JP5642962B2 - Cmp用途における調節可能な選択性スラリー - Google Patents
Cmp用途における調節可能な選択性スラリー Download PDFInfo
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- JP5642962B2 JP5642962B2 JP2009518144A JP2009518144A JP5642962B2 JP 5642962 B2 JP5642962 B2 JP 5642962B2 JP 2009518144 A JP2009518144 A JP 2009518144A JP 2009518144 A JP2009518144 A JP 2009518144A JP 5642962 B2 JP5642962 B2 JP 5642962B2
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- 239000002002 slurry Substances 0.000 title description 4
- 238000005498 polishing Methods 0.000 claims description 201
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 61
- 238000000034 method Methods 0.000 claims description 51
- 239000003054 catalyst Substances 0.000 claims description 32
- 229910052751 metal Inorganic materials 0.000 claims description 29
- 239000002184 metal Substances 0.000 claims description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 26
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- 239000007788 liquid Substances 0.000 claims description 23
- 239000000377 silicon dioxide Substances 0.000 claims description 22
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 18
- VDZOOKBUILJEDG-UHFFFAOYSA-M tetrabutylammonium hydroxide Chemical group [OH-].CCCC[N+](CCCC)(CCCC)CCCC VDZOOKBUILJEDG-UHFFFAOYSA-M 0.000 claims description 17
- 239000003381 stabilizer Substances 0.000 claims description 16
- 229910052742 iron Inorganic materials 0.000 claims description 13
- JFDZBHWFFUWGJE-UHFFFAOYSA-N benzonitrile Chemical compound N#CC1=CC=CC=C1 JFDZBHWFFUWGJE-UHFFFAOYSA-N 0.000 claims description 12
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- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical group [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 10
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- 239000007864 aqueous solution Substances 0.000 description 3
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 description 3
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- KYQCOXFCLRTKLS-UHFFFAOYSA-N Pyrazine Chemical compound C1=CN=CC=N1 KYQCOXFCLRTKLS-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
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- 239000003082 abrasive agent Substances 0.000 description 2
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- 239000003989 dielectric material Substances 0.000 description 2
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 2
- ICIWUVCWSCSTAQ-UHFFFAOYSA-M iodate Chemical compound [O-]I(=O)=O ICIWUVCWSCSTAQ-UHFFFAOYSA-M 0.000 description 2
- 235000000396 iron Nutrition 0.000 description 2
- XKBGEWXEAPTVCK-UHFFFAOYSA-M methyltrioctylammonium chloride Chemical compound [Cl-].CCCCCCCC[N+](C)(CCCCCCCC)CCCCCCCC XKBGEWXEAPTVCK-UHFFFAOYSA-M 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 125000000864 peroxy group Chemical group O(O*)* 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- XSCHRSMBECNVNS-UHFFFAOYSA-N quinoxaline Chemical compound N1=CC=NC2=CC=CC=C21 XSCHRSMBECNVNS-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 2
