WO2003064437A1 - Complexes de cuivre et procede de fabrication de films minces contenant du cuivre au moyen desdits complexes de cuivre - Google Patents
Complexes de cuivre et procede de fabrication de films minces contenant du cuivre au moyen desdits complexes de cuivre Download PDFInfo
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- WO2003064437A1 WO2003064437A1 PCT/JP2003/001014 JP0301014W WO03064437A1 WO 2003064437 A1 WO2003064437 A1 WO 2003064437A1 JP 0301014 W JP0301014 W JP 0301014W WO 03064437 A1 WO03064437 A1 WO 03064437A1
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- Prior art keywords
- copper
- carbon atoms
- copper complex
- complex according
- group
- Prior art date
Links
- 239000010949 copper Substances 0.000 title claims abstract description 73
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 59
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 239000010409 thin film Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims description 30
- 230000015572 biosynthetic process Effects 0.000 title description 22
- 150000001879 copper Chemical class 0.000 title description 4
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 26
- 150000001875 compounds Chemical class 0.000 claims abstract description 23
- 238000005229 chemical vapour deposition Methods 0.000 claims abstract description 16
- 239000003446 ligand Substances 0.000 claims abstract description 15
- 125000002947 alkylene group Chemical group 0.000 claims abstract description 9
- 150000004699 copper complex Chemical class 0.000 claims description 67
- 125000004432 carbon atom Chemical group C* 0.000 claims description 29
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 7
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 125000001424 substituent group Chemical group 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 5
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical compound [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 abstract description 3
- 239000001257 hydrogen Substances 0.000 abstract description 2
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 45
- 238000006243 chemical reaction Methods 0.000 description 36
- -1 organic acid ester Chemical class 0.000 description 32
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 30
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 16
- 239000002904 solvent Substances 0.000 description 16
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 14
- 238000003786 synthesis reaction Methods 0.000 description 14
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 10
- 239000005751 Copper oxide Substances 0.000 description 10
- 229910000431 copper oxide Inorganic materials 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 239000000758 substrate Substances 0.000 description 9
- 238000000921 elemental analysis Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000005481 NMR spectroscopy Methods 0.000 description 7
- 238000004440 column chromatography Methods 0.000 description 7
- 229960003280 cupric chloride Drugs 0.000 description 7
- 238000000151 deposition Methods 0.000 description 6
- 125000005594 diketone group Chemical group 0.000 description 6
- 238000004821 distillation Methods 0.000 description 6
- 239000010408 film Substances 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper hydroxide Chemical compound [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 description 5
- 239000005750 Copper hydroxide Substances 0.000 description 5
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 5
- 229910001956 copper hydroxide Inorganic materials 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000000741 silica gel Substances 0.000 description 5
- 229910002027 silica gel Inorganic materials 0.000 description 5
- ODZPKZBBUMBTMG-UHFFFAOYSA-N sodium amide Chemical compound [NH2-].[Na+] ODZPKZBBUMBTMG-UHFFFAOYSA-N 0.000 description 5
- 239000006200 vaporizer Substances 0.000 description 5
- 230000002378 acidificating effect Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000007740 vapor deposition Methods 0.000 description 4
- 230000008016 vaporization Effects 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 3
- XMGZWGBXVLJOKE-UHFFFAOYSA-N acetic acid;toluene Chemical compound CC(O)=O.CC1=CC=CC=C1 XMGZWGBXVLJOKE-UHFFFAOYSA-N 0.000 description 3
- 238000004587 chromatography analysis Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000012024 dehydrating agents Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- DGCTVLNZTFDPDJ-UHFFFAOYSA-N heptane-3,5-dione Chemical compound CCC(=O)CC(=O)CC DGCTVLNZTFDPDJ-UHFFFAOYSA-N 0.000 description 3
- 150000002576 ketones Chemical class 0.000 description 3
- 239000012044 organic layer Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000001632 sodium acetate Substances 0.000 description 3
- 235000017281 sodium acetate Nutrition 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000001308 synthesis method Methods 0.000 description 3
- 238000005979 thermal decomposition reaction Methods 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- SYBYTAAJFKOIEJ-UHFFFAOYSA-N 3-Methylbutan-2-one Chemical compound CC(C)C(C)=O SYBYTAAJFKOIEJ-UHFFFAOYSA-N 0.000 description 2
