KR20010041962A - 구리 기판에 유용한 화학 기계적 연마용 슬러리 - Google Patents
구리 기판에 유용한 화학 기계적 연마용 슬러리 Download PDFInfo
- Publication number
- KR20010041962A KR20010041962A KR1020007010286A KR20007010286A KR20010041962A KR 20010041962 A KR20010041962 A KR 20010041962A KR 1020007010286 A KR1020007010286 A KR 1020007010286A KR 20007010286 A KR20007010286 A KR 20007010286A KR 20010041962 A KR20010041962 A KR 20010041962A
- Authority
- KR
- South Korea
- Prior art keywords
- slurry
- abrasive
- chemical mechanical
- mechanical polishing
- substrate
- Prior art date
Links
- 239000002002 slurry Substances 0.000 title claims abstract description 177
- 238000005498 polishing Methods 0.000 title claims abstract description 111
- 239000000126 substance Substances 0.000 title claims abstract description 45
- 239000000758 substrate Substances 0.000 title claims abstract description 45
- 239000010949 copper Substances 0.000 title claims description 51
- 229910052802 copper Inorganic materials 0.000 title description 28
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title description 26
- 239000007800 oxidant agent Substances 0.000 claims abstract description 45
- 239000008139 complexing agent Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 30
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000010936 titanium Substances 0.000 claims abstract description 20
- 239000004094 surface-active agent Substances 0.000 claims abstract description 19
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 14
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims description 44
- 239000002184 metal Substances 0.000 claims description 44
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 40
- 229910044991 metal oxide Inorganic materials 0.000 claims description 40
- 150000004706 metal oxides Chemical class 0.000 claims description 39
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 30
- 230000001590 oxidative effect Effects 0.000 claims description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 26
- 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 25
- 239000011975 tartaric acid Substances 0.000 claims description 25
- 235000002906 tartaric acid Nutrition 0.000 claims description 25
- 239000002245 particle Substances 0.000 claims description 20
- 239000003082 abrasive agent Substances 0.000 claims description 18
- 239000006185 dispersion Substances 0.000 claims description 15
- AQLJVWUFPCUVLO-UHFFFAOYSA-N urea hydrogen peroxide Chemical compound OO.NC(N)=O AQLJVWUFPCUVLO-UHFFFAOYSA-N 0.000 claims description 15
- 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
- 238000007517 polishing process Methods 0.000 claims description 12
- 239000000377 silicon dioxide Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 8
- 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 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 claims description 6
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
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- 239000011164 primary particle Substances 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 4
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 3
- 150000001413 amino acids Chemical class 0.000 claims description 3
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims description 3
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 3
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 3
- 235000015165 citric acid Nutrition 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- 239000004310 lactic acid Substances 0.000 claims description 3
