TW200815570A - Low dielectric polishing slurry including mixed abrasive particles - Google Patents
Low dielectric polishing slurry including mixed abrasive particles Download PDFInfo
- Publication number
- TW200815570A TW200815570A TW95136466A TW95136466A TW200815570A TW 200815570 A TW200815570 A TW 200815570A TW 95136466 A TW95136466 A TW 95136466A TW 95136466 A TW95136466 A TW 95136466A TW 200815570 A TW200815570 A TW 200815570A
- Authority
- TW
- Taiwan
- Prior art keywords
- polishing liquid
- polishing
- cerium oxide
- liquid according
- aluminum
- Prior art date
Links
- 238000005498 polishing Methods 0.000 title claims abstract description 125
- 239000002245 particle Substances 0.000 title claims abstract description 22
- 239000002002 slurry Substances 0.000 title abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 230000004888 barrier function Effects 0.000 claims abstract description 3
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 66
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 66
- 239000007788 liquid Substances 0.000 claims description 47
- 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 28
- 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 26
- 235000002906 tartaric acid Nutrition 0.000 claims description 26
- 239000011975 tartaric acid Substances 0.000 claims description 26
- 239000003989 dielectric material Substances 0.000 claims description 11
- 239000003082 abrasive agent Substances 0.000 claims description 7
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims description 6
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 6
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- VDZOOKBUILJEDG-UHFFFAOYSA-M tetrabutylammonium hydroxide Chemical compound [OH-].CCCC[N+](CCCC)(CCCC)CCCC VDZOOKBUILJEDG-UHFFFAOYSA-M 0.000 claims description 6
- -1 polypropylene decylamine Polymers 0.000 claims description 5
- 239000004094 surface-active agent Substances 0.000 claims description 5
