JP7231362B2 - コバルト用ケミカルメカニカルポリッシング方法 - Google Patents
コバルト用ケミカルメカニカルポリッシング方法 Download PDFInfo
- Publication number
- JP7231362B2 JP7231362B2 JP2018175754A JP2018175754A JP7231362B2 JP 7231362 B2 JP7231362 B2 JP 7231362B2 JP 2018175754 A JP2018175754 A JP 2018175754A JP 2018175754 A JP2018175754 A JP 2018175754A JP 7231362 B2 JP7231362 B2 JP 7231362B2
- Authority
- JP
- Japan
- Prior art keywords
- chemical mechanical
- mechanical polishing
- optionally
- cobalt
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005498 polishing Methods 0.000 title claims description 201
- 239000000126 substance Substances 0.000 title claims description 141
- 239000010941 cobalt Substances 0.000 title claims description 69
- 229910017052 cobalt Inorganic materials 0.000 title claims description 69
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 title claims description 69
- 238000000034 method Methods 0.000 title claims description 29
- 239000000203 mixture Substances 0.000 claims description 90
- 239000000758 substrate Substances 0.000 claims description 85
- 239000002245 particle Substances 0.000 claims description 38
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 36
- 239000008119 colloidal silica Substances 0.000 claims description 32
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 31
- 150000003839 salts Chemical class 0.000 claims description 31
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 26
- 230000007797 corrosion Effects 0.000 claims description 20
- 238000005260 corrosion Methods 0.000 claims description 20
- 239000007800 oxidant agent Substances 0.000 claims description 20
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 claims description 19
- 239000003112 inhibitor Substances 0.000 claims description 19
- 239000003002 pH adjusting agent Substances 0.000 claims description 18
- 235000004279 alanine Nutrition 0.000 claims description 17
- 229920002635 polyurethane Polymers 0.000 claims description 17
- 239000004814 polyurethane Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000006061 abrasive grain Substances 0.000 claims description 15
- 229920006318 anionic polymer Polymers 0.000 claims description 14
- 230000003115 biocidal effect Effects 0.000 claims description 14
- 239000003139 biocide Substances 0.000 claims description 14
- 239000004094 surface-active agent Substances 0.000 claims description 6
- 239000011859 microparticle Substances 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims 1
- 238000007517 polishing process Methods 0.000 description 35
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical group [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 21
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 18
- -1 Peracetates Chemical class 0.000 description 17
- 229960003767 alanine Drugs 0.000 description 15
- 239000002002 slurry Substances 0.000 description 15
- 125000003118 aryl group Chemical group 0.000 description 14
- 239000002253 acid Substances 0.000 description 13
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 12
- 235000012431 wafers Nutrition 0.000 description 12
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 9
- 239000001361 adipic acid Substances 0.000 description 9
- 235000011037 adipic acid Nutrition 0.000 description 9
- 239000004065 semiconductor Substances 0.000 description 9
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 7
