WO2022181686A1 - 半導体基板並びにその製造方法および製造装置、テンプレート基板 - Google Patents
半導体基板並びにその製造方法および製造装置、テンプレート基板 Download PDFInfo
- Publication number
- WO2022181686A1 WO2022181686A1 PCT/JP2022/007587 JP2022007587W WO2022181686A1 WO 2022181686 A1 WO2022181686 A1 WO 2022181686A1 JP 2022007587 W JP2022007587 W JP 2022007587W WO 2022181686 A1 WO2022181686 A1 WO 2022181686A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- semiconductor
- substrate
- seed
- mask
- semiconductor substrate
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 269
- 239000000758 substrate Substances 0.000 title claims abstract description 268
- 238000004519 manufacturing process Methods 0.000 title claims description 29
- 238000000034 method Methods 0.000 claims description 40
- 238000004544 sputter deposition Methods 0.000 claims description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 150000004767 nitrides Chemical class 0.000 claims description 8
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000005121 nitriding Methods 0.000 claims description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 6
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 6
- 238000000608 laser ablation Methods 0.000 claims description 5
- 125000004429 atom Chemical group 0.000 claims description 4
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 94
- 229910002601 GaN Inorganic materials 0.000 description 60
- 230000015572 biosynthetic process Effects 0.000 description 29
- 229910010271 silicon carbide Inorganic materials 0.000 description 26
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 23
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 22
- 229910052710 silicon Inorganic materials 0.000 description 22
- 239000010703 silicon Substances 0.000 description 22
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 20
- 239000002346 layers by function Substances 0.000 description 16
- 230000006870 function Effects 0.000 description 12
- 230000007547 defect Effects 0.000 description 11
- 239000013078 crystal Substances 0.000 description 10
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 8
- 238000000926 separation method Methods 0.000 description 7
- 229910002704 AlGaN Inorganic materials 0.000 description 6
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical group [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000003475 lamination Methods 0.000 description 6
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- RGGPNXQUMRMPRA-UHFFFAOYSA-N triethylgallium Chemical compound CC[Ga](CC)CC RGGPNXQUMRMPRA-UHFFFAOYSA-N 0.000 description 5
- XCZXGTMEAKBVPV-UHFFFAOYSA-N trimethylgallium Chemical compound C[Ga](C)C XCZXGTMEAKBVPV-UHFFFAOYSA-N 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000008186 active pharmaceutical agent Substances 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 229910052733 gallium Inorganic materials 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000005477 sputtering target Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 208000012868 Overgrowth Diseases 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- NWAIGJYBQQYSPW-UHFFFAOYSA-N azanylidyneindigane Chemical compound [In]#N NWAIGJYBQQYSPW-UHFFFAOYSA-N 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 238000001755 magnetron sputter deposition Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 238000001552 radio frequency sputter deposition Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910004205 SiNX Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- AUCDRFABNLOFRE-UHFFFAOYSA-N alumane;indium Chemical compound [AlH3].[In] AUCDRFABNLOFRE-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/0262—Reduction or decomposition of gaseous compounds, e.g. 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
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/02636—Selective deposition, e.g. simultaneous growth of mono- and non-monocrystalline semiconductor materials
- H01L21/02639—Preparation of substrate for selective deposition
-
- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/04—Coating on selected surface areas, e.g. using masks
- C23C14/042—Coating on selected surface areas, e.g. using masks using masks
-
- 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
- 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
- C23C14/0617—AIII BV compounds, where A is Al, Ga, In or Tl and B is N, P, As, Sb or Bi
-
- 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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
-
- 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
- C23C16/04—Coating on selected surface areas, e.g. using masks
- C23C16/042—Coating on selected surface areas, e.g. using masks using masks
-
- 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
- C23C16/34—Nitrides
-
- 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
- C30B25/04—Pattern deposit, e.g. by using masks
-
- 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
- C30B25/183—Epitaxial-layer growth characterised by the substrate being provided with a buffer layer, e.g. a lattice matching layer
-
- 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
- C30B25/186—Epitaxial-layer growth characterised by the substrate being specially pre-treated by, e.g. chemical or physical means
-
- 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
- C30B29/40—AIIIBV compounds wherein A is B, Al, Ga, In or Tl and B is N, P, As, Sb or Bi
- C30B29/403—AIII-nitrides
- C30B29/406—Gallium nitride
-
- 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
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02367—Substrates
- H01L21/0237—Materials
- H01L21/02373—Group 14 semiconducting materials
- H01L21/02381—Silicon, silicon germanium, germanium
-
- 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
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02367—Substrates
- H01L21/02433—Crystal orientation
-
- 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
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02436—Intermediate layers between substrates and deposited layers
- H01L21/02439—Materials
- H01L21/02441—Group 14 semiconducting materials
- H01L21/02447—Silicon carbide
-
- 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
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02436—Intermediate layers between substrates and deposited layers
- H01L21/02439—Materials
- H01L21/02455—Group 13/15 materials
- H01L21/02458—Nitrides
-
- 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
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02436—Intermediate layers between substrates and deposited layers
- H01L21/02494—Structure
- H01L21/02496—Layer structure
- H01L21/02505—Layer structure consisting of more than two layers
-
- 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
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02538—Group 13/15 materials
- H01L21/0254—Nitrides
-
- 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
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02609—Crystal orientation
-
- 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
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/02636—Selective deposition, e.g. simultaneous growth of mono- and non-monocrystalline semiconductor materials
- H01L21/02639—Preparation of substrate for selective deposition
- H01L21/02642—Mask materials other than SiO2 or SiN
-
- 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
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/02636—Selective deposition, e.g. simultaneous growth of mono- and non-monocrystalline semiconductor materials
- H01L21/02639—Preparation of substrate for selective deposition
- H01L21/02645—Seed materials
-
- 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
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/02636—Selective deposition, e.g. simultaneous growth of mono- and non-monocrystalline semiconductor materials
- H01L21/02647—Lateral overgrowth
-
- 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
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/20—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
- H01L29/2003—Nitride compounds
-
- 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
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02538—Group 13/15 materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/02—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
- H01L33/12—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a stress relaxation structure, e.g. buffer layer
Definitions
- the present invention relates to semiconductor substrates and the like.