- 235000014655 lactic acid Nutrition 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims 1
- 229910052715 tantalum Inorganic materials 0.000 abstract description 9
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 abstract description 8
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 51
- 239000010408 film Substances 0.000 description 31
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 25
- 239000012964 benzotriazole Substances 0.000 description 25
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 18
- 238000004090 dissolution Methods 0.000 description 17
- 239000002243 precursor Substances 0.000 description 13
- 230000007797 corrosion Effects 0.000 description 12
- 238000002161 passivation Methods 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 11
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- 239000004202 carbamide Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 235000012431 wafers Nutrition 0.000 description 9
- 229910052739 hydrogen Inorganic materials 0.000 description 8
- 238000001465 metallisation Methods 0.000 description 8
- 238000000197 pyrolysis Methods 0.000 description 8
- 239000010409 thin film Substances 0.000 description 8
- 229920013808 TRITON DF-16 Polymers 0.000 description 7
- 239000012736 aqueous medium Substances 0.000 description 7
- 239000000654 additive Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 5
- 238000011068 loading method Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 5
- 229910052721 tungsten Inorganic materials 0.000 description 5
- 239000010937 tungsten Substances 0.000 description 5
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical compound [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 description 4
- 239000002609 medium Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 235000011054 acetic acid Nutrition 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- NGPGDYLVALNKEG-UHFFFAOYSA-N azanium;azane;2,3,4-trihydroxy-4-oxobutanoate Chemical compound [NH4+].[NH4+].[O-]C(=O)C(O)C(O)C([O-])=O NGPGDYLVALNKEG-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- -1 potassium ferricyanide Chemical compound 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- 239000004471 Glycine Substances 0.000 description 2
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 2
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000000908 ammonium hydroxide Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000002848 electrochemical method Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- DOBUSJIVSSJEDA-UHFFFAOYSA-L 1,3-dioxa-2$l^{6}-thia-4-mercuracyclobutane 2,2-dioxide Chemical class [Hg+2].[O-]S([O-])(=O)=O DOBUSJIVSSJEDA-UHFFFAOYSA-L 0.000 description 1
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 1
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- NECRQCBKTGZNMH-UHFFFAOYSA-N 3,5-dimethylhex-1-yn-3-ol Chemical compound CC(C)CC(C)(O)C#C NECRQCBKTGZNMH-UHFFFAOYSA-N 0.000 description 1
- 229910018182 Al—Cu Inorganic materials 0.000 description 1
- IERHLVCPSMICTF-XVFCMESISA-N CMP group Chemical group P(=O)(O)(O)OC[C@@H]1[C@H]([C@H]([C@@H](O1)N1C(=O)N=C(N)C=C1)O)O IERHLVCPSMICTF-XVFCMESISA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000003917 TEM image Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- WPPDFTBPZNZZRP-UHFFFAOYSA-N aluminum copper Chemical compound [Al].[Cu] WPPDFTBPZNZZRP-UHFFFAOYSA-N 0.000 description 1
- 150000003868 ammonium compounds Chemical class 0.000 description 1