- 239000004615 ingredient Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 229910017464 nitrogen compound Inorganic materials 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 6
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 6
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 6
- 239000001630 malic acid Substances 0.000 description 6
- 235000011090 malic acid Nutrition 0.000 description 6
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- GFFGJBXGBJISGV-UHFFFAOYSA-N Adenine Chemical compound NC1=NC=NC2=C1N=CN2 GFFGJBXGBJISGV-UHFFFAOYSA-N 0.000 description 4
- 229930024421 Adenine Natural products 0.000 description 4
- QNAYBMKLOCPYGJ-UHFFFAOYSA-N D-alpha-Ala Natural products CC([NH3+])C([O-])=O QNAYBMKLOCPYGJ-UHFFFAOYSA-N 0.000 description 4
- QNAYBMKLOCPYGJ-UWTATZPHSA-N L-Alanine Natural products C[C@@H](N)C(O)=O QNAYBMKLOCPYGJ-UWTATZPHSA-N 0.000 description 4
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 4
- 229960000643 adenine Drugs 0.000 description 4
- 235000015165 citric acid Nutrition 0.000 description 4
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 4
- 239000011976 maleic acid Substances 0.000 description 4
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 4
- 238000005240 physical vapour deposition Methods 0.000 description 4
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 235000006408 oxalic acid Nutrition 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 2
- NSPMIYGKQJPBQR-UHFFFAOYSA-N 4H-1,2,4-triazole Chemical compound C=1N=CNN=1 NSPMIYGKQJPBQR-UHFFFAOYSA-N 0.000 description 2
- FLDCSPABIQBYKP-UHFFFAOYSA-N 5-chloro-1,2-dimethylbenzimidazole Chemical compound ClC1=CC=C2N(C)C(C)=NC2=C1 FLDCSPABIQBYKP-UHFFFAOYSA-N 0.000 description 2
- 239000001741 Ammonium adipate Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 150000001294 alanine derivatives Chemical class 0.000 description 2
- 235000019293 ammonium adipate Nutrition 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 2
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- SMVRDGHCVNAOIN-UHFFFAOYSA-L disodium;1-dodecoxydodecane;sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O.CCCCCCCCCCCCOCCCCCCCCCCCC SMVRDGHCVNAOIN-UHFFFAOYSA-L 0.000 description 2
- 238000002296 dynamic light scattering Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- BEGLCMHJXHIJLR-UHFFFAOYSA-N methylisothiazolinone Chemical compound CN1SC=CC1=O BEGLCMHJXHIJLR-UHFFFAOYSA-N 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- LLYCMZGLHLKPPU-UHFFFAOYSA-N perbromic acid Chemical class OBr(=O)(=O)=O LLYCMZGLHLKPPU-UHFFFAOYSA-N 0.000 description 2
- 239000013500 performance material Substances 0.000 description 2
- KHIWWQKSHDUIBK-UHFFFAOYSA-N periodic acid Chemical class OI(=O)(=O)=O KHIWWQKSHDUIBK-UHFFFAOYSA-N 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- GCHCGDFZHOEXMP-UHFFFAOYSA-L potassium adipate Chemical compound [K+].[K+].[O-]C(=O)CCCCC([O-])=O GCHCGDFZHOEXMP-UHFFFAOYSA-L 0.000 description 2
- 239000001608 potassium adipate Substances 0.000 description 2
- 235000011051 potassium adipate Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- KYKFCSHPTAVNJD-UHFFFAOYSA-L sodium adipate Chemical compound [Na+].[Na+].[O-]C(=O)CCCCC([O-])=O KYKFCSHPTAVNJD-UHFFFAOYSA-L 0.000 description 2
- 239000001601 sodium adipate Substances 0.000 description 2
- 235000011049 sodium adipate Nutrition 0.000 description 2
- 235000002639 sodium chloride Nutrition 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- GLVYLTSKTCWWJR-UHFFFAOYSA-N 2-carbonoperoxoylbenzoic acid Chemical compound OOC(=O)C1=CC=CC=C1C(O)=O GLVYLTSKTCWWJR-UHFFFAOYSA-N 0.000 description 1