- KOAWAWHSMVKCON-UHFFFAOYSA-N 6-[difluoro-(6-pyridin-4-yl-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methyl]quinoline Chemical compound C=1C=C2N=CC=CC2=CC=1C(F)(F)C(N1N=2)=NN=C1C=CC=2C1=CC=NC=C1 KOAWAWHSMVKCON-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910000104 sodium hydride Inorganic materials 0.000 description 2
- 239000012312 sodium hydride Substances 0.000 description 2
- 238000005160 1H NMR spectroscopy Methods 0.000 description 1
- RJPPUYVYZJSENI-UHFFFAOYSA-N 2-methyl-2-trimethylsilyloxypropanoic acid Chemical compound OC(=O)C(C)(C)O[Si](C)(C)C RJPPUYVYZJSENI-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000003708 ampul Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 210000003323 beak Anatomy 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000007810 chemical reaction solvent Substances 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229930002839 ionone Natural products 0.000 description 1
- 150000002499 ionone derivatives Chemical class 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- LZFDOCGPXDEJNG-UHFFFAOYSA-N methyl 2-methyl-2-trimethylsilyloxypropanoate Chemical compound COC(=O)C(C)(C)O[Si](C)(C)C LZFDOCGPXDEJNG-UHFFFAOYSA-N 0.000 description 1
- 229940017219 methyl propionate Drugs 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000410 reductive pyrolysis Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
Classifications
-
- 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
- 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
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
-
- 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
- C07F1/00—Compounds containing elements of Groups 1 or 11 of the Periodic Table
- C07F1/08—Copper 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
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
Definitions
- the present invention is advantageous when forming a thin film containing copper such as a thin film of a metal such as copper or a copper-containing alloy or a thin film of a composite oxide containing copper oxide as one component by a chemical vapor deposition method. It relates to the copper complex used.
- the present invention also relates to a method for producing a metal thin film such as copper or a copper-containing alloy or a composite oxide thin film containing copper oxide as a component using the copper complex.
- Copper thin films are used for copper wiring of silicon semiconductors.
- Metal oxide thin films containing copper oxide as a component are expected to be applied as materials for high-temperature superconductors.
- CVD Chemical vapor deposition
- a ⁇ -diketonato copper complex is often used as a raw material for forming a metal copper or copper oxide thin film by the CVD method.
- Japanese Patent Publication No. 5-59551 discloses a method of forming a copper thin film used as a copper wiring of a silicon semiconductor by using a monovalent copper /?-Diketonato complex as a copper source. Is disclosed.
- the monovalent copper /?-Diketonato complex is capable of precipitating metallic copper using the disproportionation reaction and is a chemically convenient compound. Due to its stability, it has the drawback that a considerable part of the raw material is decomposed when heated and vaporized to obtain the vapor pressure required for the CVD method.
- Japanese Patent Application Laid-Open No. 2001-181840 discloses a diketonato of divalent copper represented by the following formula (II) which exists as a liquid at room temperature. Complexes are disclosed. This divalent copper /?-Diketonato copper complex is a viscous liquid at room temperature. Although the problem of steady supply of raw materials to the substrate and blocking of raw materials on the line is solved, the copper film The deposition rate is no different from that of the conventional dibivaloylmenato copper complex, and there is still a problem in terms of copper thin film productivity.
- An object of the present invention is to provide a copper complex having a low melting point and excellent thermal stability and suitable for forming a copper thin film or a copper oxide thin film by a CVD method.
- Another object of the present invention is to provide a method for forming a copper-containing thin film such as a copper thin film or a copper oxide thin film by a CVD method using the copper complex.
- the present inventors have found that a copper complex having a silyl ether bond and having diketonato as a ligand can be used as a copper complex that has solved the above-mentioned problems, and has completed the present invention. Therefore, the present invention resides in a divalent copper complex having a silyl ether bond and / or having diketonate as a ligand.
- the present invention also resides in a method for producing a copper-containing thin film by a chemical vapor deposition method using a bivalent copper complex having a silyl ether bond / diketonate as a ligand as a copper source.