- BTBJBAZGXNKLQC-UHFFFAOYSA-N ammonium lauryl sulfate Chemical compound [NH4+].CCCCCCCCCCCCOS([O-])(=O)=O BTBJBAZGXNKLQC-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000001246 colloidal dispersion Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013317 conjugated microporous polymer Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 150000001923 cyclic compounds Chemical class 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 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
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003643 myeloid progenitor cell Anatomy 0.000 description 1
- YLYIXDZITBMCIW-UHFFFAOYSA-N n-hydroxy-n-phenylbenzamide Chemical group C=1C=CC=CC=1N(O)C(=O)C1=CC=CC=C1 YLYIXDZITBMCIW-UHFFFAOYSA-N 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 235000011056 potassium acetate Nutrition 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Substances [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical compound NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- FYNXQOUDSWHQQD-UHFFFAOYSA-N tantalum(5+) pentanitrate Chemical compound [Ta+5].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O FYNXQOUDSWHQQD-UHFFFAOYSA-N 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000004627 transmission electron microscopy Methods 0.000 description 1
- GPRLSGONYQIRFK-MNYXATJNSA-N triton Chemical compound [3H+] GPRLSGONYQIRFK-MNYXATJNSA-N 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
Classifications
-
- 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]
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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Abstract
Description
슬러리 | 연마시 Cu 용해율 Å/분 | (연마 후) Cu 부식율 Å/분 | |
1 | 3% 알루미나, 2% H2O2, 50 ppm 트리톤 DF-16 및 0.04% BTA | 4.8 | 0.2 |
2 | BTA가 없다는 것을 제외하고는 1과 동일 | 24 | 4.8 |
3 | 3% 알루미나, 2% H2O2, 1% 옥살산암모늄, 50 ppm 트리톤 DF-16 및 0.04% BTA | 96 | 1.4 |
4 | BTA가 없다는 것을 제외하고는 3과 동일 | 2,400 | 60 |
5 | 3% 알루미나, 2% H2O2, 1% 타르타르산, 3.65% 우레아, 50 ppm 트리톤 DF-16 및 0.04% BTA | 96 | 1.1 |
6 | BTA가 없다는 것을 제외하고는 5와 동일 | 240 | 24 |
BTA 존재 | BTA 부재 | |||
성능 변수 | 성능 w/TiN | 성능 w/Ta | 성능 w/TiN | 성능 w/Ta |
Cu 연마율 | 3000-8000 Å/분 | 3000-8000 Å/분 | 3639 Å/분 | 5600 Å/분 |
Cu WIWNU | 4.7 (15%) | 5.6% | 7.9% | |
Ti에 대한 선택성 | 1.5 이상 | 1.8:1 | ||
TiN에 대한 선택성 | 1.5:1 | 1.5:1 | ||
Ta에 대한 선택성 | 13:1 | 12:1 | ||
TaN에 대한 선택성 | 7:1 | 8:1 | ||
SiO2에 대한 선택성 | 〉100:1 | 〉100:1 | 〉100:1 | 〉100:1 |
디싱 (150㎛) | 1145 Å | |||
디싱 (100㎛) | 2900 Å (15% 과연마) | 850 Å | 1100 Å | |
디싱 (50㎛) | 650 Å | 1200 Å | ||
디싱 (20㎛) | 577 Å | |||
디싱 (15㎛) | 290 Å | 290 Å | ||
부식 | 483 Å | 1250 Å (15% 과연마) | 255 Å | 400 Å |
CMP 입자 계수 후(산화물 완충제 없음) | 〈50 입자/웨이퍼 (초기 0.2 미크론) | |||
PETEOS 상의 Cu(E10 에서) | 측정불가능 내지 80 | |||
PETEOS 표면 거칠기 | 〈0.30 nm rms (AFM 사용) | |||
1.6㎛의 Cu를 갖는 투명한 문양의 웨이퍼에 대한 시간 | 〈4 분 |
슬러리 | Cu 제거율 Å/분 | Ta 제거율 Å/분 | PETEOS 제거율 Å/분 | |
1 | 3% 알루미나, 2.5% H2O2, 1.25% 타르타르산, 3.65% 우레아, 50 ppm 트리톤 DF-16 | 2396 | 434 | 77 |
2 | 5% 알루미나, 5% H2O2, 0.7% 타르타르산, 3.65% 우레아, 50 ppm 트리톤 DF-16 | 1025 | 432 | 78 |
3 | 2% 알루미나, 5% H2O2, 0.3% 타르타르산, 3.65% 우레아, 50 ppm 트리톤 DF-16 | 807 | 408 | 135 |
Claims (33)
- 연마제;1종 이상의 산화제; 및시트르산, 락트산, 타르타르산, 말론산, 숙신산, 옥살산, 아미노산 및 그의 염 및 그의 혼합물을 포함하는 화합물 군에서 선택되는 착화제 약 0.1 내지 5.0 중량%를 포함하고, pH가 약 5 내지 약 9이며, 피막 형성제를 포함하지 않는 화학 기계적 연마용 슬러리.
- 제1항에 있어서, 착화제가 타르타르산인 화학 기계적 연마용 슬러리.
- 제2항에 있어서, 타르타르산이 0.5 내지 약 3.0 중량% 범위의 양으로 존재하는 화학 기계적 연마용 슬러리.
- 제1항에 있어서, 산화제는 환원시 히드록실기를 형성하는 화합물인 화학 기계적 연마용 슬러리.
- 제4항에 있어서, 산화제가 과산화수소, 우레아 과산화수소 및 그의 조합으로 구성된 군에서 선택되는 화학 기계적 연마용 슬러리.
- 제5항에 있어서, 과산화수소가 약 0.3 내지 약 17 중량%의 양으로 존재하는 화학 기계적 연마용 슬러리.
- 연마제;과산화수소, 우레아 과산화수소 및 그의 혼합물로 구성된 군에서 선택되는 산화제; 및타르타르산을 포함하고, pH가 5 내지 9이며, 피막 형성제를 포함하지 않는 화학 기계적 연마용 슬러리.
- 제7항에 있어서, 산화제가 과산화수소인 화학 기계적 연마용 슬러리.
- 제7항에 있어서, 산화제가 우레아 과산화수소인 화학 기계적 연마용 슬러리.