- 229940100555 2-methyl-4-isothiazolin-3-one Drugs 0.000 description 1
- 229940100484 5-chloro-2-methyl-4-isothiazolin-3-one Drugs 0.000 description 1
- 150000000703 Cerium Chemical class 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000032368 Device malfunction Diseases 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical class C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical group O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001370 alpha-amino acid derivatives Chemical class 0.000 description 1
- 235000008206 alpha-amino acids Nutrition 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 150000003851 azoles Chemical class 0.000 description 1
- SXDBWCPKPHAZSM-UHFFFAOYSA-M bromate Chemical class [O-]Br(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-M 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- DHNRXBZYEKSXIM-UHFFFAOYSA-N chloromethylisothiazolinone Chemical compound CN1SC(Cl)=CC1=O DHNRXBZYEKSXIM-UHFFFAOYSA-N 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001868 cobalt Chemical class 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229930182470 glycoside Natural products 0.000 description 1
- 150000002338 glycosides Chemical class 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical class Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 150000007529 inorganic bases Chemical class 0.000 description 1
- ICIWUVCWSCSTAQ-UHFFFAOYSA-N iodic acid Chemical class OI(=O)=O ICIWUVCWSCSTAQ-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- MMIPFLVOWGHZQD-UHFFFAOYSA-N manganese(3+) Chemical compound [Mn+3] MMIPFLVOWGHZQD-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000007522 mineralic acids Chemical group 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- JPMIIZHYYWMHDT-UHFFFAOYSA-N octhilinone Chemical compound CCCCCCCCN1SC=CC1=O JPMIIZHYYWMHDT-UHFFFAOYSA-N 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical class OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 1
- 150000004965 peroxy acids Chemical class 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920001444 polymaleic acid Polymers 0.000 description 1
- UJLZCNZPJMYEKF-DKWTVANSSA-M potassium;(2s)-2-aminopropanoate Chemical compound [K+].C[C@H](N)C([O-])=O UJLZCNZPJMYEKF-DKWTVANSSA-M 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 150000003378 silver Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- ZEZSZCSSTDPVDM-DKWTVANSSA-M sodium;(2s)-2-aminopropanoate Chemical compound [Na+].C[C@H](N)C([O-])=O ZEZSZCSSTDPVDM-DKWTVANSSA-M 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000012360 testing method Methods 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
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
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- 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
-
- 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
- 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
- C09K3/1409—Abrasive particles per se
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- ing And Chemical Polishing (AREA)
Description
本明細書全体を通じて使用される次の略語は、文脈に別段の指示がない限り、次の意味を有する:℃=摂氏温度、g=グラム、L=リットル、mL=ミリリットル、μ=μm=ミクロン、kPa=キロパスカル、Å=オングストローム、mV=ミリボルト、DI=脱イオン化された、mm=ミリメートル、cm=センチメートル、min=分、sec=秒、rpm=毎分の回転数、lbs=ポンド、kg=キログラム、Co=コバルト、Ti=チタン、TiN=窒化チタン、H2O2=過酸化水素、KOH=水酸化カリウム、wt%=重量パーセント、PVD=物理蒸着法、RR=除去速度、PS=研磨スラリー、及びCS=対照スラリー。
(スラリー配合物)
