WO2011083820A1 - 金属アルコキシド化合物及び当該化合物を用いた金属含有薄膜の製造法 - Google Patents
金属アルコキシド化合物及び当該化合物を用いた金属含有薄膜の製造法 Download PDFInfo
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- WO2011083820A1 WO2011083820A1 PCT/JP2011/050117 JP2011050117W WO2011083820A1 WO 2011083820 A1 WO2011083820 A1 WO 2011083820A1 JP 2011050117 W JP2011050117 W JP 2011050117W WO 2011083820 A1 WO2011083820 A1 WO 2011083820A1
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- WIPO (PCT)
- Prior art keywords
- metal
- zirconium
- alkoxide compound
- compound
- metal alkoxide
- Prior art date
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 87
- 239000002184 metal Substances 0.000 title claims abstract description 87
- -1 alkoxide compound Chemical class 0.000 title claims abstract description 71
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title abstract description 29
- 150000001875 compounds Chemical class 0.000 title abstract description 22
- 239000010409 thin film Substances 0.000 claims abstract description 36
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 35
- 238000005229 chemical vapour deposition Methods 0.000 claims abstract description 26
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical group [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000010936 titanium Chemical group 0.000 claims abstract description 13
- 229910052735 hafnium Inorganic materials 0.000 claims abstract description 12
- 229910052719 titanium Chemical group 0.000 claims abstract description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 8
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical group [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 239000002904 solvent Substances 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 3
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 150000002170 ethers Chemical class 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 description 26
- 238000006243 chemical reaction Methods 0.000 description 25
- 238000003786 synthesis reaction Methods 0.000 description 24
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 21
- 239000007788 liquid Substances 0.000 description 18
- 150000003755 zirconium compounds Chemical class 0.000 description 18
- 238000000231 atomic layer deposition Methods 0.000 description 16
- XQHYKWIBWHTMDR-UHFFFAOYSA-N CC(C)C(C(C)C)O[Zr](OC(C(C)C)C(C)C)(OC(C(C)C)C(C)C)OC(C(C)C)C(C)C Chemical compound CC(C)C(C(C)C)O[Zr](OC(C(C)C)C(C)C)(OC(C(C)C)C(C)C)OC(C(C)C)C(C)C XQHYKWIBWHTMDR-UHFFFAOYSA-N 0.000 description 15
- 239000012300 argon atmosphere Substances 0.000 description 15
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 14
- 239000012141 concentrate Substances 0.000 description 13
- 239000007789 gas Substances 0.000 description 13
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 13
- 239000010408 film Substances 0.000 description 12
- 239000000758 substrate Substances 0.000 description 12
- BAYAKMPRFGNNFW-UHFFFAOYSA-N 2,4-dimethylpentan-3-ol Chemical compound CC(C)C(O)C(C)C BAYAKMPRFGNNFW-UHFFFAOYSA-N 0.000 description 11
- 238000000151 deposition Methods 0.000 description 11
- 238000010438 heat treatment Methods 0.000 description 11
- 150000002736 metal compounds Chemical class 0.000 description 11
- 238000011084 recovery Methods 0.000 description 9
- 238000005160 1H NMR spectroscopy Methods 0.000 description 8
- 239000000706 filtrate Substances 0.000 description 8
- 230000008018 melting Effects 0.000 description 8
- 238000002844 melting Methods 0.000 description 8
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 8
- DUNKXUFBGCUVQW-UHFFFAOYSA-J zirconium tetrachloride Chemical compound Cl[Zr](Cl)(Cl)Cl DUNKXUFBGCUVQW-UHFFFAOYSA-J 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 230000008021 deposition Effects 0.000 description 6
- 229910001882 dioxygen Inorganic materials 0.000 description 6
- 150000002363 hafnium compounds Chemical class 0.000 description 6
- 230000000704 physical effect Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- WGYOOFMUKPWKON-UHFFFAOYSA-N CC(C)C(C(C)C)O[Hf](OC(C(C)C)C(C)C)(OC(C(C)C)C(C)C)OC(C(C)C)C(C)C Chemical compound CC(C)C(C(C)C)O[Hf](OC(C(C)C)C(C)C)(OC(C(C)C)C(C)C)OC(C(C)C)C(C)C WGYOOFMUKPWKON-UHFFFAOYSA-N 0.000 description 5
- RSOIFZVYRBMAEA-UHFFFAOYSA-N CC(C)C(C(C)C)O[Ti](OC(C(C)C)C(C)C)(OC(C(C)C)C(C)C)OC(C(C)C)C(C)C Chemical compound CC(C)C(C(C)C)O[Ti](OC(C(C)C)C(C)C)(OC(C(C)C)C(C)C)OC(C(C)C)C(C)C RSOIFZVYRBMAEA-UHFFFAOYSA-N 0.000 description 5
- 238000000921 elemental analysis Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 230000008016 vaporization Effects 0.000 description 5
- 239000006200 vaporizer Substances 0.000 description 5
- BGGIUGXMWNKMCP-UHFFFAOYSA-N 2-methylpropan-2-olate;zirconium(4+) Chemical compound CC(C)(C)O[Zr](OC(C)(C)C)(OC(C)(C)C)OC(C)(C)C BGGIUGXMWNKMCP-UHFFFAOYSA-N 0.000 description 4
- 239000012298 atmosphere Substances 0.000 description 4
- GYNNXHKOJHMOHS-UHFFFAOYSA-N methyl-cycloheptane Natural products CC1CCCCCC1 GYNNXHKOJHMOHS-UHFFFAOYSA-N 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- KQWGKQNSYGNBSJ-UHFFFAOYSA-N CC(C)C(CC)O[Zr](OC(C(C)C)CC)(OC(C(C)C)CC)OC(C(C)C)CC Chemical compound CC(C)C(CC)O[Zr](OC(C(C)C)CC)(OC(C(C)C)CC)OC(C(C)C)CC KQWGKQNSYGNBSJ-UHFFFAOYSA-N 0.000 description 3
- QJWSESNDRVMRRN-UHFFFAOYSA-N CC(C)C(CCC)O[Zr](OC(C(C)C)CCC)(OC(C(C)C)CCC)OC(C(C)C)CCC Chemical compound CC(C)C(CCC)O[Zr](OC(C(C)C)CCC)(OC(C(C)C)CCC)OC(C(C)C)CCC QJWSESNDRVMRRN-UHFFFAOYSA-N 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- YBRBMKDOPFTVDT-UHFFFAOYSA-N tert-butylamine Chemical compound CC(C)(C)N YBRBMKDOPFTVDT-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 150000004703 alkoxides Chemical class 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- IIEWJVIFRVWJOD-UHFFFAOYSA-N ethylcyclohexane Chemical compound CCC1CCCCC1 IIEWJVIFRVWJOD-UHFFFAOYSA-N 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 2
