WO2007043709A1 - 半導体装置の製造方法およびその製造装置 - Google Patents
半導体装置の製造方法およびその製造装置 Download PDFInfo
- Publication number
- WO2007043709A1 WO2007043709A1 PCT/JP2006/320887 JP2006320887W WO2007043709A1 WO 2007043709 A1 WO2007043709 A1 WO 2007043709A1 JP 2006320887 W JP2006320887 W JP 2006320887W WO 2007043709 A1 WO2007043709 A1 WO 2007043709A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- source gas
- valve
- semiconductor device
- manufacturing
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 278
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 62
- 239000004065 semiconductor Substances 0.000 title claims abstract description 53
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 133
- 239000002994 raw material Substances 0.000 claims abstract description 133
- 230000003647 oxidation Effects 0.000 claims abstract description 132
- 239000000758 substrate Substances 0.000 claims abstract description 117
- 229910052751 metal Inorganic materials 0.000 claims abstract description 87
- 239000002184 metal Substances 0.000 claims abstract description 77
- 239000007789 gas Substances 0.000 claims description 714
- 230000008021 deposition Effects 0.000 claims description 90
- 230000015572 biosynthetic process Effects 0.000 claims description 49
- 229910052710 silicon Inorganic materials 0.000 claims description 43
- 230000036961 partial effect Effects 0.000 claims description 26
- 229910052735 hafnium Inorganic materials 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 239000000470 constituent Substances 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- 229910044991 metal oxide Inorganic materials 0.000 claims description 4
- 150000004706 metal oxides Chemical class 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 2
- 238000005137 deposition process Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 229910052746 lanthanum Inorganic materials 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 239000010408 film Substances 0.000 description 175
- 238000000151 deposition Methods 0.000 description 98
- 238000001179 sorption measurement Methods 0.000 description 38
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 27
- 239000010703 silicon Substances 0.000 description 27
- 238000010586 diagram Methods 0.000 description 23
- 239000010410 layer Substances 0.000 description 20
- 230000001590 oxidative effect Effects 0.000 description 20
- 230000005587 bubbling Effects 0.000 description 17
- 238000011534 incubation Methods 0.000 description 16
- 125000004429 atom Chemical group 0.000 description 14
- 239000011261 inert gas Substances 0.000 description 14
- 230000007246 mechanism Effects 0.000 description 14
- 239000000463 material Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- 239000012159 carrier gas Substances 0.000 description 8
- 239000002052 molecular layer Substances 0.000 description 8
- 238000005229 chemical vapour deposition Methods 0.000 description 7
- 239000007800 oxidant agent Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 238000010926 purge Methods 0.000 description 5
- 238000010306 acid treatment Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910003902 SiCl 4 Inorganic materials 0.000 description 2
- 229910007926 ZrCl Inorganic materials 0.000 description 2
- 230000010062 adhesion mechanism Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000003252 repetitive effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- SUBDBMMJDZJVOS-UHFFFAOYSA-N 5-methoxy-2-{[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl}-1H-benzimidazole Chemical group N=1C2=CC(OC)=CC=C2NC=1S(=O)CC1=NC=C(C)C(OC)=C1C SUBDBMMJDZJVOS-UHFFFAOYSA-N 0.000 description 1
- IUBCUJZHRZSKDG-UHFFFAOYSA-N C(C)N(C)[Hf] Chemical compound C(C)N(C)[Hf] IUBCUJZHRZSKDG-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- ZYLGGWPMIDHSEZ-UHFFFAOYSA-N dimethylazanide;hafnium(4+) Chemical compound [Hf+4].C[N-]C.C[N-]C.C[N-]C.C[N-]C ZYLGGWPMIDHSEZ-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- MJBZMPMVOIEPQI-UHFFFAOYSA-N n-methyl-n-tris[ethyl(methyl)amino]silylethanamine Chemical compound CCN(C)[Si](N(C)CC)(N(C)CC)N(C)CC MJBZMPMVOIEPQI-UHFFFAOYSA-N 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 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 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Classifications
-
- 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
- H01L21/02123—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 silicon
- H01L21/02142—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 silicon the material containing silicon and at least one metal element, e.g. metal silicate based insulators or metal silicon oxynitrides
-
- 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
- C23C16/401—Oxides containing silicon
-
- 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
- C23C16/45531—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 specially adapted for making ternary or higher compositions
-
- 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
- H01L21/02123—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 silicon
- H01L21/02142—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 silicon the material containing silicon and at least one metal element, e.g. metal silicate based insulators or metal silicon oxynitrides
- H01L21/02145—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 silicon the material containing silicon and at least one metal element, e.g. metal silicate based insulators or metal silicon oxynitrides the material containing aluminium, e.g. AlSiOx
-
- 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
- H01L21/02123—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 silicon
- H01L21/02142—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 silicon the material containing silicon and at least one metal element, e.g. metal silicate based insulators or metal silicon oxynitrides
- H01L21/02148—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 silicon the material containing silicon and at least one metal element, e.g. metal silicate based insulators or metal silicon oxynitrides the material containing hafnium, e.g. HfSiOx or HfSiON
-
- 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
- H01L21/02123—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 silicon
- H01L21/02142—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 silicon the material containing silicon and at least one metal element, e.g. metal silicate based insulators or metal silicon oxynitrides
- H01L21/0215—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 silicon the material containing silicon and at least one metal element, e.g. metal silicate based insulators or metal silicon oxynitrides the material containing tantalum, e.g. TaSiOx
-
- 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
- H01L21/02123—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 silicon
- H01L21/02142—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 silicon the material containing silicon and at least one metal element, e.g. metal silicate based insulators or metal silicon oxynitrides
- H01L21/02153—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 silicon the material containing silicon and at least one metal element, e.g. metal silicate based insulators or metal silicon oxynitrides the material containing titanium, e.g. TiSiOx
-
- 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
- H01L21/02123—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 silicon
- H01L21/02142—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 silicon the material containing silicon and at least one metal element, e.g. metal silicate based insulators or metal silicon oxynitrides
- H01L21/02156—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 silicon the material containing silicon and at least one metal element, e.g. metal silicate based insulators or metal silicon oxynitrides the material containing at least one rare earth element, e.g. silicate of lanthanides, scandium or yttrium
-
- 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
- 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
-
- 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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/28008—Making conductor-insulator-semiconductor electrodes
- H01L21/28017—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon
- H01L21/28158—Making the insulator
- H01L21/28167—Making the insulator on single crystalline silicon, e.g. using a liquid, i.e. chemical oxidation
- H01L21/28194—Making the insulator on single crystalline silicon, e.g. using a liquid, i.e. chemical oxidation by deposition, e.g. evaporation, ALD, CVD, sputtering, laser deposition
-
- 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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/314—Inorganic layers
- H01L21/3141—Deposition using atomic layer deposition techniques [ALD]
-
- 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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/314—Inorganic layers
- H01L21/316—Inorganic layers composed of oxides or glassy oxides or oxide based glass
- H01L21/31604—Deposition from a gas or vapour
- H01L21/31645—Deposition of Hafnium oxides, e.g. HfO2
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/49—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
- H01L29/51—Insulating materials associated therewith
- H01L29/517—Insulating materials associated therewith the insulating material comprising a metallic compound, e.g. metal oxide, metal silicate
-
- 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
-
- 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
- H01L21/02189—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
Definitions
- the present invention relates to a semiconductor device manufacturing method and a manufacturing apparatus, and more particularly to a semiconductor device manufacturing method and a manufacturing apparatus suitable for manufacturing a gate insulating film of M0SFET ′ (Metal Oxide Semiconductor Field Effect Transistor). Background art
- CMOS complementary M0S
- CMOS complementary M0S
- high-k material high dielectric constant material
- Typical examples of high-k materials include oxides containing Hf, Zr, Al, Ta, and the like.
- the high-k material at the interface of Si0 2 or SiON and gate electrode is a gate insulating film, inserted hig h - the deposition density of k material by adjusting the threshold voltage of the transistor, the channel region It has been studied to improve carrier mobility, on-current, and GI DL (Gate Induced Drain Barrier Lowering) by reducing the impurity concentration of GaAs.
- the adhesion density of the metal element constituting the high-k material necessary for setting the threshold voltage of the transistor to an appropriate value is preferably 1 EUatoms m 2 or less.
- Examples of the high-k material film forming method described above include film forming methods such as sputtering, CVD (Chemical Vapor Deposition), and atomic layer adsorption deposition.
- the sputtering method is concerned with the influence of plasma damage to the gate insulating film during film formation.
- the C VD method eliminates the effects of plasma damage, which is a concern in the sputtering method, and is suitable for forming the above-mentioned mixed film of high-k material and silicon. Since there is an incubation time that is not proportional to the film thickness of the thin film to be deposited, film thickness controllability, in-plane uniformity, and reproducibility are problems.
- the atomic layer adsorption deposition method can achieve better uniform “reproduction” reproducibility than the CVD method by the film formation mechanism using the saturated adsorption of the raw material.
- the atomic layer adsorption deposition method can be formed in molecular layer units in principle, so it is considered to be most suitable for the control technique of the adhesion density of the above metal elements.
- Non-Patent Document 1 Journal Of Applied Physics, 'Vol. 92,' No. 12, 15 December 2002, pp 7168-7174 describes the deposition of Hf0 2 by atomic layer adsorption deposition. It is shown that the deposition density of Hf element per cyclore is 1.26E14 atoms / cni 2 and the deposition rate at that time is 0.5 A per cycle. In addition, the deposition density of Hf elements varies greatly depending on the surface state of the substrate to be processed. For example, the chemical oxide film and the thermal oxide film on the surface of the silicon substrate have a higher Hf deposition per cycle on the thermal oxide film. It has been shown that the amount is halved compared to that on the chemical oxide film.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2004-79753 uses tetrakis (jetylamino) hafnium (Hf [N (C 2 H 5 ) 2 ] 4 ) as a raw material and 0 3 as an oxidizing agent on a silicon substrate. by alternately supplying, that have been disclosed that perform atomic layer adsorption deposition HF0 2. In this case, a film forming rate of 0.8 A per cycle is realized. In-plane uniformity of film thickness is about 7%. The in-plane uniformity is calculated as (maximum value of measurement-minimum value of measurement) I (average value of measurement X 2) X 100 (%).
- Non-Patent Document 2 Journal Of Vacuum Science Technology, A23 (3), MAY / J UN 2005, L1-L3
- the atomic layer adsorption deposition of HfxSi (lx) 0 2 is used as the Hf source.
- S ethylmethylamino
- hafnium Hf [N (C 2 H 5 ) (CH 3 )] 4
- tetrakis ethylmethylamino) silicon
- Si [N (C 2 H 5 ) (CH 3)] 4 tetrakis (ethylmethylamino) silicon
- Hf source gas and Si source gas as an oxidizing 'processing gas formed of one sub Ikuru per 0. 8A It has been reported that film rates have been achieved.
- Patent Document 2 Japanese Patent Laid-Open No. 2003-347297 ⁇ describes the atomic layer adsorption deposition of HfxSi (1- ⁇ ) 0 2 as the Hf raw material tetrakis (dimethylamino) hafnium and the Si raw material tetramethoxysilane (Si ( It is disclosed that 0 CH 3 ) 4 ) and an oxidizing agent are used, and Hf raw material, oxidizing agent, Si raw material, and oxidizing agent are sequentially supplied onto the substrate as one cycle. In this case, the deposition rate is 2A per cycle.
- Patent Document 3 Japanese Patent Laid-Open No. 2002-151489 uses ZrCl 4 and SiCl 4 as source gases, and H 2 0 as an acid treatment gas, respectively.
- ZrCl 4 supply process, purge process, H 20 Supply process, Purge process, SiCl 4 supply process, Purge process, H 2 0 supply process are sequentially performed as one cycle, Zr0 2 molecular layer and Si0 2 molecular layer are alternately deposited to form ZrSi0 4 film
- An atomic layer adsorption deposition method is disclosed.