研磨の検討に用いた表1及び2のすべてのスラリーは、以下に述べる方法で製造した。アラニンを脱イオン水に加え、オーバーヘッド撹拌機(300~450RPM)を用いて、完全に溶解するまで混合し、最終アラニン濃度を0.9重量%とし、続いて希KOH溶液(5%又は45%)を用いてpHが7より大きくなるようにpH調整した。以下のコロイダル粒子はFuso chemical Co.,LTDより得た:Fuso PL-2L(23nmの平均直径の球状コロイダルシリカ粒子、入手時の固形分は20重量%)、Fuso SH-3(53nmの平均直径の繭形状コロイダルシリカ粒子が平均長70nmを有する結合した球を形成している、入手時の固形分は34重量%)、FusoPL-3L(47nmの平均直径の球状コロイダルシリカ粒子、入手時の固形分は20重量%)、FusoPL-2(37nmの平均直径の繭形状コロイダルシリカ粒子が平均長70nmを有する結合した球を形成している、入手時の固形分は20重量%)。以下のコロイダルシリカはEMD Performance Materials,Merck KGaAより得た:K1598-B12(20nmの平均直径の球状コロイダルシリカ粒子、入手時の固形分は20重量%)及びK1598-B25(38nmの平均粒径の球状コロイダルシリカ微粒子、入手時の固形分は30重量%)。攪拌しながら、それぞれの種類のコロイダルシリカ粒子を、それぞれのスラリーに規定の重量%まで加え、KOHを用いて最終pHが8になるよう調整した。クリーンルームグレード過酸化水素(30%溶液)を攪拌しながら加え、最終スラリー中過酸化水素濃度0.4重量%とした。前記スラリーは、過酸化水素添加の当日又は翌日に研磨試験に使用した。
Claims (4)
- コバルトのケミカルメカニカルポリッシングの方法であって、
コバルト及び窒化チタンを含む基板を提供すること、
初期成分として:
水;
酸化剤;
少なくとも0.3重量%の量のアラニン又はその塩類;
25nm以下の平均粒径を有するコロイダルシリカ砥粒;及び
任意選択的に、腐食防止剤;
任意選択的に、殺生物剤;
任意選択的に、pH調整剤;
任意選択的に、アニオン性ポリマー;
任意選択的に、界面活性剤;
を含むケミカルメカニカル研磨組成物を提供すること、
研磨表面を有するケミカルメカニカル研磨パッドを提供すること、
前記ケミカルメカニカル研磨パッドと前記基板との間の界面において動的接触を生じさせること、及び
前記ケミカルメカニカル研磨組成物を、前記ケミカルメカニカル研磨パッドの前記研磨表面上に、前記ケミカルメカニカル研磨パッドと前記基板との間の界面又はその近傍において施用し、前記コバルトの少なくとも一部を除去することを含み、
提供される前記ケミカルメカニカル研磨組成物が、200mmの研磨機上、13.8kPaの公称ダウンフォース、200mL/minのケミカルメカニカル研磨組成物流速、毎分87回転のキャリヤ速度、毎分93回転のプラテン回転速度で、≧2000Å/minのコバルト除去速度を有し;かつ、前記ケミカルメカニカル研磨パッドが、ポリマー中空コア微粒子を含むポリウレタン研磨層及びポリウレタン含浸不織布サブパッドを含む、方法。 - コバルトのケミカルメカニカルポリッシングの方法であって、
コバルト及び窒化チタンを含む基板を提供すること、
初期成分として:
水
過酸化水素である酸化剤;
0.3重量%~5重量%のアラニン又はその塩類;
5nm~25nmの平均粒径及び負のゼータ電位を有するコロイダルシリカ砥粒;及び
任意選択的に、腐食防止剤;
任意選択的に、殺生物剤:
任意選択的に、pH調整剤;
任意選択的に、アニオン性ポリマー;
任意選択的に、界面活性剤;
を含むケミカルメカニカル研磨組成物であって、6以上のpHを有するケミカルメカニカル研磨組成物を提供すること、
研磨表面を有するケミカルメカニカル研磨パッドを提供すること、
前記ケミカルメカニカル研磨パッドと前記基板との間の界面において動的接触を生じさせること、及び
前記ケミカルメカニカル研磨組成物を、前記ケミカルメカニカル研磨パッドの前記研磨表面上に、前記ケミカルメカニカル研磨パッドと前記基板との間の界面又はその近傍において施用し、前記コバルトの少なくとも一部を除去することを含み、
提供される前記ケミカルメカニカル研磨組成物が、200mmの研磨機上、13.8kPaの公称ダウンフォース、200mL/minのケミカルメカニカル研磨組成物流速、毎分87回転のキャリヤ速度、毎分93回転のプラテン回転速度で、≧2000Å/minのコバルト除去速度を有し;かつ、前記ケミカルメカニカル研磨パッドが、ポリマー中空コア微粒子を含むポリウレタン研磨層及びポリウレタン含浸不織布サブパッドを含む、方法。 - コバルトのケミカルメカニカルポリッシングの方法であって、
コバルト及び窒化チタンを含む基板を提供すること、
初期成分として:
水;
0.1重量%~2重量%の酸化剤であって、過酸化水素である酸化剤;
0.3重量%~5重量%のアラニン又はその塩類;
0.01重量%~10重量%の、10nm~24nmの平均粒径を有するコロイダルシリカ砥粒;及び、
任意選択的に、腐食防止剤;
任意選択的に、殺生物剤;
任意選択的に、pH調整剤;
任意選択的に、アニオン性ポリマー;
任意選択的に、界面活性剤;
を含むケミカルメカニカル研磨組成物であって、7~9のpHを有するケミカルメカニカル研磨組成物を提供すること、
研磨表面を有するケミカルメカニカル研磨パッドを提供すること、
前記ケミカルメカニカル研磨パッドと前記基板との間の界面において動的接触を生じさせること、及び
前記ケミカルメカニカル研磨組成物を、前記ケミカルメカニカル研磨パッドの前記研磨表面上に、前記ケミカルメカニカル研磨パッドと前記基板との間の界面又はその近傍において施用し、前記コバルトの少なくとも一部を除去することを含み、
提供される前記ケミカルメカニカル研磨組成物が、200mmの研磨機上、13.8kPaの公称ダウンフォース、200mL/minのケミカルメカニカル研磨組成物流速、毎分87回転のキャリヤ速度、毎分93回転のプラテン回転速度で、≧2000Å/minのコバルト除去速度を有し;かつ、前記ケミカルメカニカル研磨パッドが、ポリマー中空コア微粒子を含むポリウレタン研磨層及びポリウレタン含浸不織布サブパッドを含む、方法。 - コバルトのケミカルメカニカルポリッシングの方法であって、
コバルト及び窒化チタンを含む基板を提供すること、
初期成分として:
水;
0.1重量%~1重量%の酸化剤であって、過酸化水素である酸化剤;
0.3重量%~1重量%のアラニン又はその塩類;
1重量%~3重量%の、20nm~23nmの粒径を有するコロイダルシリカ砥粒;及び、
任意選択的に、腐食防止剤;
任意選択的に、殺生物剤;
任意選択的に、KOHであるpH調整剤;
任意選択的に、アニオン性ポリマー;
任意選択的に、界面活性剤;
を含むケミカルメカニカル研磨組成物であって、7.5~9のpHを有するケミカルメカニカル研磨組成物を提供すること、
研磨表面を有するケミカルメカニカル研磨パッドを提供すること、
前記ケミカルメカニカル研磨パッドと前記基板との間の界面において動的接触を生じさせること、及び
前記ケミカルメカニカル研磨組成物を、前記ケミカルメカニカル研磨パッドの前記研磨表面上に、前記ケミカルメカニカル研磨パッドと前記基板との間の界面又はその近傍において施用し、前記コバルトの少なくとも一部を除去することを含み、
提供される前記ケミカルメカニカル研磨組成物が、200mmの研磨機上、13.8kPaの公称ダウンフォース、200mL/minのケミカルメカニカル研磨組成物流速、毎分87回転のキャリヤ速度、毎分93回転のプラテン回転速度で、≧2000Å/minのコバルト除去速度を有し;かつ、前記ケミカルメカニカル研磨パッドが、ポリマー中空コア微粒子を含むポリウレタン研磨層及びポリウレタン含浸不織布サブパッドを含む、方法。
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