- 239000004471 Glycine Substances 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000007800 oxidant agent Substances 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- OTRAYOBSWCVTIN-UHFFFAOYSA-N OB(O)O.OB(O)O.OB(O)O.OB(O)O.OB(O)O.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N Chemical compound OB(O)O.OB(O)O.OB(O)O.OB(O)O.OB(O)O.N.N.N.N.N.N.N.N.N.N.N.N.N.N.N OTRAYOBSWCVTIN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000003945 anionic surfactant Substances 0.000 claims description 2
- 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 claims description 2
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 claims description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims 2
- 230000007797 corrosion Effects 0.000 claims 2
- 238000005260 corrosion Methods 0.000 claims 2
- 239000003112 inhibitor Substances 0.000 claims 2
- 239000002699 waste material Substances 0.000 claims 2
- 229920002307 Dextran Polymers 0.000 claims 1
- 229920002125 Sokalan® Polymers 0.000 claims 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims 1
- 150000001413 amino acids Chemical class 0.000 claims 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims 1
- 150000001734 carboxylic acid salts Chemical class 0.000 claims 1
- 239000003093 cationic surfactant Substances 0.000 claims 1
- PTVQQERRDKHGEO-UHFFFAOYSA-N cerium lead Chemical compound [Ce].[Pb] PTVQQERRDKHGEO-UHFFFAOYSA-N 0.000 claims 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims 1
- XJWSAJYUBXQQDR-UHFFFAOYSA-M dodecyltrimethylammonium bromide Chemical compound [Br-].CCCCCCCCCCCC[N+](C)(C)C XJWSAJYUBXQQDR-UHFFFAOYSA-M 0.000 claims 1
- MJEMIOXXNCZZFK-UHFFFAOYSA-N ethylone Chemical compound CCNC(C)C(=O)C1=CC=C2OCOC2=C1 MJEMIOXXNCZZFK-UHFFFAOYSA-N 0.000 claims 1
- 239000004584 polyacrylic acid Substances 0.000 claims 1
- JXOHGGNKMLTUBP-HSUXUTPPSA-N shikimic acid Chemical compound O[C@@H]1CC(C(O)=O)=C[C@@H](O)[C@H]1O JXOHGGNKMLTUBP-HSUXUTPPSA-N 0.000 claims 1
- JXOHGGNKMLTUBP-JKUQZMGJSA-N shikimic acid Natural products O[C@@H]1CC(C(O)=O)=C[C@H](O)[C@@H]1O JXOHGGNKMLTUBP-JKUQZMGJSA-N 0.000 claims 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims 1
- 239000002888 zwitterionic surfactant Substances 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052681 coesite Inorganic materials 0.000 abstract description 5