- Patent Document 1 discloses a method of forming a mask pattern on a base substrate including a GaN layer (seed layer) and forming a semiconductor portion on the mask pattern using an ELO (Epitaxial Lateral Overgrowth) method. .
- a semiconductor substrate includes a support substrate, a mask pattern located above the support substrate and having a mask portion, and a mask pattern located above the support substrate so as to be locally located in plan view. and a semiconductor portion containing a GaN-based semiconductor disposed above the mask pattern so as to be in contact with the seed portion and the mask portion.
- FIG. 1A and 1B are a plan view and a cross-sectional view showing the configuration of a semiconductor substrate according to the present embodiment;
- FIG. It is a top view which shows another structure of the semiconductor substrate which concerns on this embodiment.
- It is a top view which shows another structure of the semiconductor substrate which concerns on this embodiment.
- FIG. 4 is a cross-sectional view showing another configuration of the semiconductor substrate according to the embodiment;
- FIG. 4 is a cross-sectional view showing another configuration of the semiconductor substrate according to the embodiment;
- FIG. 4 is a cross-sectional view showing another configuration of the semiconductor substrate according to the embodiment;
- It is a flow chart which shows an example of a manufacturing method of a semiconductor substrate concerning this embodiment.
- 1 is a block diagram showing an example of a semiconductor substrate manufacturing apparatus according to an embodiment;
- FIG. 1 is a cross-sectional view showing the configuration of a semiconductor substrate according to Example 1;
- FIG. 2 is a cross-sectional view showing the configuration of a template substrate according to Example 1;
- 2 is an enlarged view showing the configuration of a template substrate according to Example 1.
- FIG. FIG. 1 is a cross-sectional view showing the configuration of a semiconductor substrate according to Example 1;
- FIG. 2 is a cross-sectional view showing the configuration of a template substrate according to Example 1;
- 2 is an enlarged view showing the configuration of a template substrate according to Example 1.
- FIG. 10 is a cross-sectional view showing an application example of the template substrate; 4 is a flow chart showing a method for manufacturing a semiconductor substrate of Example 1.
- FIG. 4A to 4C are cross-sectional views showing a method for manufacturing a semiconductor substrate of Example 1; 4 is a flow chart showing a method for manufacturing a semiconductor substrate of Example 1.
- FIG. 4A to 4C are cross-sectional views showing a method for manufacturing a semiconductor substrate of Example 1;
- FIG. 4 is a cross-sectional view showing an example of lateral growth of a semiconductor portion;
- FIG. 10 is a cross-sectional view showing a step of isolating element portions in Example 1; 4 is a cross-sectional view showing another configuration of the semiconductor substrate of Example 1.
- FIG. 4A to 4C are cross-sectional views showing a method for manufacturing a semiconductor substrate of Example 1; 4 is a flow chart showing a method for manufacturing a semiconductor substrate of Example 1.
- FIG. 4A to 4C are cross-sectional views showing
- FIG. 4 is a cross-sectional view showing another configuration of the semiconductor substrate of Example 1.
- FIG. 4 is a cross-sectional view showing another configuration of the semiconductor substrate of Example 1.
- FIG. 10 is a cross-sectional view showing a step of isolating element portions in Example 1; 4 is a cross-sectional view showing another configuration of the semiconductor substrate of Example 1.
- FIG. 4 is a cross-sectional view showing another configuration of the semiconductor substrate of Example 1.
- FIG. 4 is a cross-sectional view showing another configuration of the semiconductor substrate of Example 1.
- FIG. 10 is a cross-sectional view showing the configuration of a semiconductor substrate of Example 2;
- FIG. 10 is a cross-sectional view showing another configuration of the semiconductor substrate of Example 2;
- FIG. 10 is a cross-sectional view showing another configuration of the semiconductor substrate of Example 2; FIG.
- FIG. 11 is a cross-sectional view showing the configuration of a semiconductor substrate of Example 3;
- FIG. 11 is a cross-sectional view showing the configuration of a semiconductor substrate of Example 4;
- FIG. 12 is a cross-sectional view showing another configuration of the semiconductor substrate of Example 4;
- FIG. 11 is a schematic cross-sectional view showing the configuration of Example 6;
- FIG. 12 is a cross-sectional view showing an example of application of the sixth embodiment to an electronic device;
- FIG. 11 is a schematic cross-sectional view showing the configuration of Example 7;
- the semiconductor substrate 10 (semiconductor wafer) according to the present embodiment includes a support substrate 1 (main substrate 1) and a mask pattern 6 positioned above the support substrate 1 and having a mask portion 5. , a seed portion 3 disposed locally above the support substrate 1 in plan view, and a seed portion 3 disposed above the mask pattern 6 so as to be in contact with the seed portion 3 and the mask portion 5; and a semiconductor portion 8 containing a GaN-based semiconductor.
- “Locally located” means “not located entirely above the support substrate 1," and can also be rephrased as “partially located” or “non-entirely located.” can.
