JP2014507799A - 金属を不動態化する化学機械研磨用組成物及び方法 - Google Patents
金属を不動態化する化学機械研磨用組成物及び方法 Download PDFInfo
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- JP2014507799A JP2014507799A JP2013549488A JP2013549488A JP2014507799A JP 2014507799 A JP2014507799 A JP 2014507799A JP 2013549488 A JP2013549488 A JP 2013549488A JP 2013549488 A JP2013549488 A JP 2013549488A JP 2014507799 A JP2014507799 A JP 2014507799A
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- 239000000203 mixture Substances 0.000 title claims abstract description 147
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 88
- 239000002184 metal Substances 0.000 title claims abstract description 88
- 238000005498 polishing Methods 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000000126 substance Substances 0.000 title claims abstract description 22
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- 229910052802 copper Inorganic materials 0.000 claims abstract description 56
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000000758 substrate Substances 0.000 claims abstract description 39
- 239000008139 complexing agent Substances 0.000 claims abstract description 32
- 229910052709 silver Inorganic materials 0.000 claims abstract description 31
- 239000004332 silver Substances 0.000 claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- 239000008365 aqueous carrier Substances 0.000 claims abstract description 12
- 239000010419 fine particle Substances 0.000 claims abstract 4
- HBROZNQEVUILML-UHFFFAOYSA-N salicylhydroxamic acid Chemical compound ONC(=O)C1=CC=CC=C1O HBROZNQEVUILML-UHFFFAOYSA-N 0.000 claims description 50
- -1 nitrogen heteroaromatic compound Chemical class 0.000 claims description 46
- 150000003839 salts Chemical class 0.000 claims description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 32
- 239000002253 acid Substances 0.000 claims description 31
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims description 25
- 150000001875 compounds Chemical class 0.000 claims description 25
- 125000000217 alkyl group Chemical group 0.000 claims description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims description 21
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 19
- 239000012964 benzotriazole Substances 0.000 claims description 19
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- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 13
- 239000007800 oxidant agent Substances 0.000 claims description 13
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 12
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- 239000010452 phosphate Substances 0.000 claims description 10
- ULRPISSMEBPJLN-UHFFFAOYSA-N 2h-tetrazol-5-amine Chemical compound NC1=NN=NN1 ULRPISSMEBPJLN-UHFFFAOYSA-N 0.000 claims description 8