- NIJDLRJGRCHJDB-UHFFFAOYSA-N propan-2-ol;propan-2-olate;zirconium(4+) Chemical compound [Zr+4].CC(C)O.CC(C)[O-].CC(C)[O-].CC(C)[O-].CC(C)[O-] NIJDLRJGRCHJDB-UHFFFAOYSA-N 0.000 description 2
- 150000003609 titanium compounds Chemical class 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- OERNJTNJEZOPIA-UHFFFAOYSA-N zirconium nitrate Chemical compound [Zr+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O OERNJTNJEZOPIA-UHFFFAOYSA-N 0.000 description 2
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
- DUJKCHHMRIHGIW-UHFFFAOYSA-N 1-methoxy-2-methylpropan-2-olate zirconium(4+) Chemical compound COCC(C)(C)O[Zr](OC(C)(C)COC)(OC(C)(C)COC)OC(C)(C)COC DUJKCHHMRIHGIW-UHFFFAOYSA-N 0.000 description 1
- ISTJMQSHILQAEC-UHFFFAOYSA-N 2-methyl-3-pentanol Chemical compound CCC(O)C(C)C ISTJMQSHILQAEC-UHFFFAOYSA-N 0.000 description 1
- RGRUUTLDBCWYBL-UHFFFAOYSA-N 2-methylhexan-3-ol Chemical compound CCCC(O)C(C)C RGRUUTLDBCWYBL-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OPFJDXRVMFKJJO-ZHHKINOHSA-N N-{[3-(2-benzamido-4-methyl-1,3-thiazol-5-yl)-pyrazol-5-yl]carbonyl}-G-dR-G-dD-dD-dD-NH2 Chemical compound S1C(C=2NN=C(C=2)C(=O)NCC(=O)N[C@H](CCCN=C(N)N)C(=O)NCC(=O)N[C@H](CC(O)=O)C(=O)N[C@H](CC(O)=O)C(=O)N[C@H](CC(O)=O)C(N)=O)=C(C)N=C1NC(=O)C1=CC=CC=C1 OPFJDXRVMFKJJO-ZHHKINOHSA-N 0.000 description 1
- QJWWEAMHTHINQX-UHFFFAOYSA-N [Zr+4].CN(C)C([O-])C.CN(C)C([O-])C.CN(C)C([O-])C.CN(C)C([O-])C Chemical compound [Zr+4].CN(C)C([O-])C.CN(C)C([O-])C.CN(C)C([O-])C.CN(C)C([O-])C QJWWEAMHTHINQX-UHFFFAOYSA-N 0.000 description 1
- DWWVWUMGNCODHN-UHFFFAOYSA-N [Zr].C1CCCCC1 Chemical compound [Zr].C1CCCCC1 DWWVWUMGNCODHN-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000003708 ampul Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229940125810 compound 20 Drugs 0.000 description 1
- 229940126086 compound 21 Drugs 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- SRLSISLWUNZOOB-UHFFFAOYSA-N ethyl(methyl)azanide;zirconium(4+) Chemical compound [Zr+4].CC[N-]C.CC[N-]C.CC[N-]C.CC[N-]C SRLSISLWUNZOOB-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- JAXFJECJQZDFJS-XHEPKHHKSA-N gtpl8555 Chemical compound OC(=O)C[C@H](N)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1CCC[C@@H]1C(=O)N[C@H](B1O[C@@]2(C)[C@H]3C[C@H](C3(C)C)C[C@H]2O1)CCC1=CC=C(F)C=C1 JAXFJECJQZDFJS-XHEPKHHKSA-N 0.000 description 1
- 150000002362 hafnium Chemical class 0.000 description 1
- PDPJQWYGJJBYLF-UHFFFAOYSA-J hafnium tetrachloride Chemical compound Cl[Hf](Cl)(Cl)Cl PDPJQWYGJJBYLF-UHFFFAOYSA-J 0.000 description 1
- HRDRRWUDXWRQTB-UHFFFAOYSA-N hafnium(4+);propan-2-olate Chemical compound [Hf+4].CC(C)[O-].CC(C)[O-].CC(C)[O-].CC(C)[O-] HRDRRWUDXWRQTB-UHFFFAOYSA-N 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- JJWLVOIRVHMVIS-UHFFFAOYSA-N isopropylamine Chemical compound CC(C)N JJWLVOIRVHMVIS-UHFFFAOYSA-N 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- LCGLNKUTAGEVQW-UHFFFAOYSA-N methyl monoether Natural products COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- ZGSOBQAJAUGRBK-UHFFFAOYSA-N propan-2-olate;zirconium(4+) Chemical compound [Zr+4].CC(C)[O-].CC(C)[O-].CC(C)[O-].CC(C)[O-] ZGSOBQAJAUGRBK-UHFFFAOYSA-N 0.000 description 1
- 238000000425 proton nuclear magnetic resonance spectrum Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- BHRZNVHARXXAHW-UHFFFAOYSA-N sec-butylamine Chemical compound CCC(C)N BHRZNVHARXXAHW-UHFFFAOYSA-N 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical group [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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-
- 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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
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- 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
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/28—Titanium compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/02—Monohydroxylic acyclic alcohols
- C07C31/125—Monohydroxylic acyclic alcohols containing five to twenty-two carbon atoms
-
- 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
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/003—Compounds containing elements of Groups 4 or 14 of the Periodic Table without C-Metal linkages
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- 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
- C23C16/22—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 inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
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- 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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02172—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides
- H01L21/02175—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal
- H01L21/02181—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal the material containing hafnium, e.g. HfO2
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
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- H01L21/02175—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02172—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides
- H01L21/02175—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal
- H01L21/02189—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal the material containing zirconium, e.g. ZrO2
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Definitions
- the present invention relates to a zirconium alkoxide compound, a hafnium alkoxide compound, or a titanium alkoxide compound that can be used in forming a zirconium, hafnium, or titanium-containing thin film.
