JP7378267B2 - コバルト錯体、その製造方法、及びコバルト含有薄膜の製造方法 - Google Patents
コバルト錯体、その製造方法、及びコバルト含有薄膜の製造方法 Download PDFInfo
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- JP7378267B2 JP7378267B2 JP2019196928A JP2019196928A JP7378267B2 JP 7378267 B2 JP7378267 B2 JP 7378267B2 JP 2019196928 A JP2019196928 A JP 2019196928A JP 2019196928 A JP2019196928 A JP 2019196928A JP 7378267 B2 JP7378267 B2 JP 7378267B2
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- 239000010409 thin film Substances 0.000 title claims description 116
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 title claims description 113
- 229910017052 cobalt Inorganic materials 0.000 title claims description 112
- 239000010941 cobalt Substances 0.000 title claims description 112
- 238000004519 manufacturing process Methods 0.000 title claims description 102
- 150000004700 cobalt complex Chemical class 0.000 title claims description 86
- 125000004432 carbon atom Chemical group C* 0.000 claims description 67
- 125000000217 alkyl group Chemical group 0.000 claims description 61
- 239000007789 gas Substances 0.000 claims description 59
- 238000006243 chemical reaction Methods 0.000 claims description 47
- 238000000034 method Methods 0.000 claims description 42
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 36
- 239000003446 ligand Substances 0.000 claims description 28
- 238000005229 chemical vapour deposition Methods 0.000 claims description 25
- 150000001875 compounds Chemical class 0.000 claims description 24
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 claims description 23
- 125000005842 heteroatom Chemical group 0.000 claims description 20
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 14
- 239000012495 reaction gas Substances 0.000 claims description 14
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 13
- FTQWRYSLUYAIRQ-UHFFFAOYSA-N n-[(octadecanoylamino)methyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCNC(=O)CCCCCCCCCCCCCCCCC FTQWRYSLUYAIRQ-UHFFFAOYSA-N 0.000 claims description 13
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 12
- 125000002947 alkylene group Chemical group 0.000 claims description 11
- 150000001408 amides Chemical class 0.000 claims description 10
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 10
- 238000001947 vapour-phase growth Methods 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 description 136
- -1 1-dimethylamino-2-methyl-2-propoxy Chemical group 0.000 description 113
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 74
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 69
- 150000001868 cobalt Chemical class 0.000 description 56
- 239000000758 substrate Substances 0.000 description 53
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 44
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- 239000010408 film Substances 0.000 description 41
- 229910052786 argon Inorganic materials 0.000 description 37
- 239000012159 carrier gas Substances 0.000 description 37
- 239000007788 liquid Substances 0.000 description 33
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 30
- 239000003085 diluting agent Substances 0.000 description 29
- 239000000243 solution Substances 0.000 description 28
- 239000000203 mixture Substances 0.000 description 25
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 25
- 238000000231 atomic layer deposition Methods 0.000 description 24
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- 238000010438 heat treatment Methods 0.000 description 22
