JP4916257B2 - 酸化膜の形成方法、酸化膜の形成装置及びプログラム - Google Patents
酸化膜の形成方法、酸化膜の形成装置及びプログラム Download PDFInfo
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- JP4916257B2 JP4916257B2 JP2006242043A JP2006242043A JP4916257B2 JP 4916257 B2 JP4916257 B2 JP 4916257B2 JP 2006242043 A JP2006242043 A JP 2006242043A JP 2006242043 A JP2006242043 A JP 2006242043A JP 4916257 B2 JP4916257 B2 JP 4916257B2
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- oxide film
- gas
- nitriding
- forming
- reaction chamber
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- 238000000034 method Methods 0.000 title claims description 54
- 239000007789 gas Substances 0.000 claims description 196
- 238000006243 chemical reaction Methods 0.000 claims description 148
- 238000005121 nitriding Methods 0.000 claims description 73
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 51
- 230000001590 oxidative effect Effects 0.000 claims description 41
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 34
- 229910052760 oxygen Inorganic materials 0.000 claims description 33
- 239000001301 oxygen Substances 0.000 claims description 32
- 150000003254 radicals Chemical class 0.000 claims description 32
- 238000001179 sorption measurement Methods 0.000 claims description 27
- 229910052757 nitrogen Inorganic materials 0.000 claims description 25
- 229910021529 ammonia Inorganic materials 0.000 claims description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 18
- 125000003277 amino group Chemical group 0.000 claims description 12
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 claims description 11
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 5
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000010931 gold Substances 0.000 claims description 4
- 229910052735 hafnium Inorganic materials 0.000 claims description 4
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 4
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims description 4
- 239000001272 nitrous oxide Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 4
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052787 antimony Inorganic materials 0.000 claims description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052732 germanium Inorganic materials 0.000 claims description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 229910052746 lanthanum Inorganic materials 0.000 claims description 3
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 3
- 229910052704 radon Inorganic materials 0.000 claims description 3
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- 229910052714 tellurium Inorganic materials 0.000 claims description 3
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- LXEXBJXDGVGRAR-UHFFFAOYSA-N trichloro(trichlorosilyl)silane Chemical compound Cl[Si](Cl)(Cl)[Si](Cl)(Cl)Cl LXEXBJXDGVGRAR-UHFFFAOYSA-N 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000010408 film Substances 0.000 description 73
- 235000012431 wafers Nutrition 0.000 description 63
- 239000004065 semiconductor Substances 0.000 description 52
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 38
- 229910052814 silicon oxide Inorganic materials 0.000 description 33
- -1 oxygen radicals Chemical class 0.000 description 27
- 230000008569 process Effects 0.000 description 17
- 230000003647 oxidation Effects 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 9
- 238000010926 purge Methods 0.000 description 8