- the present invention also provides a chemical vapor deposition method (Chemical Vapor Deposition method; hereinafter referred to as a CVD method) and an atomic layer deposition method (Atomic Layer Deposition method) using a zirconium alkoxide compound, a hafnium alkoxide compound or a titanium alkoxide compound;
- the present invention relates to a method for producing a metal-containing thin film by ALD).
- zirconium compound examples include inorganic zirconium compounds such as zirconium tetrachloride (for example, see Non-patent Document 1) and zirconium nitrate (for example, see Non-Patent Document 2); tetrakis (t-butoxide) zirconium (for example, Non-patent document 3), tetrakis (1-methoxy-2-methyl-2-propoxy) zirconium (for example, refer to non-patent document 4), tetrakis (dimethylaminoethoxide) zirconium (for example, refer to non-patent document 5), Zirconium alkoxide compounds such as tetrakis (2-methyl-3-butene-2-oxide) zirconium (for example, see Patent Document 1); Zirconamide compounds such as tetrakis (ethylmethylamino) zirconium (for example, see Non-Patent Document 6) ; Tetrakis (
- hafnium compound for example, bis (methylcyclopentadienyl) hafnium dimethyl is known (for example, see Patent Document 4).
- hafnium compounds and titanium compounds hafnium complexes and titanium complexes having ⁇ -diketonato having an alkoxyalkylmethyl group and alkoxy as ligands are known (see, for example, Patent Document 5).
- a metal compound used in a CVD method or an ALD method has a high vapor pressure and a low melting point (preferably liquid or gaseous at room temperature) as its physical properties. Yes.
- the inorganic metal compound and ⁇ -diketonato metal compound both have a low vapor pressure and a high melting point. I did not come to do.
- metal alkoxide compounds and metal amide compounds have also disclosed several metal compounds having a high vapor pressure.
- a higher boiling point can be obtained by multidentate coordination or multimerization exceeding four coordinations. Some have higher melting points.
- metal compounds compounds that have achieved monomerization, that is, metal compounds having a high vapor pressure and a low melting point have been found.
- these metal compounds are both low in thermal stability and have a problem that they are decomposed during the synthesis or production of the metal thin film, and further, there are problems such as carbon being mixed as an impurity by decomposition. It was happening.
- the object of the present invention is to solve the above problems, have a low melting point, a high vapor pressure, excellent heat stability, and suitable for the production of metal-containing thin films by CVD and ALD methods.
- the object is to provide a metal alkoxide compound.
- the subject of this invention is also providing the manufacturing method of the metal containing thin film using the said metal alkoxide compound.
- the present invention relates to the following matters.
- a method for producing a metal-containing thin film by chemical vapor deposition using the metal alkoxide compound according to 1 or a solution of the metal alkoxide compound according to 1 and a nitrogen source is provided.
- a metal alkoxide compound useful for forming a metal-containing thin film can be provided.
- the metal alkoxide compound of the present invention has a low melting point and a high vapor pressure, is excellent in heat stability, and is particularly suitable for the production of a metal-containing thin film by a CVD method or an ALD method.
- a metal-containing thin film can be produced with good film forming characteristics by a CVD method or an ALD method.
- the metal alkoxide compound of the present invention is represented by the general formula (1).
- M represents zirconium, hafnium or titanium.
- Rs may be the same or different and each independently represents a linear or branched alkyl group having 2 to 6, preferably 2 to 4, particularly preferably 2 to 3, carbon atoms.
- R is, for example, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, a t-butyl group, a pentyl group or a hexyl group, preferably an ethyl group, an n-propyl group or an isopropyl group. is there.
- a compound in which four R's are the same can be synthesized relatively easily and is preferable in that respect.
- metal alkoxide compound of the present invention include compounds represented by formulas (2) to (10).
- M represents zirconium, hafnium or titanium.
- the metal alkoxide compound of the present invention can be produced by an alkoxy exchange reaction with reference to a known method.
- the metal alkoxide compound In the CVD method and the ALD method, it is necessary to vaporize the metal alkoxide compound in order to form the metal-containing thin film.
- the metal alkoxide compound of the present invention for example, the metal alkoxide compound itself is filled in the vaporization chamber.
- a metal alkoxide compound in an appropriate solvent for example, aliphatic hydrocarbons such as hexane, methylcyclohexane, ethylcyclohexane, and octane; aromatic hydrocarbons such as toluene; (Ethers such as butyl ether can be used.