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 22
- 238000010586 diagram Methods 0.000 description 20
- 238000000113 differential scanning calorimetry Methods 0.000 description 20
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 18
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- 238000002441 X-ray diffraction Methods 0.000 description 17
- 230000015572 biosynthetic process Effects 0.000 description 17
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- 150000001412 amines Chemical class 0.000 description 14
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 14
- HIVLVXZBPYHFNU-UHFFFAOYSA-N bis(trimethylsilyl)azanide cobalt(2+) [1-(dimethylamino)-2-methylpropan-2-yl]-trimethylsilylazanide Chemical compound CC(C)(CN(C)C)[N-][Si](C)(C)C.C[Si](C)(C)[N-][Si](C)(C)C.[Co+2] HIVLVXZBPYHFNU-UHFFFAOYSA-N 0.000 description 13
- 239000003960 organic solvent Substances 0.000 description 13
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 12
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- LEQVBGOJANWCKL-UHFFFAOYSA-N bis(trimethylsilyl)azanide;cobalt(2+) Chemical compound [Co+2].C[Si](C)(C)[N-][Si](C)(C)C.C[Si](C)(C)[N-][Si](C)(C)C LEQVBGOJANWCKL-UHFFFAOYSA-N 0.000 description 12
- 238000004821 distillation Methods 0.000 description 12
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- 238000005979 thermal decomposition reaction Methods 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- VUBSTPZLTPSBEG-UHFFFAOYSA-N CC(C)(C)N([Co]N(C(C)(C)C)[Si](C)(C)C)[Si](C)(C)C Chemical compound CC(C)(C)N([Co]N(C(C)(C)C)[Si](C)(C)C)[Si](C)(C)C VUBSTPZLTPSBEG-UHFFFAOYSA-N 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- 125000004122 cyclic group Chemical group 0.000 description 8
- 229910001873 dinitrogen Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 8
- 238000000746 purification Methods 0.000 description 8
- 239000004065 semiconductor Substances 0.000 description 8
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 8
- YRAJNWYBUCUFBD-UHFFFAOYSA-N 2,2,6,6-tetramethylheptane-3,5-dione Chemical compound CC(C)(C)C(=O)CC(=O)C(C)(C)C YRAJNWYBUCUFBD-UHFFFAOYSA-N 0.000 description 7
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 7
- 229910004298 SiO 2 Inorganic materials 0.000 description 7
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- 238000001914 filtration Methods 0.000 description 7
- 235000019253 formic acid Nutrition 0.000 description 7
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- 230000001590 oxidative effect Effects 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 125000001981 tert-butyldimethylsilyl group Chemical group [H]C([H])([H])[Si]([H])(C([H])([H])[H])[*]C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 7
- 238000005160 1H NMR spectroscopy Methods 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 6
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 6
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 6
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 6
- OCKPCBLVNKHBMX-UHFFFAOYSA-N butylbenzene Chemical compound CCCCC1=CC=CC=C1 OCKPCBLVNKHBMX-UHFFFAOYSA-N 0.000 description 6
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- RWGFKTVRMDUZSP-UHFFFAOYSA-N cumene Chemical compound CC(C)C1=CC=CC=C1 RWGFKTVRMDUZSP-UHFFFAOYSA-N 0.000 description 6
- IIEWJVIFRVWJOD-UHFFFAOYSA-N ethylcyclohexane Chemical compound CCC1CCCCC1 IIEWJVIFRVWJOD-UHFFFAOYSA-N 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- 239000011261 inert gas Substances 0.000 description 6