- the /?-Diketonato ligand having a silyl ether bond is represented by the following formula:
- Z is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms
- X is a group (wherein of the formula (1-1), R a is the number of carbon atoms from 1 to 5 B , R and R d each independently represent a straight or branched alkyl group having 1 to 5 carbon atoms), and
- Y is a group represented by the formula (1-1) (wherein, R a represents a linear or branched alkylene group having 1 to 5 carbon atoms, and R b , R and R d are each independently Represents a straight-chain or branched alkyl group having 1 to 5 carbon atoms) or represents a straight-chain or branched alkyl group having 1 to 8 carbon atoms]
- the compound represented by is preferred.
- the copper complex of the present invention includes the following formula (I):
- Z is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms
- X is a group (wherein of the formula (1-1), R a is from 1 to 5 carbon atoms And R b , U and R d each independently represent a straight-chain or branched alkyl group having 1 to 5 carbon atoms), and
- Y is the formula (I- I) group (wherein represented by, R a represents a linear or branched alkylene group having 1 to 5 carbon atoms, R b, R and R d are each independently Represents a straight-chain or branched alkyl group having 1 to 5 carbon atoms) or represents a straight-chain or branched alkyl group having 1 to 8 carbon atoms]
- the compound represented by is preferred.
- X and Y are the same group. It is also desirable that Y is a linear or branched alkyl group having 1 to 8 carbon atoms.
- R a is preferably a alkylene emissions group which may having 1 to 3 carbon atom having a substituent one or more alkyl groups.
- Z is a hydrogen atom, R b , R. It is preferable that both Rd and Rd are methyl groups.
- FIG. 1 is a schematic explanatory view of a CVD apparatus that can be used for forming a copper thin film.
- silyl ether-containing /?-Diketone compound examples include compounds represented by the following formulas (III) 5 to (XIV).
- the / 5-diketone compound as described above has a base in the form of a combination of a silylated ketone and a silylated organic acid ester or a silylated organic acid ester and a ketone as shown in the following formula.
- the reaction can be carried out under an acid treatment and then obtained by a purification method such as distillation or column chromatography, or by other known methods.
- the 5-diketonato copper complex ie, the copper complex coordinated with the ⁇ -diketone enolatonion, reacts with the ⁇ -diketone and copper hydroxide (copper complex synthesis method 1 below) or the diketone enolate ionone. It can be obtained by a reaction with a copper salt such as cupric chloride (copper complex synthesis method 2 described below).
- Solvents used in the synthesis include hydrocarbons such as hexane and toluene, ethers such as tetrahydrofuran (THF) and dimethoxyethane, nitriles such as acetonitrile, halogens such as dichloromethane, and alcohols such as isopropanol. Most organic solvents can be used, such as esters such as ethyl acetate.
- the water generated in the reaction in Synthesis Method 1 may be azeotropically dehydrated with a reaction solvent, for example, toluene, or, in a solvent such as a THF solvent, may be distilled off with the solvent when the solvent is distilled off at room temperature under reduced pressure.
- a dehydrating agent for example, anhydrous sodium sulfate, anhydrous magnesium sulfate, anhydrous copper sulfate, or molecular sieves, a water-absorbing polymer (nonionic type), etc. can be coexistent in the reaction system and dehydrated and removed. .
- the copper complex obtained by the reaction can be purified by a column chromatography method using commercially available silica gel for chromatography, a dehydrated silica gel obtained by dehydrating a commercially available silica gel for chromatography, a distillation method, or a combination of these methods.
- the following formula (III) shows an example of the above-mentioned copper complex containing a silyl ether-based / -diketonato ligand.
- the compound represented by the formula (III) ′ as a ligand that is, in the general formula (I), X is a (CH 3 ) 3 SiO —C (CH 3 ) 2 — group, Is a (CH 3 ) 3 C— group, and a copper complex with the enolanion of a ⁇ -diketone having Z as a ligand, bis (2, .6,6-trimethyl-2- (trimethylsilyloxy) 3,5-hepnodionato) copper (II) complex [hereinafter referred to as Cu (s obd) 2 ].
- the copper complex of the present invention can be made into a copper-containing thin film by performing a chemical vapor deposition method using, for example, a known CVD apparatus as shown in FIG.
