JP2019513297A - 基板を化学機械研磨する方法 - Google Patents
基板を化学機械研磨する方法 Download PDFInfo
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- 238000005498 polishing Methods 0.000 title claims abstract description 173
- 239000000126 substance Substances 0.000 title claims abstract description 127
- 239000000758 substrate Substances 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000010936 titanium Substances 0.000 claims abstract description 117
- 239000000203 mixture Substances 0.000 claims abstract description 83
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 74
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 74
- 239000010937 tungsten Substances 0.000 claims abstract description 74
- VVJKKWFAADXIJK-UHFFFAOYSA-N Allylamine Chemical compound NCC=C VVJKKWFAADXIJK-UHFFFAOYSA-N 0.000 claims abstract description 72
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 66
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 66
- 238000007517 polishing process Methods 0.000 claims abstract description 58
- 239000000654 additive Substances 0.000 claims abstract description 33
- 230000000996 additive effect Effects 0.000 claims abstract description 32
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000008119 colloidal silica Substances 0.000 claims abstract description 28
- -1 iron ions Chemical class 0.000 claims abstract description 22
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims abstract description 20
- 239000007800 oxidant agent Substances 0.000 claims abstract description 15
- 239000003002 pH adjusting agent Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 15
- 229920002635 polyurethane Polymers 0.000 claims description 15
- 239000004814 polyurethane Substances 0.000 claims description 15
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 229920000083 poly(allylamine) Polymers 0.000 claims description 13
- 229920002518 Polyallylamine hydrochloride Polymers 0.000 claims description 11
- 239000001294 propane Substances 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 claims description 6
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 4
- SZQUEWJRBJDHSM-UHFFFAOYSA-N iron(3+);trinitrate;nonahydrate Chemical compound O.O.O.O.O.O.O.O.O.[Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O SZQUEWJRBJDHSM-UHFFFAOYSA-N 0.000 claims description 4
- 239000003082 abrasive agent Substances 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 16
- 235000012431 wafers Nutrition 0.000 description 13
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- 239000004065 semiconductor Substances 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 3
- 239000006061 abrasive grain Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical group O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- ROBFUDYVXSDBQM-UHFFFAOYSA-N hydroxymalonic acid Chemical compound OC(=O)C(O)C(O)=O ROBFUDYVXSDBQM-UHFFFAOYSA-N 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 239000011859 microparticle Substances 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- LLYCMZGLHLKPPU-UHFFFAOYSA-M perbromate Chemical compound [O-]Br(=O)(=O)=O LLYCMZGLHLKPPU-UHFFFAOYSA-M 0.000 description 2