- a buffer portion 2p is provided locally between the supporting substrate 1 and the seed portion 3 in plan view.
- the mask pattern 6 may be a layered mask layer 6 .
- the seed portion 3 may be included in the seed pattern SP, and the semiconductor portion 8 may be included in the semiconductor pattern 8P.
- the mask pattern 6 has an opening K, and the seed portion 3 and the buffer portion 2p are locally arranged so as to overlap the opening K in plan view.
- the opening K may be included in the opening pattern KP of the mask pattern 6 .
- the opening K has a longitudinal shape with the width direction in the first direction (X direction) and the longitudinal direction in the second direction (Y direction), and the seed portion 3 and the buffer portion 2p have a longitudinal shape.
- the semiconductor portion 8 has an edge 8E located between the mask portion center 5c and the seed portion 3 in plan view.
- the opening K may have a tapered shape (a shape that narrows downward).
- the openings K may be divided periodically in the longitudinal direction (Y direction).
- the opening K may be polygonal such as a square.
- a semiconductor substrate means a substrate including a semiconductor portion, and the support substrate 1 may be a semiconductor or may be a non-semiconductor.
- the support substrate 1, the buffer portion 2p, the seed portion 3 and the mask pattern 6 are sometimes referred to as a template substrate 7.
- the semiconductor section 8 includes, for example, a nitride semiconductor (for example, a GaN-based semiconductor).
- a GaN-based semiconductor is a semiconductor containing gallium atoms (Ga) and nitrogen atoms (N), and examples thereof include GaN, AlGaN, AlGaInN, and InGaN.
- the semiconductor section 8 may be of a doped type (for example, n-type including donors) or non-doped type.
- the semiconductor portion 8 containing a GaN-based semiconductor can be formed by an ELO (Epitaxial Lateral Overgrowth) method.
- ELO Epilateral Lateral Overgrowth
- a heterogeneous substrate having a lattice constant different from that of a GaN-based semiconductor is used as the support substrate 1
- a seed portion 3 containing a GaN-based semiconductor is used
- an inorganic compound film is used as the mask pattern 6
- GaN is deposited on the mask portion 5 .
- the semiconductor part 8 of the system can be grown laterally.
- the thickness direction (Z direction) of the semiconductor portion 8 is the ⁇ 0001> direction (c-axis direction) of the GaN-based crystal
- the width direction (X-direction) of the longitudinal opening K is the ⁇ 11- 20> direction (a-axis direction) and the longitudinal direction (Y-direction) of the opening K can be the ⁇ 1-100> direction (m-axis direction) of the GaN-based crystal.
- a layer (including the semiconductor section 8) formed by the ELO method is sometimes called an ELO semiconductor section.
- the ELO semiconductor portion 8 overlaps the mask portion 5 in plan view and overlaps the low defect portion (dislocation non-inheriting portion) EK with relatively few threading dislocations and the opening K in plan view and has relatively many threading dislocations. and a dislocation inheritance portion NS.
- an active layer for example, a layer in which electrons and holes combine
- the active layer can be provided so as to overlap the low defect section EK in plan view.
- the low-defect portion EK can be configured such that the non-threading dislocation density in the cross section parallel to the ⁇ 0001> direction is higher than the threading dislocation density in the upper surface.
- Threading dislocations are dislocations (defects) that extend from the lower surface or inside of the semiconductor portion 8 to the surface or surface layer along the thickness direction (Z direction) of the semiconductor portion 8 . Threading dislocations can be observed by performing CL (Cathode Luminescence) measurement on the surface (parallel to the c-plane) of the semiconductor portion 8 .
- Non-threading dislocations are dislocations that are CL-measured in a cross section along a plane parallel to the thickness direction, and are mainly basal plane (c-plane) dislocations.
- FIG. 4 is a cross-sectional view showing another configuration of the semiconductor substrate according to this embodiment.
- the semiconductor substrate 10 has a support substrate 1, a laminated portion 4 (buffer portion and seed portion), a mask pattern 6, a semiconductor portion 8, and a functional layer 9 above the semiconductor portion 8.
- the functional layer 9 may be, for example, a compound semiconductor section containing a nitride semiconductor, and may be a single layer or multiple layers.
- the functional layer 9 has a function as a component of a semiconductor device, a protection function from external forces, a protection function from static electricity, a protection function to prevent foreign substances such as water and oxygen from entering, a protection function from etchants and the like, an optical function, and It may have at least one sensing function.
- FIG. 5 is a cross-sectional view showing another configuration of the semiconductor substrate according to this embodiment.
- the semiconductor portion 8 has an edge 8E located on the mask portion 5, but is not limited to this.
- the semiconductor portion 8 may have no edge on the mask portion 5 (joint type) by joining the semiconductor films laterally grown in opposite directions from the adjacent openings K.
- FIG. 6 is a cross-sectional view showing another configuration of the semiconductor substrate according to this embodiment. As shown in FIG. 6, a functional layer 9 may be provided on the upper layer of the association type semiconductor portion 8 .
- FIG. 7 is a flow chart showing an example of a method for manufacturing a semiconductor substrate according to this embodiment.
- the step of preparing the template substrate 7 the step of forming the semiconductor portion 8 on the template substrate 7 using the ELO method is performed.
- the step of forming the semiconductor portion 8 the step of forming the functional layer 9 can be performed as necessary.
- FIG. 8 is a block diagram showing an example of a semiconductor substrate manufacturing apparatus according to this embodiment.