- aliphatic hydrocarbons such as hexane, methylcyclohexane, ethylcyclohexane, and octane
- aromatic hydrocarbons such as toluene
- Ether such as butyl ether
- a known CVD method and ALD method can be used as a method for depositing a metal-containing film on an object to be formed.
- a metal alkoxide compound is converted into an oxygen source (for example, oxygen gas) under normal pressure or reduced pressure. , Ozone gas, etc.), or a nitrogen source (for example, ammonia gas, nitrogen gas, etc.) or a method of vapor-depositing a metal-containing film by feeding it onto a substrate heated alternately or alternately can be used.
- a method of depositing a metal-containing thin film by feeding it onto a substrate heated with an inert gas (for example, argon gas or helium gas) can be used.
- membrane by plasma CVD method can also be used.
- the content ratio of oxygen gas to the total gas amount is preferably 0.1 to 99% by volume, more preferably 0.5 to 95% by volume.
- the pressure in the reaction system is preferably 1 Pa to 200 kPa, more preferably 10 Pa to 110 kPa, and the film formation target temperature. Is preferably 150 to 700 ° C., more preferably 200 to 600 ° C., and the temperature for vaporizing the metal alkoxide compound is preferably 20 to 250 ° C., more preferably 40 to 200 ° C.
- a metal-containing thin film is produced by a CVD method and an ALD method using a metal alkoxide compound of the present invention or a solvent solution of a metal alkoxide compound and an oxygen source (especially oxygen gas and ozone gas are preferred).
- a metal-containing thin film is produced by a CVD method and an ALD method using a metal alkoxide compound of the present invention or a solvent solution of a metal alkoxide compound and a nitrogen source (particularly, ammonia gas and nitrogen gas are preferred).
- a metal-containing thin film is produced by a CVD method using the metal alkoxide compound of the present invention or a solvent solution of the metal alkoxide compound and an inert gas (especially, argon gas or helium gas is preferable).
- tetrakis (isopropoxy) zirconium-isopropanol adduct 5.11 g (13.17 mmol) and 2,4-dimethyl-3-pentanol 10 .12 g (88.61 mmol) was added, the liquid temperature was raised to 170 ° C., and the reaction was carried out at the same temperature for 30 minutes while distilling off the produced isopropanol.
- reaction solution was concentrated under reduced pressure, and the concentrate was distilled under reduced pressure (150 ° C., 12 Pa) to obtain 5.73 g of tetrakis (2,4-dimethyl-3-pentoxy) zirconium as a low-viscosity transparent liquid. (Isolated yield; 79%).
- Tetrakis (2,4-dimethyl-3-pentoxy) zirconium is a novel compound represented by the following physical property values.
- tetrakis (isopropoxy) zirconium / isopropanol adduct 4.42 g (11.41 mmol) and 2-methyl-3-pentanol 7.29 g (71.36 mmol) was added, the liquid temperature was raised to 170 ° C., and the reaction was carried out at the same temperature for 30 minutes while distilling off the produced isopropanol.
- reaction solution was concentrated under reduced pressure, and the concentrate was distilled under reduced pressure (140 ° C., 17 Pa) to obtain 4.18 g of tetrakis (2-methyl-3-pentoxy) zirconium as a white solid (simple (Separation yield; 74%).
- Tetrakis (2-methyl-3-pentoxy) zirconium is a novel compound represented by the following physical property values.
- tetrakis (isopropoxy) zirconium-isopropanol adduct 4.32 g (11.15 mmol) and 2-methyl-3-hexanol 9.17 g ( 78.91 mmol) was added, the liquid temperature was raised to 200 ° C., and the resulting isopropanol was distilled off, followed by reaction at the same temperature for 30 minutes.
- reaction solution was concentrated under reduced pressure, and the concentrate was distilled under reduced pressure (150 ° C., 12 Pa) to obtain 4.20 g of tetrakis (2-methyl-3-hexoxy) zirconium as a low-viscosity transparent liquid. (Isolation yield; 68%).
- Tetrakis (2-methyl-3-hexoxy) zirconium is a novel compound represented by the following physical property values.
- the zirconium compounds of the formulas (11) to (15) could not be recovered by thermal decomposition by redistillation, whereas the zirconium alkoxide compounds of the present invention (formulas (2) to (4)) (Zirconium compound) has a redistillation recovery rate of 97 to 99%, indicating that it is excellent in thermal stability. Furthermore, regardless of the molecular weight, the zirconium alkoxide compound of the present invention can be distilled at a low temperature and a low degree of vacuum, which indicates that it is suitable for the production of a zirconium-containing thin film.
- Example 7 and Comparative Example 6 thermo stability comparison 2; heat treatment test
- a thermal stability comparison test was performed on the zirconium compound of the formula (4) obtained in Example 1 and tetrakis (t-butoxide) zirconium (zirconium alkoxide compound of Non-Patent Document 3). After each compound was heated at 250 ° C. for 10 hours in an argon atmosphere, the degree of decomposition of the heat-treated zirconium alkoxide compound was observed by 1 H-NMR, and redistilled to confirm the recovery rate. Each result was compared. The results are shown in Table 2.
- zirconium alkoxide compound of the present invention did not change in color even after heat treatment, and no change was observed in the 1 H-NMR spectrum pattern. The recovery rate by redistillation was 98%.
- the zirconium alkoxide compound of the present invention has high stability to heat.
- the ALD method film formation is performed by repeating compound adsorption onto a substrate and reaction with a reactive gas (for example, oxygen gas or ozone gas).
- a reactive gas for example, oxygen gas or ozone gas.
- the zirconium alkoxide compound of the present invention has a high thermal stability in an argon gas atmosphere (inert gas atmosphere) from the result of the heat treatment test, and therefore does not thermally decompose on the substrate. This suggests that it can be used more favorably in the ALD method.