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 6
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 6
- SKTCDJAMAYNROS-UHFFFAOYSA-N methoxycyclopentane Chemical compound COC1CCCC1 SKTCDJAMAYNROS-UHFFFAOYSA-N 0.000 description 6
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 6
- 125000002524 organometallic group Chemical group 0.000 description 6
- ODLMAHJVESYWTB-UHFFFAOYSA-N propylbenzene Chemical compound CCCC1=CC=CC=C1 ODLMAHJVESYWTB-UHFFFAOYSA-N 0.000 description 6
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- UUNSWGLXWWCMRB-UHFFFAOYSA-N N-propyl-4-propyliminopent-2-en-2-amine Chemical compound C(CC)NC(C)=CC(C)=NCCC UUNSWGLXWWCMRB-UHFFFAOYSA-N 0.000 description 5
- XGIUDIMNNMKGDE-UHFFFAOYSA-N bis(trimethylsilyl)azanide Chemical compound C[Si](C)(C)[N-][Si](C)(C)C XGIUDIMNNMKGDE-UHFFFAOYSA-N 0.000 description 5
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 5
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 5
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- WSKRZIDLTICZDK-UHFFFAOYSA-N cobalt(2+) [1-(dimethylamino)-2-methylpropan-2-yl]-trimethylsilylazanide Chemical compound CC(C)(CN(C)C)[N-][Si](C)(C)C.CC(C)(CN(C)C)[N-][Si](C)(C)C.[Co+2] WSKRZIDLTICZDK-UHFFFAOYSA-N 0.000 description 4
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- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- OGLDWXZKYODSOB-SNVBAGLBSA-N alpha-phellandrene Natural products CC(C)[C@H]1CC=C(C)C=C1 OGLDWXZKYODSOB-SNVBAGLBSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 238000000089 atomic force micrograph Methods 0.000 description 1
- LFJQCDVYDGGFCH-UHFFFAOYSA-N beta-phellandrene Natural products CC(C)C1CCC(=C)C=C1 LFJQCDVYDGGFCH-UHFFFAOYSA-N 0.000 description 1
- HUSOGRWRDILXGJ-UHFFFAOYSA-N bis(trimethylsilyl)azanide cobalt(2+) 2-(dimethylamino)ethyl-trimethylsilylazanide Chemical compound CN(C)CC[N-][Si](C)(C)C.C[Si](C)(C)[N-][Si](C)(C)C.[Co+2] HUSOGRWRDILXGJ-UHFFFAOYSA-N 0.000 description 1
- LRJRPHROCLHMHK-UHFFFAOYSA-N boron;n,n-dimethylmethanamine Chemical compound [B].CN(C)C LRJRPHROCLHMHK-UHFFFAOYSA-N 0.000 description 1
- RJTANRZEWTUVMA-UHFFFAOYSA-N boron;n-methylmethanamine Chemical compound [B].CNC RJTANRZEWTUVMA-UHFFFAOYSA-N 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- WTVNFKVGGUWHQC-UHFFFAOYSA-N decane-2,4-dione Chemical compound CCCCCCC(=O)CC(C)=O WTVNFKVGGUWHQC-UHFFFAOYSA-N 0.000 description 1
- NUOXSJGIRWCWNR-UHFFFAOYSA-N decane-3,5-dione Chemical compound CCCCCC(=O)CC(=O)CC NUOXSJGIRWCWNR-UHFFFAOYSA-N 0.000 description 1
- WEEPLAUJNANUQB-UHFFFAOYSA-N decane-4,6-dione Chemical compound CCCCC(=O)CC(=O)CCC WEEPLAUJNANUQB-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- JJQZDUKDJDQPMQ-UHFFFAOYSA-N dimethoxy(dimethyl)silane Chemical compound CO[Si](C)(C)OC JJQZDUKDJDQPMQ-UHFFFAOYSA-N 0.000 description 1
- XNMQEEKYCVKGBD-UHFFFAOYSA-N dimethylacetylene Natural products CC#CC XNMQEEKYCVKGBD-UHFFFAOYSA-N 0.000 description 1
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 1
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 description 1
- AOWTYVFGMCEIRN-UHFFFAOYSA-N ethoxycyclopentane Chemical compound CCOC1CCCC1 AOWTYVFGMCEIRN-UHFFFAOYSA-N 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- ILPNRWUGFSPGAA-UHFFFAOYSA-N heptane-2,4-dione Chemical compound CCCC(=O)CC(C)=O ILPNRWUGFSPGAA-UHFFFAOYSA-N 0.000 description 1
- AHAREKHAZNPPMI-UHFFFAOYSA-N hexa-1,3-diene Chemical compound CCC=CC=C AHAREKHAZNPPMI-UHFFFAOYSA-N 0.000 description 1