- 239000012895 dilution Substances 0.000 description 7
- 238000010790 dilution Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 239000010453 quartz Substances 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000003085 diluting agent Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002052 molecular layer Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- ODUCDPQEXGNKDN-UHFFFAOYSA-N Nitrogen oxide(NO) Natural products O=N ODUCDPQEXGNKDN-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910003902 SiCl 4 Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- 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]
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- 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
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- C23C16/40—Oxides
- C23C16/401—Oxides containing silicon
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C16/45536—Use of plasma, radiation or electromagnetic fields
- C23C16/45542—Plasma being used non-continuously during the ALD reactions
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- 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
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- 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
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- C23C16/45544—Atomic layer deposition [ALD] characterized by the apparatus
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- 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
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- 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
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- H—ELECTRICITY
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- 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
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
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- H01L21/02164—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 being a silicon oxide, e.g. SiO2
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- H01L21/02214—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 the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si the compound comprising silicon and oxygen
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- 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
- H01L21/02274—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 in the presence of a plasma [PECVD]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
- H01L21/0228—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition deposition by cyclic CVD, e.g. ALD, ALE, pulsed CVD
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Description
被処理体が収容された反応室内に窒化ガスのラジカルを供給し、前記被処理体を窒化する窒化ステップと、
前記反応室内に、ソース元素を含み、アミノ基を含まないソースガスを供給し、前記窒化ステップで窒化された被処理体に該ソース元素を吸着させる吸着ステップと、
前記反応室内に、酸素、オゾン、または、水蒸気からなる酸化ガスのラジカルを供給し、前記吸着ステップで吸着されたソース元素を酸化させ、前記被処理体に酸化膜を形成する酸化膜形成ステップと、を備え、
前記窒化ステップと、前記吸着ステップと、前記酸化膜形成ステップとを、この順に複数回繰り返す、ことを特徴とする。
前記窒化ステップでは、前記窒化ガスに、アンモニア、窒素、酸化窒素、亜酸化窒素、又は、二酸化窒素を用いることが好ましい。
前記窒化ステップでは、0.133Pa〜13.3kPaに設定されたプラズマ発生室に窒化ガスを供給して窒化ガスのラジカルを形成し、形成した窒化ガスのラジカルを前記プラズマ発生室から前記反応室内に供給することが好ましい。
前記窒化ステップでは、前記プラズマ発生室に窒化ガスを10sccm〜50slm供給することが好ましい。
前記吸着ステップでは、前記反応室内にソースガスを10sccm〜10slm供給することが好ましい。
前記酸化膜形成ステップでは、0.133Pa〜13.3kPaに設定されたプラズマ発生室に酸化ガスを供給して酸化ガスのラジカルを形成し、形成した酸化ガスのラジカルを前記プラズマ発生室から前記反応室内に供給することが好ましい。
前記酸化膜形成ステップでは、前記プラズマ発生室に酸化ガスを10sccm〜50slm供給することが好ましい。
被処理体を収容する反応室と、
前記反応室内に、ソース元素を含み、アミノ基を含まないソースガスを供給するソースガス供給手段と、