- the deposition rate per cycle of Hf0 2 is from 05 A to 08 A, and in this case, the deposition density of Hf per cycle is from 1 26E14 atoms / cm 2 to 1. 8E14 atoms / cm 2 . Therefore, a desirable adhesion density of 1E14 atom S / cm 2 or less per cycle as described above cannot be obtained.
- the amount of adhesion per cycle fluctuates due to the existence of an incubation time depending on the condition of the surface of the substrate to be processed. There is a problem that it is difficult to ensure uniformity and reproducibility.
- the film thickness is due to the presence of incubation time.
- film thickness controllability, in-plane uniformity, and reproducibility deteriorate.
- the object of the present invention is to reduce the incubation time, thereby suppressing film thickness fluctuations, improving in-plane uniformity and reproducibility, and improving controllability of the adhesion density of metal elements. It is about to try. Disclosure of the invention
- a method for manufacturing a semiconductor device including a method for forming a metal oxide film containing metal elements M and Si as constituent elements is provided.
- the manufacturing method includes the first step of supplying the oxidation processing gas, the second step of supplying the first source gas, and the second source gas on the substrate to be processed.
- the third step of supplying gas is sequentially performed.
- the second source gas or It is also possible to supply a mixed gas of the second source gas and the first source gas.
- a fourth step of supplying the oxidation treatment gas onto the substrate to be processed is performed, and further, from the second step to the fourth step.
- One or more cycles may be performed.
- a fourth step of supplying the oxidation treatment gas onto the substrate to be processed is carried out following the third step, and further from the third step to the fourth step.
- One or more cycles may be performed.
- a fourth step of supplying the oxidation treatment gas onto the substrate to be processed is performed, and further, a fifth step of supplying the first source gas is performed.
- One or a plurality of cycles may be performed as the four steps of the eighth step.
- the third raw material gas and the oxidation treatment gas, or the mixed gas of the first raw material gas and the second raw material gas, and the The oxidation treatment gas may be supplied at the same time, and the first to third steps may be performed one or more cycles.
- a semiconductor device manufacturing apparatus includes a film forming chamber, a substrate holding table provided in the film forming chamber so as to hold a substrate to be processed, and a heating device capable of adjusting the temperature of the substrate holding table.
- An oxidation treatment gas supply source for introducing an oxidation treatment gas into the film formation treatment chamber; a first valve capable of controlling the supply of the oxidation treatment gas; and a first mass flow controller capable of adjusting a flow rate.
- An oxidation treatment gas supply unit a first gas supply source for introducing a first source gas containing Si; a second valve capable of controlling the supply of the first source gas; and a first valve capable of adjusting a flow rate.
- a first source gas supply unit having a second mass flow controller; a second gas supply source for introducing a second source gas containing a metal element M; and a second source gas that can control the supply of the second source gas.
- 3 valves and 3rd mass flow with adjustable flow rate A second source gas supply unit having a low controller; and a conductance valve capable of adjusting the pressure in the film forming chamber.
- the manufacturing apparatus includes a first step of supplying the oxidizing gas onto the substrate to be processed, a second step of supplying the first source gas onto the substrate to be processed, and the substrate on the substrate to be processed.
- the first to third and third valves, the first to third mass flow controllers, and the conductance valve are controlled so as to sequentially perform the third step of supplying the gas containing the second source gas.
- a control device is provided. Brief Description of Drawings
- FIG. 1 is a sequence diagram showing a supply process of a source gas and an oxidation treatment gas according to the first embodiment of the present invention.
- FIG. 2 is a block diagram showing an outline of a first example of a film forming apparatus used in the present invention.
- FIG. 3 is a block diagram showing an outline of a second example of the film forming apparatus used in the present invention.
- FIG. 4 is a flowchart showing a control process when the first embodiment of the present invention is applied to the film forming apparatus shown in FIG.
- FIG. 5 is a flowchart showing a control process when the first embodiment of the present invention is applied to the film forming apparatus shown in FIG. -FIG. 6A to FIG. 6D are diagrams for explaining the concept of the film formation mechanism in the film formation method of the present invention.
- FIG. 7 is a sequence diagram showing the supply process of the source gas and the oxidation treatment gas according to the second embodiment of the present invention.
- FIG. 8 is a flowchart showing a control process when the second embodiment of the present invention is applied to the film forming apparatus shown in FIG.
- FIG. 9 is a flowchart showing a control process when the second embodiment of the present invention is applied to the film forming apparatus shown in FIG.
- FIG. 10 shows the supply of source gas and oxidation treatment gas according to the third embodiment of the present invention. It is a sequence diagram which shows a process.
- FIG. 11 is a flowchart showing a control process when the third embodiment of the present invention is applied to the film forming apparatus shown in FIG.
- FIG. 12 is a flowchart showing a control process when the third embodiment of the present invention is applied to the development device shown in FIG. ''
- FIG. 13 is a sequence diagram showing a supply process of a source gas and an oxidation treatment gas according to the fourth embodiment of the present invention.
- FIG. 14 is a flowchart showing a control process when the fourth embodiment of the present invention is applied to the film forming apparatus shown in FIG.
- FIG. 15 is a flowchart showing a control process when the fourth embodiment of the present invention is applied to the component apparatus shown in FIG. '-FIG. 16 is a sequence diagram showing a supply process of a source gas and an oxidation treatment gas according to the fifth embodiment of the present invention.
- FIG. 17 is a flowchart showing a control process when the fifth embodiment of the present invention is applied to the film forming apparatus shown in FIG.
- FIG. 18 is a sequence diagram showing the supply process of the source gas and the oxidation treatment gas according to Example 1 of the present invention.
- FIG. 19 is a flowchart showing a control process of the film forming apparatus in Example 1 of the present invention.
- FIG. 20 is a graph showing the dependency of Hf deposition density on Si raw material supply time in Example 1 of the present invention.
- FIG. 21 is a graph showing the Si source supply time dependence of the Hf deposition density on the natural oxide film and the thermal oxide film according to the first embodiment in Example 1 of the present invention.
- FIG. 22 is a graph showing the cycle number dependence of the Hf deposition density on the natural oxide film and the thermal oxide film in Example 1 of the present invention.
- FIG. 23 is a graph showing the dependence of in-plane uniformity of Hf deposition density on the Si raw material supply time in Example 1 of the present invention.
- Figure 24 shows the dependence of the Hf deposition density on the Si raw material supply time in Example 1 of the present invention. It is a graph which shows.
- FIG. 25 is a graph showing the Hf raw material supply time dependence of the Hf adhesion density in Example 1 of the present invention.
- FIG. 26 is a graph showing the dependency of Hf deposition density on Si raw material supply partial pressure in Example 1 of the present invention. ',
- FIG. 27 is a graph showing the dependency of the Hf deposition density on the Si source supply time when the Si source supply partial pressure is 5E- 4 Torr and 0.3 Torr in Example 1 of the present invention.
- FIG. 28 is a graph showing the cycle number dependence of the adhesion density in Example 1 of the present invention.
- FIG. 29 is a graph showing the substrate temperature dependence of the Hf adhesion density in Example 1 of the present invention. '
- FIG. 30 is a graph showing the dependence of the Hf deposition density on the Si raw material supply amount in Example 2 of the present invention.
- FIG. 31 is a sequence diagram showing the supply process of the source gas and the oxidation treatment gas according to Example 3 of the present invention.
- FIG. 32 is a flowchart showing a control process of the film forming apparatus in Embodiment 3 of the present invention.
- FIG. 33 is a sequence diagram showing the supply process of the source gas and the oxidation treatment gas according to Example 4 of the present invention.
- FIG. 34 is a flowchart showing a control process of the film forming apparatus in Embodiment 4 of the present invention.
- FIG. 35 is a sequence diagram showing the supply process of the source gas and the oxidation treatment gas according to Example 5 of the present invention.
- FIG. 36 is a flowchart showing the control process of the growth apparatus according to the fifth embodiment of the present invention.
- FIG. 37 is a flowchart showing a control process of the film forming apparatus in Embodiment 6 of the present invention.
- FIG. 38 is a flowchart showing the control process of the film forming apparatus in Example 7 of the present invention. is there.
- FIG. 39 is a flowchart showing a control process of the film forming apparatus in Example 8 of the present invention. ,, Best mode for carrying out the invention.
- FIG. 2 shows a schematic configuration of a first example of a film forming apparatus used in the present invention when adopting a gas supply method in which a source gas and an oxidation processing gas are supplied onto a substrate to be processed from above.
- the film formation chamber 113 can be heated to a predetermined temperature by a heater 121.
- the inner wall of the film forming chamber 113 is preferably set to a temperature not lower than the temperature at which the source gas has a sufficient vapor pressure and not higher than the decomposition temperature of the source gas.
- the first source gas is adjusted to a predetermined flow rate from a source gas source 101 by a mass flow controller (MFC) 103 (second mass port one controller), and is formed via a valve 105 (second valve). It is introduced into the membrane chamber 113.
- MFC mass flow controller
- the bubbling gas is adjusted to a predetermined flow rate from the bubbling gas source 107 by the mass flow controller 108 (third mass flow controller), and the bubbling gas causes the raw material gas from the raw material gas source 109 to be the second raw material gas.
- the film 110 is introduced into the film forming chamber 113 through the valve 110 (third valve).
- the oxidation treatment gas is adjusted to a predetermined flow rate by the mass flow controller 116 (first mass flow controller) from the oxidation treatment gas source 115 and is introduced into the film formation chamber 113 through the valve 1 17 (first valve). .
- the first source gas and the second source gas are supplied from above to the substrate to be processed 122 through the gas mixer 111 and the shower head 112, and are exhausted from the conductance valve 118.
- the growth pressure is controlled by the opening of the conductance valve 118.
- the gas mixer 111 and the shower head 112 can be heated to a predetermined temperature by a heater 114.
- the inner walls of the gas mixer 111 and the shower head 112 are preferably set to a temperature not lower than the temperature at which the source gas has a sufficient vapor pressure and not higher than the decomposition temperature of the source gas.
- the substrate to be processed 122 is heated to a predetermined temperature by a heater 125 via a susceptor 123 (substrate holding table).
- the gas supplied onto the substrate to be processed 122 is exhausted by the exhaust pump 120 through the conductance valve 118 and the trap 119.
- the heater chamber 124 is exhausted by the exhaust pump 126.
- the flow rate of the replacement gas from the replacement gas source 102 is adjusted by the mass flow controller 104, and the deposition chamber 11 is connected via the valve 106. You can also introduce it in 3.
- the introduced replacement gas is exhausted from the conductance valve 118. Further, the replacement gas may be introduced into the film forming chamber 113 together with the source gas and the oxidation treatment gas as a carrier gas.
- the first source gas is supplied by the flow rate adjustment by the mass flow controller 103
- the second source gas is a force supplied by the bubbling gas whose flow rate is adjusted by the mass flow controller 108.
- a vaporizer may be installed between the mass flow controllers 103 and 108 and the valves 105 and 110, respectively.
- the opening / closing control of the valves 105, 106, 110, and 117 is performed by the control device 137 via the control input / output ports 127, 128, 129, and 130, respectively.
- the flow rate adjustment by the mass flow controllers 103, 104, 108, 116 is controlled by the control device 137 via the control input / output ports 131, 132, 133, 134, respectively.
- the opening degree of the conductance valve 118 is adjusted by the control device 137 via the control input / output port 135.
- the temperature of the heater 125 is adjusted by the control device 137 via the input / output port 136.
- FIG. 3 shows a schematic configuration of a second example of a film forming apparatus used in the present invention when adopting a gas supply method in which a source gas and an oxidation process gas are supplied along the surface of a substrate to be processed.
- the first raw material debris, the second raw material gas, and the replacement gas are introduced into the film forming chamber without passing through the gas mixer and the shower head, and along the surface of the substrate to be processed. It differs from the film deposition system shown in Fig. 2 in that it is evacuated.