- APPOKADJQUIAHP-UHFFFAOYSA-N hexa-2,4-diene Chemical compound CC=CC=CC APPOKADJQUIAHP-UHFFFAOYSA-N 0.000 description 1
- NDOGLIPWGGRQCO-UHFFFAOYSA-N hexane-2,4-dione Chemical compound CCC(=O)CC(C)=O NDOGLIPWGGRQCO-UHFFFAOYSA-N 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- JJWLVOIRVHMVIS-UHFFFAOYSA-N isopropylamine Chemical compound CC(C)N JJWLVOIRVHMVIS-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- YNESATAKKCNGOF-UHFFFAOYSA-N lithium bis(trimethylsilyl)amide Chemical compound [Li+].C[Si](C)(C)[N-][Si](C)(C)C YNESATAKKCNGOF-UHFFFAOYSA-N 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- WZOPVZXOFJWNSX-UHFFFAOYSA-N n',n'-dimethyl-n-trimethylsilylpropane-1,3-diamine Chemical compound CN(C)CCCN[Si](C)(C)C WZOPVZXOFJWNSX-UHFFFAOYSA-N 0.000 description 1
- DILRJUIACXKSQE-UHFFFAOYSA-N n',n'-dimethylethane-1,2-diamine Chemical compound CN(C)CCN DILRJUIACXKSQE-UHFFFAOYSA-N 0.000 description 1
- DAZXVJBJRMWXJP-UHFFFAOYSA-N n,n-dimethylethylamine Chemical compound CCN(C)C DAZXVJBJRMWXJP-UHFFFAOYSA-N 0.000 description 1
- OWKFQWAGPHVFRF-UHFFFAOYSA-N n-(diethylaminosilyl)-n-ethylethanamine Chemical compound CCN(CC)[SiH2]N(CC)CC OWKFQWAGPHVFRF-UHFFFAOYSA-N 0.000 description 1
- VYIRVGYSUZPNLF-UHFFFAOYSA-N n-(tert-butylamino)silyl-2-methylpropan-2-amine Chemical compound CC(C)(C)N[SiH2]NC(C)(C)C VYIRVGYSUZPNLF-UHFFFAOYSA-N 0.000 description 1
- QUZHNRWRKHXJHG-UHFFFAOYSA-N n-butan-2-yl-4-butan-2-yliminopent-2-en-2-amine Chemical compound CCC(C)NC(C)=CC(C)=NC(C)CC QUZHNRWRKHXJHG-UHFFFAOYSA-N 0.000 description 1
- GNVRJGIVDSQCOP-UHFFFAOYSA-N n-ethyl-n-methylethanamine Chemical compound CCN(C)CC GNVRJGIVDSQCOP-UHFFFAOYSA-N 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 235000013842 nitrous oxide Nutrition 0.000 description 1
- HWWGUUIGLJQLQD-UHFFFAOYSA-N nonane-3,5-dione Chemical compound CCCCC(=O)CC(=O)CC HWWGUUIGLJQLQD-UHFFFAOYSA-N 0.000 description 1
- ZDYWPVCQPUPOJV-UHFFFAOYSA-N nonane-4,6-dione Chemical compound CCCC(=O)CC(=O)CCC ZDYWPVCQPUPOJV-UHFFFAOYSA-N 0.000 description 1
- GJYXGIIWJFZCLN-UHFFFAOYSA-N octane-2,4-dione Chemical compound CCCCC(=O)CC(C)=O GJYXGIIWJFZCLN-UHFFFAOYSA-N 0.000 description 1
- PJEPOHXMGDEIMR-UHFFFAOYSA-N octane-3,5-dione Chemical compound CCCC(=O)CC(=O)CC PJEPOHXMGDEIMR-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- FPKGXWLAUMDRRC-UHFFFAOYSA-N pent-1-en-2-amine Chemical compound CCCC(N)=C FPKGXWLAUMDRRC-UHFFFAOYSA-N 0.000 description 1
- QYZLKGVUSQXAMU-UHFFFAOYSA-N penta-1,4-diene Chemical compound C=CCC=C QYZLKGVUSQXAMU-UHFFFAOYSA-N 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 150000003139 primary aliphatic amines Chemical class 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 150000003222 pyridines Chemical class 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 150000005619 secondary aliphatic amines Chemical class 0.000 description 1
- 239000011343 solid material Substances 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
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- YBRBMKDOPFTVDT-UHFFFAOYSA-N tert-butylamine Chemical compound CC(C)(C)N YBRBMKDOPFTVDT-UHFFFAOYSA-N 0.000 description 1
- BCNZYOJHNLTNEZ-UHFFFAOYSA-N tert-butyldimethylsilyl chloride Chemical compound CC(C)(C)[Si](C)(C)Cl BCNZYOJHNLTNEZ-UHFFFAOYSA-N 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 125000003258 trimethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- GIRKRMUMWJFNRI-UHFFFAOYSA-N tris(dimethylamino)silicon Chemical compound CN(C)[Si](N(C)C)N(C)C GIRKRMUMWJFNRI-UHFFFAOYSA-N 0.000 description 1