- a semiconductor substrate manufacturing apparatus 70 of FIG. 8 includes a semiconductor forming section 72 that forms a semiconductor section 8 on a template substrate 7 and a control section 74 that controls the semiconductor forming section 72 .
- the semiconductor formation part 72 forms the semiconductor part 8 (see FIG. 1) containing a GaN-based semiconductor by the ELO method so as to be in contact with the local seed part 3 and the mask part 5 .
- the configuration may be such that the semiconductor substrate manufacturing apparatus 70 forms the functional layer 9 .
- the semiconductor part forming part 72 may include an MOCVD apparatus, and the control part 74 may include a processor and memory.
- the control section 74 may be configured to control the semiconductor section forming section 72 by executing a program stored, for example, in an internal memory, a communicable communication device, or an accessible network. A storage medium or the like in which the data is stored is also included in this embodiment.
- FIG. 9 is a flow chart showing an example of a method for manufacturing a semiconductor device according to this embodiment.
- FIG. 10 is a plan view showing an example of separation of element portions.
- FIG. 11 is a cross-sectional view showing an example of separation and spacing of element portions.
- the step of preparing the semiconductor substrate 10 the step of forming the functional layer 9 on the semiconductor portion 8 is performed as necessary.
- a plurality of trenches TR are formed in the semiconductor substrate 10 to isolate the element portion DS (including the low defect portion EK of the semiconductor portion 8 and the functional layer 9). carry out the process.
- Trench TR penetrates functional layer 9 and semiconductor portion 8 .
- Mask portion 5 and support substrate 1 may be exposed in trench TR.
- the opening width of trench TR can be equal to or greater than the width of opening K.
- FIG. 11 the element portion DS is van der Waals coupled with the mask portion 5 and is a part of the semiconductor substrate 10 .
- the element portion DS is separated from the template substrate 7, and a step of forming a semiconductor device 20 is performed.
- the step of preparing the semiconductor substrate 10 shown in FIG. 9 may include each step of the semiconductor substrate manufacturing method shown in FIG.
- the semiconductor device 20 As shown in FIG. 11, by separating the element part DS from the template substrate 7, the semiconductor device 20 (including the semiconductor part 8) can be formed.
- the semiconductor device 20 include light emitting diodes (LEDs), semiconductor lasers, Schottky diodes, photodiodes, transistors (including power transistors and high electron mobility transistors), and the like.
- FIG. 12 is a schematic diagram showing the configuration of the electronic device according to this embodiment.
- the electronic device 30 of FIG. 12 includes a semiconductor substrate 10 (a configuration that functions as a semiconductor device while including the template substrate 7, for example, when the template substrate 7 is translucent), and a drive substrate on which the semiconductor substrate 10 is mounted. 23 and a control circuit 25 that controls the drive board 23 .
- FIG. 13 is a schematic diagram showing another configuration of the electronic device according to this embodiment.
- An electronic device 30 of FIG. 13 includes a semiconductor device 20 including at least a low-defect portion EK, a drive board 23 on which the semiconductor device 20 is mounted, and a control circuit 25 that controls the drive board 23 .
- Examples of the electronic device 30 include a display device, a laser emitting device (including a Fabry-Perot type and a surface emitting type), a lighting device, a communication device, an information processing device, a sensing device, a power control device, and the like.
- FIG. 14 is a cross-sectional view showing the configuration of the semiconductor substrate according to Example 1.
- FIG. 15A is a cross-sectional view showing a configuration of a template substrate according to Example 1.
- FIG. 15B is an enlarged view showing the configuration of the template substrate according to Example 1.
- the semiconductor substrate 10 according to Example 1 includes a template substrate 7, and a semiconductor portion 8 containing a GaN-based semiconductor disposed so as to be in contact with the seed portion 3 and the mask portion 5 of the template substrate 7.
- the laminated portion 4 is locally arranged so as to be aligned with the opening K in plan view.
- Laminated portion 4 includes buffer portion 2 p in contact with support substrate 1 and seed portion 3 in contact with semiconductor portion 8 . Since the laminated portion 4 is locally provided on the support substrate 1 , the support substrate 1 is in contact with the mask portion 5 .
- FIG. 16 is a cross-sectional view showing an application example of the template substrate.
- LED light emitting diode
- FIG. 16 shows an application example of the template substrate.
- the mask portion 5 is formed by a sputtering method, a plasma CVD method, or the like.
- the flatness of the surface of the mask portion can be further improved, light scattering when used as an LED can be suppressed, and the degree of adhesion between the (ELO) semiconductor portion 8 and the mask portion 5 can be reduced.
- the semiconductor portion 8 can be easily peeled off.
- the opening K of the mask pattern 6 and the laminated portion 4 have a longitudinal shape with the X direction as the width direction and the Y direction as the longitudinal direction.
- the support substrate 1 has an upwardly opening recess 1B, the opening K overlaps the recess 1B in plan view, and the lamination portion 4 (buffer portion 2p and seed portion 3) overlaps the recess 1B and the opening in plan view. Overlaps with K. This enhances the function of the buffer portion 2p (for example, AlN film) as a meltback etching protection film. The more steps are formed in the AlN film, the easier it is for microcracks to occur in the AlN film due to stress concentration. This is because the possibility of melting) increases.
- the concave portion 1B has the Y direction as its longitudinal direction (see FIG. 1).
- the opening K and recess 1B are aligned with each other to form a communication hole RK. Since the laminated portion 4 is formed inside the communication hole RK, the laminated portion 4 (buffer portion 2p and seed portion 3) may be concave.
