro-1-hydroxyethyl)formamide Chemical compound ClC(Cl)(Cl)C(O)NC=O ACZVWYLTJHGUCP-UHFFFAOYSA-N 0.000 claims description 2
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 claims description 2
- SRSFOMHQIATOFV-UHFFFAOYSA-N octanoyl octaneperoxoate Chemical compound CCCCCCCC(=O)OOC(=O)CCCCCCC SRSFOMHQIATOFV-UHFFFAOYSA-N 0.000 claims description 2
- 229940005657 pyrophosphoric acid Drugs 0.000 claims description 2
- KRURGYOKPVLRHQ-UHFFFAOYSA-N trithionic acid Chemical compound OS(=O)(=O)SS(O)(=O)=O KRURGYOKPVLRHQ-UHFFFAOYSA-N 0.000 claims description 2
- 125000000542 sulfonic acid group Chemical group 0.000 claims 2
- 239000002253 acid Substances 0.000 claims 1
- VERZAHGVEDNDSE-UHFFFAOYSA-N butyl phosphono hydrogen phosphate Chemical compound CCCCOP(O)(=O)OP(O)(O)=O VERZAHGVEDNDSE-UHFFFAOYSA-N 0.000 claims 1
- 239000001384 succinic acid Substances 0.000 claims 1
- CYFLXLSBHQBMFT-UHFFFAOYSA-N sulfamoxole Chemical group O1C(C)=C(C)N=C1NS(=O)(=O)C1=CC=C(N)C=C1 CYFLXLSBHQBMFT-UHFFFAOYSA-N 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 25
- 239000002245 particle Substances 0.000 description 18
- 239000007788 liquid Substances 0.000 description 9
- 239000011229 interlayer Substances 0.000 description 8
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 7
- 150000007524 organic acids Chemical class 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- -1 etc. may be used Chemical compound 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000003002 pH adjusting agent Substances 0.000 description 3
- 238000007517 polishing process Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- BFYHFSGFMZUISQ-UHFFFAOYSA-N dibutyl dibutoxyphosphoryl phosphate Chemical compound CCCCOP(=O)(OCCCC)OP(=O)(OCCCC)OCCCC BFYHFSGFMZUISQ-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 238000000733 zeta-potential measurement Methods 0.000 description 1
Classifications
-
- 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
- C09K3/1454—Abrasive powders, suspensions and pastes for polishing
- C09K3/1463—Aqueous liquid suspensions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/32115—Planarisation
- H01L21/3212—Planarisation by chemical mechanical polishing [CMP]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/7684—Smoothing; Planarisation
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Abstract
Description
에탄술폰산 (wt%) | 텅스텐 연마속도 (Å/min) | |
비교예 1 | 0 | 987 |