- 238000012876 topography Methods 0.000 description 2
- IAEGWXHKWJGQAZ-UHFFFAOYSA-N trimethylpyrazine Chemical compound CC1=CN=C(C)C(C)=N1 IAEGWXHKWJGQAZ-UHFFFAOYSA-N 0.000 description 2
- 235000012431 wafers Nutrition 0.000 description 2
- MTCFGRXMJLQNBG-REOHCLBHSA-N (2S)-2-Amino-3-hydroxypropansäure Chemical compound OC[C@H](N)C(O)=O MTCFGRXMJLQNBG-REOHCLBHSA-N 0.000 description 1
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- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 1
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- GUQMDNQYMMRJPY-UHFFFAOYSA-N 4,4-dimethyl-1,3-oxazolidine Chemical compound CC1(C)COCN1 GUQMDNQYMMRJPY-UHFFFAOYSA-N 0.000 description 1
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- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
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- PBMFSQRYOILNGV-UHFFFAOYSA-N pyridazine Chemical compound C1=CC=NN=C1 PBMFSQRYOILNGV-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 description 1
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- 230000009897 systematic effect Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- OUYCCCASQSFEME-UHFFFAOYSA-N tyrosine Natural products OC(=O)C(N)CC1=CC=C(O)C=C1 OUYCCCASQSFEME-UHFFFAOYSA-N 0.000 description 1
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- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
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- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
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Description
この実施例は本発明の方法により達成された調節可能な選択性を示す。
選択性=1.4723−0.0131x%酸化物構成要素 (I)
この実施例は独創的な方法によって達成された調節可能な選択性について示す。
タングステン除去速度(Å/分)=1029+236[触媒濃度(ppm)]−612.7[酵素濃度(ppm)]2 (II)
酸化物除去速度(Å/分)=534+463 [研磨材濃度(重量%)] (III)
本発明はまた、以下の内容を包含する。
(1)
少なくとも第一層および第二層を有する基板を研磨加工するための化学機械研磨組成物の製造方法であって、
(a)第二層と比較して第一層に対する第一の選択性を有する研磨材を含む第一の化学機械研磨組成物を提供すること、
(b)第二層と比較して第一層に対する第二の選択性を有する研磨材を含む第二の化学機械研磨組成物を提供すること(第二の化学機械研磨組成物が第一の化学機械研磨組成物の存在下で安定しており、第一および第二の選択性は異なる)、および
(c)第二層と比較して第一層に対する最終的な選択性を達成する比率で第一および第二の化学機械研磨組成物を混合すること、
を含む、方法。
(2)
前記第一層が金属層であり、前記第二層が誘電体層である、項目1に記載の方法。
(3)
前記第一層がタングステンを含む、項目2に記載の方法。
(4)
前記第二層が酸化ケイ素、酸窒化ケイ素またはドープした酸化ケイ素を含む、項目2に記載の方法。
(5)
前記第二層と比較して前記第一層に対する第一の選択性が25:1〜1:1である、項目1に記載の方法。
(6)
前記第二層と比較して前記第一層に対する第二の選択性が0.04:1〜1:1である、項目1に記載の方法。
(7)
前記第一の化学機械研磨組成物が、
(a)複数の酸化状態を有する無機鉄化合物および有機鉄化合物よりなる群から選択される鉄触媒、
(b)リン酸、フタル酸、クエン酸、アジピン酸、シュウ酸、マロン酸、ベンゾニトリルおよびそれらの混合物よりなる群から選択される少なくとも1つの安定化剤、
(c)水酸化テトラアルキルアンモニウムおよびアミノ酸よりなる群から選択される金属エッチング阻害剤、および
(d)液体キャリア
をさらに含む、項目1に記載の方法。
(8)
前記鉄触媒が硝酸第二鉄であり、前記安定化剤がマロン酸であり、前記阻害剤が水酸化テトラブチルアンモニウムであり、前記研磨材がシリカである、項目7に記載の方法。
(9)
前記第二の化学機械研磨組成物が水酸化テトラアルキルアンモニウムおよび液体キャリアをさらに含む、項目1に記載の方法。
(10)
前記水酸化テトラアルキルアンモニウムが水酸化テトラブチルアンモニウムである、項目9に記載の方法。
(11)
前記研磨材がシリカである、項目9に記載の方法。
(12)
(d)前記第一および第二の化学機械研磨組成物の混合物に酸化剤を添加することをさらに含む、項目1に記載の方法。
(13)
前記酸化剤が過酸化水素である、項目12に記載の方法。
(14)
基板を化学機械的に研磨加工する方法であって、
(a)少なくとも第一層および第二層を有する基板を提供すること、
(b)(i)第二層と比較して第一層に対する第一の選択性を有する研磨材を含む第一の化学機械研磨組成物を提供すること、
(ii)第二層と比較して第一層に対する第二の選択性を有する研磨材を含む第二の化学機械研磨組成物を提供し、該第二の化学機械研磨組成物が第一の化学機械研磨組成物の存在下で安定しており、第一および第二の選択性は異なり、