- tetrakis (t-butoxide) zirconium zirconium alkoxide compound of Non-Patent Document 3 is altered and decomposed in the heat treatment test, suggesting that it is easily pyrolyzed on the substrate. Is unsuitable.
- Examples 8 to 9 (deposition experiment; production of zirconium-containing thin film) Using the zirconium alkoxide compounds of the formulas (4) and (3) obtained in Examples 1 and 3, a vapor deposition experiment by the CVD method was performed to evaluate the film forming characteristics.
- the apparatus shown in FIG. 1 was used for the evaluation test.
- the zirconium alkoxide compound 20 in the vaporizer 3 (glass ampoule) is heated and vaporized by the heater 10B, exits the vaporizer 3 along with the helium gas introduced after preheating by the preheater 10A via the mass flow controller 1A.
- the gas exiting the vaporizer 3 is introduced into the reactor 4 together with the oxygen gas introduced through the mass flow controller 1B and the stop valve 2.
- the pressure in the reaction system is controlled to a predetermined pressure by opening and closing the valve 6 in front of the vacuum pump, and is monitored by the pressure gauge 5.
- the central part of the reactor has a structure that can be heated by a heater 10C.
- the zirconium alkoxide compound introduced into the reactor is set at the center in the reactor, and is oxidized and pyrolyzed on the surface of the deposition substrate 21 heated to a predetermined temperature by the heater 10C, and a zirconium-containing thin film is formed on the substrate 21. Precipitates.
- the gas exiting the reactor 4 is exhausted to the atmosphere via a trap 7 and a vacuum pump.
- Deposition conditions and deposition results (film characteristics) are shown in Table 3. Note that a 6 mm ⁇ 20 mm rectangular substrate was used as the deposition substrate.
- the zirconium alkoxide compound of the present invention (compounds of formulas (3) and (4)) showed excellent film forming characteristics in an oxygen atmosphere.
- a 100 ml flask equipped with a stirrer and a thermometer in an argon atmosphere, 5.15 g (10.84 mmol) of tetrakis (isopropoxy) hafnium / isopropanol adduct and 2,4-dimethyl-3-pentanol 10 0.000 g (86.06 mmol) was added, the temperature of the solution was raised to 170 ° C., and the resulting isopropanol was distilled off and reacted at the same temperature for 30 minutes.
- reaction solution was concentrated under reduced pressure, and the concentrate was distilled under reduced pressure (150 ° C., 17 Pa) to obtain 4.94 g of tetrakis (2,4-dimethyl-3-pentoxy) hafnium as a low-viscosity transparent liquid. (Isolated yield; 71.3%).
- Tetrakis (2,4-dimethyl-3-pentoxy) hafnium is a novel compound represented by the following physical property values.
- Example 11 thermo stability; heat treatment test
- Distillation was performed again to confirm the thermal stability of the hafnium compound of the formula (4) obtained in Example 10 (present invention), and the recovery rate was confirmed. Further, after heating at 250 ° C. for 10 hours in an argon atmosphere, the degree of decomposition of the heat-treated hafnium compound was observed by 1 H-NMR, and redistillation was performed to confirm the recovery rate. The results were as follows.
- Redistillation recovery rate 99% Before heat treatment; after heat treatment of colorless and transparent liquid; redistillation recovery rate after heat treatment of colorless and transparent liquid; 97% 1 H-NMR after heat treatment (CDCl 3 , ⁇ (ppm)); no change
- the metal alkoxide compound of the present invention has excellent thermal stability and is a useful compound particularly when a metal-containing film is produced by a CVD method or an ALD method.
- a stirrer and a thermometer 5.00 g (17.59 mmol) of tetrakis (isopropoxy) titanium and 10.00 g (86 of 2,4-dimethyl-3-pentanol) were added in an argon atmosphere. 0.06 mmol) was added, the liquid temperature was raised to 170 ° C., and the resulting isopropanol was distilled off, and the mixture was reacted at the same temperature for 30 minutes.
- reaction solution was concentrated under reduced pressure, and the concentrate was distilled under reduced pressure (160 ° C., 21 Pa) to obtain 6.50 g of tetrakis (2,4-dimethyl-3-pentoxy) titanium as a colorless transparent solid. (Isolated yield; 72.6%).
- Tetrakis (2,4-dimethyl-3-pentoxy) titanium is a novel compound represented by the following physical property values.
- a stirrer and a thermometer 4.02 g (17.25 mmol) of zirconium tetrachloride and 50 ml of methylcyclohexane were weighed in an argon atmosphere, and 12 ml (140.08 mmol) of isopropylamine under water cooling. was dripped.
- zirconium compound of formula (4) In a 50-ml flask equipped with a stirrer and a thermometer, 4.12 g (17.68 mmol) of zirconium tetrachloride and 25 ml of methylcyclohexane were weighed in an argon atmosphere, and 13 ml (128.51 mmol) of sec-butylamine under water cooling. ) was added dropwise.
- a 100 ml flask equipped with a stirrer and a thermometer 4.20 g (18.02 mmol) of zirconium tetrachloride and 50 ml of toluene were weighed in an argon atmosphere, and 23.5 ml (224.22 ml) of tert-butylamine under water cooling. 91 mmol) was added dropwise.
- 4.20 g (18.02 mmol) of zirconium tetrachloride and 50 ml of toluene were weighed in an argon atmosphere, and 16.5 ml (157.92 mmol) of diethylamine under water cooling. was dripped.
- a 100 ml flask equipped with a stirrer and a thermometer 4.20 g (18.02 mmol) of zirconium tetrachloride and 50 ml of toluene were weighed in an argon atmosphere, and diethylamine was adjusted so that the temperature in the system was ⁇ 10 ° C. or lower. 16.0 ml (153.13 mmol) was added dropwise.