- the flow rate of the first source gas from the source gas source 204 is adjusted by the mass flow controller 205 (second mass flow controller), and is formed via the valve 206 (second valve). Introduced into membrane chamber 226. Also, from source gas source 207 The flow rate of the second source gas is adjusted by the mass flow controller 208 (third mass flow controller) and introduced into the film formation chamber 226 via the valve 209 (third valve). The oxidation gas is supplied from the oxidation gas source 216 by the mass flow controller 217 (first mass flow controller) to the film formation chamber 226 through the valve 218 (first valve). Is done.
- the conductance valve 222 is reduced in opening and the conductance valve Increase the opening of 219.
- the processing gas is supplied along the surface of the substrate 227 to be processed and exhausted from the conductance valve 219 side through the trap 220 and the exhaust pump 221'.
- the oxidizing gas is introduced into the film formation chamber 226, the opening degree of the conductance valve 219 is reduced and the opening degree of the conductance valve 222 is increased.
- the oxidizing gas is supplied along the surface of the substrate 227 to be processed, and is exhausted from the conductance valve 222 side via the trap 223 and the exhaust pump 224.
- the flow rate is adjusted by the mass port controllers 202, 211, 214 from the replacement gas sources 201, 210, 213, respectively.
- the film may be introduced into the film formation chamber 226 through valves 203, 212, and 215.
- the introduced replacement gas is exhausted from the conductance valves 222 and 219. At this time, the opening degree of each of the conductance valves 222 and 219 is increased.
- the replacement gas may be introduced into the film formation chamber 226 together with the source gas and the oxidation treatment gas as a carrier gas for the source gas oxidation treatment gas.
- the substrate 227 to be processed is heated to a predetermined temperature by the heater 229 via the susceptor 228 (substrate holding table).
- the heater chamber 213 is exhausted by the exhaust pump 230.
- the supply method of the raw material gas is not limited to this, it may be supplied by the bubbling described in Fig. 2, or a vaporizer is installed between the mass flow controllers 205 and 208 and the valves 206 and 209, respectively. May be.
- the opening / closing control of the valves 203, 206, 209, 212, 215, 218 is performed by the control device 247 via the control input / output ports 232, 233, 234, 235, 236, 237, respectively.
- Mass flow controller 202, 205 The flow rate adjustment by 208, 211, 214, and 217 is controlled by the controller 247 via the control input / output port 2: 38, 239, 240, 241, 242, and 243, respectively.
- the opening adjustments of the conductance valves 219 and 222 are performed by the control device 247 via the control input / output ports 244 and 245, respectively.
- the temperature of the heater 229 is adjusted by the controller 247 via the input / output port 246. '
- the saturation adsorption mechanism for the raw material gas or the like on the substrate to be processed works, so that either of the film forming apparatuses shown in FIGS. 2 and 3 is used. Even when used, good adhesion density uniformity can be obtained.
- the film formation method is based on the CV D method. Therefore, from the viewpoint of in-plane uniformity, a gas mixer and shower head mechanism are installed. It is preferable to use the film forming apparatus shown in FIG.
- FIG. 1 is a sequence diagram showing a gas supply process of the film forming method according to the first embodiment of the present invention.
- the first step of supplying an oxidation treatment gas onto the substrate to be processed the second step of supplying the Si source gas that is the first source gas, and the metal that is the second source gas
- the third step of supplying the source gas is sequentially performed.
- a mixed gas of the first source gas and the second source gas may be supplied.
- a semiconductor device manufacturing method includes a first source gas containing Si, a second source gas containing a metal element M, and an oxidation treatment gas on a substrate to be processed containing at least Si as a constituent element.
- the method is characterized in that a metal oxide composed of metal elements M and Si is deposited on the substrate to be processed.
- the film forming method according to the present invention is particularly based on the following principle newly found by the present inventor.
- the second raw material is not involved in the oxidation treatment gas supply process.
- Supply of the first source gas in the second step when the gas or the mixed gas of the second source gas and the first source gas is being implemented Adjust the amount and supply partial pressure of the first source gas.
- the adhesion density of the metal element M supplied after the second step on the substrate to be treated can be controlled, the influence of the surface state of the substrate to be treated is suppressed, and fluctuations in the adhesion density of the metal element due to the incubation time are suppressed. Is done.
- valve 117 is opened, and the flow rate of oxidizing gas is adjusted by means of mass port controller 116, and the opening degree of conductance valve 118 is adjusted.
- the valve 105 is opened, the flow rate of the Si source gas is adjusted by the mass flow controller 103, the opening of the conductance valve 118 is adjusted, and then the valve 105 is closed.
- the valve 110 is opened, the flow rate of the bubbling gas is adjusted by the mass flow controller 108, the opening of the conductance valve 118 is adjusted, and then the valve 110 is closed.
- Step S13 the opening operation of the valve 105 and the valve 110, the flow rate adjustment by the mass flow controller 103 and the mass flow controller 108, the opening adjustment of the conductance valve 118, and the closing operation of the valve 105 and the valve 110 are executed in order.
- a replacement gas in each gas supply process of steps S11 to S13, may be supplied simultaneously with the supply of the oxidation treatment gas and the raw material gas.
- an opening operation of the valve 106 and a control operation for adjusting the flow rate of the replacement gas by the mass flow controller 104 may be added.
- a process for replacing the oxidation treatment gas and the source gas may be set between each gas supply process in FIG. In that case, after closing the valve 117 or the valve 105, the valve 106 is opened, the flow rate of the replacement gas from the replacement gas source 102 is adjusted by the mass flow controller 104, the conductance valve 118 is adjusted, and the replacement gas is adjusted.
- the deposition chamber 113 Good In that case, in each gas supply step, an opening operation of the valve 106 and a control operation for adjusting the flow rate of the replacement gas by the mass flow controller 104 may be added.
- a process for replacing the oxidation treatment gas and the source gas may be set between each gas supply process in FIG. In that case, after closing the valve 117 or the valve 105, the valve 106 is opened, the flow rate of the replacement gas from the replacement gas source 102 is adjusted by the mass flow controller 104, the
- valve 218 is opened, the flow rate of oxidizing gas is adjusted by mass flow controller 217, and the opening degree of conductance valves 222 and 219 is adjusted, and then Close valve 218.
- the valve 206 is opened, the flow rate of the Si source gas is adjusted by the mass flow controller 205, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 206 is closed. .
- valve 209 is opened, the flow rate of the metal source gas is adjusted by the mass flow controller 208, the opening of the conductance valves 222 and 21-9 is adjusted, and then the valve 209 is close.
- a mixed gas of the metal source gas and the Si source gas may be supplied.
- the opening operation of the valves 209 and 206, the flow rate adjustment by the mass flow controllers 208 and 205, the opening adjustment of the conductance valves 222 and 219, and the closing operation of the valves 209 and 206 are executed.
- a replacement gas in each gas supply process of steps S21 to S23, a replacement gas (inert gas) may be supplied simultaneously with the supply of the oxidation treatment gas and the raw material gas.
- the opening operation of the valve 215 and the replacement gas flow rate adjustment by the mass flow controller 214 and the closing operation of the valve 215, or the opening operation of the valve 203 and the replacement gas flow rate adjustment by the mass flow controller 202 are performed.
- the valve 203 closing operation, or the valve 212 opening operation, the replacement gas flow rate adjustment by the mass flow controller 211 and the valve 212 closing operation may be added. Further, after each gas supply process of steps S21 to S23 in FIG. 5, a process of replacing the oxidation treatment gas and the source gas may be set.
- the opening operation of the valve 215 and the replacement gas flow rate adjustment by the mass flow controller 214 and the closing operation of the valve 215, or the opening operation of the valve 203 and the replacement gas by the mass flow controller 202 are performed.
- Flow adjustment and valve 203 closing operation, or The valve 212 is opened and the flow rate of the replacement gas is adjusted by the mass flow controller 211 and the valve 212 is closed.
- the opening of the conductance valves 222 and 219 is adjusted, and the replacement gas source 213, 201, or The replacement gas from 210 may be introduced into the deposition chamber 226.
- 6A to 6D exemplify the adhesion mechanism when the metal element M is Hf.
- the oxidation gas supply process, the Si raw material supply process, the Hf raw material This shows the state of the Hf deposition process when the Si gas mixture gas supply process is performed.
- an oxygen adsorption site is formed on the surface of the substrate 100 to be treated by supplying the oxidation treatment gas.
- Si source gas is supplied.
- the Si deposition density can be controlled by adjusting the supply amount of Si source gas and the supply partial pressure.
- the adhesion density according to the supply conditions of the Si source gas can be determined in a self-limiting manner. In other words, a growth stop mechanism that prevents Si from attaching even if an excessive amount of Si material is supplied works. In this way, the adhesion state of Si can be controlled by the supply conditions of the Si source gas, so that the corresponding adsorption sites remain.
- the Si raw material supply process of FIG. 6B by supplying only the first raw material gas, the adsorbing site such as dangling bonds existing on the substrate to be processed 100 before supplying the oxidizing gas is supplied. Also Si adheres. For this reason, the Hf adhesion state is affected by dangling bonds and the like that existed in advance on the substrate 100 to be processed. Therefore, fluctuations in the Hf adhesion density due to the surface state of the substrate to be processed 100 are suppressed. Furthermore, the incubation time in the atomic layer adsorption deposition method and CVD method can be suppressed, and the linearity of Hf adhesion density with respect to the number of cycles and film formation time can be improved.
- FIG. 7 is a sequence diagram showing a gas supply process of the film forming method according to the second embodiment of the present invention.
- the first step of supplying the oxidation treatment gas onto the substrate to be processed, the second step of supplying the Si source gas that is the first source gas, and the metal that is the second source gas The third step of supplying the source gas and the fourth step of supplying the oxidation treatment gas are performed sequentially as the first cycle. Thereafter, a repetitive cycle consisting of a fifth step of supplying Si source gas, a sixth step of supplying metal source gas, and a seventh step of supplying oxidation treatment gas is executed a predetermined number of times.
- a mixed gas of the first source gas and the second source gas may be supplied.
- a process for replacing the oxidation gas or source gas with a replacement gas may be set.
- the replacement gas may be introduced into the film formation chamber together with the source gas and the oxidation treatment gas as a carrier gas.
- step S31 in the oxidation treatment gas supply process of step S31, after opening valve 117 ', adjusting the flow rate of oxidation treatment gas using mass flow controller 116 and adjusting the opening degree of conductance valve 118, Close valve 117.
- the valve 105 is opened, the flow rate of the Si source gas is adjusted by the mass flow controller 103, the opening of the conductance valve 118 is adjusted, and then the valve 105 is closed.
- the valve 110 is opened, the flow rate of the bubbling gas is adjusted by the mass flow controller 108, the opening of the conductance valve 118 is adjusted, and then the valve 110 is closed.
- Step S34 the valve 117 is opened, and the flow rate of the oxidation process gas is adjusted by the mass flow controller 116. After adjusting the opening of the stance valve 118, close the valve 117.
- Steps S35 to S37 are the same as steps S32 to S34, and steps S35 to S37 are performed for the required number of cycles.
- steps S33 and S36 only the metal source gas is supplied in steps S33 and S36, but a mixed gas of the metal source gas and Si raw gas may be supplied.
- steps S33 to S36 the opening operation of the valve 105 and the valve 110, the flow rate adjustment by the mass flow controller 103 and the mass flow controller 108, the opening adjustment of the conductance valve 118, the valve 105 and the valve 110
- Each control operation of the closing operation is executed.
- step S31-S37 you may supply replacement gas (inert gas) simultaneously with oxidation treatment gas and raw material gas. In that case, it is only necessary to add control operations such as opening operation of valve 106, adjusting the flow rate of replacement gas (inert gas) by mass flow controller 104, and closing operation of valve 106 in each supply process. . Further, after each gas supply step in FIG. 8, a step of replacing the oxidation treatment gas and the source gas may be set.
