JP2022013826A - 薄膜蒸着のための5族金属化合物及びそれを用いた5族金属含有薄膜の形成方法 - Google Patents
薄膜蒸着のための5族金属化合物及びそれを用いた5族金属含有薄膜の形成方法 Download PDFInfo
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- JP2022013826A JP2022013826A JP2021106782A JP2021106782A JP2022013826A JP 2022013826 A JP2022013826 A JP 2022013826A JP 2021106782 A JP2021106782 A JP 2021106782A JP 2021106782 A JP2021106782 A JP 2021106782A JP 2022013826 A JP2022013826 A JP 2022013826A
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 40
- 150000002736 metal compounds Chemical class 0.000 title claims abstract description 40
- 239000010409 thin film Substances 0.000 title claims abstract description 36
- 238000007740 vapor deposition Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims description 35
- 239000002184 metal Substances 0.000 title claims description 33
- 239000002243 precursor Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 239000000126 substance Substances 0.000 claims description 24
- 238000000231 atomic layer deposition Methods 0.000 claims description 19
- 125000004432 carbon atom Chemical group C* 0.000 claims description 19
- 125000000217 alkyl group Chemical group 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 13
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- 238000005229 chemical vapour deposition Methods 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 claims description 7
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 7
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- 239000000243 solution Substances 0.000 claims description 7
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 4
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 4
- 125000003538 pentan-3-yl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])[H] 0.000 claims description 4
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- 125000001973 tert-pentyl group Chemical group [H]C([H])([H])C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 4
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- 229910052786 argon Inorganic materials 0.000 claims description 2
- 239000012159 carrier gas Substances 0.000 claims description 2
- 239000001307 helium Substances 0.000 claims description 2
- 229910052734 helium Inorganic materials 0.000 claims description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 2
- 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 claims description 2
- 125000004491 isohexyl group Chemical group C(CCC(C)C)* 0.000 claims description 2
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- 239000003960 organic solvent Substances 0.000 claims description 2
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- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 3
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 239000010955 niobium Substances 0.000 description 28
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 description 14
- 150000001875 compounds Chemical class 0.000 description 11
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 description 9
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- 238000005516 engineering process Methods 0.000 description 2
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- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
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- 125000002524 organometallic group Chemical group 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- UJMHAKAFMBDTMU-UHFFFAOYSA-N [Nb].C1=CC=CC1 Chemical compound [Nb].C1=CC=CC1 UJMHAKAFMBDTMU-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
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- QKIUAMUSENSFQQ-UHFFFAOYSA-N dimethylazanide Chemical compound C[N-]C QKIUAMUSENSFQQ-UHFFFAOYSA-N 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F17/00—Metallocenes
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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
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
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- 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
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- C23C16/405—Oxides of refractory metals or yttrium
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- C—CHEMISTRY; METALLURGY
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- 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
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- C—CHEMISTRY; METALLURGY
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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
- 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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- H—ELECTRICITY
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- H01L21/0228—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 deposition by cyclic CVD, e.g. ALD, ALE, pulsed CVD
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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
- C23C16/44—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]
- C23C16/45527—Atomic layer deposition [ALD] characterized by the ALD cycle, e.g. different flows or temperatures during half-reactions, unusual pulsing sequence, use of precursor mixtures or auxiliary reactants or activations
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Abstract
Description
Claims (12)
- 前記R1は、n-プロピル基(nPr)、iso-プロピル基(iPr)、n-ブチル基(nBu)、tert-ブチル基(tBu)、iso-ブチル基(iBu)、sec-ブチル基(sBu)、n-ペンチル基、tert-ペンチル基、iso-ペンチル基、sec-ペンチル基、ネオペンチル基、3-ペンチル基、ヘキシル基、及びイソヘキシル基の中から選択されたいずれか一つである、請求項1に記載の5族金属化合物。
- 前記R2及び前記R3は、それぞれ独立して、水素、メチル基、エチル基、n-プロピル基、iso-プロピル基、n-ブチル基、sec-ブチル基、iso-ブチル基、及びtert-ブチル基の中から選択されたいずれか一つである、請求項1に記載の5族金属化合物。
- 請求項1から5のいずれか一項に記載の5族金属化合物を含む、5族金属含有薄膜蒸着用前駆体組成物。
- 請求項1から5のいずれか一項に記載の5族金属化合物を前駆体として利用して、金属有機物化学気相蒸着(Metal Organic Chemical Vapor Deposition、MOCVD)工程または原子層蒸着(Atomic layer Deposition、ALD)工程を通して基板上に薄膜を蒸着する、5族金属含有薄膜の形成方法。
- 前記蒸着工程は、50~700℃の温度範囲で遂行される、請求項7に記載の5族金属含有薄膜の形成方法。
- 前記蒸着工程は、バブリング方式、気体相(vapor phase)質量流量制御器(Mass Flow Controller、MFC)方式、直接気体注入(Direct Gas Injection、DGI)方式、直接液体注入(Direct Liquid injection、DLI)方式、及び前記5族金属化合物を有機溶媒に溶解させて移動させる有機溶液供給方式の中から選択された一つの方式を通して前記5族金属化合物を前記基板へ移動させるステップを含む、請求項7に記載の5族金属含有薄膜の形成方法。
- 前記5族金属化合物は、運搬ガスと共に前記バブリング方式または前記直接気体注入方式により前記基板上へ移動し、
前記運搬ガスは、アルゴン(Ar)、窒素(N2)、ヘリウム(He)、及び水素(H2)の中から選択された一つ以上を含む混合物である、請求項9に記載の5族金属含有薄膜の形成方法。 - 前記蒸着工程は、前記5族金属含有薄膜の形成時、水蒸気(H2O)、酸素(O2)、オゾン(O3)、及び過酸化水素(H2O2)の中から選択された一つ以上の反応ガスを供給するステップを含む、請求項7に記載の5族金属含有薄膜の形成方法。
- 前記蒸着工程は、前記5族金属含有薄膜の形成時、アンモニア(NH3)、ヒドラジン(N2H4)、亜酸化窒素(N2O)、及び窒素(N2)の中から選択された一つ以上の反応ガスを供給するステップを含む、請求項7に記載の5族金属含有薄膜の形成方法。
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