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- FSYKKLYZXJSNPZ-UHFFFAOYSA-N N-methylaminoacetic acid Natural products C[NH2+]CC([O-])=O FSYKKLYZXJSNPZ-UHFFFAOYSA-N 0.000 claims description 3
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- 239000002002 slurry Substances 0.000 description 18
- BACYUWVYYTXETD-UHFFFAOYSA-N N-Lauroylsarcosine Chemical compound CCCCCCCCCCCC(=O)N(C)CC(O)=O BACYUWVYYTXETD-UHFFFAOYSA-N 0.000 description 14
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- 229910052783 alkali metal Inorganic materials 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 229920001223 polyethylene glycol Polymers 0.000 description 6
- NEAQRZUHTPSBBM-UHFFFAOYSA-N 2-hydroxy-3,3-dimethyl-7-nitro-4h-isoquinolin-1-one Chemical compound C1=C([N+]([O-])=O)C=C2C(=O)N(O)C(C)(C)CC2=C1 NEAQRZUHTPSBBM-UHFFFAOYSA-N 0.000 description 5
- 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 5
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- 125000001424 substituent group Chemical group 0.000 description 5
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- 230000000694 effects Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 125000004430 oxygen atom Chemical group O* 0.000 description 4
- LLYCMZGLHLKPPU-UHFFFAOYSA-M perbromate Chemical compound [O-]Br(=O)(=O)=O LLYCMZGLHLKPPU-UHFFFAOYSA-M 0.000 description 4
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 125000002843 carboxylic acid group Chemical group 0.000 description 3
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- 229910021641 deionized water Inorganic materials 0.000 description 3
- 125000000623 heterocyclic group Chemical group 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- VKZRWSNIWNFCIQ-WDSKDSINSA-N (2s)-2-[2-[[(1s)-1,2-dicarboxyethyl]amino]ethylamino]butanedioic acid Chemical compound OC(=O)C[C@@H](C(O)=O)NCCN[C@H](C(O)=O)CC(O)=O VKZRWSNIWNFCIQ-WDSKDSINSA-N 0.000 description 2
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- PAYRUJLWNCNPSJ-UHFFFAOYSA-N N-phenyl amine Natural products NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 125000005013 aryl ether group Chemical group 0.000 description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 2
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 2
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- OUDSFQBUEBFSPS-UHFFFAOYSA-N ethylenediaminetriacetic acid Chemical compound OC(=O)CNCCN(CC(O)=O)CC(O)=O OUDSFQBUEBFSPS-UHFFFAOYSA-N 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
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- 150000002500 ions Chemical class 0.000 description 2
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- 150000004713 phosphodiesters Chemical class 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