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 5
- 239000000377 silicon dioxide Substances 0.000 abstract description 5
- 229910052682 stishovite Inorganic materials 0.000 abstract description 5
- 229910052905 tridymite Inorganic materials 0.000 abstract description 5
- 238000007517 polishing process Methods 0.000 abstract description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 3
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 description 14
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 235000010269 sulphur dioxide Nutrition 0.000 description 4
- 239000004291 sulphur dioxide Substances 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical group OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NTWUDWUVKKRQRK-UHFFFAOYSA-N aluminum;cerium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Ce+3] NTWUDWUVKKRQRK-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 2
- SULICOHAQXOMED-YDXPQRMKSA-H dibismuth;(2r,3r)-2,3-dihydroxybutanedioate Chemical compound [Bi+3].[Bi+3].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O.[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O.[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O SULICOHAQXOMED-YDXPQRMKSA-H 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000010954 inorganic particle Substances 0.000 description 2
- 239000011146 organic particle Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229940095064 tartrate Drugs 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- OQQMLOABWOWXKW-UHFFFAOYSA-N C(C1=CC=CC=C1)(=O)OCCCCCCCCCCCC.[Na] Chemical compound C(C1=CC=CC=C1)(=O)OCCCCCCCCCCCC.[Na] OQQMLOABWOWXKW-UHFFFAOYSA-N 0.000 description 1
- 208000006558 Dental Calculus Diseases 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 241000282376 Panthera tigris Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- QZAGUQCNIBSWFN-UHFFFAOYSA-N [Br-].C(CCCCCCCCCCC)[NH2+]CCCCCCCCCCCCC Chemical compound [Br-].C(CCCCCCCCCCC)[NH2+]CCCCCCCCCCCCC QZAGUQCNIBSWFN-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 125000003636 chemical group Chemical group 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000008121 dextrose Substances 0.000 description 1