- the method of vaporizing the copper complex by the CVD method in the present invention includes a method of directly supplying the copper complex itself to the vaporization chamber, or a method of supplying the copper complex of the present invention to a suitable solvent, for example, a solvent such as hexane, toluene, and tetrahydrofuran. It can be used for the method of diluting and supplying the solution to the vaporization chamber to vaporize.
- a suitable solvent for example, a solvent such as hexane, toluene, and tetrahydrofuran. It can be used for the method of diluting and supplying the solution to the vaporization chamber to vaporize.
- a known CVD method can be used for vapor deposition on the substrate.
- a reducing gas for example, hydrogen or the like may coexist with the copper complex of the present invention, or may be used in the presence of hydrogen gas.
- a method of depositing metallic copper by a plasma CVD method can also be used.
- the obtained compounds were identified by IR and elemental analysis.
- the obtained compound was identified by NMR, IR and MS.
- the obtained compound was identified by IR and elemental analysis.
- the generated sodium acetate was filtered off to obtain a yellow solution.
- the desired 2,6-dimethyl-12- (trimethylsilyloxy) -13,5-hepnodione, which is the main product of the reaction was purified by column chromatography using a silica gel, which was concentrated and dehydrated. 91 g (3.71 mmol, yield 71%) were obtained.
- the obtained compound was identified by NMR, IR and MS.
- the obtained compound was identified by IR and elemental analysis.
- the obtained compound was identified by NMR, IR and MS.
- the copper complex obtained in (2-3) above was identified by IR and elemental analysis.
- the equipment shown in Fig. 1 was used for the test.
- the copper complex 8 in the vaporizer (glass amble) 1 is heated and vaporized in the heater 2 and exits the vaporizer with the helium gas introduced after preheating in the heater 6.
- the gas exiting the vaporizer merges with the preheated hydrogen gas introduced from the hydrogen gas line, and is introduced into the reactor 3.
- the center of the glass reactor has a structure that can be heated in the evening.
- the copper complex introduced into the reactor is set at the center of the reactor, heated to a predetermined temperature, and undergoes reductive pyrolysis on the surface of the substrate 7 under the reducing atmosphere, thereby depositing metallic copper on the substrate. .
- the gas leaving the reactor passes through trap 5 and is exhausted to the atmosphere. .
- the copper thin film formation characteristics depend on the vapor deposition conditions such as the vaporization temperature of the copper complex and the substrate temperature.
- the substrate to be deposited a rectangular substrate having a size of 7 mm ⁇ 40 mm was used.
- the copper complex of the present invention is a divalent copper complex, it has better thermal stability than a thermally unstable monovalent copper complex and suppresses thermal decomposition in a vaporizer. Therefore, it is advantageously used in a method for industrially producing a copper-containing thin film by a chemical vapor deposition method. Also, as compared with conventionally known divalent copper complexes, the copper deposition rate is faster and more practical, and it is effective in the production of copper thin films that are in great demand as semiconductor wiring materials.
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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)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/503,064 US6992200B2 (en) | 2002-01-31 | 2003-01-31 | Copper complexes and process for formation of copper-containing thin films by using the same |
KR1020047011917A KR101074310B1 (ko) | 2002-01-31 | 2003-01-31 | 구리 착체 및 이를 이용한 구리 함유 박막의 제조 방법 |