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- PQHYOGIRXOKOEJ-UHFFFAOYSA-N 2-(1,2-dicarboxyethylamino)butanedioic acid Chemical compound OC(=O)CC(C(O)=O)NC(C(O)=O)CC(O)=O PQHYOGIRXOKOEJ-UHFFFAOYSA-N 0.000 description 1
- 125000002373 5 membered heterocyclic group Chemical group 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
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- 239000007962 solid dispersion Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 150000003852 triazoles Chemical class 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
- AQLJVWUFPCUVLO-UHFFFAOYSA-N urea hydrogen peroxide Chemical compound OO.NC(N)=O AQLJVWUFPCUVLO-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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Abstract
Description
5〜7のpHを有し、50〜500ppmのサリチルヒドロキサム酸(SHA;第一の膜形成性金属錯化剤)、1質量パーセントのイミノ二酢酸(IDA;金属キレート助剤)、及び0.1〜1質量パーセントのコロイダルシリカ(平均粒子サイズ80nm)を含むCMP組成物を利用して、0.8質量%の過酸化水素の存在下で、直径4インチの銅被覆ウェハーを研磨した。それぞれの組成物のSHA、研磨剤、及びpHの量を表1に提供する。ウェハーを、Logitech Model II CDPポリッシャー(Logitech社、Glasgow、英国)上で、以下の操作条件下で研磨した:D100の研磨パッド、毎分85回転(rpm)の圧盤速度、93rpmのキャリア速度、1平方インチにつき1ポンド(psi)(6.9kPa)、又は3psi(20.7kPa)のダウンフォース、及び毎分120ミリリットル(mL/min)のスラリー流量。
[例2:N―ラウロイルサルコシン(NLS)、及びイミノ二酢酸(IDA)を含むCMP組成物の評価]
[例3:ダウンフォースが除去速度に及ぼす影響]
[例4:SHA及びATAを含む組成物の評価]
[例5:SHA及びNPPOPを含む組成物の評価]
[例6:銀上におけるSHA及びNPPOPを含む組成物の評価]
Claims (23)
- 銅及び/又は銀を含む基材の研磨に適する化学機械研磨(CMP)組成物であって、該組成物は:
(a)0.01〜10質量パーセントの微粒子研磨剤と;
(b) 0.001〜1質量パーセントの第一の膜形成性金属錯化剤であって、下記式(I):A―X―Y―OH、これらの塩、又はこれらの部分的に中和された形態の化合物を含み、ここでAは―N(R1)―C(=O)―R2、又は―C(=O)―NH―OHであり;Xが―C(R3)(R4)―で、かつYが―C(=O)―であるか、又はX及びYが共に、式(I)においてA及びOH基が互いに1,2(若しくは「オルト」)の関係に位置するアリール基を形成し;R1はH、置換したC1〜C4のアルキル、又は非置換のC1〜C4のアルキルであり;R2は、置換したC8〜C20のアルキル、又は非置換のC8〜C20のアルキルであり;並びに、R3及びR4はそれぞれ独立にH、置換したC1〜C4のアルキル、又は非置換のC1〜C4のアルキルである、第一の膜形成性金属錯化剤と;
(c)0.005〜0.5質量パーセントの第二の膜形成性金属不動態化剤であって、下記式(II):Z―X2(Y2R5)(Y3R6)、これらの塩、及びこれらの部分的に中和した形態の化合物を含み;ここでZはNH2、又はOHであり;X2はP=O、又はCであり;Y2及びY3はそれぞれ独立にN、NH、又はOであり;R5及びR6はそれぞれ独立に、R7―(OCH2CH2)n―であることができ、又はY2及びY3がそれぞれ独立にN、若しくはNHである場合、R5及びR6はそれぞれ独立にN、NH若しくはCHであることができ、かつY2及びY3は共にX2、Y2、及びY3を有する五員環の複素環を形成し;それぞれのR7は独立にH、C1〜C20のアルキル、フェニル、又はC1〜C20のアルキルで置換したフェニルであり;並びに「n」は2〜1000の平均値を有する、第二の膜形成性金属不動態化剤と;
(d)これらのための水性のキャリアとを含む、化学機械研磨(CMP)組成物。 - 第一の膜形成性金属錯化剤がN―アシルサルコシン化合物、その塩、又はその部分的に中和した形態を含む、請求項1に記載した組成物。
- 第一の膜形成性金属錯化剤がo―ヒドロキシアリールヒドロキサム酸、その塩、又はその部分的に中和した形態を含む、請求項1に記載した組成物。
- 第二の膜形成性金属不動態化剤がアミン置換した窒素複素環式芳香族化合物、ビス―(ポリ(オキシエチレン))リン酸エステル、及びこれらの組み合わせを含む、請求項1に記載した組成物。
- 第二の膜形成性金属不動態化剤がアミン置換した窒素複素環式芳香族化合物を含む、請求項1に記載した組成物。
- アミン置換した窒素複素環式芳香族化合物が5―アミノテトラゾールを含む、請求項5に記載した組成物。
- 第二の膜形成性金属不動態化剤がビス―(ポリ(オキシエチレン))リン酸エステルを含む、請求項1に記載した組成物。
- ビス―(ポリ(オキシエチレン))リン酸エステルがビス―(ノニルフェニルポリ(オキシエチレン))リン酸エステルを含む、請求項7に記載した組成物。