- VEDJZFSRVVQBIL-UHFFFAOYSA-N trisilane Chemical compound [SiH3][SiH2][SiH3] VEDJZFSRVVQBIL-UHFFFAOYSA-N 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
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
- C07F15/06—Cobalt compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
- C07F15/06—Cobalt compounds
- C07F15/065—Cobalt compounds without a metal-carbon linkage
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F17/00—Metallocenes
- C07F17/02—Metallocenes of metals of Groups 8, 9 or 10 of the Periodic System
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/06—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of metallic material
- C23C16/18—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of metallic material from metallo-organic compounds
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/448—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials
- C23C16/4485—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for generating reactive gas streams, e.g. by evaporation or sublimation of precursor materials by evaporation without using carrier gas in contact with the source material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45553—Atomic layer deposition [ALD] characterized by the use of precursors specially adapted for ALD
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
- C07C49/04—Saturated compounds containing keto groups bound to acyclic carbon atoms
- C07C49/12—Ketones containing more than one keto group
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
- C07C49/04—Saturated compounds containing keto groups bound to acyclic carbon atoms
- C07C49/12—Ketones containing more than one keto group
- C07C49/14—Acetylacetone, i.e. 2,4-pentanedione
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Vapour Deposition (AREA)
- Formation Of Insulating Films (AREA)
Description
(式中、L1及びL2は相異なって、各々一般式(A)
(式中、R1及びR2は各々独立に炭素数1~6のアルキル基又はトリ(炭素数1~6のアルキル)シリル基を表す。波線はコバルト原子との結合手を表す。)で表される単座アミド配位子、一般式(B)
(式中、R3はトリ(炭素数1~6のアルキル)シリル基を表す。R4及びR5は各々独立に炭素数1~4のアルキル基を表す。Xは炭素数1~6のアルキレン基を表す。)で表される二座アミド配位子、又は一般式(C)
(式中、R6及びR8は各々独立に炭素数1~6のアルキル基を表す。R7は水素原子又は炭素数1~4のアルキル基を表す。Yは酸素原子又はNR9を表す。Zは酸素原子又はNR10を表す。R9及びR10は各々独立に炭素数1~6のアルキル基を表す。)で表されるヘテロ原子含有配位子を表す。)で示されるコバルト錯体、より具体的には一般式(1AB)
(式中、R1及びR2は一般式(A)のR1及びR2と同義を表し、R3、R4、R5及びXは一般式(B)のR3、R4、R5及びXと同義を表す。)で示されるコバルト錯体、一般式(1AC)
(式中、R1及びR2は一般式(A)のR1及びR2と同義を表し、R6、R7、R8、Y及びZは一般式(C)のR6、R7、R8、Y及びZと同義を表す。)で示されるコバルト錯体、及び一般式(1BC)
(式中、R3、R4、R5及びXは一般式(B)のR3、R4、R5及びXと同義を表し、R6、R7、R8、Y及びZは一般式(C)のR6、R7、R8、Y及びZと同義を表す。)で示されるコバルト錯体に関する。
(式中、R1及びR2は各々独立に炭素数1~6のアルキル基又はトリ(炭素数1~6のアルキル)シリル基を表す。Dは中性配位子を表す。nは0又は1を表す。)で示されるビスアミド錯体と、一般式(3)
(式中、R3はトリ(炭素数1~6のアルキル)シリル基を表す。R4及びR5は各々独立に炭素数1~6のアルキル基を表す。Xは炭素数1~6のアルキレン基を表す。)で表されるアミノアルキルアミンとを反応させる、一般式(1AB)で示されるコバルト錯体の製造方法に関する。
(式中、R6及びR8は各々独立に炭素数1~6のアルキル基を表す。R7は水素原子又は炭素数1~4のアルキル基を示す。Yは酸素原子又はNR9を表す。Zは酸素原子又はNR10を表す。R9及びR10は各々独立に炭素数1~6のアルキル基を表す。)で表されるヘテロ原子含有化合物とを反応させる、一般式(1AC)で示されるコバルト錯体の製造方法に関する。
本発明のコバルト錯体(1)の内、コバルト錯体(1AB)の具体例としては、
まず、一般式(2)で表されるDの定義について説明する。Dは中性配位子を表し、テトラヒドロフラン(THF)、メチルアミン、エチルアミン、プロピルアミン、イソプロピルアミン、ブチルアミン、イソブチルアミン、sec-ブチルアミン、tert-ブチルアミンなどの第一級脂肪族アミン、ジメチルアミン、ジエチルアミンなどの第二級脂肪族アミン、トリメチルアミン、エチルジメチルアミン、ジエチルメチルアミン、トリエチルアミンなどの第三級脂肪族アミン、ピリジン、4-ジメチルアミノピリジンなどの置換/無置換ピリジンを例示することが出来る。収率が良い点で、THF又は第三級脂肪族アミンが好ましく、THF又はトリエチルアミンが更に好ましく、THFが殊更好ましい。
本発明の製造方法2で用いることができるビスアミド錯体(2)は、製造方法1の説明で記載したビスアミド錯体(2)を用いることが出来る。
なお、本明細書中では簡略のため(4)、(4a)及び(4b)の全てを包括して一般式(4)で示すこととする。