- 제7항에 있어서, 타르타르산이 슬러리에 약 0.5 내지 약 3.0 중량% 범위의 양으로 존재하는 화학 기계적 연마용 슬러리.
- 제7항에 있어서, 연마제가 1종 이상의 금속 산화물인 화학 기계적 연마용 슬러리.
- 제11항에 있어서, 금속 산화물 연마제가 알루미나, 세리아, 게르마니아, 실리카, 티타니아, 지르코니아 및 그의 혼합물을 포함하는 군에서 선택되는 화학 기계적 연마용 슬러리.
- 제7항에 있어서, 연마제가 금속 산화물의 수분산액인 화학 기계적 연마용 슬러리.
- 제11항에 있어서, 금속 산화물 연마제는 입도 분포가 약 1.0 미크론 미만이며 집합체의 평균 직경이 약 0.4 미크론 미만인 금속 산화물 집합체로 이루어져 있는 화학 기계적 연마용 슬러리.
- 제11항에 있어서, 금속 산화물 연마제는 1차 입경이 0.4 미크론 미만이고, 표면적이 약 10 내지 약 250 m2/g의 범위인 분리된 개별 금속 산화물의 구체로 이루어져 있는 화학 기계적 연마용 슬러리.
- 제7항에 있어서, 연마제의 표면적이 약 5 내지 약 430 m2/g인 화학 기계적 연마용 슬러리.
- 제7항에 있어서, 연마제의 표면적이 약 30 내지 약 170 m2/g인 화학 기계적 연마용 슬러리.
- 제7항에 있어서, 연마제가 침강 연마제 또는 열분해법 연마제로 구성된 군에서 선택되는 화학 기계적 연마용 슬러리.
- 알루미나 연마제 약 1.0 내지 약 15.0 중량%;과산화수소 약 1.0 내지 약 12.0 중량%; 및타르타르산 약 0.5 내지 약 3.0 중량%를 포함하고, pH가 약 5 내지 약 9로 조정되었으며, 피막 형성제를 포함하지 않는 화학 기계적 연마용 슬러리.
- 제19항에 있어서, 1종 이상의 계면활성제를 포함하는 화학 기계적 연마용 슬러리.
- (a) 연마제 약 1.0 내지 약 15.0 중량%, 산화제 약 0.3 내지 약 17.0 중량%, 1종 이상의 착화제 약 0.1 내지 약 5.0 중량% 및 탈이온수를 혼합하여 피막 형성제를 함유하지 않는 화학 기계적 연마용 슬러리를 제공하는 단계;(b) 이 슬러리의 pH를 약 5 내지 약 9로 조정하는 단계;(c) 이 화학 기계적 연마용 슬러리를 기판에 도포하는 단계; 및(d) 패드를 기판과 접촉시키고, 기판에 대해 패드를 이동시켜 기판으로부터 금속층의 적어도 일부를 제거하는 단계를 포함하는, 하나 이상의 금속층을 포함하는 기판의 연마 방법.
- 제21항에 있어서, 기판이 구리 합금 함유층을 포함하는 방법.
- 제21항에 있어서, 기판이 티타늄 및 질화티타늄층을 포함하며, 이 층의 적어도 일부를 (c) 단계에서 제거하는 방법.
- 제21항에 있어서, 패드를 기판과 접촉시키기 전에 화학 기계적 연마용 슬러리를 패드에 도포하는 방법.
- 제21항에 있어서, 산화제가 과산화수소, 우레아 과산화수소 및 그의 혼합물인 방법.
- 제21항에 있어서, 착화제가 타르타르산인 방법.
- 제21항에 있어서, 화학 기계적 연마용 슬러리의 pH가 약 5.0 내지 약 9.0인 방법.
- 제21항에 있어서, 연마제가 금속 산화물인 방법.
- 제28항에 있어서, 금속 산화물 연마제가 알루미나, 세리아, 게르마니아, 실리카, 티타니아, 지르코니아 및 그의 혼합물을 포함하는 군에서 선택되는 방법.
- 제21항에 있어서, 연마제가 금속 산화물의 수분산액인 방법.