- AXTYOFUMVKNMLR-UHFFFAOYSA-N dioxobismuth Chemical compound O=[Bi]=O AXTYOFUMVKNMLR-UHFFFAOYSA-N 0.000 description 1
- 239000002305 electric material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229930182470 glycoside Natural products 0.000 description 1
- 150000002338 glycosides Chemical class 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012758 reinforcing additive Substances 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- UJMBCXLDXJUMFB-GLCFPVLVSA-K tartrazine Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)C1=NN(C=2C=CC(=CC=2)S([O-])(=O)=O)C(=O)C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 UJMBCXLDXJUMFB-GLCFPVLVSA-K 0.000 description 1
- 229960000943 tartrazine Drugs 0.000 description 1
- 235000012756 tartrazine Nutrition 0.000 description 1
- 239000004149 tartrazine Substances 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
- H01L21/3105—After-treatment
- H01L21/31051—Planarisation of the insulating layers
- H01L21/31053—Planarisation of the insulating layers involving a dielectric removal step
-
- 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]
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 Treatment Of Semiconductor (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
200815570 九、發明說明: 【發明所屬之技術領域】 本發明係關於一種撤光液’特別是關於一種含有混合磨料的 低介電材料拋光液。 【先前技術】 在積體電路製造中,互連技術的標準在提高,一層上面又沉 積一層,使得在襯底表面形成了不規則的形狀。現有^術中使用 的一種平坦化方法就是化學機械拋光(CMP),CMP製程就是使用 一種含磨料的混合物和拋光墊去拋光一石夕片表面。在典型的化學 機械拋光方法中,將襯底直接與旋轉拋光墊接觸,用二載重物^ 襯底背面施加壓力。在拋光期間,墊片和操作臺旋轉,同時在概 底背面保持向下的力,將磨料和化學活性溶液(通常稱為拋光液或 拋光漿料)塗於墊片上,該拋光液與正在拋光的薄膜發生化 開始進行拋光過程。 、在絕大多數CMP抛光液中,往往採用各種無機或有機顆粒 作為磨料,例如二氧化矽、氧化鋁、二氧化鍅、氧化鈽、 鐵、聚合物顆粒及/或其混合物等。由於這些無機或有機顆粒具 不同的粒徑、硬度、表面化學基團等特性,對各種拋光基材&往 表現出不同的拋光性能,尤其在對基材的拋光速率和 有很大的差異。 曰 、,因此、,在一些CMP拋光液中會採用兩種或兩種以上 料,以改善各種基材的拋絲率和調節他_麵比。比如 專利公告第6,_,獨號公開的抛光液主縣兩種不同粒徑的= 子的混合鑛齡,用關整和_金屬、阻擋層以及 石 的抱光速輪選擇比··第-種粒子触徑為5_5Gnm ;另_種教 的粒徑為50-l00nm。美國專利公告第6,896,591號公開的含有二 6 200815570 =料體系,主制於拋細化鎳基材 氣相氧化銘顆粒以及⑶二氧化賴粒。而美國專== I 5虎公開的採用兩種不同粒徑的二氧化石夕磨料體系, ίϊΐ 擒層Ta或通’並改善拋光過程中的雜和刮傷 於兩種不同粒徑的二氧化石夕磨料體系為:⑴第一種一氣 光液的财基礎上’還可以加人第三種顆粒。 成新的阻_抛綠,該第三麵粒魏脑齡。 y 【發明内容】 電材料抛 電路 包括 :裹!it,包括二氧化一、罐 於本發明中,該第二種磨料為二氧化石夕。 該掺銘二氧化石夕磨料的品質百分比濃度較佳地為〜抓。 10〜=。二氧化働的粒錄佳地是5〜麵;更钱是 0.5 〜15ί本發财’該第:種磨料的品質百分比濃度較佳地為 該第二種磨料的粒雜佳地是1G〜l〇0nm。 該拋光液的pH值較佳地為2〜12。 200815570 或表中種液還包括阻綱、氧化劑 '速率增助劑 其中’该阻餘劑較佳地是苯並三唾。 該氧化劑較佳地是過氧化氫。 該速率增助劑較佳地是有機羧酸、有 ί鱗:中=或多種補增助劑更