- the valve 106 is opened, the flow rate is adjusted by the mass flow controller 104, the conductance valve 118 is adjusted, and the replacement gas source 102
- the replacement gas may be introduced into the film formation chamber 113.
- valve 218 is opened, the flow rate of the oxidation gas is adjusted by mass flow controller 217, and the opening degree of conductance valves 222 and 219 is adjusted. Then close valve 218.
- the Si source gas supply process opens the valve 206, adjusts the Si source gas flow rate by the mass flow controller 205, adjusts the opening of the conductance valves 222 and 219, and then closes the valve 206.
- the valve 209 is opened, the flow rate of the metal source gas is adjusted by the mass flow controller 208, and the opening of the conductance valves 222 and 219 is adjusted. After doing so, close valve 209.
- Step S44 the valve 218 is opened, the flow rate of the oxidation treatment gas is adjusted by the mass flow controller 217, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 218 is closed.
- Steps S45 to S47 are the same as steps S42 to S44, and steps S45 to S47 are performed for the required number of cycles.
- the control process shown in Fig. 9 only the metal source gas is supplied in steps S43 and S46. A mixed gas of the metal source gas and Si source gas may be supplied.
- the opening operation with the valve 209, the flow rate adjustment with the mass flow controllers 208 and 205, the opening adjustment of the conductance valves 222 and 219, and the closing operation of the valves 209 and 206 are executed.
- an inert gas may be supplied simultaneously with the oxidation treatment gas and the raw material waste.
- the valve 215 opening operation and the mass outlet controller 214 adjust the replacement gas flow rate and the valve 215 closing operation, or the valve 203 opening operation and the mass flow controller 202 replacement gas flow rate.
- Control and valve 203 closing operation or valve 212 opening operation and replacement gas flow rate adjustment by mass flow controller 211 and valve 212 closing operation should be added.
- a process of replacing the oxidation treatment gas and the source gas may be set.
- the opening operation of the valve 215 and the replacement gas flow rate adjustment by the mass flow controller 214 and the closing operation of the valve 215, or the opening operation of the valve 203 and the replacement by the mass flow controller 202 are performed.
- Adjust the gas flow rate and close the valve 203, or open the valve 212 adjust the replacement gas flow rate by the mass flow controller 211 and close the valve 212, and adjust the opening of the conductance valves 222 and 219.
- the replacement gas from the replacement gas source 213, 201, or 210 may be introduced into the film formation chamber 226.
- FIG. 10 is a sequence diagram showing a gas supply process of the film forming method according to the third embodiment of the present invention.
- oxidation residue is supplied onto the substrate to be processed.
- First step, second step for supplying Si source gas, which is the first source gas, third step for supplying metal source gas, which is the second source gas, and fourth step for supplying oxidation treatment gas are sequentially performed as the first cycle.
- a repeated cycle including the fifth step of supplying the metal source gas and the sixth step of supplying the oxidation treatment gas is executed a predetermined number of times.
- a mixed gas of the first source gas and the second source gas may be supplied.
- a step of replacing the oxidation treatment gas or the raw material gas with a replacement gas may be set.
- a replacement gas ⁇ may be introduced into the film formation chamber together with the source gas and the oxidation treatment gas as a carrier gas.
- step S51 In order to implement the gas supply sequence shown in FIG. 10 using the film forming apparatus shown in FIG. 2, it is preferable to use the control process shown in FIG. --Referring to FIG. 11, in the oxidation gas supply process of step S51, after opening the valve 117, adjusting the flow rate of the oxidation gas by the mass flow controller 116, and adjusting the opening of the conductance valve 118 Close valve 117.
- the valve 105 In the subsequent Si source gas supply process in step S52, the valve 105 is opened, the flow rate of the Si source gas is adjusted by the mass flow controller 103, the opening of the conductance valve 118 is adjusted, and then the valve 105 is closed.
- Step S53 the bubble 110 is opened, the flow rate of the bubbling gas is adjusted by the mass flow controller 108, the opening of the conductance valve 118 is adjusted, and then the valve 110 is closed.
- the valve 117 is opened, the flow rate of the oxidation treatment gas is adjusted by the mass flow controller 116, the opening degree of the conductance valve 118 is adjusted, and then the valve 117 is closed.
- Steps S55 to S56 are the same as steps S53 to S54, and steps S55 and S56 are performed for the required number of cycles.
- a replacement gas may be supplied simultaneously with the supply of the oxidation treatment gas and the raw material gas.
- control operations such as opening operation of the valve 106, adjusting the flow rate of the replacement gas (inert gas) by the mass port controller 104, and closing operation of the valve 106 are added. Just do it.
- a step of replacing the oxidation treatment gas and the source gas may be set. In that case, after closing the valve 117, the valve 105 or the valve 110, the valve 106 is opened, the flow rate of the replacement gas is adjusted by the mass flow controller 104, and the conductance valve 118 is adjusted.
- a replacement gas from the gas source 102 may be introduced into the film formation chamber 113.
- step S61 in the oxidizing gas supply process of step S61, after valve 218 is opened, the flow rate of oxidizing gas is adjusted by mass flow controller 217, and the opening degree of conductance valves 222 and 219 is adjusted. Close valve 218.
- step S62 in the Si source gas supply process, the valve 206 is opened, the flow rate of the Si source gas is adjusted by the mass flow controller 205, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 206 is closed.
- the valve 209 is opened, the flow rate of the metal source gas is adjusted by the mass flow controller 208, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 209 is closed.
- Step S65 to S66 are the same as steps S63 to S64, and steps S65 to S66 are performed for the required number of cycles.
- steps S63 and S65 only the metal source gas is used in steps S63 and S65. It is possible to supply a mixed gas of metal source gas and Si source gas. In that case, the opening operation of valves 209 and 206, the flow rate adjustment of the raw material gas by the mass outlet controllers 208 and 205, the opening adjustment of the conductance valves 222 and 219, and the closing operation of the valves 209 and 206 are controlled. Executed. In each gas supply process of steps S61 to S66, the replacement gas is supplied simultaneously with the supply of the oxidation treatment gas and the raw material gas.
- valve 215 opening operation and mass flow controller 214 replacement gas flow rate adjustment and valve 215 closing operation, or valves 20, 3 opening operation and mass flow controller 202 replacement Control operations such as gas flow rate adjustment and valve 203 closing operation, or valve 212 opening operation and replacement gas flow rate adjustment by mass flow controller 211 and valve 212 closing operation may be added.
- a step of replacing the oxidation treatment gas and the source gas may be provided.
- the opening operation of the valve 215 and the mass flow controller replacement gas flow control by the controller 214 and the closing operation of the valve 215, or the opening operation of the valve 203 and the replacement by the mass flow controller 202 Adjust the gas flow rate and close the valve 203, or open the valve 212 and replace it with the mass flow controller 211. Adjust the gas flow rate and close the valve 212, and adjust the opening of the conductance valves 222 and 219.
- a replacement gas from the replacement gas source 213, 201, or 210 may be introduced into the film formation chamber 226.
- FIG. 13 is a sequence diagram showing a gas supply process of the film forming method according to the fourth embodiment of the present invention.
- the first step of supplying the oxidation treatment gas onto the substrate to be processed, the second step of supplying the Si source gas as the first source gas, and the metal as the second source gas The third step of supplying the source gas and the fourth step of supplying the oxidation treatment gas are performed sequentially as the first cycle.
- the sixth step of supplying oxidation treatment gas, the seventh step of supplying metal source gas, and the eighth step of supplying oxidation treatment gas This repeated cycle is executed a predetermined number of times.
- valve 117 is opened, the flow rate of the oxidation gas is adjusted by mass flow controller 116, and the opening degree of conductance valve 118 is adjusted. Close valve 117.
- the valve 105 is opened, the flow rate of the Si source gas is adjusted by the mass flow controller 103, the opening of the conductance valve 118 is adjusted, and then the valve 105 is closed.
- the valve 110 is opened, the flow rate of the bubbling gas is adjusted by the mass flow controller 108, the opening of the conductance valve 118 is adjusted, and then the valve 110 is closed.
- the valve 117 is opened, the flow rate of the oxidation treatment gas is adjusted by the mass flow controller 116, the opening degree of the conductance valve 118 is adjusted, and then the valve 117 is closed.
- the valve 105 is opened, the flow rate of the Si source gas is adjusted by the mass flow controller 103, the opening of the conductance valve 118 is adjusted, and then the valve 105 is closed.
- the valve 117 is opened, the flow rate of the oxidation treatment gas is adjusted by the mass flow controller 116, the opening of the conductance valve 118 is adjusted, and then the valve 117 is closed.
- step S77 the valve 110 is opened, the flow rate of the bubbling gas is adjusted by the mass flow controller 108, the opening of the conductance valve 118 is adjusted, and then the valve 110 is closed.
- the valve 117 is opened, the flow rate of the oxidation treatment gas is adjusted by the mass flow controller 116, the opening of the conductance valve 118 is adjusted, and then the valve 117 is closed.
- steps S75 to S78 are performed for the necessary number of cycles.
- the metal source gas is supplied in steps S73 and S77, but it is also possible to supply a mixed gas of the metal source gas and the Si source gas.
- steps S73 and S77 the opening operation of valve 105 and valve 110, the flow rate adjustment by mass flow controller 103 and mass flow controller 108, the opening adjustment of conductance pulp 118, and the closing operation of valve 105 and valve 110 are performed.
- Each control operation is executed.
- a replacement gas in each gas supply process of steps S71 to S78, a replacement gas (inert gas) may be supplied simultaneously with the supply of the oxidation treatment gas and the raw material gas.
- the control operation of opening the valve 106, adjusting the flow rate of the replacement gas by the mass flow controller 104, and closing the valve 106 should be added at each gas supply stage.
- a step of replacing the oxidation treatment gas and the source gas may be set.
- the valve 106 is opened, the replacement gas flow rate is adjusted by the mass flow controller 104, the conductance valve 118 is adjusted, and the replacement gas source 102
- the replacement gas may be introduced into the film formation chamber 113.
- valve 218 is opened, the flow rate of oxidizing gas is adjusted by mass flow controller 217, and the opening degree of conductance valves 222 and 219 is adjusted. Close valve 218.
- the valve 206 is opened, the flow rate of the Si source gas is adjusted by the mass flow controller 205, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 206 is closed.
- valve 209 is opened, the flow rate of the metal source gas is adjusted by the mass flow controller 208, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 209 is closed.
- valve 218 is opened, the flow rate of the oxidation process gas is adjusted by the mass flow controller 217, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 218 is closed.
- valve 206 is opened and The flow rate of the Si source gas is adjusted by the sflow controller 205, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 206 is closed.
- valve 218 In the oxidation process gas supply process of the next step S86, the valve 218 is opened, the flow rate of the oxidation process gas is adjusted by the mass flow controller 217, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 218 is closed.
- valve 209 In the metal source gas supply process of the next step S87, valve 209 is opened, the flow rate of metal source gas is adjusted by mass flow controller 208, the opening of conductance valves 222 and 219 is adjusted, and then valve 209 is closed .
- step S88 the oxidizing gas supply process
- the valve 218 is opened, the flow rate of the oxidizing gas is adjusted by the mass port controller 217, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 218 is adjusted. Close. Then, the steps S85 to S88 are performed for the necessary number of cycles.
- a mixed gas of the metal source gas and Si source gas may be supplied.
- the opening operation of the valves 209 and 206, the flow rate adjustment by the mass flow controllers 208 and 205, the opening adjustment of the conductance valves 222 and 219, and the closing operation of the valves 209 and 206 are executed.
- a replacement gas in each gas supply process of steps S81 to S88, a replacement gas (inert gas) may be supplied simultaneously with the supply of the oxidation treatment gas and the raw material gas.
- the opening operation of the valve 215 and the flow adjustment by the mass flow controller 214 and the closing operation of the valve 215, or the opening operation of the valve 203 and the flow adjustment by the mass flow controller 202 and the closing of the valve 203 are performed. It is only necessary to add an operation or control operations of the valve 212 opening operation and the flow rate adjustment by the mass flow controller 211 and the valve 212 closing operation. Further, after each gas supply process of steps S81 to S88 in FIG. 15, a process of replacing the oxidation treatment gas and the raw material gas may be provided.