本発明の製造方法3で用いることが出来るコバルト錯体(1AB)は、本発明の製造方法1で製造することによって入手することが出来る。
1H-NMR(400MHz,C6D6,δ):54.3(br,18H),33.0(br,18H)。
1H-NMR(400MHz,C6D6,δ):168.2(br,4H),100.2(br,4H),-15.9(br,36H)。
1H-NMR(400MHz,CDCl3,δ)2.32(s,6H),2.11(s,2H),1.09(s,6H),1.05(br、1H),0.06(s,9H)。
1H-NMR(400MHz,CDCl3,δ)2.57(q,J=7.1Hz,4H),2.50(br,1H),2.27(s,2H),1.07(s,6H),0.98(t,J=7.1Hz,6H),0.05(s,9H)。
1H-NMR(400MHz,CDCl3,δ)2.31(s,6H),2.10(s,2H),1.07(s,6H),1.01(br,1H),0.86(s,9H),0.03(s,6H)。
1H-NMR(400MHz,C6D6,δ)2.75(dt,J=7.0,6.1Hz,2H),2.19(t,J=6.1Hz,2H),2.07(s,6H),0.97(br、1H),0.10(s,9H)。
1H-NMR(400MHz,C6D6,δ):134.0(brs,12H),102.9(brs,4H),39.4(brs,12H),-27.8(brs,18H)。
1H-NMR(400MHz,C6D6,δ):189.0(br,2H),122.0(br,3H)、111.1(br,3H)、84.6(br,3H)、58.7(br,3H)、36.0(brs,9H)、0.83(brs,9H)、-6.21(brs,9H)。
1H-NMR(400MHz,C6D6,δ):124.6(brs,6H),107.5(br,2H),68.4(br,2H),12.7(brs,9H),-9.32(brs,18H)。
1H-NMR(400MHz,C6D6,δ):149.5(brs,6H),118.7(brs,2H),62.0(brs,6H),32.7(brs,9H),-12.7(brs,18H)。
1H-NMR(400MHz,C6D6,δ):117.8(br,2H),59.7(brs,6H),27.6(br,4H),20.5(brs,9H),17.3(brs,6H),-12.8(brs,18H)。
1H-NMR(400MHz,C6D6,δ):160.4(br,6H),116.0(br,2H),62.5(brs,6H),44.6(brs,6H),-6.60(brs,9H),-14.5(brs,18H)。
1H-NMR(400MHz,C6D6,δ):65.6(br,6H),53.8(br,1H),46.1(br,1H),40.3(br,6H),14.2(brs,18H),3.99(br,9H),-30.3(br,1H)。
1H-NMR(400MHz,C6D6,δ):7.40(brs,6H),3.05(br,4H),-2.33(br,4H),-5.90(brs,18H),-29.7(brs,6H),-88.0(br,1H)。
[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ][ビス(トリメチルシリル)アミノ]コバルト(1AB-14)の熱分析
サンプルとして、実施例3で合成した(1AB-14)を、熱重量測定(TG)の場合18.9mg、示差走査熱量測定(DSC)の場合7.5mg用いた。
[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ](2,2,6,6-テトラメチル-3,5-ヘプタンジオナト)コバルト(1BC-56)の熱分析
サンプルとして、実施例6で合成した(1BC-56)を、TGの場合18.8mg、DSCの場合6.8mg用いた。
ビス[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ]コバルトの熱分析
サンプルとして、参考例7で合成したビス[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ]コバルトを、TGの場合19.0mg、DSCの場合7.0mg用いた。
ビス[(tert-ブチル)(トリメチルシリル)アミノ]コバルト(2-2)の熱分析
サンプルとして、参考例1で合成した(2-2)を、TGの場合19.2mg、DSCの場合3.6mg用いた。
実施例3で合成した[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ][ビス(トリメチルシリル)アミノ]コバルト(1AB-14)を材料に用いてコバルト含有薄膜を熱CVD法により製造した。薄膜製造のために使用した装置の概略を図1に示した。薄膜製造条件は以下の通りである。
キャリアガス流量:45sccm、アンモニア流量:40sccm、希釈ガス流量:115sccm、基板材料:SiO2、成膜時間:60分、反応チャンバー全圧:1.3kPa、材料容器温度:70℃、材料の蒸気圧:4.4Pa、材料容器内全圧:3.7kPa、材料供給速度:0.05sccm、基板温度:200℃。キャリアガス及び希釈ガスとしてアルゴンを用いた。製造した薄膜を蛍光X線分析で確認したところコバルトに基づく特性X線が検出された。検出されたX線の強度から算出したところ、24nmであった。作製したコバルト含有薄膜の電気特性を四探針法で測定したところ、159μΩ・cmであった。
実施例6で合成した[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ](2,2,6,6-テトラメチル-3,5-ヘプタンジオナト)コバルト(1BC-56)を材料に用いてコバルト含有薄膜を熱CVD法により製造した。薄膜製造のために使用した装置の概略を図1に示した。薄膜製造条件は以下の通りである。
キャリアガス流量:30sccm、アンモニア流量:100sccm、希釈ガス流量:70sccm、基板材料:SiO2、成膜時間:120分、反応チャンバー全圧:1.3kPa、材料容器温度:85℃、材料の蒸気圧:13.3Pa、材料容器内全圧:6.7kPa、材料供給速度:0.06sccm、基板温度:200℃。キャリアガス及び希釈ガスとしてアルゴンを用いた。製造した薄膜を蛍光X線分析で確認したところコバルトに基づく特性X線が検出された。検出されたX線の強度から算出したところ、54nmであった。作製したコバルト含有薄膜の電気特性を四探針法で測定したところ、185μΩ・cmであった。
実施例6で合成した[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ](2,2,6,6-テトラメチル-3,5-ヘプタンジオナト)コバルト(1BC-56)を材料に用いてコバルト含有薄膜を熱CVD法により製造した。薄膜製造のために使用した装置の概略を図1に示した。薄膜製造条件は以下の通りである。
キャリアガス流量:30sccm、アンモニア流量:100sccm、水素流量:3sccm、希釈ガス流量:67sccm、基板材料:SiO2、成膜時間:120分、反応チャンバー全圧:1.3kPa、材料容器温度:85℃、材料の蒸気圧:13.3Pa、材料容器内全圧:6.7kPa、材料供給速度:0.06sccm、基板温度:200℃。キャリアガス及び希釈ガスとしてアルゴンを用いた。製造した薄膜を蛍光X線分析で確認したところコバルトに基づく特性X線が検出された。検出されたX線の強度から算出したところ、98nmであった。作製したコバルト含有薄膜の電気特性を四探針法で測定したところ、105μΩ・cmであった。
実施例6で合成した[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ](2,2,6,6-テトラメチル-3,5-ヘプタンジオナト)コバルト(1BC-56)を材料に用いてコバルト含有薄膜を熱CVD法により製造した。薄膜製造のために使用した装置の概略を図1に示した。薄膜製造条件は以下の通りである。