磷“的多種編夂銨、五硼酸錢、甘氨酸或乙二㈣叉 該表面活性劑包括陰離子表面活性劑、 ϊϊΞΐ面ί性和ΐ”子表ί活性劑;較佳地是: 二甲其、、臭化键=稀酸1聚乙一醇、十二烧基苯石黃酸納、十二烧基 一τ基溴化鈿或四丁基氫氧化銨中的一種或多種。 純繩光液可用缝光包含金屬、_層、二氧化石夕 矛低;I電材料結構的積體電路。 敕⑽雜進步效果在於··本發_減液可以較佳地調 f,;丨電村料氧化石夕_)與TEOS的拋光速率的同時,防止金屬 ίίίΪ中產生的局部和整體腐飿,提高產品良率。而且能應用 積體ΪΪΪ金屬、換竣二氧切_和二氧頻刪)結構的 關於本發明之優點與精神可以藉由以下的發明詳述得到進一 步的瞭解。 【實施方式】 為達到上述有關本發明之範疇,所採用之技術手段及 ,、餘功效,茲舉數個較佳實施例加以說明如下: 8 200815570 實施例1 : 拋光液1 :摻鋁二氧化矽(45nm)5%,氧化鋁包裹二氧 化矽(20nm)5%,酒石酸 0 2%,btao.2。/。,h2〇2〇j%, ρΠ=3 ; 拋光液2 :摻鋁二氧化矽(45nm)5%,氧化錘包裹二氧 化矽(20nm)5%,酒石酸 0.2%,btAO.2%,H2O20 3%, pH-2 ;
拋光液3 ·掺銘二氧化梦(45nm)5%,二氧化碎 (70nm)5%,酒石酸 0.2%,BTA0.2%,Η2Ο20·3%,PH二3 ; 拋光液4 :摻鋁二氧化矽(45nm)5%,氣相氧化鋁(初 始粒徑 15nm)5%,酒石酸 0.2%,BTA0.2%,H2〇20.3%, pH=3。 拋光材料:BD材料;抛光條件:i.5pSi,拋光盤轉速 70rpm,拋光墊 Politex,抛光液流速 looml/min,Logitech PM5 Polisher 〇 結果如圖一所示:本發明採用摻鋁二氧化矽與不同的 辅助磨料組成混合磨料體系後,其拋光液可以較佳地調節 和控制低介電材料的拋光速率以及選擇比。 實施例2 : 拋光液5(1):摻鋁二氧化矽(20nm)5%,二氧化石夕 (70nm>5%,酒石酸 0·2%,ΒΤΑ0·2%,Η2Ο20·3%,pH=3 ; 拋光液5(2):摻鋁二氧化矽(45nm)5%,二氧化石夕 (70nm)5%,酒石酸 0·2%,ΒΤΑ0·2%,Η2Ο20·3%,pH=3 ; 拋光液5(3):摻鋁二氧化矽(80nm)5%,二氧化石夕 9 200815570 (70nm)5%,酒石酸 0·2%,ΒΤΑ0·2%,Η2020·3%,pH=3。 拋光液6(1):摻鋁二氧化矽(45nm)5%,二氧化矽 (20nm)5%,酒石酸 0.2%,BTA0.2%,Η2Ο20·3%,pH二3 ; 拋光液6(2):摻鋁二氧化矽(45nm)5%,二氧化矽 (70nm)5%,酒石酸 0·2%,ΒΤΑ0·2%,Η2Ο20·3%,pH=3 ; 拋光液6(3):摻鋁二氧化矽(45nm)5%,二氧化矽 (120nm)5%,酒石酸 0·2%,BTA0.2%,Η202〇·3%, • ρΗ=3 〇 抛光材料· BD材料;拋光條件:i.5psi,撤光盤轉速 70rpm ’ 拋光墊 Politex,拋光液流速 looml/min,Logitech PM5 Polisher ° 結果如圖二、圖三所示:20〜8〇nm的摻鋁二氧化矽 磨^和20〜140nm的二氧化矽磨料都適合於本發明,而且 隨著摻鋁二氧化矽磨料粒徑的增大,拋光速率上升,因此 ,於〃80nm的摻鋁二氧化矽磨料也適合於本發明。但是隨 著二氧化矽磨料粒徑的增大,TEOS反而下降,因此大= 120nm的二氧化石夕磨料粒徑不適合本發明。 實施例3 : 拋光液7(1):摻鋁二氧化矽(45nm)〇5%,二氧化 (100nm)7%, pH=3 ; 拋光液7(2):摻鋁二氧化矽(45nm)7%,二氡化 (10—0腿)7% ’ 酒石酸 〇 2%,bTA〇.2%,H2〇2〇 3%, 200815570 » i 拋光液7(3):摻鋁二氧化矽(80nm)15%,二氧化矽 (100nm)7%,酒石酸 0.2%,ΒΤΑ0·2%,Η2Ο20·3%, ρΗ=3 ° 拋光液8(1):摻鋁二氧化矽(45nm)7%,二氧化矽 (70nm)0.5%,酒石酸 0.2%,BTA0.2%,Η2Ο20·3%, ρΗ=3 ; 拋光液8(2):摻鋁二氧化矽(45nm)7%,二氧化矽 (100nm)7%,酒石酸 0·2%,BTA0.2%,Η2Ο20·3%, φ pH二3; 