- the seed portion 3 containing a GaN-based semiconductor used in the ELO method exerts a tensile stress on the silicon substrate at room temperature. warpage can be reduced. In addition, since cracks are less likely to occur than when a buffer such as an AlN film is formed on the entire surface, the buffer portion 2p can be made thicker and the meltback etching resistance can be enhanced.
- a template substrate 7 including a support substrate 1 and a mask pattern 6 has a seed portion 3 disposed locally above the support substrate 1 in plan view.
- a distance Ds between the upper surface of the support substrate 1 and the upper surface of the mask portion 5 is less than or equal to Dm.
- a heterosubstrate having a lattice constant different from that of the GaN-based semiconductor can be used as the support substrate 1 (main substrate).
- hetero-substrates include single-crystal silicon (Si) substrates, sapphire (Al 2 O 3 ) substrates, silicon carbide (SiC) substrates, and the like.
- the plane orientation of the support substrate 1 is, for example, the (111) plane of a silicon substrate, the (0001) plane of a sapphire substrate, and the 6H—SiC (0001) plane of a SiC substrate. These are just examples, and any supporting substrate and any plane orientation may be used as long as the semiconductor portion 8 can be grown by the ELO method.
- a buffer portion 2p and a seed portion 3 can be provided in order from the support substrate 1 side.
- the seed portion 3 is a growth starting point of the semiconductor portion 8 and is joined to the semiconductor portion 8 .
- a GaN-based semiconductor, aluminum nitride (AlN), silicon carbide (SiC), graphene, or the like can be used for the seed portion 3 .
- the silicon carbide used for the seed portion 3 is desirably hexagonal system 6H--SiC or 4H--SiC.
- the seed portion 3 can be formed by a sputtering method, a PSD (Pulse sputter deposition) method, or a laser ablation method.
- the buffer portion 2p has the function of reducing the contact between the support substrate 1 and the seed portion 3 and the melting thereof. For example, when a silicon substrate is used as the support substrate 1 and a GaN-based semiconductor is used as the seed portion 3, the silicon substrate and the GaN-based semiconductor melt together. reduced. Buffer portion 2 p may have at least one of the effect of increasing the crystallinity of seed portion 3 and the effect of relieving internal stress of seed portion 3 .
- a GaN-based semiconductor containing Al, aluminum nitride (AlN), and silicon carbide (SiC) can be used for the buffer section 2p.
- the silicon carbide used for the buffer portion 2p may be of a hexagonal system (6H--SiC, 4H--SiC) or a cubic system (3C--SiC).
- the buffer portion 2p may include a strain relaxation layer.
- the strain relaxation layer has, for example, an AlGaN superlattice structure or a graded structure in which the Al composition of AlGaN is changed stepwise. The stress in the longitudinal direction of the semiconductor section 8 can be relaxed by the strain relaxation layer.
- a silicon substrate is used as the support substrate 1
- AlN is used as the buffer portion 2p (formed to a thickness of about 10 nm to about 5 ⁇ m using, for example, an MOCVD apparatus)
- a GaN-based semiconductor is used as the seed portion 3.
- a laminated film is used and a GaN-based semiconductor is used for the seed portion 3 .
- the support substrate 1 that does not melt with the GaN-based semiconductor of the seed portion 3 is used, a configuration without the buffer portion is also possible. That is, if the seed portion 3 and the support substrate 1 do not melt together, the buffer portion is not necessarily required, and a configuration in which the seed portion 3 is locally provided on the support substrate 1 is possible (described later).
- a silicon substrate is used as the support substrate 1 and aluminum nitride is used as the local seed portion 3
- a silicon substrate is used as the support substrate 1 and hexagonal silicon carbide is used as the local seed portion 3.
- a form etc. can be mentioned.
- Mask pattern 6 includes mask portion 5 and opening K. As shown in FIG.
- the opening K has the function of a growth start hole that exposes the seed portion 3 and starts the growth of the semiconductor portion 8, and the mask portion 5 is a selective growth mask pattern for laterally growing the semiconductor portion 8. may have the function of
- the opening K of the mask pattern is a portion (non-formation portion) where the mask portion 5 is not formed, and may or may not be surrounded by the mask portion 5 .
- the opening K is included in the opening pattern of the mask pattern.
- the mask pattern 6 for example, a silicon oxide film (SiOx), a titanium nitride film (TiN, etc.), a silicon nitride film (SiNx), a silicon oxynitride film (SiON), and a metal film having a high melting point (for example, 1000° C. or higher) are used.
- a single layer film containing any one of or a laminated film containing at least two of these can be used.
- the mask pattern 6 can be formed by thermally oxidizing the support substrate 1, which is a silicon substrate, or by nitriding the support substrate 1, which is a silicon substrate.
- a laminated film in which a silicon oxide film and a silicon nitride film are formed in this order can be used as the mask pattern 6 .
- the semiconductor portion 8 and the mask pattern 6 may react and adhere to each other. Therefore, the upper layer film in direct contact with the semiconductor portion 8 is preferably a silicon nitride film.
- the film on the support substrate 1 may be removed. is also effective in improving the yield of the process.
- FIG. 17A is a flow chart showing a method for manufacturing a semiconductor substrate of Example 1.
- FIG. 17B is a cross-sectional view showing the method for manufacturing the semiconductor substrate of Example 1.
- the method of manufacturing a semiconductor substrate according to the first embodiment includes the steps of preparing a support substrate 1, forming a mask pattern 6 including an opening pattern KP above or within the support substrate 1, and forming a mask pattern 6 including an opening pattern KP. 6, a step of forming a seed pattern SP having a smaller seed area than the mask area of the mask pattern 6; and a step of laterally growing on the mask portion 5 of the mask pattern 6 from above the seed pattern SP overlapping the opening pattern KP.