キャリアガス流量:30sccm、アンモニア流量:100sccm、希釈ガス流量:70sccm、基板材料:Ru、成膜時間:15分、反応チャンバー全圧:1.3kPa、材料容器温度:85℃、材料の蒸気圧:13.3Pa、材料容器内全圧:6.7kPa、材料供給速度:0.06sccm、基板温度:200℃。キャリアガス及び希釈ガスとしてアルゴンを用いた。製造した薄膜を蛍光X線分析で確認したところコバルトに基づく特性X線が検出された。検出されたX線の強度から算出したところ、9nmであった。得られた膜の表面平滑性をAFMにより評価したところ、膜のRaは1.0nm、Rmsは1.4nmであった(図6)。
ビス(N,N’-ジイソプロピルアセトアミジナト)コバルト(Co(iPrNC(Me)NiPr)2)を材料に用いてコバルト含有薄膜を熱CVD法により製造した。薄膜製造のために使用した装置の概略を図1に示した。薄膜製造条件は以下の通りである。
1H-NMR(400MHz,C6D6,δ):66.2(br,6H),54.9(br,2H),42.7(br,6H),4.55(br,9H),2.26(br,6H),-0.01(br,1H)。
実施例6で合成した[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ](2,2,6,6-テトラメチル-3,5-ヘプタンジオナト)コバルト(1BC-56)を材料に用いてコバルト含有薄膜を熱CVD法により製造した。薄膜製造のために使用した装置の概略を図1に示した。薄膜製造条件は以下の通りである。
キャリアガス流量:30sccm、ギ酸流量:0.2sccm、希釈ガス流量:166sccm、基板材料:Ru、成膜時間:120分、反応チャンバー全圧:1.3kPa、材料容器温度:85℃、材料の蒸気圧:13.3Pa、材料容器内全圧:6.7kPa、材料供給速度:0.06sccm、基板温度:200℃。キャリアガス及び希釈ガスとしてアルゴンを用いた。製造した薄膜を蛍光X線分析で確認したところコバルトに基づく特性X線が検出された。検出されたX線の強度から算出したところ、膜厚は49nmであった。作製した膜の元素組成を、X線光電子分光法(ESCA)により定量した。
C:6atm%,N:0atm%,O:1atm%,Si:0atm%,Co:93atm%。
実施例6で合成した[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ](2,2,6,6-テトラメチル-3,5-ヘプタンジオナト)コバルト(1BC-56)を材料に用いてコバルト含有薄膜を熱CVD法により製造した。薄膜製造のために使用した装置の概略を図1に示した。薄膜製造条件は以下の通りである。
キャリアガス流量:30sccm、ギ酸流量:0.2sccm、希釈ガス流量:166sccm、基板材料:Cu、成膜時間:120分、反応チャンバー全圧:1.3kPa、材料容器温度:85℃、材料の蒸気圧:13.3Pa、材料容器内全圧:6.7kPa、材料供給速度:0.06sccm、基板温度:200℃。キャリアガス及び希釈ガスとしてアルゴンを用いた。製造した薄膜を蛍光X線分析で確認したところコバルトに基づく特性X線が検出された。検出されたX線の強度から算出したところ、膜厚は49nmであった。
実施例6で合成した[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ](2,2,6,6-テトラメチル-3,5-ヘプタンジオナト)コバルト(1BC-56)を材料に用いてコバルト含有薄膜を熱CVD法により製造した。薄膜製造のために使用した装置の概略を図1に示した。薄膜製造条件は以下の通りである。
キャリアガス流量:30sccm、ギ酸流量:0.2sccm、希釈ガス流量:166sccm、基板材料:Ta、成膜時間:120分、反応チャンバー全圧:1.3kPa、材料容器温度:85℃、材料の蒸気圧:13.3Pa、材料容器内全圧:6.7kPa、材料供給速度:0.06sccm、基板温度:200℃。キャリアガス及び希釈ガスとしてアルゴンを用いた。製造した薄膜を蛍光X線分析で確認したところコバルトに基づく特性X線が検出された。検出されたX線の強度から算出したところ、膜厚は44nmであった。
1H-NMR(400MHz,C6D6,δ):66.1(br,6H),54.5(br,2H),41.8-47.5(br,7H),11.5(brs,6H),9.71(br,4H),4.46(br,9H)。
実施例6で合成した[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ](2,2,6,6-テトラメチル-3,5-ヘプタンジオナト)コバルト(1BC-56)を材料に用い、SiO2基板上にALD法でコバルト含有薄膜を製造した。薄膜製造のために使用した装置の概略を図7に示す。薄膜製造条件は以下の通りである。
キャリアガス:アルゴン30sccm、反応ガス:アンモニア100sccmとアルゴン70sccmの混合ガス、パージガス:アルゴン70sccm、材料容器温度:85℃、材料の蒸気圧:13.3Pa、材料容器内全圧:6.7kPa、材料供給速度:0.06sccm、基板温度:300℃、反応チャンバー全圧:~1.4Paの条件において、以下の(1)~(4)からなる工程を1サイクルとして、240回、計120分繰り返した。
実施例6で合成した[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ](2,2,6,6-テトラメチル-3,5-ヘプタンジオナト)コバルト(1BC-56)を材料に用い、ALD法でコバルト含有薄膜を製造した。基板には表面がRuで被覆された、ホール径150nm、ホール深さ1000nm、アスペクト比1:6.7のホール基板を用いた。
キャリアガス:アルゴン30sccm、反応ガス:アンモニア100sccmとアルゴン70sccmの混合ガス、パージガス:アルゴン70sccm、材料容器温度:85℃、材料の蒸気圧:13.3Pa、材料容器内全圧:6.7kPa、材料供給速度:0.06sccm、基板温度:225℃、反応チャンバー全圧:~1.4Paの条件において、以下の(1)~(4)からなる工程を1サイクルとして、240回、計120分繰り返した。
実施例3で合成した[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ][ビス(トリメチルシリル)アミノ]コバルト(1AB-14)を材料に用いてコバルト含有薄膜を熱CVD法により製造した。薄膜製造のために使用した装置の概略を図1に示した。薄膜製造条件は以下の通りである。
実施例3で合成した[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ][ビス(トリメチルシリル)アミノ]コバルト(1AB-14)を材料に用いてコバルト含有薄膜を熱CVD法により製造した。薄膜製造のために使用した装置の概略を図1に示した。薄膜製造条件は以下の通りである。
実施例3で合成した[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ][ビス(トリメチルシリル)アミノ]コバルト(1AB-14)を材料に用いてコバルト含有薄膜を熱CVD法により製造した。薄膜製造のために使用した装置の概略を図1に示した。薄膜製造条件は以下の通りである。
実施例3で合成した[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ][ビス(トリメチルシリル)アミノ]コバルト(1AB-14)を材料に用いてコバルト含有薄膜を熱CVD法により製造した。薄膜製造のために使用した装置の概略を図1に示した。薄膜製造条件は以下の通りである。
実施例3で合成した[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ][ビス(トリメチルシリル)アミノ]コバルト(1AB-14)を材料に用いてコバルト含有薄膜を熱CVD法により製造した。薄膜製造のために使用した装置の概略を図1に示した。薄膜製造条件は以下の通りである。