- a 100-ml flask equipped with a stirrer and a thermometer 4.20 g (18.02 mmol) of zirconium tetrachloride and 50 ml of toluene are weighed in an argon atmosphere, and dimethyl dimethyl ether is used so that the temperature in the system is ⁇ 10 ° C. or lower. 11.61 g (257.54 mmol) of amine was added dropwise.
- 5.03 g (15.71 mmol) of hafnium tetrachloride and 50 ml of toluene were weighed in an argon atmosphere, and 10 ml (95.71 mmol) of tert-butylamine under water cooling. was dripped.
- a 100-ml flask equipped with a stirrer and a thermometer 5.85 g (30.84 mmol) of titanium tetrachloride and 50 ml of toluene were weighed in an argon atmosphere, and 16 ml (153.13 mmol) of tert-butylamine under water cooling. was dripped.
- a metal alkoxide compound that is useful particularly when a metal-containing thin film is formed by a CVD method or an ALD method. Moreover, the method of manufacturing a metal containing thin film using the said metal alkoxide compound can also be provided.
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Abstract
Description
で示される金属アルコキシド化合物。
(1)本願発明の金属アルコキシド化合物又は金属アルコキシド化合物の溶媒溶液と酸素源(特に、酸素ガス、オゾンガスが好ましい)とを用いてCVD法及びALD法により金属含有薄膜を製造する。
(2)本願発明の金属アルコキシド化合物又は金属アルコキシド化合物の溶媒溶液と窒素源(特に、アンモニアガス、窒素ガスが好ましい)とを用いてCVD法及びALD法により金属含有薄膜を製造する。
(3)本願発明の金属アルコキシド化合物又は金属アルコキシド化合物の溶媒溶液と不活性ガス(特に、アルゴンガス、ヘリウムガスが好ましい)とを用いてCVD法により金属含有薄膜を製造する。
攪拌装置及び温度計を備えた内容積100mlのフラスコに、アルゴン雰囲気にて、テトラキス(イソプロポキシ)ジルコニウム・イソプロパノール付加体5.11g(13.17mmol)及び2,4-ジメチル-3-ペンタノール10.12g(88.61mmol)を加え、液温を170℃まで昇温し、生成したイソプロパノールを留去しながら、同温度で30分間反応させた。反応終了後、反応液を減圧下で濃縮した後、濃縮物を減圧蒸留(150℃、12Pa)し、低粘性の透明液体として、テトラキス(2,4-ジメチル-3-ペントキシ)ジルコニウム5.73gを得た(単離収率;79%)。
元素分析:C28H60O4Zr
測定値 C:60.5%、H:11.1%、Zr:16.5%
理論値 C:60.9%、H:11.0%、Zr:16.5%
攪拌装置及び温度計を備えた内容積100mlのフラスコに、アルゴン雰囲気にて、テトラキス(イソプロポキシ)ジルコニウム・イソプロパノール付加体4.42g(11.41mmol)及び2-メチル-3-ペンタノール7.29g(71.36mmol)を加え、液温を170℃まで昇温し、生成したイソプロパノールを留去しながら、同温度で30分間反応させた。反応終了後、反応液を減圧下で濃縮した後、濃縮物を減圧蒸留(140℃、17Pa)し、白色固体として、テトラキス(2-メチル-3-ペントキシ)ジルコニウム4.18gを得た(単離収率;74%)。
元素分析:C24H52O4Zr
測定値 C:58.3%、H:10.4%、Zr:18.4%
理論値 C:58.1%、H:10.6%、Zr:18.4%
攪拌装置及び温度計を備えた内容積100mlのフラスコに、アルゴン雰囲気にて、テトラキス(イソプロポキシ)ジルコニウム・イソプロパノール付加体4.32g(11.15mmol)及び2-メチル-3-ヘキサノール9.17g(78.91mmol)を加え、液温を200℃まで昇温し、生成したイソプロパノールを留去しながら、同温度で30分間反応させた。反応終了後、反応液を減圧下で濃縮した後、濃縮物を減圧蒸留(150℃、12Pa)し、低粘性の透明液体として、テトラキス(2-メチル-3-ヘキソキシ)ジルコニウム4.20gを得た(単離収率;68%)。
元素分析:C28H60O4Zr
測定値 C:60.7%、H:11.3%、Zr:16.5%
理論値 C:60.9%、H:11.0%、Zr:16.5%
実施例1~3で得られた式(2)~(4)の本発明のジルコニウム化合物と、比較として合成した式(11)~(15)のジルコニウム化合物について、それぞれの熱安定性を確認するため、一度蒸留を行った各化合物について再度蒸留を行い、その回収率を確認した。その結果を表1に示す。なお、化合物の構造を下記式に示す。但し、式中、Mはジルコニウム(Zr)を示す。
実施例1で得られた式(4)のジルコニウム化合物と、テトラキス(t-ブトキシド)ジルコニウム(非特許文献3のジルコニウムアルコキシド化合物)について、熱安定性の比較試験を行った。それぞれの化合物を、アルゴン雰囲気で250℃にて10時間加熱した後、熱処理後のジルコニウムアルコキシド化合物について、1H-NMRにより分解具合を観察し、また、再蒸留を行い、その回収率を確認し、それぞれの結果を比較した。その結果を表2に示した。