- valve 215 is opened and the flow rate is adjusted by the mass flow controller 214 and the valve 215 is closed, or the valve 203 is opened and the flow rate is adjusted by the mass flow controller 202 and the valve 203 , Or the valve 212 is opened, the flow rate is adjusted by the mass flow controller 211 and the valve 212 is closed.
- the opening of the sub valves 222 and 219 may be adjusted to introduce the replacement gas from the replacement gas source 213, 201, or 210 into the film formation chamber 226. , '
- FIG. 16 is a sequence diagram showing a gas supply process of the film forming method according to the fifth embodiment of the present invention.
- a first step of supplying an oxidation treatment gas onto a substrate to be processed a second step of supplying a Si source gas as a first source gas, and a metal as a second source gas
- the third step of supplying the source gas and the oxidation treatment gas is performed, and one cycle is performed including the purge step of replacing the gas used in the third step with a replacement gas.
- the steps from the first step to the purge step may be performed a plurality of times as a repeated cycle.
- a mixed gas of the first source gas and the second source gas and an oxidation treatment may be supplied.
- the replacement gas may be introduced into the film formation chamber together with the source gas and the oxidation treatment gas as a carrier gas.
- valve 117 is opened, the flow rate of oxidizing gas is adjusted by mass flow controller 116, the opening degree of conductance valve 118 is adjusted, and then valve 117 is set. Close.
- Step S92 In the Si source gas supply process of S92, the valve 105 is opened, the flow rate of the Si source gas is adjusted by the mass flow controller 103, the opening of the conductance valve 118 is adjusted, and then the valve 105 is closed.
- valve 110 and valve 117 are opened, the flow rate of bubbling gas and oxidation treatment gas is adjusted by mass flow controller 108 and mass flow controller 116, and conductance valve After adjusting the opening of 118, close valve 110 and valve 117.
- the source gas is a metal source. Although only the source gas is supplied, it is possible to supply a mixed gas of metal source gas and Si source gas. In that case, in step S93, valve 105, valve 110, and valve 117 are opened, mass flow controller 103, mass flow controller 108, and mass flow controller 116 are used to adjust the flow rate, conductance valve 118 is opened, valve 105, valve is controlled. Each control operation of the closing operation of 110 and valve 117 is executed. In each gas supply process of steps S91 to S93, a replacement gas (inert gas) may be supplied simultaneously with the supply of the oxidation treatment gas and the raw material gas.
- a replacement gas in each gas supply process of steps S91 to S93, a replacement gas (inert gas) may be supplied simultaneously with the supply of the oxidation treatment gas and the raw material gas.
- a stop mechanism acts on the adhesion of the metal element, and the metal element can be adhered independently of the initial surface state of the substrate to be processed.
- the metal element deposition density in one cycle can be reduced to lE14 atoms / cm 2 or less, the incubation time is shortened, and the metal element deposition linearity is improved.
- the features of the present invention are maintained not only when using the atomic layer adsorption deposition method but also when using the CVD method.
- the Hf deposition density can be controlled by adjusting the supply amount of the Si raw material.
- the supply amount of the S 1 raw material can be adjusted by the supply time and flow rate.
- the Hf deposition density can be adjusted according to the supply amount, but by optimizing the supply amount, changes in the Hf deposition density with respect to the supply amount are suppressed. Therefore, the supply amount of the Si raw material is preferably set in a region where the change in the Hf deposition density is suppressed from the viewpoint of reproducibility.
- the amount of Hf deposited can be adjusted by adjusting the partial pressure of the Si source gas in the Si source supply process. Can be controlled by.
- the Si source gas partial pressure is preferably lE- 4 Torr (0013 3 Pa) or more, and the Si source gas partial pressure can be appropriately adjusted according to the desired amount of Hf deposition.
- the Si source gas partial pressure exceeds 100 Torr (13332 Pa)
- the Si source gas partial pressure is preferably set to lOOTorr or less.
- the present invention uses only the adsorption sites on the surface of the substrate to be processed, it is desirable that no other adsorption sites exist.
- the Si raw material gas source when a raw material containing oxygen is used as the Si raw material gas source, the Si atoms adsorbed on the substrate to be treated are not separated from the oxygen source contained in the raw material in addition to the adsorption sites previously formed by the oxidation treatment gas. Adsorption sites due to the child are generated. Therefore, since Hf adheres to the surface of the substrate to be processed and the adsorption sites on the Si atoms, it is difficult to reduce the amount of adhesion. 'In other words, it is preferable that the source gas used does not contain oxygen.
- the first source gas is Si [(CH 3 ) 2 N] 4 , Si [(CH 3 ) 2 N] 3 H, Si [(C 2 H 5 ) 2 N] 3 H, Si [ It is desirable to be selected from the group consisting of (CH 3 ) 2 N] 2 H 2 .
- the second source gas contains Hf [(CH 3 ) 2 N] 4 , Hf [(CH 3 ) (C 2 H 5 ) N] 4 , Hf [(C 2 H 5 ) 2 N] 4 from the group consisting of Zr [(C 2 H 5 ) 2 N] 4 , Zr [(CH 3 ) 2 N] 4 , Zr [(CH 3 ) (C 2 H 5 ) N] 4 is preferably selected from each group, and when the metal element is A1, A1 (CH 3 ) 3 is preferable.
- the mixed gases are Si [(C 2 H 5 ) 2 N] 3 H, Si [(CH 3 ) 2 N] 4 , Si [(C 2 H 5 ) 2 N] 3 H, Si [(CH 3 ) 2 At least one Si raw material selected from the group consisting of N] 2 H 2 , Hf [(CH 3 ) 2 N] 4 , Hf [(CH 3 ) (C 2 H 5 ) N] 4 , Hf [(C 2 H 5 ) 2 N] 4 , Zr [(C 2 H 5 ) 2 N] 4 , Zr [(CH 3 ) 2 N] 4 , Zr [(CH 3 ) (C 2 H 5 ) N] 4 , Al ( It is desirable to mix at least one metal raw material selected from the group consisting of CH 3 ) 3 .
- the replacement gas used also as the carrier gas contains an inert gas, specifically, at least one selected from the group consisting of N 2 , Ar, and He.
- the adsorption site on the substrate to be processed formed by the acid treatment gas preferably contains oxygen atoms, more preferably 0H groups. Therefore, oxidation treatment gas
- the gas is preferably selected from the group consisting of oxygen, ozone, H 20 and D 20, and more preferably selected from the group consisting of H 20 and D 20 . '
- the temperature of the substrate to be processed is 200 ° C or lower, the adhesion reaction on the substrate to be processed becomes difficult to proceed, whereas when the temperature is 500 ° C or higher, the decomposition of the source gas proceeds. It is preferably in the range of ° C to 500 ° C, more preferably in the range of 200 ° C to 400 ° C.
- the substrate to be processed is preferably selected from the group consisting of SiO 2 and SiON in order to suppress degradation of device characteristics due to diffusion of metal elements onto the substrate.
- Hf adhesion density control is mainly described.
- the effect of the present invention described above is not only in the case of Hf, Zr and A1, but also in the case of La, Pr, Y, Ti and Ta. It can be obtained similarly. 'Several examples of the present invention will be described below.
- Example 1 a silicon substrate was used as a substrate to be processed, and film formation was performed on a natural oxide film, a silicon thermal oxide film, and a silicon acid-nitrified film on the silicon substrate.
- the film formation apparatus shown in FIG. 2 was used for film formation.
- the substrate temperature is in the range of 200 ° C to 500 ° C.
- Tetrajetylaminohafnium (Hf [(C 2 H 5 ) 2 N] 4 ) and trisdimethylamino silicon (HSi [N (CH 3 ) 2 ] 3 ) was used, and H 2 O was used as the oxidizing gas.
- - Figure 18 shows the outline of the raw material gas supply process in Example 1.
- H 2 O which is an oxidizing agent, is supplied onto the surface of the substrate to be processed (first step).
- H 2 0 is supplied at a flow rate of 20 sccm for 50 seconds by the mass flow controller.
- Si source gas is supplied (second step).
- Si raw material is supplied by controlling the flow rate from 2sccm to 20sccm by mass flow controller.
- the Si partial gas partial pressure during film formation was in the range of IE- 4 Torr (0 0133 Pa) to 0 3 Torr (40 OPa).
- the supply time was in the range of Osec to 300 sec.
- the temperature of the Si raw material was 45 ° C.
- Hf source gas is supplied (third step).
- Hf raw material flows from a container at 87 ° C It was supplied by bubbling 20 sccm nitrogen carrier gas.
- the supply time was in the range of 5 to 20 seconds. At this time, Hf raw material and Si raw material were also supplied [when they were supplied.
- the pressure during film formation was set in the range of IE- 4 Torr to lOOTorr.
- H 20 is supplied for the purpose of oxidizing the surface of Hf and Si elements (fourth step).
- the supply conditions of H 2 0 are the same as those in the first step.
- the first cycle is up to the fourth step.
- the second process to the fourth process were repeated, and this repeated cycle was performed in the range of 1 to 10 times. Moreover, it implemented also about the case where the process to substitute was provided between each process.
- FIG. 19 shows a control process of the film forming apparatus (FIG. 2) used in Example 1.
- Step S101 in the H 2 0 gas supply process of Step S101, after opening valve 117, adjusting the flow rate of H 2 0 gas by mass flow controller 116, and adjusting the opening of conductance valve 118, Close valve 117.
- Step S102 the valve 105 is opened, the volume of the Si source gas is adjusted by the mass port controller 103, the opening of the conductance valve 118 is adjusted, and then the valve 105 is closed.
- the valve 110 is opened, the flow rate of the bubbling gas is adjusted by the mass port controller 108, the opening of the conductance valve 118 is adjusted, and then the valve 110 is closed.
- the valve 117 is opened, the flow rate of H 2 0 gas is adjusted by the mass flow controller 116, the opening of the conductance valve 118 is adjusted, and then the valve 117 is closed.
- Steps S105 to S107 are the same as steps S102 to S104, and steps S105 to S107 were performed in the range of 1 to 100 cycles.
- steps S103 and S106 when supplying a mixed gas of Hf source gas and Si source gas, in steps S103 and S106, valve 105 and valve 110 are opened, and the flow rate by mass flow controller 103 and mass flow controller 108 is Adjustment Each control operation of opening control of the conductance valve 118 and closing operation of the valve 105 and the valve 110 is executed.
- FIG. 20 shows the supply time dependence of the Si raw material in the second step of the Hf deposition density in the case where the first cycle is formed on the surface of the natural oxide film of the silicon substrate. Note that the flow rate of the Si raw material in the second step is 20 scm. Also shown here is the Hf deposition density when only the Hf source is supplied in the third step and when a mixed gas of the Hf source and Si source is supplied.
- the amount of Hf deposited varies depending on the amount of Si raw material supplied in the second step, and when it reaches a certain amount of supply, it stops decreasing and the amount of 6E13 atoms ra 2 deposited is obtained. Also, in the region where the Hf deposition density stops decreasing relative to the Si raw material supply, the Hf deposition density is not affected by the difference in the source gas in the third process. This indicates that Si cannot adhere to the Hf deposition site determined by supplying only the Si raw material in advance according to the deposition mechanism of the present invention described with reference to FIG.
- Figure 21 shows the case where the first cycle of film formation was performed on the surface of the natural oxide film on the silicon substrate and the surface of the 19 A thermal oxide film.
- the amount of Hf deposition depends on the supply time of the Si raw material in the second step. Showing gender. Note that the flow rate of the Si raw material in the second step is 20 sccm. From Fig. 21, it can be seen that the difference in the Hf deposition density on the natural oxide film and the thermal oxide film is reduced by supplying the Si raw material. This is because there are many adsorption sites due to dangling bonds, etc. on the natural acid film compared to the thermal oxide film, and the difference in the adsorption sites is considered to be a factor of fluctuation of the Hf adhesion density. It is done.