実施例3で合成した[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ][ビス(トリメチルシリル)アミノ]コバルト(1AB-14)を材料に用いてコバルト含有薄膜を熱CVD法により製造した。薄膜製造のために使用した装置の概略を図1に示した。薄膜製造条件は以下の通りである。
実施例3で合成した[(2-ジメチルアミノ-1,1-ジメチルエチル)(トリメチルシリル)アミノ][ビス(トリメチルシリル)アミノ]コバルト(1AB-14)を材料に用いてコバルト含有薄膜を熱CVD法により製造した。薄膜製造のために使用した装置の概略を図1に示した。薄膜製造条件は以下の通りである。
2 恒温槽
3 反応チャンバー
4 基板
5 反応ガス導入口
6 希釈ガス導入口
7 キャリアガス導入口
8 マスフローコントローラー
9 マスフローコントローラー
10 マスフローコントローラー
11 油回転式ポンプ
12 排気
13 材料容器
14 恒温槽
15 反応チャンバー
16 基板
17 反応ガス導入口
18 希釈ガス導入口
19 キャリアガス導入口
20 マスフローコントローラー
21 マスフローコントローラー
22 マスフローコントローラー
23 油回転式ポンプ
24 排気
Claims (18)
- 一般式(1)
(式中、L1及びL2は相異なって、各々一般式(A)
(式中、R1及びR2は各々独立に炭素数1~6のアルキル基又はトリ(炭素数1~6のアルキル)シリル基を表す。波線はコバルト原子との結合手を表す。)で表される単座アミド配位子、一般式(B)
(式中、R3はトリ(炭素数1~6のアルキル)シリル基を表す。R4及びR5は各々独立に炭素数1~4のアルキル基を表す。Xは炭素数1~6のアルキレン基を表す。)で表される二座アミド配位子、又は一般式(C)
(式中、R6及びR8は各々独立に炭素数1~6のアルキル基を表す。R7は水素原子又は炭素数1~4のアルキル基を表す。Yは酸素原子又はNR9を表す。Zは酸素原子又はNR10を表す。R9及びR10は各々独立に炭素数1~6のアルキル基を表す。)で表されるヘテロ原子含有配位子を表す。)で示されるコバルト錯体であって、
前記コバルト錯体が、
一般式(1AB)
(式中、R 1 及びR 2 は一般式(A)のR 1 及びR 2 と同義を表す。R 3 、R 4 、R 5 及びXは一般式(B)のR 3 、R 4 、R 5 及びXと同義を表す。)、
一般式(1AC)
(式中、R 1 及びR 2 は一般式(A)のR 1 及びR 2 と同義を表し、R 6 、R 7 、R 8 、Y及びZは一般式(C)のR 6 、R 7 、R 8 、Y及びZと同義を表す。)、又は、
一般式(1BC)
(式中、R 3 、R 4 、R 5 及びXは一般式(B)のR 3 、R 4 、R 5 及びXと同義を表し、R 6 、R 7 、R 8 、Y及びZは一般式(C)のR 6 、R 7 、R 8 、Y及びZと同義を表す。)で示される、
コバルト錯体。 - 一般式(1AB)
(式中、R1及びR2は一般式(A)のR1及びR2と同義を表す。R3、R4、R5及びXは一般式(B)のR3、R4、R5及びXと同義を表す。)で示される請求項1に記載のコバルト錯体。 - R1、R2及びR3がトリ(炭素数1~4のアルキル)シリル基であり、R4及びR5がメチル基又はエチル基であり、Xが炭素数1~4のアルキレン基である請求項2に記載のコバルト錯体。
- R1、R2及びR3がトリメチルシリル基であり、R4及びR5がメチル基又はエチル基であり、Xが炭素数1~4のアルキレン基である請求項2に記載のコバルト錯体。
- 一般式(1AC)
(式中、R1及びR2は一般式(A)のR1及びR2と同義を表し、R6、R7、R8、Y及びZは一般式(C)のR6、R7、R8、Y及びZと同義を表す。)で示される請求項1に記載のコバルト錯体。 - R1及びR2がトリ(炭素数1~4のアルキル)シリル基であり、R6及びR8がメチル基であり、R7が水素原子であり、YがNR9であり、ZがNR10であり、R9及びR10が炭素数1~4のアルキル基である請求項5に記載のコバルト錯体。
- R1及びR2がトリメチルシリル基であり、R6及びR8がメチル基であり、R7が水素原子であり、YがNR9であり、ZがNR10であり、R9及びR10が炭素数1~4のアルキル基である請求項5に記載のコバルト錯体。
- 一般式(1BC)
(式中、R3、R4、R5及びXは一般式(B)のR3、R4、R5及びXと同義を表し、R6、R7、R8、Y及びZは一般式(C)のR6、R7、R8、Y及びZと同義を表す。)で示される請求項1に記載のコバルト錯体。 - R3がトリ(炭素数1~4のアルキル)シリル基であり、R4及びR5がメチル基又はエ
チル基であり、Xが炭素数1~4のアルキレン基であり、R6及びR8が炭素数1~4のアルキル基であり、R7が水素原子であり、Y及びZが酸素原子である請求項8に記載のコバルト錯体。 - R3がトリメチルシリル基であり、R4及びR5がメチル基又はエチル基であり、Xが炭素数1~4のアルキレン基であり、R6及びR8が炭素数1~4のアルキル基であり、R7が水素原子であり、Y及びZが酸素原子である請求項8に記載のコバルト錯体。
- 一般式(2)
(式中、R1及びR2は各々独立に炭素数1~6のアルキル基又はトリ(炭素数1~6のアルキル)シリル基を表す。Dは中性配位子を表す。nは0又は1を表す。)で示されるビスアミド錯体と、一般式(3)
(式中、R3はトリ(炭素数1~6のアルキル)シリル基を表す。R4及びR5は各々独立に炭素数1~6のアルキル基を表す。Xは炭素数1~6のアルキレン基を表す。)で表されるアミノアルキルアミンとを反応させる、請求項2に記載のコバルト錯体の製造方法。 - 一般式(2)
(式中、R1及びR2は各々独立に炭素数1~6のアルキル基又はトリ(炭素数1~6のアルキル)シリル基を表す。Dは中性配位子を表す。nは0又は1を表す。)で示されるビスアミド錯体と、一般式(4)
(式中、R6及びR8は各々独立に炭素数1~6のアルキル基を表す。R7は水素原子又は炭素数1~4のアルキル基を示す。Yは酸素原子又はNR9を表す。Zは酸素原子又はNR10を表す。R9及びR10は各々独立に炭素数1~6のアルキル基を表す。)で表されるヘテロ原子含有化合物とを反応させる、請求項5に記載のコバルト錯体の製造方法。 - 一般式(1AB)
(式中、R1及びR2は各々独立に炭素数1~6のアルキル基又はトリ(炭素数1~6のアルキル)シリル基を表す。R3はトリ(炭素数1~6のアルキル)シリル基を表す。R4及びR5は各々独立に炭素数1~4のアルキル基を表す。Xは炭素数1~6のアルキレン基を表す。)で示されるコバルト錯体と、一般式(4)
(式中、R6及びR8は各々独立に炭素数1~6のアルキル基を表す。R7は水素原子又は炭素数1~4のアルキル基を示す。Yは酸素原子又はNR9を表す。Zは酸素原子又はNR10を表す。R9及びR10は各々独立に炭素数1~6のアルキル基を表す。)で表されるヘテロ原子含有化合物とを反応させる、請求項8に記載のコバルト錯体の製造方法。 - 請求項1に記載のコバルト錯体を化学反応に基づく気相蒸着法に用いることを特徴とする、コバルト含有薄膜の製造方法。
- 化学反応に基づく気相蒸着法が化学気相蒸着法である、請求項14に記載のコバルト含有薄膜の製造方法。
- 化学反応に基づく気相蒸着法において反応ガスを用いることを特徴とする、請求項14又は15に記載のコバルト含有薄膜の製造方法。
- 反応ガスとして還元性ガスを用いる、請求項16に記載のコバルト含有薄膜の製造方法。
- コバルト含有薄膜が金属コバルト薄膜である請求項14~17のいずれかに記載のコバルト含有薄膜の製造方法。
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