CNB038074206A CN1307185C (zh) | 2002-01-31 | 2003-01-31 | 铜络合物和利用该铜络合物形成含铜薄膜的方法 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002022798 | 2002-01-31 | ||
JP2002-22798 | 2002-01-31 | ||
JP2002261357A JP4120925B2 (ja) | 2002-01-31 | 2002-09-06 | 銅錯体およびこれを用いた銅含有薄膜の製造方法 |
JP2002-261357 | 2002-09-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003064437A1 true WO2003064437A1 (fr) | 2003-08-07 |
Family
ID=27667458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/001014 WO2003064437A1 (fr) | 2002-01-31 | 2003-01-31 | Complexes de cuivre et procede de fabrication de films minces contenant du cuivre au moyen desdits complexes de cuivre |
Country Status (6)
Country | Link |
---|---|
US (1) | US6992200B2 (ja) |
JP (1) | JP4120925B2 (ja) |
KR (1) | KR101074310B1 (ja) |
CN (1) | CN1307185C (ja) |
TW (1) | TWI255816B (ja) |
WO (1) | WO2003064437A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005035823A1 (ja) * | 2003-10-14 | 2005-04-21 | Ube Industries, Ltd. | β−ジケトナト配位子を有する金属錯体および金属含有薄膜の製造方法 |
US8034403B2 (en) * | 2004-09-27 | 2011-10-11 | Ulvac, Inc. | Method for forming copper distributing wires |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100909195B1 (ko) | 2004-09-27 | 2009-07-23 | 가부시키가이샤 알박 | 구리 함유막 형성 방법 |
JP2006111538A (ja) * | 2004-10-12 | 2006-04-27 | Central Glass Co Ltd | イオン性金属錯体の合成法 |
JP2006282611A (ja) * | 2005-04-01 | 2006-10-19 | Ube Ind Ltd | シリルエーテル基を有するβ−ジケトン化合物の製法 |
JP4710698B2 (ja) * | 2006-04-10 | 2011-06-29 | 宇部興産株式会社 | シリルエーテル基を有するβ−ジケトン化合物の製造法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0852229A2 (en) * | 1997-01-07 | 1998-07-08 | Sharp Kabushiki Kaisha | Precursor with (methoxy) (methyl) silylolefin ligands to deposit copper and method for the same |
JP2001077051A (ja) * | 1999-09-07 | 2001-03-23 | Tokyo Electron Ltd | 銅層の形成方法、半導体装置の製造方法、および半導体装置の製造装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100225686B1 (ko) * | 1995-03-20 | 1999-10-15 | 모리시다 요이치치 | 막형성용 재료 및 배선형성방법 |
EP1264817A1 (en) * | 2000-03-14 | 2002-12-11 | Nissan Chemical Industries, Ltd. | $g(b)-DIKETONATOCOPPER(I) COMPLEX CONTAINING ALLENE COMPOUND AS LIGAND AND PROCESS FOR PRODUCING THE SAME |
US6838573B1 (en) * | 2004-01-30 | 2005-01-04 | Air Products And Chemicals, Inc. | Copper CVD precursors with enhanced adhesion properties |
-
2002
- 2002-09-06 JP JP2002261357A patent/JP4120925B2/ja not_active Expired - Fee Related
-
2003
- 2003-01-30 TW TW092102634A patent/TWI255816B/zh not_active IP Right Cessation
- 2003-01-31 US US10/503,064 patent/US6992200B2/en not_active Expired - Fee Related
- 2003-01-31 WO PCT/JP2003/001014 patent/WO2003064437A1/ja active Application Filing
- 2003-01-31 CN CNB038074206A patent/CN1307185C/zh not_active Expired - Fee Related
- 2003-01-31 KR KR1020047011917A patent/KR101074310B1/ko not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0852229A2 (en) * | 1997-01-07 | 1998-07-08 | Sharp Kabushiki Kaisha | Precursor with (methoxy) (methyl) silylolefin ligands to deposit copper and method for the same |
JP2001077051A (ja) * | 1999-09-07 | 2001-03-23 | Tokyo Electron Ltd | 銅層の形成方法、半導体装置の製造方法、および半導体装置の製造装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005035823A1 (ja) * | 2003-10-14 | 2005-04-21 | Ube Industries, Ltd. | β−ジケトナト配位子を有する金属錯体および金属含有薄膜の製造方法 |
JPWO2005035823A1 (ja) * | 2003-10-14 | 2006-12-21 | 宇部興産株式会社 | β−ジケトナト配位子を有する金属錯体および金属含有薄膜の製造方法 |
US8034403B2 (en) * | 2004-09-27 | 2011-10-11 | Ulvac, Inc. | Method for forming copper distributing wires |
Also Published As
Publication number | Publication date |
---|---|
KR20040079978A (ko) | 2004-09-16 |
TWI255816B (en) | 2006-06-01 |
TW200302829A (en) | 2003-08-16 |
CN1307185C (zh) | 2007-03-28 |
JP2003292495A (ja) | 2003-10-15 |
US6992200B2 (en) | 2006-01-31 |
KR101074310B1 (ko) | 2011-10-17 |
CN1642964A (zh) | 2005-07-20 |
JP4120925B2 (ja) | 2008-07-16 |
US20050080282A1 (en) | 2005-04-14 |
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