JP4576201B2 - 三酸化モリブデン層の作製方法 - Google Patents
三酸化モリブデン層の作製方法 Download PDFInfo
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- JP4576201B2 JP4576201B2 JP2004310331A JP2004310331A JP4576201B2 JP 4576201 B2 JP4576201 B2 JP 4576201B2 JP 2004310331 A JP2004310331 A JP 2004310331A JP 2004310331 A JP2004310331 A JP 2004310331A JP 4576201 B2 JP4576201 B2 JP 4576201B2
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- molybdenum
- source metal
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- 238000000034 method Methods 0.000 title claims description 28
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 title claims 12
- 239000000758 substrate Substances 0.000 claims description 87
- 238000000151 deposition Methods 0.000 claims description 51
- 239000004065 semiconductor Substances 0.000 claims description 48
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 37
- 230000008021 deposition Effects 0.000 claims description 37
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 36
- 229910052710 silicon Inorganic materials 0.000 claims description 36
- 239000010703 silicon Substances 0.000 claims description 36
- 229910052750 molybdenum Inorganic materials 0.000 claims description 33
- 239000011733 molybdenum Substances 0.000 claims description 33
- 239000001301 oxygen Substances 0.000 claims description 19
- 229910052760 oxygen Inorganic materials 0.000 claims description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 18
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 16
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 claims description 16
- 229910001882 dioxygen Inorganic materials 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 16
- 229910002601 GaN Inorganic materials 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 13
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000002019 doping agent Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 claims description 5
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 150000002894 organic compounds Chemical class 0.000 claims description 5
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- HZXMRANICFIONG-UHFFFAOYSA-N gallium phosphide Chemical compound [Ga]#P HZXMRANICFIONG-UHFFFAOYSA-N 0.000 claims description 3
- 229910005540 GaP Inorganic materials 0.000 claims description 2
- 238000010926 purge Methods 0.000 claims 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 52
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 52
- 239000010408 film Substances 0.000 description 32
- 239000000463 material Substances 0.000 description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- 230000003647 oxidation Effects 0.000 description 14
- 238000007254 oxidation reaction Methods 0.000 description 14
- 238000009826 distribution Methods 0.000 description 10
- 229910044991 metal oxide Inorganic materials 0.000 description 10
- 150000004706 metal oxides Chemical class 0.000 description 10
- 239000013078 crystal Substances 0.000 description 9
- 239000010453 quartz Substances 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 6
- 229910052814 silicon oxide Inorganic materials 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 229910052594 sapphire Inorganic materials 0.000 description 5
- 239000010980 sapphire Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 229910052733 gallium Inorganic materials 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- GPBUGPUPKAGMDK-UHFFFAOYSA-N azanylidynemolybdenum Chemical compound [Mo]#N GPBUGPUPKAGMDK-UHFFFAOYSA-N 0.000 description 1