- シュウ酸、アミノ置換したカルボン酸、ヒドロキシル置換したカルボン酸、これらの塩、これらの部分的に中和した形態、及び前述の二つ以上の組合せからなる群から選択される、0.01〜20質量パーセントの金属キレート助剤を更に含む、請求項1に記載した組成物。
- 金属キレート助剤がグリシンを含む、請求項1に記載の組成物。
- 微粒子研磨剤がシリカを含む、請求項1に記載の組成物。
- 銅及び/又は銀を含む基材の研磨に適する化学機械研磨(CMP)組成物であって、該組成物は:
(a)0.01〜10質量パーセントの微粒子研磨剤と;
(b) 0.001〜1質量パーセントのサリチルヒドロキサム酸、その塩、又はその部分的に中和した形態と;
(c)アミン置換した窒素複素環式芳香族化合物、及びビス―(ポリ(オキシエチレン))リン酸エステルからなる群から選択した、0.005〜0.5質量パーセントの少なくとも一つの第二の膜形成性金属不動態化剤と;
(d)これらのための水性のキャリアとを含む、化学機械研磨(CMP)組成物。 - 少なくとも一つの第二の膜形成性金属不動態化剤が5―アミノテトラゾールを含む、請求項12に記載の組成物。
- 少なくとも一つの第二の膜形成性金属不動態化剤がビス―(ノニルフェニルポリ(オキシエチレン))リン酸エステルを含む、請求項12に記載した組成物。
- 銅及び/又は銀を含む基材の化学機械研磨(CMP)方法であって、該方法はCMP組成物を用いて基材表面を摩耗する工程を含み、該CMP組成物は:
(a)0.01〜10質量パーセントの微粒子研磨剤と;
(b) 0.001〜1質量パーセントの第一の膜形成性金属錯化剤であって、下記式(I):A―X―Y―OH、これらの塩、又はこれらの部分的に中和された形態の化合物を含み、ここでAは―N(R1)―C(=O)―R2、又は―C(=O)―NH―OHであり;Xが―C(R3)(R4)―で、かつYが―C(=O)―であるか、又はX及びYが共に、式(I)においてA及びOH基が互いに1,2(若しくは「オルト」)の関係に位置するアリール基を形成し;R1はH、置換したC1〜C4のアルキル、又は非置換のC1〜C4のアルキルであり;R2は置換したC8〜C20のアルキル、又は非置換のC8〜C20のアルキルであり;並びに、R3及びR4はそれぞれ独立にH、置換したC1〜C4のアルキル、又は非置換のC1〜C4のアルキルである、第一の膜形成性金属錯化剤と;
(c)0.005〜0.5質量パーセントの第二の膜形成性金属不動態化剤であって、下記式(II):Z―X2(Y2R5)(Y3R6)、これらの塩、及びこれらの部分的に中和した形態の化合物を含み;ここでZはNH2、又はOHであり;X2はP=O、又はCであり;Y2及びY3はそれぞれ独立にN、NH、又はOであり;R5及びR6はそれぞれ独立に、R7 ―(OCH2CH2)n―であることができ、又はY2及びY3がそれぞれ独立にN、若しくはNHである場合、R5及びR6はそれぞれ独立にN、NH若しくはCHであることができ、かつY2及びY3は共にX2、Y2、及びY3を有する五員環の複素環を形成し;それぞれのR7は独立にH、C1〜C20のアルキル、フェニル、又はC1〜C20のアルキルで置換したフェニルであり;並びに「n」は2〜1000の平均値を有する、第二の膜形成性金属不動態化剤と;
(d)これらのための水性のキャリアとを含むCMP組成物である、化学機械研磨(CMP)方法。 - 第一の膜形成性金属錯化剤がN―アシルサルコシン化合物を含む、請求項15に記載した方法。
- 第一の膜形成性金属錯化剤がo―ヒドロキシアリールヒドロキサム酸、その塩、又はその部分的に中和した形態を含む、請求項15に記載した方法。
- 第二の膜形成性金属不動態化剤が、アミン置換した窒素複素環式芳香族化合物、ビス―(ポリ(オキシエチレン))リン酸エステル、及びこれらの組み合わせからなる群から選択される、請求項15に記載した方法。
- 第二の膜形成性金属不動態化剤がビス―(ノニルフェニルポリ(オキシエチレン))リン酸エステル、5―アミノテトラゾール、及びこれらの組み合わせからなる群から選択される、請求項15に記載した方法。
- CMP組成物がシュウ酸、アミノ置換したカルボン酸、ヒドロキシル置換したカルボン酸、これらの塩、これらの部分的に中和した形態、及び前述の二つ以上の組合せからなる群から選択された金属キレート助剤を更に含む、請求項15に記載した方法。
- 微粒子研磨剤がシリカを含む、請求項15に記載した方法。
- 基材表面を、0.1〜5質量パーセントの酸化剤の存在下で摩耗する、請求項15に記載した方法。
- CMP組成物を用いて基材表面を摩耗した後に、基材をベンゾトリアゾール(BTA)溶液に浸漬する更なる工程を含む、請求項15に記載した方法。
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KR20140047015A (ko) | 2014-04-21 |
CN103298903B (zh) | 2015-11-25 |
WO2012096931A2 (en) | 2012-07-19 |
TWI462981B (zh) | 2014-12-01 |
TW201235428A (en) | 2012-09-01 |
CN103298903A (zh) | 2013-09-11 |
IL227384A0 (en) | 2013-09-30 |
EP2663604A2 (en) | 2013-11-20 |
WO2012096931A3 (en) | 2012-11-01 |
IL227384A (en) | 2017-05-29 |
SG191909A1 (en) | 2013-08-30 |
MY163010A (en) | 2017-07-31 |
EP2663604A4 (en) | 2016-04-27 |
JP5992925B2 (ja) | 2016-09-14 |
KR20180123167A (ko) | 2018-11-14 |
KR102017133B1 (ko) | 2019-09-02 |
KR102077618B1 (ko) | 2020-02-14 |
EP2663604B1 (en) | 2020-07-01 |
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