- LLYCMZGLHLKPPU-UHFFFAOYSA-N perbromic acid Chemical class OBr(=O)(=O)=O LLYCMZGLHLKPPU-UHFFFAOYSA-N 0.000 description 2
- KHIWWQKSHDUIBK-UHFFFAOYSA-N periodic acid Chemical class OI(=O)(=O)=O KHIWWQKSHDUIBK-UHFFFAOYSA-N 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
- 239000011885 synergistic combination Substances 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
- 150000000703 Cerium Chemical class 0.000 description 1
- IETTZRFSJGYACA-UHFFFAOYSA-N Cl.S(=O)(=O)(O)OOS(=O)(=O)O Chemical compound Cl.S(=O)(=O)(O)OOS(=O)(=O)O IETTZRFSJGYACA-UHFFFAOYSA-N 0.000 description 1
- 229910002554 Fe(NO3)3·9H2O Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- SXDBWCPKPHAZSM-UHFFFAOYSA-M bromate Chemical class [O-]Br(=O)=O SXDBWCPKPHAZSM-UHFFFAOYSA-M 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- 150000001868 cobalt Chemical class 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000002296 dynamic light scattering Methods 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 230000009881 electrostatic interaction Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- HCPOCMMGKBZWSJ-UHFFFAOYSA-N ethyl 3-hydrazinyl-3-oxopropanoate Chemical compound CCOC(=O)CC(=O)NN HCPOCMMGKBZWSJ-UHFFFAOYSA-N 0.000 description 1
- 238000011066 ex-situ storage Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 150000004677 hydrates Chemical class 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
- 150000007529 inorganic bases Chemical class 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000007522 mineralic acids Chemical group 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound 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
- 238000002360 preparation method Methods 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 150000003378 silver Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012876 topography 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
- H01L21/02002—Preparing wafers
- H01L21/02005—Preparing bulk and homogeneous wafers
- H01L21/02008—Multistep processes
- H01L21/0201—Specific process step
- H01L21/02024—Mirror polishing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/30625—With simultaneous mechanical treatment, e.g. mechanico-chemical polishing
-
- 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]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
- B24B37/042—Lapping machines or devices; Accessories designed for working plane surfaces operating processes therefor
- B24B37/044—Lapping machines or devices; Accessories designed for working plane surfaces operating processes therefor characterised by the composition of the lapping agent
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Description
本発明の基板を研磨する方法は、ポリ(アリルアミン塩酸塩)及びポリ(アリルアミン)からなる群より選択されるアリルアミン添加剤、酸化剤、カルボン酸、並びに恒久的な正の表面電荷を有するコロイダルシリカ砥粒、並びに鉄(III)イオンの供給源の相乗効果的組み合わせを含有する化学機械研磨組成物を用いる。驚くべきことに、前記の相乗効果的組み合わせは、研磨中に基板表面からタングステン(W)を速やかに除去する一方で、チタン(Ti)の除去を大幅に遅らせることが分かった。
化学機械研磨組成物の調製
比較例C1−C8及び実施例1−3の化学機械研磨組成物は、表1に記載された量の成分を、362ppmのFe(NO3)3、1,320ppmのマロン酸、2.0重量%の過酸化水素、及び残余の脱イオン水と合わせ、水酸化カリウム又は硝酸で組成物のpHを2.3に調整することにより調製した。
化学機械研磨除去速度実験