前記反応室内に、酸素、オゾン、または、水蒸気からなる酸化ガスのラジカルを供給する酸化ガスラジカル供給手段と、
前記反応室内に窒化ガスのラジカルを供給する窒化ガスラジカル供給手段と、
装置の各部を制御する制御手段と、を備え、
前記制御手段は、
前記窒化ガスラジカル供給手段を制御して前記反応室内に窒化ガスのラジカルを供給し、前記反応室内に収容された被処理体を窒化し、
前記ソースガス供給手段を制御して前記反応室内にソースガスを供給し、前記窒化された被処理体に該ソース元素を吸着させ、
前記酸化ガスラジカル供給手段を制御して前記反応室内に酸化ガスのラジカルを供給し、吸着されたソース元素を酸化させ、前記被処理体に酸化膜を形成する、
処理を複数回繰り返す、ことを特徴とする。
コンピュータに、
被処理体が収容された反応室内に窒化ガスのラジカルを供給し、前記被処理体を窒化する窒化ステップと、
前記反応室内に、ソース元素を含み、アミノ基を含まないソースガスを供給し、前記窒化ステップで窒化された被処理体に該ソース元素を吸着させる吸着ステップと、
前記反応室内に、酸素、オゾン、または、水蒸気からなる酸化ガスのラジカルを供給し、前記吸着ステップで吸着されたソース元素を酸化させ、前記被処理体に酸化膜を形成する酸化膜形成ステップと、を備え、
前記窒化ステップと、前記吸着ステップと、前記酸化膜形成ステップとを、この順に複数回繰り返す手順、を実行させることを特徴とする。
圧力計(群)123は、反応管2内及び排気管内などの各部の圧力を測定し、その測定値を制御部100に通知する。
真空ポンプ127は、排気管に接続され、反応管2内のガスを排気する。
RAM113は、CPU115のワークエリアなどとして機能する。
バス116は、各部の間で情報を伝達する。
2 反応管
3 排気部
4 排気口
5 蓋体
6 ウエハボート
7 昇温用ヒータ
8、9 処理ガス供給管
10 プラズマ発生部
11 電極
100 制御部
111 レシピ記憶部
112 ROM
113 RAM
114 I/Oポート
115 CPU
116 バス
121 操作パネル
122 温度センサ
123 圧力計
124 ヒータコントローラ
125 MFC
126 バルブ制御部
127 真空ポンプ
128 ボートエレベータ
129 プラズマ制御部
W 半導体ウエハ
Claims (15)
- 被処理体が収容された反応室内に窒化ガスのラジカルを供給し、前記被処理体を窒化する窒化ステップと、
前記反応室内に、ソース元素を含み、アミノ基を含まないソースガスを供給し、前記窒化ステップで窒化された被処理体に該ソース元素を吸着させる吸着ステップと、
前記反応室内に、酸素、オゾン、または、水蒸気からなる酸化ガスのラジカルを供給し、前記吸着ステップで吸着されたソース元素を酸化させ、前記被処理体に酸化膜を形成する酸化膜形成ステップと、を備え、
前記窒化ステップと、前記吸着ステップと、前記酸化膜形成ステップとを、この順に複数回繰り返す、ことを特徴とする酸化膜の形成方法。 - 前記吸着ステップでは、前記ソースガスに、ゲルマニウム、アンチモン、テルル、ハフニウム、アルミニウム、ジルコニウム、ストロンチウム、チタン、イットリウム、ランタン、ラドン、タンタル、バリウム、タングステン、銅、銀、金のいずれかのソース元素を含み、かつ、アミノ基を含まないガスを用いる、ことを特徴とする請求項1に記載の酸化膜の形成方法。
- 前記ソース元素がシリコンであり、前記ソースガスに、モノシラン、四塩化シラン、ジシラン、ヘキサクロロジシラン、または、TEOSを用いる、ことを特徴とする請求項1に記載の酸化膜の形成方法。
- 前記反応室内を室温〜800℃に設定する、ことを特徴とする請求項1乃至3のいずれか1項に記載の酸化膜の形成方法。
- 前記窒化ステップでは、前記窒化ガスに、アンモニア、窒素、酸化窒素、亜酸化窒素、又は、二酸化窒素を用いる、ことを特徴とする請求項1乃至4のいずれか1項に記載の酸化膜の形成方法。
- 前記窒化ステップでは、前記反応室内を0.133Pa〜13.3kPaに設定する、ことを特徴とする請求項1乃至5のいずれか1項に記載の酸化膜の形成方法。
- 前記窒化ステップでは、0.133Pa〜13.3kPaに設定されたプラズマ発生室に窒化ガスを供給して窒化ガスのラジカルを形成し、形成した窒化ガスのラジカルを前記プラズマ発生室から前記反応室内に供給する、ことを特徴とする請求項1乃至6のいずれか1項に記載の酸化膜の形成方法。
- 前記窒化ステップでは、前記プラズマ発生室に窒化ガスを10sccm〜50slm供給する、ことを特徴とする請求項7に記載の酸化膜の形成方法。
- 前記吸着ステップでは、前記反応室内を0.133Pa〜13.3kPaに設定する、ことを特徴とする請求項1乃至8のいずれか1項に記載の酸化膜の形成方法。
- 前記吸着ステップでは、前記反応室内にソースガスを10sccm〜10slm供給する、ことを特徴とする請求項1乃至9のいずれか1項に記載の酸化膜の形成方法。
- 前記酸化膜形成ステップでは、前記反応室内を0.133Pa〜13.3kPaに設定する、ことを特徴とする請求項1乃至10のいずれか1項に記載の酸化膜の形成方法。
- 前記酸化膜形成ステップでは、0.133Pa〜13.3kPaに設定されたプラズマ発生室に酸化ガスを供給して酸化ガスのラジカルを形成し、形成した酸化ガスのラジカルを前記プラズマ発生室から前記反応室内に供給する、ことを特徴とする請求項1乃至11のいずれか1項に記載の酸化膜の形成方法。
- 前記酸化膜形成ステップでは、前記プラズマ発生室に酸化ガスを10sccm〜50slm供給する、ことを特徴とする請求項12に記載の酸化膜の形成方法。
- 被処理体を収容する反応室と、
前記反応室内に、ソース元素を含み、アミノ基を含まないソースガスを供給するソースガス供給手段と、
前記反応室内に、酸素、オゾン、または、水蒸気からなる酸化ガスのラジカルを供給する酸化ガスラジカル供給手段と、
前記反応室内に窒化ガスのラジカルを供給する窒化ガスラジカル供給手段と、
装置の各部を制御する制御手段と、を備え、
前記制御手段は、
前記窒化ガスラジカル供給手段を制御して前記反応室内に窒化ガスのラジカルを供給し、前記反応室内に収容された被処理体を窒化し、
前記ソースガス供給手段を制御して前記反応室内にソースガスを供給し、前記窒化された被処理体に該ソース元素を吸着させ、
前記酸化ガスラジカル供給手段を制御して前記反応室内に酸化ガスのラジカルを供給し、吸着されたソース元素を酸化させ、前記被処理体に酸化膜を形成する、
処理を複数回繰り返す、ことを特徴とする酸化膜の形成装置。 - コンピュータに、
被処理体が収容された反応室内に窒化ガスのラジカルを供給し、前記被処理体を窒化する窒化ステップと、
前記反応室内に、ソース元素を含み、アミノ基を含まないソースガスを供給し、前記窒化ステップで窒化された被処理体に該ソース元素を吸着させる吸着ステップと、
前記反応室内に、酸素、オゾン、または、水蒸気からなる酸化ガスのラジカルを供給し、前記吸着ステップで吸着されたソース元素を酸化させ、前記被処理体に酸化膜を形成する酸化膜形成ステップと、を備え、
前記窒化ステップと、前記吸着ステップと、前記酸化膜形成ステップとを、この順に複数回繰り返す手順、を実行させるためのプログラム。
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US7605095B2 (en) * | 2007-02-14 | 2009-10-20 | Tokyo Electron Limited | Heat processing method and apparatus for semiconductor process |
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