- the opening pattern KP, seed pattern SP, and semiconductor pattern 8P may be striped.
- the seed area of the seed pattern SP may be greater than or equal to the opening area of the opening pattern KP.
- the seed pattern SP may be formed at a lower temperature than the semiconductor pattern 8P.
- FIG. 18A is a flow chart showing a method for manufacturing a semiconductor substrate of Example 1.
- FIG. 18B is a cross-sectional view showing the method for manufacturing the semiconductor substrate of Example 1.
- the method of manufacturing a semiconductor substrate according to the first embodiment includes a step of preparing a support substrate 1 which is a single crystal silicon substrate, and substrate processing in which the support substrate 1 is thermally oxidized or nitrided and used as a mask portion 5 of a mask pattern 6.
- a process of forming a film (a thermally oxidized film or a nitriding film), a process of patterning the resist RZ by photolithography, a process of forming an opening K in the mask pattern 6, and an etchant such as hydrofluoric acid from the opening K.
- the laminate 4x (aluminum nitride layer and gallium nitride layer) including the seed layer is formed at a low temperature (500° or less) using a sputtering method or the like. removing the resist RZ (by lifting off the seed portion 3 only in the opening K to form the seed pattern SP); A step of depositing (ELO) the semiconductor pattern 8P is performed.
- the resist When the laminate 4x is formed while leaving the resist RZ, the resist will be burned if the film is formed at a high temperature exceeding 200°C. .
- a sputtering target containing gallium nitride as a main component containing 25 atm% or more of gallium
- having an oxygen content of 5 atm% or less is used to perform sputtering at a sputtering gas pressure of less than 0.3 Pa during film formation.
- DC sputtering, RF sputtering, AC sputtering, DC magnetron sputtering, ECR (Electron cyclotron Resonance) sputtering, RF magnetron sputtering method, PSD (Pulse sputter deposition) method, Laser ablation method, etc. can be appropriately selected. can.
- the sputtering target used has an oxygen content of 5 atm% or less, preferably 3 atm% or less, more preferably 1 atm% or less, in order to increase the crystallinity of the entire film.
- the purity is also desirably as high as possible, and the content of metal impurities is 0.5. Less than 1% is preferred, and less than 0.01% is more preferred.
- using a gallium nitride target with a low oxygen content has advantages such as surface flatness, improved crystallinity of the GaN layer, and suppression of surface hillocks (projections).
- the degree of vacuum in the film forming apparatus before film formation is preferably 3 ⁇ 10 ⁇ 5 Pa or less, more preferably 1 ⁇ 10 ⁇ 5 Pa or less. Furthermore, it is preferable to pretreat the substrate before film formation. By carrying out the pretreatment, the organic layer and irregularities on the substrate surface are removed to enable epitaxial growth. Pretreatment methods include reverse sputtering treatment, acid treatment, UV treatment, and the like, but from the viewpoint of preventing reattachment of impurities after treatment, reverse sputtering treatment is preferred. Reverse sputtering is a method of cleaning the surface by colliding plasma atoms not on the sputtering target side but on the substrate side. The substrate temperature during film formation may be room temperature, but the substrate may be heated (for example, 400° C. to 1000° C.), thereby further improving the film quality.
- the power density during discharge is preferably 5 W/cm 2 or less, more preferably 1.5 W/cm 2 or less.
- the lower limit is preferably 0.1 W/cm 2 , more preferably 0.3 W/cm 2 .
- the power density is calculated by dividing the power applied during discharge by the area of the sputtering target. If the power density is too high, the raw material may be sputtered from the target in a clustered state, and the power density can be set as appropriate.
- an RF sputtering method is used and a gallium nitride target is used.
- the oxygen content of the gallium nitride target was 0.4 atom %.
- the film formation pressure was 0.1 Pa, and nitrogen gas was introduced at 20 to 40 sccm.
- argon gas was not supplied, but argon gas may be introduced to form the film.
- the discharge density was 125 W/cm 2 and the deposition temperature was room temperature.
- the film when the film is formed by the sputtering method, the laser ablation method, or the like described above, it often has internal stress compared to the seed portion formed by the MOCVD apparatus. Depending on film conditions, problems such as cracks are likely to occur. Therefore, it is desirable that the laminated portion 4 including the seed portion 3 is locally formed on the supporting substrate (wafer).
- a gallium nitride film formed by sputtering contains more oxygen than a film formed by MOCVD.
- the concentration of oxygen contained in the gallium nitride film, which is the seed portion may be 1 ⁇ 10 19 /cm 3 or more, and in such a case, internal stress may increase (cause cracking).
- a seed portion which contains a large amount of oxygen
- the buffer (buffer portion, buffer layer) of AlN, GaN-based semiconductor, SiC, or the like may be formed by a sputtering method, a PSD (Pulse sputter deposition) method, or a laser ablation method.
- the plurality of openings K are arranged periodically in the a-axis direction (X direction) of the semiconductor portion 8 .
- the width of the opening K is about 0.1 ⁇ m to 20 ⁇ m. As the width of each opening decreases, the number of threading dislocations propagating from each opening to the semiconductor portion 8 decreases. In addition, it becomes easy to separate (separate) the semiconductor section 8 from the template substrate 7 in a post-process. Furthermore, the area of the low defect portion EK with few surface defects can be increased.
- a silicon oxide film obtained by thermally oxidizing the supporting substrate or a silicon nitride film obtained by nitriding the supporting substrate has a high film quality and is difficult to decompose and evaporate at a high temperature. be. Further, since the substrate processing film such as the thermal oxide film has a compressive stress with respect to the supporting substrate 1, it also has an effect of alleviating the tensile stress of the semiconductor portion 8.