拋光液8(3):摻鋁二氧化矽(80nm)7%,二氧化矽 (100nm)15%,酒石酸 0.2%,BTA0.2%,Η2020·3〇/〇, pH-3 〇 拋光液8(4):摻鋁二氧化矽(45nm)l%,二氧化矽 (100nm)9%,酒石酸 0.2%,BTA0.2%,Η2Ο20·3%, ρΗ=3 ; 拋光液8(5):摻鋁二氧化矽(45nm)5%,二氧化矽 _ (100nm)5%,酒石酸 0.2%,BTA0.2%,Η2Ο20·3%, ρΗ=3 ; 拋光液8(6):摻鋁二氧化矽(80nm)9%,二氧化矽 (100nm)l%,酒石酸 0.2%,ΒΤΑ0·2%,Η2Ο20·3%, ρΗ=3 〇 抛光材料:BD材料;拋光條件:1.5psi,拋光盤轉速 70rpm,抛光墊?〇1加乂,拋光液流速1〇〇1111/111丨11,1^(^如(;11 PM5 Polisher 〇 結果如圖四、圖五、圖六所示·當換銘二氧化秒的濃 200815570 ^為0.5%〜15〇/〇之間或二氧化石夕的濃度為〇 5%〜i5%之間 柃,本發明的拋光液可以顯著增加低介電材料BD 化石夕TEOS的拋光速率。同時在上述濃度範圍内,通過改 變摻銘二氧化;^和二氧化發之間的濃度比,本發明的抛光 液也可以調節和控制低介電材料BD與二氧化矽te〇s的 拋光速率和選擇比。 實施例4 :
一 ^拋光液9(1):拋光液9(2):摻鋁二氧化矽(45nm)5%, 一氧化發(70nm)5% ’ 酒石酸 0.2%,BTA0.2%, Η2〇2〇·3%,pH=2 ; 拋光液9(2):摻鋁二氧化矽(45nm)5%,二氧化石夕 (70nm)5%,酒石酸 〇·2%,BTA0.2%,Η2〇2〇·3%,ph=3 ; 抛光液9(3) ·摻紹二氧化石夕(45nm)5%,二氧化石夕 (70nm)5% ’ 酒石酸 〇·2%,BTA0.2%,Η2〇2〇·3%,pH=7 ; 撖光液9(4) ··摻鋁二氧化矽(45nm)5%,二氧化石夕 (70nm)5%,酒石酸 0·2%,ΒΤΑ0·2%,Η9〇9〇·3%, ρΗ=10 ; 拋光液9(5):摻鋁二氧化矽(45nm)5%,二氧化矽 (70nm)5%,酒石酸 0.2%,BTA0.2%,H9O90.3%, pH=12 〇 拋光材料·· BD材料;抛光條件:i.5psi,撤光盤轉速 70rpm ’ 抛光塾 Politex,抛光液流速 l〇〇xxxi/min,Logitech PM5 Polisher 〇 結果如圖七所示:當拋光液的pH值為2〜7時,通過 改變本發明的拋光液的pH值可以較佳地調節和控制低介 12 200815570 « 1 電材料的拋光速率。 實施例5 : 拋光液10 :摻鋁二氧化矽(45nm)5%,二氧化矽 (70nm)5%,草酸 0·2%,BTA0.2%,Η2〇2〇·3%,pH二3 ; 樾光液11 ··掺紹二氧化石夕(45nm)5%,二氧化石夕 (70nm)5%,丁二酸 0.2%,JBTA0.2%,Η2Ο20·3%,pH二3 ; 拋光液12 :摻鋁二氧化矽(45nm)5%,二氧化矽 (70nm)5%,正丁胺 0·2%,ΒΤΑ0·2%,Η2Ο20·3%,pH二3 ; 拋光液13 :摻鋁二氧化矽(45nm)5%,二氧化矽 (70nm)5%,酒石酸銨 0.2%,BTA0.2%,H2O20.3%, pH二3 ; 拋光液14 ·•掺銘二氧化石夕(45nm)5%,二氧化石夕 (70nm)5%,五硼酸銨 0.2%,BTA0.2%,H2O20.3%, ρΗ=3 ; 拋光液15 :摻鋁二氧化矽(45nm)5%,二氧化矽 (70nm)5%,甘氨酸 0.2%,ΒΤΑ0·2%,Η2Ο20·3%,pH二3 ; 拋光液16 :掺銘二氧化石夕(45nm)5%,二氧化石夕 (70nm)5%,乙二胺四曱叉麟酸 0.2%,BTA0.2%, Η2020·3%,pH二3 〇 拋光液17 :掺銘二氧化石夕(45nm)5%,二氧化石夕 (70nm)5%,酒石酸 0.2%,BTA0.2%,Η2020·3%,聚乙二 醇(PEG)(分子量為 200)0.2%,ρΗ=3 ; 拋光液18 :摻鋁二氧化矽(45nm)5%,二氧化矽 (70nm)5%,酒石酸 0.2%,BTA0.2%,Η2020·3%,右旋糖 13 200815570 * » 苷(分子量為 20000)0.2%,pH=3 ; 拋光液19 :摻鋁二氧化矽(45nm)5%,二氧化矽 (70nm)5%,酒石酸 0.2%,BTA0.2%,Ή2〇2〇·3% ’ ΒΥΚ1540.2%,pH二3 ; 拋光液20 :掺鋁二氧化矽(45nm)5%,二氧化矽 (70nm)5%,酒石薇 0.2%,BTA0.2%,Η2Ο20·3%,聚丙烯 醢胺(分子量 Mw=3000000)0.2%,pH二3 ; φ 拋光液21 ··摻鋁二氧化矽(45nm)5%,二氧化矽 (70nm)5%,酒石酸 0.2%,BTA0.2%,Η2Ο20·3%,四丁基 氫氧化銨0.07%,ρΗ=3 ; 拋光液22 :摻鋁二氧化矽(45nm)5%,二氧化矽 (70nm)5%,酒石酸 0.2%,BTA0.2%,H2020.3%,十二烧 基三曱基溴化銨0.1%,pH二3 ; 拋光液23 :摻鋁二氧化矽(45nm)5%,二氧化矽 (70nm)5% ’ 酒石酸 〇·2%,BTA0.2%,Η2Ο20·3%,十二烧 0 基苯續酸鈉0.1%,ρΗ=3 ; 拋光材料:BD材料;拋光條件:lpsi,拋光盤轉速 70rpm,拋光墊P〇litex ’拋光液流速1〇〇ml/min,[叩泡吐 PM5 Polisher 〇 結果如圖 固九所示 土古 ----------通過改變本發明的拋光液中 ,率增助劑及/絲面活_可錢 制低介電材料的拋光速率。 