실시예 1 | 0.05 | 1524 |
실시예 2 | 0.1 | 2189 |
실시예 3 | 0.3 | 2489 |
실시예 4 | 0.5 | 2458 |
실시예 5 | 1.0 | 2387 |
실시예 6 | 5.0 | 1207 |
메틸포름아미드 (wt%) | 텅스텐 연마속도 (Å/min) | |
비교예 2 | 0 | 975 |
실시예 7 | 0.05 | 1390 |
실시예 8 | 0.1 | 2358 |
실시예 9 | 0.3 | 2681 |
실시예 10 | 0.5 | 2275 |
실시예 11 | 1.0 | 2387 |
실시예 12 | 5.0 | 1432 |
락틱산 (wt%) | 텅스텐 연마속도(Å/min) | 실리콘 산화막연마속도(Å/min) | 텅스텐/실리콘 산화막 선택비 | |
비교예 3 | 0 | 2654 | 156 | 17:1 |
실시예 13 | 0.05 | 2586 | 143 | 18:1 |
실시예 14 | 0.1 | 2589 | 127 | 20:1 |
실시예 15 | 0.2 | 2614 | 47 | 56:1 |
실시예 16 | 0.5 | 2628 | 49 | 54:1 |
실시예 17 | 5.0 | 1412 | 51 | 28:1 |
비교예 4 | HF 0.2% | 2541 | 117 | 22:1 |
시료 | 인산(wt%) | 침전(15일 후) | 제타 전위(mV) | 평균입도(초기, nm) | 평균입도(15일 후, nm) |
비교예 5 | 0 | 침전 | -3 | 234 | 측정불가(과량 응집) |
실시예 18 | 0.05 | 없음 | -10 | 211 | 254 |
실시예 19 | 0.12 | 없음 | -14 | 204 | 212 |
실시예 20 | 0.5 | 없음 | -15 | 203 | 213 |
실시예 21 | 1.0 | 없음 | -14 | 201 | 213 |
실시예 22 | 3.0 | 침전 | -6 | 205 | 측정불가(과량 응집) |
시료 | 안정제 | 과산화수소 함량 (wt%) | 평균 분해속도(wt%/day) | |||||
0 | 1일 후 | 2일 후 | 5일 후 | 10일 후 | 15일 후 | |||
실시예 23 | 인산 0.5wt% | 2.00 | 1.98 | 1.96 | 1.90 | 1.81 | 1.69 | -0.02 |
실시예 24 | 인산 0.12wt% | 2.00 | 1.98 | 1.95 | 1.89 | 1.79 | 1.71 | -0.02 |
비교예 6 | Urea 0.12wt% | 2.00 | 1.93 | 1.88 | 1.71 | 1.41 | 1.19 | -0.06 |
비교예 7 | Acetanilide0.12wt% | 2.00 | 1.93 | 1.85 | 1.65 | 1.29 | 0.95 | -0.07 |
비교예 8 | 없음 | 2.00 | 1.89 | 1.81 | 1.51 | 0.99 | 0.51 | -0.10 |
Claims (14)
- 연마제, 산화제, 텅스텐 연마 향상제, 분산안정제 및 물을 포함하며, pH가 2 내지 9인 화학-기계적 연마 슬러리 조성물.
- 제1항에 있어서, 전체 슬러리 조성물에 대하여 상기 연마제의 함량은 0.1 내지 20.0중량%이고, 산화제의 함량은 0.1 내지 10.0중량%이고, 텅스텐 연마 향상제의 함량은 0.001 내지 5.0중량%이고, 분산안정제의 함량은 0.001 내지 1.0중량%인 화학-기계적 연마 슬러리 조성물.
- 제1항에 있어서, 전체 슬러리 조성물에 대하여 0.001 내지 5.0중량%의 실리콘 산화막 연마 억제제를 더욱 포함하는 것을 특징으로 하는 화학-기계적 연마 슬러리 조성물.
- 제1항에 있어서, 상기 연마제는 γ-알루미나, α-알루미나, 퓸드 실리카, 콜로이달 실리카, 세리아 및 이들의 혼합물로 이루어진 군으로부터 선택되는 것을 특징으로 하는 화학-기계적 연마 슬러리 조성물.
- 제4항에 있어서, 상기 연마제는 비표면적이 50 내지 300m2/g인 퓸드 실리카인것을 특징으로 하는 화학-기계적 연마 슬러리 조성물.
- 제1항에 있어서, 상기 산화제는 과산화수소, 퍼옥시디카보네이트, 옥타노일 퍼옥사이드, 아세틸벤조일 퍼옥사이드 및 이들의 혼합물로 이루어진 군으로부터 선택되는 화합물인 것을 특징으로 하는 화학-기계적 연마 슬러리 조성물.
- 제6항에 있어서, 상기 산화제는 과산화수소인 것을 특징으로 하는 화학-기계적 연마 슬러리 조성물.
- 제1항에 있어서, 상기 텅스텐 연마 향상제는 술폰산, 포름아미드 및 이들의 혼합물로 이루어진 군으로부터 선택되는 것을 특징으로 하는 화학-기계적 연마 슬러리 조성물.
- 제8항에 있어서, 상기 텅스텐 연마 향상제는 술폰산, 에탄술폰산, 메탄술폰산, 톨루엔술폰산, 에틸술폰산, 술판디술폰산, 술판모노술폰산, 나프탈렌술폰산, 벤젠술폰산, 포름아미드, 메틸포름아미드, 디메틸포름아미드, 클로랄포름아미드, 벤조트리아졸 메틸포름아미드 및 이들의 혼합물로 이루어진 군으로부터 선택되는 것을 특징으로 하는 화학-기계적 연마 슬러리 조성물.