(iii)第一および第二の化学機械研磨組成物を、第二層と比較して第一層に対する最終的な選択性を有する最終的な化学機械研磨組成物を達成する比率で混合する工程を含む、最終的な化学機械研磨組成物を製造すること、
(c)基板を最終的な化学機械研磨組成物と接触させること、
(d)基板と研磨パッドの間に最終的な化学機械研磨組成物を介在させ、基板に対して研磨パッドを移動させること、および
(e)基板の少なくとも一部を磨耗させて基板を研磨すること、
を含む、方法。
(15)
前記第一層が金属層であり、前記第二層が誘電体層である、項目14に記載の方法。
(16)
前記第一層がタングステンを含む、項目15に記載の方法。
(17)
前記第二層が酸化ケイ素を含む、項目15に記載の方法。
(18)
前記第二層と比較して前記第一層に対する第一の選択性が25:1〜1:1である、項目14に記載の方法。
(19)
前記第二層と比較して前記第一層に対する第二の選択性が0.04:1〜1:1である、項目14に記載の方法。
(20)
前記第一の化学機械研磨組成物が、
(a)複数の酸化状態を有する無機鉄化合物および有機鉄化合物よりなる群から選択される鉄触媒、
(b)リン酸、フタル酸、クエン酸、アジピン酸、シュウ酸、マロン酸、ベンゾニトリルおよびそれらの混合物よりなる群から選択された少なくとも1つの安定剤、
(c)水酸化テトラアルキルアンモニウムおよびアミノ酸よりなる群から選択された金属エッチング阻害剤、および
(d)液体キャリア
をさらに含む、項目14に記載の方法。
(21)
前記鉄触媒が硝酸第二鉄であり、前記安定化剤がマロン酸であり、前記阻害剤が水酸化テトラブチルアンモニウムであり、および前記研磨材がシリカである、項目20に記載の方法。
(22)
前記第二の化学機械研磨組成物が水酸化テトラアルキルアンモニウムおよび液体キャリアをさらに含む、項目14に記載の方法。
(23)
前記水酸化テトラアルキルアンモニウムが水酸化テトラブチルアンモニウムである、項目22に記載の方法。
(24)
前記研磨材がシリカである、項目22に記載の方法。
(25)
(b)(iv)前記第一および第二の化学機械研磨組成物の混合物に酸化剤を添加することをさらに含む、項目14に記載の方法。
(26)
前記酸化剤が過酸化水素である、項目25に記載の方法。
Claims (7)
- 少なくとも第一層および第二層を有する基板を化学機械的に研磨加工する方法であって、前記第一層および前記第二層が、化学機械研磨組成物と接触しておらず、
(a)第二層と比較して第一層に対する第一の選択性を有する、研磨材を含む第一の化学機械研磨組成物を提供すること、
(b)第二層と比較して第一層に対する第二の選択性を有する、研磨材を含む第二の化学機械研磨組成物を提供すること(第二の化学機械研磨組成物が第一の化学機械研磨組成物の存在下で安定しており、第一および第二の選択性は異なる)、
(c)第二層と比較して第一層に対する最終的な選択性を達成する比率で第一および第二の化学機械研磨組成物を混合して最終的な化学機械研磨組成物を調製すること、
(d)前記基板を、前記最終的な化学機械研磨組成物に接触させること、
(e)前記基板と研磨パッドの間に前記最終的な化学機械研磨組成物を介在させ、前記基板に対して相対的に前記研磨パッドを移動させること、および
(f)前記基板の前記第一層および前記第二層の少なくとも一部を磨耗させて前記基板を研磨すること、
を含み、
前記第一の化学機械研磨組成物が、
(a)複数の酸化状態を有する無機鉄化合物および有機鉄化合物よりなる群から選択される鉄触媒、
(b)リン酸、フタル酸、クエン酸、アジピン酸、シュウ酸、マロン酸、ベンゾニトリルおよびそれらの混合物よりなる群から選択された少なくとも1つの安定剤、
(c)水酸化テトラアルキルアンモニウムおよびアミノ酸よりなる群から選択された金属エッチング阻害剤、および
(d)液体キャリア
をさらに含み、
前記第二の化学機械研摩組成物が、金属エッチング阻害剤および液体キャリアをさらに含み、かつ、
前記第一層が金属層であり、前記第二層が誘電体層である、
方法。 - (c')前記最終的な化学機械研磨組成物に酸化剤を添加することをさらに含む、請求項1に記載の方法。
- 前記第二層と比較して前記第一層に対する第一の選択性が25:1〜1:1である、請求項1または2に記載の方法。
- 前記第二層と比較して前記第一層に対する第二の選択性が0.04:1〜1:1である、請求項1〜3のいずれか一項に記載の方法。
- 前記鉄触媒が硝酸第二鉄であり、前記安定化剤がマロン酸であり、前記阻害剤が水酸化テトラブチルアンモニウムであり、および前記研磨材がシリカである、請求項1〜4のいずれか一項に記載の方法。
- 前記第二の化学機械研磨組成物の金属エッチング阻害剤が水酸化テトラアルキルアンモニウムである、請求項1〜5のいずれか一項に記載の方法。
- 前記研磨材がシリカである、請求項1〜6のいずれか一項に記載の方法。
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US8480920B2 (en) * | 2009-04-02 | 2013-07-09 | Jsr Corporation | Chemical mechanical polishing aqueous dispersion, method of preparing the same, chemical mechanical polishing aqueous dispersion preparation kit, and chemical mechanical polishing method |
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SG173331A1 (en) | 2011-08-29 |
JP2009543336A (ja) | 2009-12-03 |
EP2038361A4 (en) | 2011-04-20 |
WO2008005160A1 (en) | 2008-01-10 |
KR20090023640A (ko) | 2009-03-05 |
CN101479359A (zh) | 2009-07-08 |
KR101252895B1 (ko) | 2013-04-09 |
CN101479359B (zh) | 2012-12-26 |
IL195697A (en) | 2012-12-31 |
IL195697A0 (en) | 2009-09-01 |
EP2038361A1 (en) | 2009-03-25 |
US7294576B1 (en) | 2007-11-13 |
JP5986146B2 (ja) | 2016-09-06 |
JP2014205851A (ja) | 2014-10-30 |
TW200811277A (en) | 2008-03-01 |
TWI354697B (en) | 2011-12-21 |
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