比較例C1−C8及び実施例1−3に従って調製した化学機械研磨組成物をそれぞれ用いて、比較例PC1−PC8及び実施例P1−P3において、除去速度研磨試験を実施した。研磨除去速度実験は、Applied Materials製の200mmのMirra(登録商標)研磨機に取り付けた200mmブランケットウェーハ上で実施した。研磨除去速度実験は、Novellus製200mmブランケット、厚さ15kÅのオルトケイ酸テトラエチル(TEOS)シートウェーハ;Wafernetから市販されているタングステン(W)及びチタン(Ti)のブランケットウェーハ上で実施した。研磨実験は全て、SP2310サブパッドと組み合わせたIC1010(商標)ポリウレタン研磨パッド(Rohm and Haas Electronic Materials CMP Inc.から市販)を使用し、21.4kPa(3.1psi)のダウンフォース、125mL/minの化学機械研磨組成物流量、80rpmのテーブル回転速度及び81rpmのキャリア回転速度で実施した。ダイヤモンドパッドコンディショナPDA33A-D(Kinik Companyから市販)を用いて研磨パッドをコンディショニングした。研磨パッドをコンディショナにより、80rpmのテーブル速度及び36rpmのコンディショナ速度で、9lbs(4.1kg)のコンディショニングダウンフォースを使用して15分間、その後、7lbs(3.18kg)のコンディショニングダウンフォースを使用して更に15分間、慣らし運用した。研磨実験間に、7lbs(3.18kg)のダウンフォースを使用して24秒間、研磨の前に、研磨パッドをエクスサイチューで更にコンディショニングした。TEOS除去速度は、KLA-Tencor FX200計測ツールを使用して、研磨前後の膜の厚みを測定することにより決定した。タングステン(W)及びチタン(Ti)の除去速度は、KLA-Tencor RS100C計測ツールを使用して決定した。除去速度実験の結果を表2に与える。
Claims (10)
- タングステン(W)及びチタン(Ti)を含む基板を供給する工程;
初期成分として:
水、
酸化剤、
ポリ(アリルアミン塩酸塩)及びポリ(アリルアミン)からなる群より選択されるアリルアミン添加剤、
恒久的な正の表面電荷を有するコロイダルシリカ砥粒、
カルボン酸、
鉄(III)イオンの供給源、並びに
任意選択でpH調整剤
を含む化学機械研磨組成物を供給する工程;
研磨面を有する化学機械研磨パッドを供給する工程;
化学機械研磨パッドと基板との間の界面に動的接触を生じさせる工程;並びに
化学機械研磨パッドの研磨面上、化学機械研磨パッドと基板との間の界面又はその近くに化学機械研磨組成物を分注する工程;
を含む、基板を研磨する方法であって、
タングステン(W)の少なくともいくらかが、あるタングステン(W)除去速度で基板から研磨除去され;チタン(Ti)の少なくともいくらかが、あるチタン(Ti)除去速度で基板から研磨除去され;供給される化学機械研磨組成物が、チタン(Ti)に対するタングステン(W)のある除去速度選択比を有し;タングステン(W)除去速度が、チタン(Ti)除去速度より≧35倍高い、方法。 - 200mmの研磨機上、毎分80回転のプラテン速度、毎分81回転のキャリア速度、125mL/minの化学機械研磨組成物流量、21.4kPaの公称ダウンフォースで、タングステン(W)除去速度が≧1,000Å/minであり、化学機械研磨パッドが、ポリマー中空コア微粒子を含有する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、請求項1に記載の方法。
- チタン(Ti)除去速度が≦50Å/minであり、タングステン(W)除去速度がチタン(Ti)除去速度より≧35倍高い、請求項2に記載の方法。
- 供給される化学機械研磨組成物が、初期成分として:
水、
0.01〜10重量%の過酸化水素である酸化剤、
0.01〜10重量%のコロイダルシリカ砥粒、
ポリ(アリルアミン塩酸塩)であるアリルアミン添加剤であって、アリルアミン添加剤に対するコロイダルシリカ砥粒の質量比が≧100であるアリルアミン添加剤、
500〜5,000質量ppmのプロパン二酸であるカルボン酸、
100〜1,000質量ppmの硝酸第二鉄九水和物である鉄(III)イオンの供給源、及び
任意選択でpH調整剤
を含み、化学機械研磨組成物のpHが1〜4である、請求項1に記載の方法。 - 200mmの研磨機上、毎分80回転のプラテン速度、毎分81回転のキャリア速度、125mL/minの化学機械研磨組成物流量、21.4kPaの公称ダウンフォースで、タングステン(W)除去速度が≧1,000Å/minであり、化学機械研磨パッドが、ポリマー中空コア微粒子を含有する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、請求項4に記載の方法。
- チタン(Ti)除去速度が≦25Å/minであり、タングステン(W)除去速度がチタン(Ti)除去速度より≧500倍高い、請求項5に記載の方法。
- 供給される化学機械研磨組成物が、初期成分として:
水、
0.01〜10重量%の過酸化水素である酸化剤、
0.01〜10重量%のコロイダルシリカ砥粒、
ポリ(アリルアミン)であるアリルアミン添加剤であって、アリルアミン添加剤に対するコロイダルシリカ砥粒の質量比が≧150であるアリルアミン添加剤、
500〜5,000質量ppmのプロパン二酸であるカルボン酸、
100〜1,000質量ppmの硝酸第二鉄である鉄(III)イオンの供給源、及び
任意選択でpH調整剤
を含み、化学機械研磨組成物のpHが1〜4である、請求項1に記載の方法。 - 200mmの研磨機上、毎分80回転のプラテン速度、毎分81回転のキャリア速度、125mL/minの化学機械研磨組成物流量、21.4kPaの公称ダウンフォースで、タングステン(W)除去速度が≧1,000Å/minであり、化学機械研磨パッドが、ポリマー中空コア微粒子を含有する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、請求項7に記載の方法。
- チタン(Ti)除去速度が≦50Å/minであり、タングステン(W)除去速度がチタン(Ti)除去速度より≧35倍高い、請求項8に記載の方法。
- チタン(Ti)除去速度が≦5Å/minであり、タングステン(W)除去速度がチタン(Ti)除去速度より≧500倍高い、請求項8に記載の方法。
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JP2007214155A (ja) | 2006-02-07 | 2007-08-23 | Fujifilm Corp | バリア用研磨液及び化学的機械的研磨方法 |
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US8617275B2 (en) * | 2008-04-23 | 2013-12-31 | Hitachi Chemical Company, Ltd. | Polishing agent and method for polishing substrate using the polishing agent |
JP5844135B2 (ja) * | 2010-12-24 | 2016-01-13 | 花王株式会社 | 研磨液組成物の製造方法 |
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