- 제9항에 있어서, 상기 텅스텐 연마 향상제는 에탄술폰산, 메틸포름아미드 및이들의 혼합물로 이루어진 군으로부터 선택되는 것을 특징으로 하는 화학-기계적 연마 슬러리 조성물.
- 제1항에 있어, 상기 분산안정제는 인산, 암모늄포스페이트, 피로인산, 에틸렌글리콜 포스페이트, 부틸옥시에틸 포스페이트, n-부틸피로포스페이트 및 이들의 혼합물로 이루어진 군으로부터 선택되는 화합물인 것을 특징으로 하는 화학-기계적 연마 슬러리 조성물.
- 제11항에 있어서, 상기 분산안정제는 인산인 것을 특징으로 하는 화학-기계적 연마 슬러리 조성물.
- 제3항에 있어서, 상기 실리콘 산화막 연마 억제제는 락틱산, 타르타르산, 시트르산, 옥살산, 벤조산, 갈릭산, 프로판산, 말론산, 숙살산 및 이들의 혼합물로 이루어진 군으로부터 선택되는 것을 특징으로 하는 화학-기계적 연마 슬러리 조성물.
- 제13항에 있어서, 상기 실리콘 산화막 연마 억제제는 락틱산인 것을 특징으로 하는 화학-기계적 연마 슬러리 조성물.
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Cited By (5)
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KR100498814B1 (ko) * | 2002-10-18 | 2005-07-01 | 주식회사 동진쎄미켐 | 텅스텐 막에 대한 연마 속도가 우수하고 안정성이 뛰어난화학-기계적 연마 슬러리 조성물 |
KR100498816B1 (ko) * | 2002-10-18 | 2005-07-01 | 주식회사 동진쎄미켐 | 분산 안정성이 우수한 텅스텐 금속막 연마용 화학-기계적연마 슬러리 조성물 |
KR20170061643A (ko) * | 2017-05-16 | 2017-06-05 | 주식회사 케이씨텍 | 텅스텐 연마용 슬러리 조성물 |
KR20190072236A (ko) * | 2017-12-15 | 2019-06-25 | 주식회사 케이씨텍 | 텅스텐 연마용 cmp 슬러리 조성물 |
WO2021086015A1 (ko) * | 2019-11-01 | 2021-05-06 | 삼성에스디아이 주식회사 | 텅스텐 패턴 웨이퍼 연마용 cmp 슬러리 조성물 및 이를 이용한 텅스텐 패턴웨이퍼 연마 방법 |
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KR100894985B1 (ko) | 2007-06-29 | 2009-04-24 | 삼성전자주식회사 | 금속 연마용 슬러리 조성물, 이를 이용한 금속 대상체의연마 방법 및 금속 배선의 형성 방법 |
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US5958288A (en) * | 1996-11-26 | 1999-09-28 | Cabot Corporation | Composition and slurry useful for metal CMP |
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KR100498814B1 (ko) * | 2002-10-18 | 2005-07-01 | 주식회사 동진쎄미켐 | 텅스텐 막에 대한 연마 속도가 우수하고 안정성이 뛰어난화학-기계적 연마 슬러리 조성물 |
KR100498816B1 (ko) * | 2002-10-18 | 2005-07-01 | 주식회사 동진쎄미켐 | 분산 안정성이 우수한 텅스텐 금속막 연마용 화학-기계적연마 슬러리 조성물 |
KR20170061643A (ko) * | 2017-05-16 | 2017-06-05 | 주식회사 케이씨텍 | 텅스텐 연마용 슬러리 조성물 |
KR20190072236A (ko) * | 2017-12-15 | 2019-06-25 | 주식회사 케이씨텍 | 텅스텐 연마용 cmp 슬러리 조성물 |
WO2021086015A1 (ko) * | 2019-11-01 | 2021-05-06 | 삼성에스디아이 주식회사 | 텅스텐 패턴 웨이퍼 연마용 cmp 슬러리 조성물 및 이를 이용한 텅스텐 패턴웨이퍼 연마 방법 |
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