実施例1及び3で得られた式(4)及び(3)のジルコニウムアルコキシド化合物を用いて、CVD法による蒸着実験を行い、成膜特性を評価した。
攪拌装置及び温度計を備えた内容積100mlのフラスコに、アルゴン雰囲気にて、テトラキス(イソプロポキシ)ハフニウム・イソプロパノール付加体5.15g(10.84mmol)及び2,4-ジメチル-3-ペンタノール10.00g(86.06mmol)を加え、液温を170℃まで昇温し、生成したイソプロパノールを留去しながら、同温度で30分間反応させた。反応終了後、反応液を減圧下で濃縮した後、濃縮物を減圧蒸留(150℃、17Pa)し、低粘性の透明液体として、テトラキス(2,4-ジメチル-3-ペントキシ)ハフニウム4.94gを得た(単離収率;71.3%)。
元素分析:C28H60O4Hf
測定値 C:53.0%、H:9.7%、Hf:27.7%
理論値 C:52.6%、H:9.5%、Hf:27.9%
実施例10で得られた式(4)のハフニウム化合物(本発明)の熱安定性を確認するために再度蒸留を行い、その回収率を確認した。また、アルゴン雰囲気で250℃にて10時間加熱した後、熱処理後のハフニウム化合物について、1H-NMRにより分解具合を観察し、また、再蒸留を行い、その回収率を確認した。その結果は以下の通りであった。
再蒸留回収率;99%
熱処理前;無色透明液体
熱処理後;無色透明液体
熱処理後の再蒸留回収率;97%
熱処理後の1H-NMR(CDCl3,δ(ppm));変化なし
攪拌装置及び温度計を備えた内容積100mlのフラスコに、アルゴン雰囲気にて、テトラキス(イソプロポキシ)チタニウム5.00g(17.59mmol)及び2,4-ジメチル-3-ペンタノール10.00g(86.06mmol)を加え、液温を170℃まで昇温し、生成したイソプロパノールを留去しながら、同温度で30分間反応させた。反応終了後、反応液を減圧下で濃縮した後、濃縮物を減圧蒸留(160℃、21Pa)し、無色透明固体として、テトラキス(2,4-ジメチル-3-ペントキシ)チタニウム6.50gを得た(単離収率;72.6%)。
1H-NMR(CDCl3,δ(ppm));0.93(48H,m)、1.71(8H,m)、3.70(4H,m)
元素分析:C28H60O4Ti
測定値 C:66.3%、H:12.2%、Ti:9.3%
理論値 C:66.1%、H:11.9%、Ti:9.4%
攪拌装置及び温度計を備えた内容積100mlのフラスコに、アルゴン雰囲気にて、四塩化ジルコニウム4.02g(17.25mmol)及びメチルシクロヘキサン50mlを秤量し、水冷下でイソプロピルアミン12ml(140.08mmol)を滴下した。次に2,4-ジメチル-3-ペンタノール12ml(85.61mmol)を滴下して1時間反応させた後、反応液をろ過し、ろ液を濃縮した。濃縮物を減圧蒸留(160℃、13Pa)し、低粘性の透明液体として、テトラキス(2,4-ジメチル-3-ペントキシ)ジルコニウム7.71gを得た(単離収率;81.0%)。
攪拌装置及び温度計を備えた内容積50mlのフラスコに、アルゴン雰囲気にて、四塩化ジルコニウム4.12g(17.68mmol)及びメチルシクロヘキサン25mlを秤量し、水冷下でsec-ブチルアミン13ml(128.51mmol)を滴下した。この溶液を2,4-ジメチル-3-ペンタノール9.88g(85.03mmol)及びメチルシクロヘキサン25mlを仕込んだ攪拌装置及び温度計を備えた内容積100mlのフラスコに滴下して1時間反応させた。反応液をろ過し、ろ液を濃縮した。濃縮物を減圧蒸留(160℃、15Pa)し、低粘性の透明液体として、テトラキス(2,4-ジメチル-3-ペントキシ)ジルコニウム8.05gを得た(単離収率;82.5%)。
攪拌装置及び温度計を備えた内容積100mlのフラスコに、アルゴン雰囲気にて、四塩化ジルコニウム4.20g(18.02mmol)及びトルエン50mlを秤量し、水冷下でtert-ブチルアミン23.5ml(224.91mmol)を滴下した。次に2,4-ジメチル-3-ペンタノール12ml(85.61mmol)を滴下して1時間反応させた後、反応液をろ過し、ろ液を濃縮した。濃縮物を減圧蒸留(160℃、10Pa)し、低粘性の透明液体として、テトラキス(2,4-ジメチル-3-ペントキシ)ジルコニウム7.69gを得た(単離収率;77.3%)。
攪拌装置及び温度計を備えた内容積100mlのフラスコに、アルゴン雰囲気にて、四塩化ジルコニウム4.20g(18.02mmol)及びトルエン50mlを秤量し、水冷下でジエチルアミン16.5ml(157.92mmol)を滴下した。次に2,4-ジメチル-3-ペンタノール12ml(85.61mmol)を滴下して1時間反応させた後、反応液をろ過し、ろ液を濃縮した。濃縮物を減圧蒸留(160℃、11Pa)し、低粘性の淡黄色透明液体として、テトラキス(2,4-ジメチル-3-ペントキシ)ジルコニウム7.76gを得た(単離収率;76.7%)。
攪拌装置及び温度計を備えた内容積100mlのフラスコに、アルゴン雰囲気にて、四塩化ジルコニウム4.20g(18.02mmol)及びトルエン50mlを秤量し、系内を-10℃以下となるようにジエチルアミン16.0ml(153.13mmol)を滴下した。次に2,4-ジメチル-3-ペンタノール12ml(85.61mmol)を滴下して1時間反応させた後、反応液をろ過し、ろ液を濃縮した。濃縮物を減圧蒸留(160℃、11Pa)し、低粘性の透明液体として、テトラキス(2,4-ジメチル-3-ペントキシ)ジルコニウム7.92gを得た(単離収率;79.6%)。
攪拌装置及び温度計を備えた内容積100mlのフラスコに、アルゴン雰囲気にて、四塩化ジルコニウム4.20g(18.02mmol)及びトルエン50mlを秤量し、系内を-10℃以下となるようにジメチルアミン11.61g(257.54mmol)を滴下した。次に2,4-ジメチル-3-ペンタノール12ml(85.61mmol)を滴下して1時間反応させた後、反応液をろ過し、ろ液を濃縮した。濃縮物を減圧蒸留(160℃、11Pa)し、低粘性の透明液体として、テトラキス(2,4-ジメチル-3-ペントキシ)ジルコニウム7.81gを得た(単離収率;76.3%)。