- FIG. 22 shows the cycle number dependence of the Hf deposition density on the surface of the natural oxide film of the silicon substrate and the surface of the 19 A thermal oxide film.
- the flow rate of Si raw material in the second process Is 20 sccm
- the supply time is 300 sec
- the supply partial pressure is 0 05 Torr.
- the increase in Hf deposition density with respect to the number of cycles has good linearity regardless of the surface state of the substrate to be processed.
- Figure 23 shows the Si source supply time dependence in the second step of the in-plane uniformity (R / 2X) of the Hf deposition amount when one cycle of film is formed on the surface of the natural oxide film on the silicon substrate.
- the flow rate of the Si raw material in the second step is 20 sccm.
- In-plane uniformity is calculated from the measurement point of Hf adhesion amount in the plane as follows: (Maximum measurement value-Minimum measurement value) I (Average measurement value X 2) X 100 (%) .
- a uniformity of about 3% was obtained regardless of the supply time of the Si raw material, and a better uniformity was obtained compared to the conventional example.
- FIG. 24 shows the flow rate dependence of the Si raw material in the second step of the Hf adhesion density in the case where the first cycle of film formation was performed on the surface of the natural oxide film of the silicon substrate.
- the flow rate of the Si raw material in the second step is 20 sccm.
- the Hf deposition density decreases as the Si material flow rate increases. This indicates that the Hf deposition density can be controlled by the supply amount that can be adjusted by the supply time and flow rate of the Si raw material.
- FIG. 25 shows that the first cycle was formed on the surface of the natural oxide film of the silicon substrate: the dependence of the amount of Hf deposition on the supply time of the Hf raw material in the third step.
- the Si material flow rate is 20 sccm
- the supply time is lOsec.
- FIG. 26 shows the Si source gas partial pressure dependency of the Si source supply process in the second step of the Hf deposition amount in the case where the first cycle was formed on the surface of the natural oxide film of the silicon substrate.
- the Si material flow rate is 20 sccmn and the supply time is 300 sec. It is. From Fig. 26, it can be seen that the amount of Hf deposited decreases as the Si source gas partial pressure increases.
- Figure 27 shows the case where the first cycle of film formation was performed on the surface of a 19 A silicon thermal oxide film on a silicon substrate.
- the Si source supply partial pressure was 5 X 10_ 4 Torr (0.06
- the dependence of the Hf deposition amount on Si raw material supply time at 67 Pa) and 0 3 Torr (40 OPa) is shown.
- the amount of Hf deposition becomes constant as the Si raw material supply time increases at each Si partial pressure. Therefore, with the film forming apparatus of the present invention described above, it is possible to control the adhesion state of Si that determines the deposition site of Hf by the Si source gas partial pressure and the supply time.
- FIG. 27 it has a large process margin with respect to the supply time, and it can be seen that Si adhesion can be determined in a self-aligning manner.
- FIG. 28 shows the cycle number dependence of the amount of Hf deposited on the surface of the natural oxide film on the silicon substrate.
- FIG. 28 shows the cycle number dependence of the Hf deposition amount when the Si raw material supply step of the second step in Example 1 was not performed.
- the flow rate of the Si raw material is 20 scccni
- the supply time is 120 seconds
- the supply partial pressure is 5 X l (T 4 Torr (0.0667 Pa).
- adhesion amount of Hf is 1. 5E13atoms / cm 2, 1. can control deposition density an order of magnitude lower region than in the comparative example of 3E14atoms / cm 2 -. 29, on the natural oxide film on the silicon substrate Fig.
- FIG. 29 shows the dependence of the Hf deposition density on the temperature of the substrate to be processed when a single-layer film is formed
- Figure 29 shows that the Hf deposition density depends on the temperature when the temperature of the substrate to be processed is in the range of 300 ° C to 400 ° C. It can also be seen that when the substrate temperature to be processed is 200 ° C, the Hf deposition density is reduced compared to the substrate temperature of 300 ° C. Lowering the temperature of the substrate to be processed reduces the decomposition and adsorption of raw material residue on the substrate surface. In this way, it is suggested that the adhesion density can be further reduced by the temperature of the substrate to be processed, so that the Hf adhesion density can be further reduced in the present invention.
- the processing substrate temperature can be in the range of 200 ° C to 300 ° C. In order to perform stable film formation in consideration of the process margin with respect to the plate temperature, it is preferable to set the temperature in the range of 300 ° C to 400 ° C. '
- Example 1 the film was formed on the surface of the natural oxide or the thermal oxide film on the silicon substrate. However, the film is formed on the silicon oxynitride film on the silicon substrate. Similar results were obtained. .
- the second source gas is Si [(C 2 H 5 ) 2 N] 3 H, Si [(CH 3 ) 2 N] 4 , Si [(C 2 H 5 ) 2 N] 3 H, S i [(CH 3 ) 2 N] 2 H 2 and at least one -Si raw material selected from Hf [(C 2 H 5 ) 2 N] 4 , Hf [(CH 3 ) 2 N] 4 , Hf [ The above effect could be obtained even when a mixed raw material with at least one H f raw material selected from the group consisting of (CH 3 ) (C 2 H 5 ) N] 4 was used.
- the deposition density of Hf can be arbitrarily controlled not only by the number of film formation cycles but also by the supply amount of Si raw material and the supply partial pressure.
- Example 2 tetra as a first source gas containing Si - 1-but-denture silicon (Si [0 - 1- C 4 H 9] 4) different from the first embodiment in that with.
- the temperature of the Si raw material was 95 ° C, and the mass flow controller was used in the flow rate range of Osccm to 2sccm. Other conditions are the same as in Example 1. ',
- Fig. 30 shows the dependence of the amount of Hf deposition on the supply amount of Si material in the second step when one cycle of film is formed on the surface of the natural oxide film of the silicon substrate (substrate to be processed).
- the Hf deposition density is about 2E14 atoms / cm 2 regardless of the Si raw material supply rate. . That is, it is considered that one molecular layer of Hf0 2 is deposited on the silicon substrate, and Example 2 shows that the density of Hf deposition sites cannot be reduced by the Si raw material supply process. This can be attributed to the influence of oxygen contained in the Si raw material.
- Example 2 shows that it is desirable to use a raw material not containing oxygen as the silicon raw material in the film forming method of the present invention.
- FIG. 31 is a sequence diagram illustrating a gas supply method according to the third embodiment.
- the difference of Embodiment 3 from Embodiment 1 shown in FIG. 18 is the gas supply process in the repeated cycle after the fifth step. That is, in Embodiment 3, the third step the same fifth step (Hf raw material supply step), repeated cycles out with the same sixth step and the fourth step (H 2 0 supplying step) configuration
- the other conditions are the same as in Example 1.
- FIG. 32 shows a process for controlling the film forming apparatus used in Example 3.
- the valve 117 is opened, the flow rate of the H 2 0 gas is adjusted by the mass flow controller 116, the opening degree of the conductance valve 118 is adjusted, and then the valve 117 is turned on. close.
- the valve 105 is opened, the flow rate of the Si source gas is adjusted by the mass flow controller 103, the opening of the conductance valve '118 is adjusted, and then the valve 105 is closed.
- the valve 110 is opened, the flow rate of the bubbling gas is adjusted by the mass flow controller 108, the opening of the conductance valve 118 is adjusted, and then the valve 110 is closed.
- the valve 117 is opened, the flow rate of H 2 0 gas is adjusted by the mass port controller 116, the opening of the conductance valve 118 is adjusted, and then the valve 117 is closed. .
- Steps S115 to S116 were the same as steps S113 to S114, and steps S115 to S116 were performed in the range of 1 to 100 cycles.
- step S113 and step S115 when supplying a mixed gas of Hf raw material and Si raw material, valve 105 and valve 110 are opened, flow rate is adjusted by mass flow controller 103 and mass flow controller 108, and conductance valve 118 is opened. The control operation for closing the degree adjusting knob 105 and the valve 110 is executed.
- Example 3 the following effects were obtained.
- Control of Hf deposition density of 1E14 atoms / cra 2 or less per cycle can be realized by the number of cycles and Si raw material supply conditions.
- the Hf deposition site is determined in a self-limiting manner by the Si deposition site, and the Si deposition state can be determined in a self-limiting manner by the supply conditions of the Si raw material.
- FIG. 33 is a sequence diagram illustrating a gas supply method according to the fourth embodiment.
- Example 4 differs from the first embodiment shown in FIG. 18, in the fifth step after repeated cycles, the Si0 2 film forming process and Hf 0 2 film forming process is performed independently Les This is the point.
- the fifth step of supplying Si source gas, which is the first source gas, H 2 O gas is supplied.
- a repetitive cycle consisting of four steps of the sixth step of supplying, the seventh step of supplying Hf source gas as the second source gas, and the eighth step of supplying 3 ⁇ 40 gas was executed in the range of 1 to 100 cycles. . Also, the case where a gas replacement process was set between each @ was carried out.
- FIG. 34 shows the process for controlling the film forming apparatus used in Example 4.
- the valve 117 is opened, the flow rate of the H 2 0 gas is adjusted by the mass port controller 116, the opening of the conductance valve 118 is adjusted, and then the valve Close 117.
- the valve 105 is opened, the flow rate of the Si source gas is adjusted by the mass flow controller 103, and the opening of the co-, i, and re-tance valve 118 is adjusted, and then the valve 105 is set. close.
- the valve 110 is opened, the flow rate of the bubbling gas is adjusted by the mass flow controller 108, the opening of the conductance valve 118 is adjusted, and then the valve 110 is closed.
- the valve 117 is opened, the flow rate of the H 2 0 gas is adjusted by the mass port controller 116, the opening degree of the conductance vano rev 118 is adjusted, and then the valve 117 Close.
- next step S125 the Si source gas supply process
- the valve 105 is opened, the flow rate of the Si source gas is adjusted by the mass port controller 103, the opening of the conductance valve 118 is adjusted, and then the valve 105 is closed.
- the valve 117 is opened, the flow rate of H 2 0 is adjusted by the mass flow controller 116, the opening of the conductance valve 118 is adjusted, and then the valve 117 is closed.
- Step S127 In the Hf source gas supply process of S127, the valve 110 is opened and the flow rate of the bubbling gas is adjusted by the mass flow controller 108. After adjusting the opening of the conductance valve 118, the valve 110 is closed.
- the valve 117 is opened, the flow rate of the H 2 gas is adjusted by the mass flow controller 116, the opening of the conductance valve 118 is adjusted, and then the valve 117 is closed.
- step S125-step S128 was implemented in the range of 1-100 cycles.
- steps S123 and S127 the opening operation of valve 105 and valve 110, the flow rate adjustment by mass flow controller 103 and mass flow controller 108, and conductance valve 118 Control of opening adjustment and closing operation of valve 105 and valve 110 is executed.
- a replacement gas in the process gas supply process, an example of supplying a replacement gas (inert gas) at the same time as supplying the raw material gas was performed.
- Example 4 was subjected to a alternating lamination of Si0 2 molecule layer and HF0 2 molecule layer, there is no variation in the deposition density due to the target substrate surface condition, as a result, a good linearity from low deposition density regions The controllability we had was realized. In addition, the same result could be obtained even when X was set to replace the raw material gas and oxidation treatment gas between each process.
- FIG. 35 is a sequence diagram illustrating a gas supply method according to the fifth embodiment.
- the difference of Example 5 from Example 1 shown in FIG. 18 is that Hf source gas and H 2 0 gas, or Hf source gas, Si source gas and H 2 0 gas are supplied in the third process. It is a point that supplies at the same time.
- the film formation apparatus shown in FIG. 2 was used for film formation. In addition, a case where a gas replacement step was provided between each step was also carried out.
- FIG. 36 shows a control process of the film forming apparatus used in Example 5.