- 제30항에 있어서, 금속 산화물 연마제가 침강 알루미나, 열분해법 알루미나, 침강 실리카, 열분해법 실리카 및 그의 혼합물로 구성되는 군에서 선택되는 방법.
- (a) 알루미나 약 1.0 내지 약 15.0 중량%, 과산화수소 약 1.0 내지 약 12.0 중량%, 타르타르산 약 0.5 내지 약 3.0 중량% 및 탈이온수를 혼합하여 티타늄에 대한 구리 합금의 연마 선택도 [Cu:Ti]가 약 4 미만인 화학 기계적 연마용 슬러리를 제공하는 단계;(b) 이 화학 기계적 연마용 슬러리의 pH를 약 5.0 내지 약 9.0으로 조정하는 단계;(c) 이 화학 기계적 연마용 슬러리를 기판에 도포하는 단계; 및(d) 패드를 기판과 접촉시키고, 기판에 대해 패드를 이동시켜 구리 합금층의 적어도 일부, 티타늄층의 적어도 일부 및 질화티타늄층의 적어도 일부를 제거하는 단계를 포함하는, 구리 합금층, 티타늄층 및 질화티타늄층을 포함하는 기판의 연마 방법.
- (a) 착화제가 들어 있는 제1 용기;(b) 산화제가 들어 있는 제2 용기; 및(c) 제1 용기, 제2 용기 또는 제3 용기 중 어느 하나에 들어 있는 연마제를 포함하는, 화학 기계적 연마용 슬러리를 제조하는 데 유용한 멀티-팩키지 시스템.
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US09/040,630 US6432828B2 (en) | 1998-03-18 | 1998-03-18 | Chemical mechanical polishing slurry useful for copper substrates |
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US9/040,630 | 1998-03-18 |
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KR (1) | KR100594561B1 (ko) |
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AU (1) | AU3100499A (ko) |
CA (1) | CA2324151A1 (ko) |
DE (1) | DE69933015T2 (ko) |
ID (1) | ID27122A (ko) |
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- 1999-03-18 WO PCT/US1999/005968 patent/WO1999047618A1/en active IP Right Grant
- 1999-03-18 KR KR1020007010286A patent/KR100594561B1/ko not_active IP Right Cessation
- 1999-03-18 TW TW088104239A patent/TWI256966B/zh not_active IP Right Cessation
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Cited By (2)
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KR100370160B1 (ko) * | 2000-10-27 | 2003-01-30 | 주식회사 하이닉스반도체 | 반도체 소자의 텅스텐 플러그 형성방법 |
KR101072342B1 (ko) * | 2003-06-30 | 2011-10-11 | 동우 화인켐 주식회사 | 구리의 화학적 기계적 연마를 위한 슬러리 조성물 |
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JP2007150341A (ja) | 2007-06-14 |
CN1301288A (zh) | 2001-06-27 |
ID27122A (id) | 2001-03-01 |
US20020168923A1 (en) | 2002-11-14 |
US20010049910A1 (en) | 2001-12-13 |
CA2324151A1 (en) | 1999-09-23 |
US6620037B2 (en) | 2003-09-16 |
JP2002506915A (ja) | 2002-03-05 |
EP1064338A1 (en) | 2001-01-03 |
DE69933015T2 (de) | 2006-12-14 |
US6432828B2 (en) | 2002-08-13 |
JP5539934B2 (ja) | 2014-07-02 |
DE69933015D1 (de) | 2006-10-12 |
US20040009671A1 (en) | 2004-01-15 |
EP1064338B1 (en) | 2006-08-30 |
IL138483A0 (en) | 2001-10-31 |
KR100594561B1 (ko) | 2006-06-30 |
TWI256966B (en) | 2006-06-21 |
JP2012004588A (ja) | 2012-01-05 |
AU3100499A (en) | 1999-10-11 |
WO1999047618A1 (en) | 1999-09-23 |
CN1157450C (zh) | 2004-07-14 |
US7381648B2 (en) | 2008-06-03 |
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