- FIG. The thermally oxidized film and the nitriding film are composed of one or more kinds of atoms (for example, Si) contained in the support substrate 1 and oxygen atoms or nitrogen atoms.
- the mask pattern 6 can also be formed by a general plasma-enhanced chemical vapor deposition (CVD) method.
- Example 1 (Film formation of semiconductor part)
- the semiconductor portion 8 was a GaN layer, and ELO film formation was performed on the aforementioned template substrate 7 using the MOCVD apparatus included in the semiconductor formation portion 72 of FIG.
- substrate temperature 1120° C.
- growth pressure 50 kPa
- TMG trimethylgallium
- NH 3 15 slm
- V/III 6000 supply ratio
- the semiconductor portion 8 is selectively grown on the seed portion 3 (GaN layer) of the laminated portion 4 and then laterally grown on the mask portion 5 . Then, the lateral growth of these semiconductor portions was stopped before the semiconductor portions laterally growing from both sides of the mask portion 5 were brought together.
- the width Wm of the mask portion 5 was 50 ⁇ m, the width of the opening K was 5 ⁇ m, the lateral width of the semiconductor portion 8 was 53 ⁇ m, the width (size in the X direction) of the low defect portion EK was 24 ⁇ m, and the layer thickness of the semiconductor portion 8 was 5 ⁇ m. rice field.
- the method for increasing the film formation rate in the lateral direction is as follows. First, a vertical growth layer growing in the Z direction (c-axis direction) is formed on the laminated portion 4, and then a lateral growth layer growing in the X direction (a-axis direction) is formed. At this time, by setting the thickness of the vertical growth layer to 10 ⁇ m or less, 5 ⁇ m or less, 3 ⁇ m or less, or 1 ⁇ m or less, the thickness of the horizontal growth layer can be kept low and the horizontal film formation rate can be increased.
- FIG. 19 is a cross-sectional view showing an example of lateral growth of a semiconductor portion.
- an initial growth layer (longitudinal growth layer) SL on the laminated portion 4, and then laterally grow the semiconductor portion 8 from the initial growth layer SL.
- the initial growth layer SL serves as a starting point for lateral growth of the semiconductor portion 8 .
- By appropriately controlling the ELO film forming conditions it is possible to control the growth of the semiconductor portion 8 in the Z direction (c-axis direction) or in the X direction (a-axis direction).
- the initial growth is performed immediately before the edge of the initial growth layer SL climbs over the upper surface of the mask portion 5 (at the stage where it is in contact with the upper end of the side surface of the mask portion 5) or immediately after it climbs over the upper surface of the mask portion 5.
- a method of stopping the film formation of the layer SL that is, switching the ELO film formation conditions from the c-axis direction film formation conditions to the a-axis direction film formation conditions at this timing) can be used.
- the initial growth layer SL can be formed with a thickness of, for example, 50 nm to 5.0 ⁇ m (eg, 80 nm to 2 ⁇ m).
- the thickness of the mask portion 5 and the thickness of the initial growth layer SL may be 500 nm or less.
- the initial growth layer SL (a part of the dislocation inheriting portion NS) is formed and then laterally grown to increase non-threading dislocations inside the low defect portion EK ( It is possible to reduce the threading dislocation density on the surface of the low defect portion EK. In addition, it is possible to control the distribution of impurity concentration (for example, silicon, oxygen) inside the low-defect portion EK. If the method of FIG.
- the ratio of the width (WL) of the semiconductor portion 8 to the opening width is 3.5 or more, 5.0 or more, 6.0 or more, 8.0 or more, 10 or more, 15 or more. , 20 or more, 30 or more, or 50 or more, and the ratio of the low defect portion EK is increased.
- the semiconductor portion 8 shown in FIG. 19 can be a nitride semiconductor crystal (eg, GaN crystal, AlGaN crystal, InGaN crystal, or InAlGaN crystal).
- a temperature of 1150°C or less is preferable to a temperature exceeding 1200°C. It is possible to form the semiconductor portion 8 even at a low temperature of less than 1000° C., which is preferable from the viewpoint of reducing the mutual reaction.
- TMG trimethylgallium
- the raw material is not sufficiently decomposed, and gallium atoms and carbon atoms are simultaneously incorporated into the semiconductor portion 8 in a larger amount than usual.
- ELO film formation in the a-axis direction is fast and film formation in the c-axis direction is slow.
- the carbon taken into the semiconductor portion 8 reduces the reaction with the mask portion 5 and reduces the adhesion between the mask portion 5 and the semiconductor portion 8 . Therefore, in the low-temperature film formation of the semiconductor part 8, the supply amount of ammonia is reduced and the film is formed at a low V/III ( ⁇ 1000), so that the raw material or the carbon element in the chamber atmosphere is taken into the semiconductor part 8 and the mask is removed. Reaction with the part 5 can be reduced.
- the semiconductor portion 8 is configured to contain carbon.
- TEG triethylgallium
- Example 1 is cross-sectional views showing a step of isolating the element portions in the first embodiment.
- Example 1 as shown in FIG. 20, the semiconductor substrate 10 is immersed in an etchant ET to dissolve the mask pattern 6, and then an adhesive tape TP (for example, an adhesive used when dicing a semiconductor wafer) is applied to the surface of the semiconductor portion 8.
- An adhesive tape TP for example, an adhesive used when dicing a semiconductor wafer
- a Peltier device may be used to lower the temperature of the semiconductor substrate 10 with the adhesive tape attached.