- valve 117 in the H 2 0 gas supply process of Step S131, the valve 117 is opened, the flow rate of the H 2 0 gas is adjusted by the mass flow controller 116, the opening of the conductance valve 118 is adjusted, and then the valve 117 is closed. .
- the valve 105 is opened, the flow rate of the Si source gas is adjusted by the mass flow controller 103, and the opening of the conductance valve 118 is adjusted. After doing so, close valve 105.
- valve 110 and valve 117 are opened, the flow rate of bubbling gas and 0 gas is adjusted by mass flow controller 108 and mass flow controller 116, and conductance valve 118 After adjusting the opening, close valve 110 and valve 117.
- the valve 105, valve 110 and valve 117 are opened, the mass flow controller 103, the mass flow controller 108 and the mass flow. Control operations of flow rate adjustment by the controller 116, opening adjustment of the conductance valve 118, and closing operation of the valve 105, the valve 110, and the valve 117 are executed.
- Example 5 when the Hf adhesion density with respect to the feed time of the raw material and H 2 O gas after the second step was evaluated, it was found that there was no incubation time; controllability with good linearity could be realized.
- the present invention suppresses the incubation time not only in the above-described atomic layer adsorption deposition method but also in the CVD method, and improves the controllability and reproducibility of the adhesion density.
- similar results could be obtained when a step for replacing the source gas and the acid treatment gas was set between the steps.
- FIG. 37 is a diagram illustrating a control process of the film forming apparatus according to the sixth embodiment.
- Example 6 the gas supply sequence of the second embodiment shown in FIG. 7 was performed by the film forming apparatus shown in FIG.
- valve 218 is opened, the flow rate of 0 gas is adjusted by mass flow controller 217, and the opening of conductance valves 222 and 219 is adjusted. Close valve 218.
- the valve 206 is opened, the flow rate of the Si source gas is adjusted by the mass flow controller 205, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 206 is closed.
- the Hf source gas supply process of the next step S143 after opening the valve 209, adjusting the flow rate of the Hf source gas by the mass port controller 208, and adjusting the opening of the conductance valves 222 and 219, Close Pulp 209.
- valve 218 is opened, the flow rate of H 2 0 gas is adjusted by the mass flow controller 217, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 218 is closed. .
- Step S145 to step S147 are the same as step S142 to step S144, and repeated cycles consisting of three steps of step S145 to step S147 were performed in the range of 1 to 100 cycles.
- steps S143 and S146 the valve 209 and valve 206 are opened, the flow rate is adjusted by the mass flow controller 208 and the mass flow controller 205, The opening control of conductance valves 222 and 219 and the closing operation of valves 209 and 206 are executed.
- the substrate to be processed is maintained at a temperature of 200 ° C to 500 ° C, and the pressure in the deposition chamber is set in the range of lE- 4 Torr to 1 OOTorr.
- Other detailed conditions are the same as those in the first to fourth embodiments.
- Example 6 when the same evaluation as in Example 1 to Example 4 was performed, the following effects were obtained.
- the deposition density of Hf can be arbitrarily controlled not only by the number of film formation cycles but also by the supply amount of Si raw material and the supply partial pressure.
- the effects of the present invention can be realized even when the source gas and the oxidation treatment gas are supplied along the surface of the substrate to be treated.
- FIG. 38 is a diagram showing a control process of the film forming apparatus in the seventh embodiment.
- Example 7 The gas supply sequence of the third embodiment shown in FIG. 10 is performed by the film forming apparatus shown in FIG. '
- valve 218 is opened, the flow rate of H 2 gas is adjusted by mass flow controller 217, and the opening of conductance valves 222 and 219 is adjusted. After; close valve 218.
- the valve 206 is opened, the flow rate of the Si source gas is adjusted by the mass port controller 205, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 206 is closed.
- valve 209 is opened, the flow rate of Zr source gas is adjusted by mass flow controller 208, the opening of conductance valves 222 and 219 is adjusted, and then valve 209 is closed. .
- the valve 218 is opened, the flow rate of the H 2 0 gas is adjusted by the mass flow controller 217, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 218 Close.
- Steps S155 to S156 are the same as steps S153 to S154, and steps S155 to S156 are repeated cycles.
- Example 7 differs from Example 1 described above in that tetrakisjetylaminozirconium (Zr [(C 2 H 5 ) 2 N] 4 ) was used as a metal raw material to form an oxide composed of Zr and Si. It has become. Other conditions are the same as in Example 1.
- Example 7 Example 7
- FIG. 39 is a diagram showing a control process of the film forming apparatus in Example 8.
- Example 8 the gas supply sequence of the fourth embodiment shown in FIG. 13 was performed by the film forming apparatus shown in FIG.
- valve 218 is opened, the flow rate of H 2 0 gas is adjusted by mass flow controller 217, and the opening adjustments of conductance valves 222 and 219 are adjusted. After doing so, close valve 218.
- step S162 in the Si source gas supply process, valve 206 is opened and mass flow controller 2 Adjust the flow rate of Si source gas with 05, adjust the opening of conductance valves 222 and 219, and then close valve 206.
- the A1 source gas supply process opens the valve 209, adjusts the flow rate of the A1 source gas by the mass port controller 208, adjusts the opening of the conductance valves 222 and 219, and then adjusts the valve Close 209.
- the valve 218 is opened, the flow rate of the H 2 0 gas is adjusted by the mass flow controller 217, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 218 is close.
- next step S165 Si source gas supply and process
- the valve 206 is opened, the flow rate of the Si source gas is adjusted by the mass port controller 205, and the opening of the conductance valves 222 and 219 is adjusted. Close.
- the valve 218 is opened, the flow rate of the H 2 0 gas is adjusted by the mass flow controller 217, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 218 is adjusted. Close.
- step S167 the valve 209 is opened, the flow rate of the A1 source gas is adjusted by the mass flow controller 208, the opening of the conductance valves 222 and 219 is adjusted, and then the valve 209 is closed.
- the valve 218 is opened, the flow rate of the H 2 0 gas is adjusted by the mass mouth controller 217, the opening of the conductance valves 222 and 219 is adjusted, and then the valve Close 218.
- Steps S165 to S168 are repeated cycles.
- Step S1 63 and Step S167 when supplying a mixed gas of A1 source gas and Si source gas, valves 209 and 206 are opened, flow rate is adjusted by mass flow controllers 208 and 205, and conductance valves 222 and 219 are opened. The control operation for adjusting the degree and closing the valves 209 and 206 is executed.
- Example 7 is different from Examples 6 and 7 described above in that trimethylaluminum (A1 (CH 3 ) 3 ) is used as a metal raw material to form an oxide composed of A1 and Si. Other conditions are the same as in Example 1. In Example 7, when the same evaluation as in Example 1 to Example 6 was performed, the same effect could be obtained.
- A1 (CH 3 ) 3 trimethylaluminum
- an oxidation processing gas is first supplied to the processing substrate, and the first source gas containing Si is supplied to the processing substrate. This is performed before the step of supplying the second source gas containing element M. This makes it possible to arbitrarily control the adhesion density of the metal element M by controlling the supply time of the first source gas and the partial pressure of the first source gas, and the following effects can be obtained. it can.
- the adhesion density of the metal element M can be arbitrarily controlled not only by the number of film formation cycles but also by the supply amount of Si raw material and the supply partial pressure.
- the deposition site of the metal element M is determined by the deposition state of Si, the 'deposition state is determined in a self-aligned manner and the growth stop mechanism works, resulting in good in-plane uniformity and controllability. Reproducibility and process margin can be obtained.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Formation Of Insulating Films (AREA)
- Chemical Vapour Deposition (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/083,214 US8034727B2 (en) | 2005-10-14 | 2006-10-13 | Method and apparatus for manufacturing semiconductor devices |
CN2006800382419A CN101288162B (zh) | 2005-10-14 | 2006-10-13 | 半导体装置的制造方法及其制造装置 |
JP2007540232A JPWO2007043709A1 (ja) | 2005-10-14 | 2006-10-13 | 半導体装置の製造方法およびその製造装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005299762 | 2005-10-14 | ||
JP2005-299762 | 2005-10-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2007043709A1 true WO2007043709A1 (ja) | 2007-04-19 |
WO2007043709A9 WO2007043709A9 (ja) | 2007-06-28 |
Family
ID=37942920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/320887 WO2007043709A1 (ja) | 2005-10-14 | 2006-10-13 | 半導体装置の製造方法およびその製造装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US8034727B2 (ja) |
JP (1) | JPWO2007043709A1 (ja) |
CN (1) | CN101288162B (ja) |
WO (1) | WO2007043709A1 (ja) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008042981A2 (en) * | 2006-10-05 | 2008-04-10 | Asm America, Inc. | Ald of metal silicate films |
JP2013026276A (ja) * | 2011-07-15 | 2013-02-04 | Hitachi Kokusai Electric Inc | 半導体装置の製造方法及び基板処理装置 |
JP2014116517A (ja) * | 2012-12-11 | 2014-06-26 | Tokyo Electron Ltd | 金属化合物膜の成膜方法、成膜装置、電子製品の製造方法および電子製品 |
JP2014116626A (ja) * | 2009-09-30 | 2014-06-26 | Hitachi Kokusai Electric Inc | 半導体装置の製造方法、基板処理方法および基板処理装置 |
JP2014532304A (ja) * | 2011-09-23 | 2014-12-04 | ノベラス・システムズ・インコーポレーテッドNovellus Systems Incorporated | プラズマ活性化されるコンフォーマル誘電体膜 |
WO2015140933A1 (ja) * | 2014-03-18 | 2015-09-24 | 株式会社日立国際電気 | 半導体装置の製造方法、基板処理装置及び記録媒体 |
US9611544B2 (en) | 2010-04-15 | 2017-04-04 | Novellus Systems, Inc. | Plasma activated conformal dielectric film deposition |
JP2017085165A (ja) * | 2013-07-31 | 2017-05-18 | 東京エレクトロン株式会社 | シリコン膜の成膜方法 |
US9673041B2 (en) | 2010-04-15 | 2017-06-06 | Lam Research Corporation | Plasma assisted atomic layer deposition titanium oxide for patterning applications |