- JJWKPURADFRFRB-UHFFFAOYSA-N carbonyl sulfide Chemical compound O=C=S JJWKPURADFRFRB-UHFFFAOYSA-N 0.000 description 1
- 238000001444 catalytic combustion detection Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 238000002065 inelastic X-ray scattering Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—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
- H01L21/20—Deposition of semiconductor materials on a substrate, e.g. epitaxial growth solid phase epitaxy
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/10—Oxidising
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- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/08—Oxides
- C23C14/083—Oxides of refractory metals or yttrium
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
- C30B25/02—Epitaxial-layer growth
- C30B25/18—Epitaxial-layer growth characterised by the substrate
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/16—Oxides
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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02367—Substrates
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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02565—Oxide semiconducting materials not being Group 12/16 materials, e.g. ternary compounds
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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/0257—Doping during depositing
- H01L21/02573—Conductivity type
- H01L21/02576—N-type
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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/0257—Doping during depositing
- H01L21/02573—Conductivity type
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- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/02631—Physical deposition at reduced pressure, e.g. MBE, sputtering, evaporation
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- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Chemical Vapour Deposition (AREA)
- Recrystallisation Techniques (AREA)
- Formation Of Insulating Films (AREA)
Description
近年、バイポーラトランジスタ、電界効果トランジスタ、サイリスタ等のいわゆるパワー・デバイスと呼ばれる電子デバイスは、家電製品、自動車、工作機械、照明等きわめて広い範囲で使われるようになっている。それとともに、パワー・デバイスには高効率かつ高速に電力の変換・制御ができる特性が要求されるようになってきた。パワー・デバイスは、永年に渡り、シリコン(Si)を用いて作製されてきたが、Siを用いることの限界が予測されるようになってきた。その限界はSiの禁制帯幅が約1電子ボルト(eV)と小さいことから生じることが明らかにされている。そこで、その限界を克服するために、禁制帯幅の広い、いわゆるワイドギャップ半導体を用いて、パワー・デバイスを実現する研究が広く行われるようになった。具体的には、約3.43eVの禁制帯幅をもつ窒化ガリウム(GaN)や約3.2eVの禁制帯幅をもつシリコン・カーバイド(SiC)等の半導体を用いたパワー・デバイスの開発である。
従来より、酸化モリブデンは、化学反応における触媒(例えば、特許文献1参照)、半導体集積回路における誘電体材料(例えば、特許文献2参照)、あるいは、電極保護材料(例えば、特許文献3)として用いられることが知られている。さらに、本願の発明者によって発見された酸化モリブデンの半導体物性を用いた半導体デバイスへの応用例がある(例えば、特許文献4参照)。また、酸化モリブデン薄膜の形成方法としては、MoF5、MoCl5、Mo(CO)などの原料ガスからのCVD法によるもの、あるいはスッパッタ法でモリブデン膜を形成後、酸素ガス雰囲気中でアニール処理する方法が知られている(例えば、特許文献5参照)。
従来の酸化モリブデンを用いた半導体デバイス(例えば、特許文献4参照)は、モリブデン金属板表面に酸化によって形成された酸化モリブデン層を半導体層として用いていた。しかしながら、モリブデン金属基板には従来の半導体デバイス作製技術(例えば、へき開など)が利用できず、チップへの加工に新たな技術を必要となるなどの問題点があった。さらに、モリブデン金属を基板として用いる必要があったので、現在、広く用いられているシリコン基板上に形成されたデバイスと集積化することができなかった。また、その製法は、バルク金属の表面の熱酸化に頼っていたため、膜厚および膜厚分布の精密な制御や、結晶性の制御が非常に困難であった。
なお、図3に示された酸化炉の温度分布は容易に実現できる簡便なものであるが、図4に示すようにターゲット基板設置領域の温度分布が平坦にできれば、より多くのターゲット基板を同一温度で設置できるため、より好ましい。
101 石英管
102 酸化炉
103 電熱線(加熱器)
104 ソース板ホルダ
105 ターゲット基板ホルダ
106,107 熱電対(温度計)
108 酸素ガス
501 シリコン
502 モリブデン酸化物
Claims (6)
- 基板およびソース金属モリブデン板を準備するステップと、
前記基板およびソース金属モリブデン板を洗浄するステップと、
前記基板およびソース金属モリブデン板を堆積装置に設置するステップと、