攪拌装置及び温度計を備えた内容積100mlのフラスコに、アルゴン雰囲気にて、四塩化ハフニウム5.03g(15.71mmol)及びトルエン50mlを秤量し、水冷下でtert-ブチルアミン10ml(95.71mmol)を滴下した。次に2,4-ジメチル-3-ペンタノール10ml(71.34mmol)を滴下して1時間反応させた後、反応液をろ過し、ろ液を濃縮した。濃縮物を減圧蒸留(170℃、19Pa)し、低粘性の透明液体として、テトラキス(2,4-ジメチル-3-ペントキシ)ハフニウム3.50gを得た(単離収率;34.9%)。
攪拌装置及び温度計を備えた内容積100mlのフラスコに、アルゴン雰囲気にて、四塩化チタン5.85g(30.84mmol)及びトルエン50mlを秤量し、水冷下でtert-ブチルアミン16ml(153.13mmol)を滴下した。次に2,4-ジメチル-3-ペンタノール17.5ml(124.85mmol)を滴下して1時間反応させた後、反応液をろ過し、ろ液を濃縮した。濃縮物を減圧蒸留(160℃、17Pa)し、透明固体として、テトラキス(2,4-ジメチル-3-ペントキシ)チタニウム8.81gを得た(単離収率;56.2%)。
1B マスフローコントローラー
2 ストップバルブ
3 気化器
4 反応器
5 圧力計
6 バルブ
7 トラップ
8 ストップバルブ
10A 予熱器
10B 気化器ヒーター
10C 反応器ヒーター
20 金属アルコキシド化合物
21 基板
Claims (6)
- 請求項1に記載の金属アルコキシド化合物又は請求項1に記載の金属アルコキシド化合物の溶液を金属供給源として用いた化学気相蒸着法による金属含有薄膜の製造法。
- 請求項1に記載の金属アルコキシド化合物又は請求項1に記載の金属アルコキシド化合物の溶液と、酸素源とを用いた請求項2記載の化学気相蒸着法による金属含有薄膜の製造法。
- 請求項1に記載の金属アルコキシド化合物又は請求項1に記載の金属アルコキシド化合物の溶液と、窒素源とを用いた請求項2記載の化学気相蒸着法による金属含有薄膜の製造法。
- 請求項1に記載の金属アルコキシド化合物又は請求項1に記載の金属アルコキシド化合物の溶液と、不活性ガスとを用いた請求項2記載の化学気相蒸着法による金属含有薄膜の製造法。
- 前記金属アルコキシド化合物の溶液の溶媒が、脂肪族炭化水素類、芳香族炭化水素類及びエーテル類からなる群より選ばれる少なくとも1種である請求項2乃至5記載の化学気相蒸着法による金属含有薄膜の製造法。
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JP2012201629A (ja) * | 2011-03-25 | 2012-10-22 | Ube Industries Ltd | 高純度ジルコニウムアルコキシド原料及びその製造方法、並びに当該原料の分析方法 |
CN110891897A (zh) * | 2017-03-29 | 2020-03-17 | 艾合知识产权控股有限公司 | 用于增加材料中的氢捕集空位的方法 |
WO2022107768A1 (ja) * | 2020-11-19 | 2022-05-27 | 株式会社Adeka | 薄膜の製造方法 |
US12201685B2 (en) | 2012-06-15 | 2025-01-21 | Pds Biotechnology Corporation | Methods of modulating immune responses with cationic lipid vaccine compositions |
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JP2000219969A (ja) * | 1999-02-01 | 2000-08-08 | Mitsubishi Materials Corp | 有機タンタル化合物及びこれを含む有機金属化学蒸着用原料並びにこれから作られるタンタル含有薄膜 |
JP2003221672A (ja) * | 2002-01-29 | 2003-08-08 | Dainippon Printing Co Ltd | 酸化チタン薄膜とその製造方法及び酸化チタン薄膜の積層体 |
WO2005116292A1 (ja) * | 2004-05-26 | 2005-12-08 | Adeka Corporation | 化学気相成長用原料及び薄膜の製造方法 |
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JP2000219969A (ja) * | 1999-02-01 | 2000-08-08 | Mitsubishi Materials Corp | 有機タンタル化合物及びこれを含む有機金属化学蒸着用原料並びにこれから作られるタンタル含有薄膜 |
JP2003221672A (ja) * | 2002-01-29 | 2003-08-08 | Dainippon Printing Co Ltd | 酸化チタン薄膜とその製造方法及び酸化チタン薄膜の積層体 |
WO2005116292A1 (ja) * | 2004-05-26 | 2005-12-08 | Adeka Corporation | 化学気相成長用原料及び薄膜の製造方法 |
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JP2012201629A (ja) * | 2011-03-25 | 2012-10-22 | Ube Industries Ltd | 高純度ジルコニウムアルコキシド原料及びその製造方法、並びに当該原料の分析方法 |
US12201685B2 (en) | 2012-06-15 | 2025-01-21 | Pds Biotechnology Corporation | Methods of modulating immune responses with cationic lipid vaccine compositions |
CN110891897A (zh) * | 2017-03-29 | 2020-03-17 | 艾合知识产权控股有限公司 | 用于增加材料中的氢捕集空位的方法 |
WO2022107768A1 (ja) * | 2020-11-19 | 2022-05-27 | 株式会社Adeka | 薄膜の製造方法 |
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