1 p 本發明所使用的原料和試劑均為市f產品。 藉由以上較佳具體實施例之註十 ⑺之序述’係希望能更加清楚描述本 200815570 =之特徵與精神,而並非以上述 本發明之範私以限制。相反地,其目例來對 、相等性的女排於本發明所欲申請之專利範圍的範疇内。因 匕’本發明所申請之專利範圍的範疇應該根據上述的說明作最寬 廣的解釋,以致使其涵蓋所有可能的改變以及具相等性的安排見 15
響圖; 200815570
4 I 【圖式簡單說明】 圖為掺紹—乳化石夕及其混合磨料體系的抛光速率圖; I圖二為_二氧切的粒㈣低介電材料的減速率影響 圖三為混合雜的祕雜介電材料的拋光速率影響圖,· 圖四為不同用量的混合磨料的拋光速率圖; 圖五為不同用量的混合磨料的拋光速率圖; 圖六為不同用量的混合磨料的拖光速率圖; 圖七為本發明的拋光液的pH值對低介電材料的拋光速率影 ^圖八為本發明的拋光液的混合磨料與速率增助劑的組合性能 影響圖; 圖九為本發明的抛光液的混合磨料與表面活性劑的組人卜fc 影響圖;以及…% 圖十為本發明拋光液的拋光材料結構示意圖。 【主要元件符號說明】 益 16
Claims (1)
- 200815570 十、申請專利範圍: 1、 一種含有混合磨料的低介電材料拋光液,該拋光液包括兩種或 兩種以上的抛光磨料,其特徵在於:其中一種磨料為摻銘二氧 化矽二第二種磨料包括二氧化矽、氧化鋁、鋁包裹二氧化矽或 鉛包裹二氧化矽中的一種或多種。 2、如申請專利範圍第1項所述之拋光液,其特徵在於:該第二種廢 料為二氧化矽。如申請專利範圍第2項所述之拋光液,其特徵在於:該摻鋁二氧 化矽磨料的品質百分比濃度為〇.5〜15%。 4、如申請專利範圍第2項所述之拋光液,其特徵在於:該摻鋁二氧 化硬磨料的粒徑是5〜5〇〇nm。 如申请專利範圍第4項所述之拋光液,其特徵在於··該摻銘二氧 化矽磨料的粒徑是1〇〜1〇〇nm。 6、 如申請專利範圍第2項所述之拋光液,其特徵在於:該第二種磨 料的品質百分比濃度為0.5〜15%。 7、 如申請專利範圍第2項所述之拋光液,其特徵在於··該第二廢 料的粒徑是10〜l〇0nm。 足 8、如申請專利範圍第1至7項任一項所述之抛光液,其特徵在於: 該拋光液的pH值為2〜12。 9、如申請專利範圍第1至8項任一項所述之拋光液,其特徵在於: 該拋光液還包括阻蝕劑、氧化劑、速率增助劑或&面^判, 的一種或多種。 片 10、 如申請專利範圍第9項所述之拋光液,其特徵在於: 該阻蝕劑是 17 200815570 1U Ξίΐί利範圍第9項所述之抛光液’其特徵在於:該氧化劑是 12、 如=請專利範圍第9項所述之拋光液,其特徵在於··該速率捭 劑是有機羧酸、有機羧酸鹽、氨基酸或有機磷酸中的一種』/ 種。 4夕 13、 如申,專利範圍第12項所述之拋光液,其特徵在於:該速率辦 1劑疋草酸、酒石酸、丁二酸、正丁胺、酒石酸銨、五硼酸 銨、甘氨酸或乙二胺四甲叉填酸中的一種或多種。 夂 φ 14、 如申請專利範圍第9項所述之拋光液,其特徵在於:該表面活性 劑包括陰離子表面活性劑、陽離子表面活性劑、非離子表面活 {'生以及兩性離子表面活性劑。 15、 如申請專利範圍第14項所述之拋光液,其特徵在於:該表面活 性劑是聚丙烯醯胺、右旋糖苷、聚丙烯酸、聚乙二醇、十二烧 基苯磺酸鈉、十二烷基三甲基溴化銨或四丁基氫氧化銨中一種 或多種。 16、 如申睛專利範圍第2項所述之抛光液’其特徵在於:該抛光液用 * 於拋光包含金屬、阻擋層、二氧化矽以及低介電材料結構的積 體電路。 18
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US9487674B2 (en) * | 2011-09-07 | 2016-11-08 | Basf Se | Chemical mechanical polishing (CMP) composition comprising a glycoside |
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CN103952083B (zh) * | 2014-04-09 | 2016-04-27 | 贵州亿科新材料有限公司 | 一种硬质高岭土生产抛光粉的方法 |
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