US9685320B2 (en) | 2010-09-23 | 2017-06-20 | Lam Research Corporation | Methods for depositing silicon oxide |
US9773643B1 (en) | 2016-06-30 | 2017-09-26 | Lam Research Corporation | Apparatus and method for deposition and etch in gap fill |
US9786570B2 (en) | 2012-11-08 | 2017-10-10 | Novellus Systems, Inc. | Methods for depositing films on sensitive substrates |
US9793110B2 (en) | 2010-04-15 | 2017-10-17 | Lam Research Corporation | Gapfill of variable aspect ratio features with a composite PEALD and PECVD method |
US9875891B2 (en) | 2014-11-24 | 2018-01-23 | Lam Research Corporation | Selective inhibition in atomic layer deposition of silicon-containing films |
US9892917B2 (en) | 2010-04-15 | 2018-02-13 | Lam Research Corporation | Plasma assisted atomic layer deposition of multi-layer films for patterning applications |
US9997357B2 (en) | 2010-04-15 | 2018-06-12 | Lam Research Corporation | Capped ALD films for doping fin-shaped channel regions of 3-D IC transistors |
US10037884B2 (en) | 2016-08-31 | 2018-07-31 | Lam Research Corporation | Selective atomic layer deposition for gapfill using sacrificial underlayer |
US10043655B2 (en) | 2010-04-15 | 2018-08-07 | Novellus Systems, Inc. | Plasma activated conformal dielectric film deposition |
US10062563B2 (en) | 2016-07-01 | 2018-08-28 | Lam Research Corporation | Selective atomic layer deposition with post-dose treatment |
US10269559B2 (en) | 2017-09-13 | 2019-04-23 | Lam Research Corporation | Dielectric gapfill of high aspect ratio features utilizing a sacrificial etch cap layer |
US11646198B2 (en) | 2015-03-20 | 2023-05-09 | Lam Research Corporation | Ultrathin atomic layer deposition film accuracy thickness control |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9139906B2 (en) | 2001-03-06 | 2015-09-22 | Asm America, Inc. | Doping with ALD technology |
JP6568127B2 (ja) * | 2017-03-02 | 2019-08-28 | 株式会社Kokusai Electric | 半導体装置の製造方法、プログラム及び記録媒体 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001203198A (ja) * | 2000-01-20 | 2001-07-27 | Hitachi Ltd | 表面に絶縁膜を有するシリコン基板およびその製造方法および装置 |
JP2003209110A (ja) * | 2002-01-17 | 2003-07-25 | Sony Corp | 金属酸窒化膜の製造方法および絶縁ゲート型電界効果トランジスタおよびその製造方法 |
JP2005045166A (ja) * | 2003-07-25 | 2005-02-17 | Toshiba Corp | 半導体装置及びその製造方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4727085B2 (ja) | 2000-08-11 | 2011-07-20 | 東京エレクトロン株式会社 | 基板処理装置および処理方法 |
EP1308992A4 (en) * | 2000-08-11 | 2006-01-18 | Tokyo Electron Ltd | DEVICE AND METHOD FOR TREATING SUBSTRATES |
CN1261986C (zh) * | 2001-08-23 | 2006-06-28 | 日本电气株式会社 | 含高介电常数绝缘膜的半导体设备和该设备的制造方法 |
US6846516B2 (en) * | 2002-04-08 | 2005-01-25 | Applied Materials, Inc. | Multiple precursor cyclical deposition system |
JP3627106B2 (ja) | 2002-05-27 | 2005-03-09 | 株式会社高純度化学研究所 | 原子層吸着堆積法によるハフニウムシリケート薄膜の製造方法 |
JP2004079753A (ja) | 2002-08-16 | 2004-03-11 | Tokyo Electron Ltd | 半導体装置の製造方法 |
JP4542807B2 (ja) * | 2004-03-31 | 2010-09-15 | 東京エレクトロン株式会社 | 成膜方法および成膜装置、ならびにゲート絶縁膜の形成方法 |
US7402534B2 (en) * | 2005-08-26 | 2008-07-22 | Applied Materials, Inc. | Pretreatment processes within a batch ALD reactor |
-
2006
- 2006-10-13 WO PCT/JP2006/320887 patent/WO2007043709A1/ja active Application Filing
- 2006-10-13 JP JP2007540232A patent/JPWO2007043709A1/ja not_active Withdrawn
- 2006-10-13 CN CN2006800382419A patent/CN101288162B/zh not_active Expired - Fee Related
- 2006-10-13 US US12/083,214 patent/US8034727B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001203198A (ja) * | 2000-01-20 | 2001-07-27 | Hitachi Ltd | 表面に絶縁膜を有するシリコン基板およびその製造方法および装置 |
JP2003209110A (ja) * | 2002-01-17 | 2003-07-25 | Sony Corp | 金属酸窒化膜の製造方法および絶縁ゲート型電界効果トランジスタおよびその製造方法 |
JP2005045166A (ja) * | 2003-07-25 | 2005-02-17 | Toshiba Corp | 半導体装置及びその製造方法 |
Cited By (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008042981A3 (en) * | 2006-10-05 | 2008-09-18 | Asm Inc | Ald of metal silicate films |
WO2008042981A2 (en) * | 2006-10-05 | 2008-04-10 | Asm America, Inc. | Ald of metal silicate films |
JP2014116626A (ja) * | 2009-09-30 | 2014-06-26 | Hitachi Kokusai Electric Inc | 半導体装置の製造方法、基板処理方法および基板処理装置 |
US11011379B2 (en) | 2010-04-15 | 2021-05-18 | Lam Research Corporation | Capped ALD films for doping fin-shaped channel regions of 3-D IC transistors |
US10043655B2 (en) | 2010-04-15 | 2018-08-07 | Novellus Systems, Inc. | Plasma activated conformal dielectric film deposition |
US10043657B2 (en) | 2010-04-15 | 2018-08-07 | Lam Research Corporation | Plasma assisted atomic layer deposition metal oxide for patterning applications |
US11133180B2 (en) | 2010-04-15 | 2021-09-28 | Lam Research Corporation | Gapfill of variable aspect ratio features with a composite PEALD and PECVD method |
US9611544B2 (en) | 2010-04-15 | 2017-04-04 | Novellus Systems, Inc. | Plasma activated conformal dielectric film deposition |
US10559468B2 (en) | 2010-04-15 | 2020-02-11 | Lam Research Corporation | Capped ALD films for doping fin-shaped channel regions of 3-D IC transistors |
US10361076B2 (en) | 2010-04-15 | 2019-07-23 | Lam Research Corporation | Gapfill of variable aspect ratio features with a composite PEALD and PECVD method |
US9997357B2 (en) | 2010-04-15 | 2018-06-12 | Lam Research Corporation | Capped ALD films for doping fin-shaped channel regions of 3-D IC transistors |
US9673041B2 (en) | 2010-04-15 | 2017-06-06 | Lam Research Corporation | Plasma assisted atomic layer deposition titanium oxide for patterning applications |
US9892917B2 (en) | 2010-04-15 | 2018-02-13 | Lam Research Corporation | Plasma assisted atomic layer deposition of multi-layer films for patterning applications |
US9793110B2 (en) | 2010-04-15 | 2017-10-17 | Lam Research Corporation | Gapfill of variable aspect ratio features with a composite PEALD and PECVD method |
US9685320B2 (en) | 2010-09-23 | 2017-06-20 | Lam Research Corporation | Methods for depositing silicon oxide |
JP2013026276A (ja) * | 2011-07-15 | 2013-02-04 | Hitachi Kokusai Electric Inc | 半導体装置の製造方法及び基板処理装置 |
JP2014532304A (ja) * | 2011-09-23 | 2014-12-04 | ノベラス・システムズ・インコーポレーテッドNovellus Systems Incorporated | プラズマ活性化されるコンフォーマル誘電体膜 |
US9786570B2 (en) | 2012-11-08 | 2017-10-10 | Novellus Systems, Inc. | Methods for depositing films on sensitive substrates |
US10741458B2 (en) | 2012-11-08 | 2020-08-11 | Novellus Systems, Inc. | Methods for depositing films on sensitive substrates |
US10008428B2 (en) | 2012-11-08 | 2018-06-26 | Novellus Systems, Inc. | Methods for depositing films on sensitive substrates |
JP2014116517A (ja) * | 2012-12-11 | 2014-06-26 | Tokyo Electron Ltd | 金属化合物膜の成膜方法、成膜装置、電子製品の製造方法および電子製品 |
JP2017085164A (ja) * | 2013-07-31 | 2017-05-18 | 東京エレクトロン株式会社 | 薄膜の成膜方法 |
JP2017085165A (ja) * | 2013-07-31 | 2017-05-18 | 東京エレクトロン株式会社 | シリコン膜の成膜方法 |
US9916976B2 (en) | 2014-03-18 | 2018-03-13 | Hitachi Kokusai Electric Inc. | Method of manufacturing semiconductor device, substrate processing apparatus, and recording medium |
JPWO2015140933A1 (ja) * | 2014-03-18 | 2017-04-06 | 株式会社日立国際電気 | 半導体装置の製造方法、基板処理装置及び記録媒体 |
WO2015140933A1 (ja) * | 2014-03-18 | 2015-09-24 | 株式会社日立国際電気 | 半導体装置の製造方法、基板処理装置及び記録媒体 |
US9875891B2 (en) | 2014-11-24 | 2018-01-23 | Lam Research Corporation | Selective inhibition in atomic layer deposition of silicon-containing films |
US10804099B2 (en) | 2014-11-24 | 2020-10-13 | Lam Research Corporation | Selective inhibition in atomic layer deposition of silicon-containing films |
US11646198B2 (en) | 2015-03-20 | 2023-05-09 | Lam Research Corporation | Ultrathin atomic layer deposition film accuracy thickness control |
US10373806B2 (en) | 2016-06-30 | 2019-08-06 | Lam Research Corporation | Apparatus and method for deposition and etch in gap fill |
US9773643B1 (en) | 2016-06-30 | 2017-09-26 | Lam Research Corporation | Apparatus and method for deposition and etch in gap fill |
US10957514B2 (en) | 2016-06-30 | 2021-03-23 | Lam Research Corporation | Apparatus and method for deposition and etch in gap fill |
US10062563B2 (en) | 2016-07-01 | 2018-08-28 | Lam Research Corporation | Selective atomic layer deposition with post-dose treatment |
US10679848B2 (en) | 2016-07-01 | 2020-06-09 | Lam Research Corporation | Selective atomic layer deposition with post-dose treatment |
US10037884B2 (en) | 2016-08-31 | 2018-07-31 | Lam Research Corporation | Selective atomic layer deposition for gapfill using sacrificial underlayer |
US10269559B2 (en) | 2017-09-13 | 2019-04-23 | Lam Research Corporation | Dielectric gapfill of high aspect ratio features utilizing a sacrificial etch cap layer |
Also Published As
Publication number | Publication date |
---|---|
US8034727B2 (en) | 2011-10-11 |
US20090253229A1 (en) | 2009-10-08 |
CN101288162A (zh) | 2008-10-15 |
WO2007043709A9 (ja) | 2007-06-28 |
CN101288162B (zh) | 2010-06-09 |
JPWO2007043709A1 (ja) | 2009-04-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2007043709A1 (ja) | 半導体装置の製造方法およびその製造装置 | |
US20210118667A1 (en) | Method of topology-selective film formation of silicon oxide | |
US10388530B2 (en) | Method of manufacturing semiconductor device and substrate processing apparatus | |
US7205247B2 (en) | Atomic layer deposition of hafnium-based high-k dielectric | |
Kamiyama et al. | Comparison between SiO2 films deposited by atomic layer deposition with SiH2 [N (CH3) 2] 2 and SiH [N (CH3) 2] 3 precursors | |
WO2002048427A1 (fr) | Procede et dispositif servant a creer une couche mince | |
US20060258078A1 (en) | Atomic layer deposition of high-k metal oxides | |
US20080119057A1 (en) | Method of clustering sequential processing for a gate stack structure | |
US20080020593A1 (en) | ALD of metal silicate films | |
US8372481B2 (en) | Methods of forming material on a substrate, and a method of forming a field effect transistor gate oxide on a substrate | |
JPWO2005071723A1 (ja) | 半導体装置の製造方法および基板処理装置 | |
WO2006088062A1 (ja) | 半導体デバイスの製造方法および基板処理装置 | |
JPWO2006028215A1 (ja) | 薄膜キャパシタ及びその形成方法、及びコンピュータ読み取り可能な記憶媒体 | |
KR20070114393A (ko) | 산화규소 함유 필름의 형성 방법 | |
TW201909427A (zh) | 金屬閘極之低厚度相依功函數nMOS整合 | |
JP4356943B2 (ja) | 基板処理装置及び半導体装置の製造方法 | |
JP2003264190A (ja) | 半導体装置及びその製造方法 | |
WO2021193160A1 (ja) | 炭化ケイ素含有膜を形成する方法及び装置 | |
JP4032889B2 (ja) | 絶縁膜の形成方法 | |
JP2004296820A (ja) | 半導体装置の製造方法及び基板処理装置 | |
TWI235422B (en) | Manufacturing method for semiconductor device | |
US20050170665A1 (en) | Method of forming a high dielectric film | |
KR100425579B1 (ko) | 게르마늄 조성비에 따라 다른 종류의 소스를 사용하는실리콘 게르마늄 박막 형성 방법 | |
JP2011054680A (ja) | 半導体装置の製造方法及び製造装置 | |
JPH07235530A (ja) | 絶縁膜の形成方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200680038241.9 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
ENP | Entry into the national phase |
Ref document number: 2007540232 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12083214 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 06821965 Country of ref document: EP Kind code of ref document: A1 |