不活性ガス雰囲気下で、前記基板を350℃以上650℃未満の所定の温度に、前記ソース金属モリブデン板を500℃以上850℃未満の前記基板より高い所定の温度に、それぞれ加熱するステップと、
堆積装置内を酸素雰囲気に置換し、堆積装置内の状態を、所望の膜厚を形成するように、所定の時間維持することによって三酸化モリブデン層を前記基板上に直接形成するステップとを含む、半導体三酸化モリブデン層を作製する方法。 - 基板およびあらかじめ表面を酸化したソース金属モリブデン板を準備するステップと、
前記基板およびあらかじめ表面を酸化したソース金属モリブデン板を洗浄するステップと、
前記基板およびあらかじめ表面を酸化したソース金属モリブデン板を堆積装置内に設置するステップと、
不活性ガス雰囲気下で、前記基板を350℃以上650℃未満の所定の温度に、前記あらかじめ表面を酸化したソース金属モリブデン板を500℃以上850℃未満の前記基板より高い所定の温度に、それぞれ加熱するステップと、
堆積装置内を酸素雰囲気に置換し、堆積装置内の状態を、所望の膜厚を形成するように所定の時間維持することによって三酸化モリブデン層を前記基板上に直接形成するステップとを含む、半導体三酸化モリブデン層を作製する方法。 - 前記酸素雰囲気が、前記堆積装置内を、前記ソース金属モリブデン板から前記基板へ向けて流れる50−450SCCMの流量の酸素ガスフローによって実現されている請求項1又は2に記載の方法。
- 前記加熱するステップの後で、かつ前記形成するステップの前に、水素ガスを所定の時間フローするステップをさらに含む、請求項1又は2に記載の方法。
- 前記基板が、シリコン、ガリウム砒素、ガリウム燐、インヂウム燐、ガリウム窒化物、シリコン炭化物、有機化合物半導体、もしくはそれらの誘導体又はガラスである、請求項1又は2に記載の方法。
- 前記三酸化モリブデン層を形成するステップにおいて、p型あるいはn型ドーパントを同時に添加するステップを含む、請求項1又は2に記載の方法。
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JP2004310331A JP4576201B2 (ja) | 2004-10-26 | 2004-10-26 | 三酸化モリブデン層の作製方法 |
KR1020050100561A KR20060049322A (ko) | 2004-10-26 | 2005-10-25 | 기판상에 형성된 금속 산화물층과 그 제조 방법 |
TW094137315A TWI496195B (zh) | 2004-10-26 | 2005-10-25 | 形成於基材上之金屬氧化物層及其製造方法 |
CNA2005101161270A CN1779912A (zh) | 2004-10-26 | 2005-10-26 | 基片上形成的金属氧化物及其制造方法 |
EP05023406A EP1652957A3 (en) | 2004-10-26 | 2005-10-26 | Metal oxide layer formed on substrates and its fabrication methods |
US11/258,008 US7476628B2 (en) | 2004-10-26 | 2005-10-26 | Metal oxide layer formed on substrates and its fabrication methods |
DE05023406T DE05023406T1 (de) | 2004-10-26 | 2005-10-26 | Auf Substraten gebildete Metalloxidschicht und Verfahren zur Herstellung |
DE08014153T DE08014153T1 (de) | 2004-10-26 | 2005-10-26 | Auf Substraten geformte Metalloxidschicht und Herstellungsverfahren dafür |
EP08014153.4A EP1983070B1 (en) | 2004-10-26 | 2005-10-26 | Method to fabricate a molybdenum oxide layer for a semiconductor device |
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JP (1) | JP4576201B2 (ja) |
KR (1) | KR20060049322A (ja) |
CN (1) | CN1779912A (ja) |
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JP5214194B2 (ja) * | 2007-08-10 | 2013-06-19 | 住友化学株式会社 | 金属ドープモリブデン酸化物層を含む有機エレクトロルミネッセンス素子及び製造方法 |
US8435906B2 (en) * | 2009-01-28 | 2013-05-07 | Applied Materials, Inc. | Methods for forming conformal oxide layers on semiconductor devices |
JP6108858B2 (ja) * | 2012-02-17 | 2017-04-05 | 株式会社半導体エネルギー研究所 | p型半導体材料および半導体装置 |
JP5826094B2 (ja) * | 2012-03-30 | 2015-12-02 | 株式会社半導体エネルギー研究所 | p型半導体材料、および光電変換装置の作製方法 |
US8647943B2 (en) * | 2012-06-12 | 2014-02-11 | Intermolecular, Inc. | Enhanced non-noble electrode layers for DRAM capacitor cell |
US11087977B2 (en) * | 2016-08-31 | 2021-08-10 | Flosfia Inc | P-type oxide semiconductor and method for manufacturing same |
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JPS6287498A (ja) * | 1985-10-14 | 1987-04-21 | Alps Electric Co Ltd | 酸化モリブデンウイスカ−の製造方法 |
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US20060089006A1 (en) | 2006-04-27 |
EP1983070B1 (en) | 2014-08-13 |
DE08014153T1 (de) | 2009-05-20 |
US7476628B2 (en) | 2009-01-13 |
EP1652957A2 (en) | 2006-05-03 |
TWI496195B (zh) | 2015-08-11 |
CN1779912A (zh) | 2006-05-31 |
TW200629382A (en) | 2006-08-16 |
DE05023406T1 (de) | 2006-08-31 |
EP1652957A3 (en) | 2006-12-06 |
KR20060049322A (ko) | 2006-05-18 |
EP1983070A3 (en) | 2009-04-15 |
EP1983070A2 (en) | 2008-10-22 |
JP2006128154A (ja) | 2006-05-18 |
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