- the adhesive tape which generally has a larger coefficient of thermal expansion than the semiconductor, shrinks greatly, and stress is applied to the semiconductor portion 8 .
- the stress from the adhesive tape is applied to the bonded portion to the laminated portion 4 (of the template substrate 7). can be effectively applied to mechanically cleave or break the bond. That is, it is not necessary to etch away the joint.
- the mask portion 5 can have a laminated structure.
- the mask portion 5 may include a silicon oxide film 5 a located on the support substrate side (lower layer side) and a silicon nitride film 5 b located on the upper layer side and in contact with the semiconductor portion 8 .
- the seed portion 3 may be provided so as to overlap the recess 1B of the support substrate 1 and be in contact with the support substrate 1 in plan view.
- a silicon substrate is used as the support substrate 1 and aluminum nitride is used as the local seed portion 3
- a silicon substrate is used as the support substrate 1 and hexagonal silicon carbide is used as the local seed portion 3.
- the buffer layer 2f is formed over the entire upper surface of the support substrate 1 (including the concave portion 1B), and the seed portion 3 overlaps the concave portion 1B in plan view on the buffer layer 2f. It may be configured to be locally arranged as follows. In this case, AlN or SiC can be used as the buffer layer 2 f and GaN can be used as the seed portion 3 .
- the buffer layer 2f is formed over the entire upper surface of the support substrate 1 (including the concave portion 1B), and the stacked portion 4 including the buffer portion 2p and the seed portion 3 is formed on the buffer layer 2f. may be locally arranged so as to overlap with the concave portion 1B in plan view.
- SiC can be used as the buffer layer 2f
- a strain relaxation layer can be provided in the buffer portion 2p
- GaN can be used as the seed portion 3.
- FIG. 25 to 27 are cross-sectional views showing still another configuration of the semiconductor substrate of Example 1.
- FIG. 14 the concave portion 1B is formed on the surface of the support substrate 1, and the lamination portion 4 is formed in the concave portion 1B, but it is not limited to this.
- the lamination portion 4 ((the buffer portion 2p and the seed portion 3) is provided in the opening K without forming the concave portion 1B on the surface of the supporting substrate 1 (the surface of the supporting substrate 1 is assumed to be a flat surface).
- the recessed portion 1B may not be formed on the surface of the support substrate 1, and the laminated portion 4 may be provided such that a portion thereof protrudes upward from the opening portion K.
- the buffer layer 2f may be formed over the entire upper surface of the support substrate 1 (the entire surface of the wafer), and the seed portion 3 may be locally arranged on the buffer layer 2f.
- the stress can be relieved.
- the buffer layer 2f is formed on the entire surface, it is possible to suppress deterioration of the mask portion 5 due to reaction between the mask portion 5 and the support substrate 1 during film formation due to the MOCVD film forming temperature.
- a silicon substrate is used as the support substrate 1, AlN is used as the buffer layer 2f, and a GaN-based semiconductor is used as the seed portion 3.
- a silicon substrate is used as the support substrate 1, and silicon carbide is used as the buffer layer 2f.
- a form in which aluminum nitride is used for the seed part 3 a form in which a silicon substrate is used as the support substrate 1, a laminated film of silicon carbide and aluminum nitride is used as the buffer layer 2f, and a GaN-based semiconductor is used in the seed part 3, and the like. be able to.
- Example 2 28 and 29 are cross-sectional views showing the configuration of the semiconductor substrate of Example 2.
- the mask portion 5 may be a thermally oxidized film or a nitriding film of the support substrate, and the seed portion 3 or lamination portion 4 may be provided on the mask portion 5 . That is, the mask pattern 6 does not have an opening overlapping the semiconductor section 8 in plan view. By doing so, the step of patterning the mask pattern 6 can be omitted. In this case, as shown in FIG.
- a seed portion 3 (for example, a GaN-based semiconductor) may be provided on the mask pattern 6, or, as shown in FIG. You may provide the seed part 3 (GaN-type semiconductor etc.) through.
- a direct bonding method can be applied in which the bonding surfaces are activated by Ar plasma or the like in a vacuum and pressure-bonded.
- FIG. 30 is a cross-sectional view showing the configuration of Example 3.
- a silicon substrate is used as the support substrate 1
- SiC is used as the local buffer portion 2p
- AlN is used as the seed portion 3.
- SiC can have 3C, 4H, and 6H crystal structures. It is preferable to use SiC, which is more stable at a higher temperature than AlN, for the buffer portion 2p because it can suppress meltback etching (melting between the support substrate 1 and the semiconductor portion 8) more than AlN.
- Example 4 31 and 32 are sectional views showing the configuration of the fourth embodiment.
- a silicon substrate is used as the support substrate 1
- SiC is used as the buffer layer 2f
- AlN is used as the local seed portion 3.
- SiC can have 3C, 4H, and 6H crystal structures.
- Buffer layer 2 f is formed substantially over the entire upper surface of support substrate 1 . Since the buffer layer 2f is formed on the entire surface, the reaction between the mask portion 5 and the support substrate 1 can be suppressed. Even when the mask portion 5 is set to be thin, if the buffer layer 2f is on the entire surface, the supporting substrate 1 and the semiconductor portion 8 react via the mask portion 5 or the interface between the mask portion 5 and the seed portion 3.
- Example 4 as shown in FIG. 32, a seed portion 3 (for example, , GaN) may be provided.
- the semiconductor portion 8 is a GaN layer, but it is not limited to this.
- an InGaN layer which is a GaN-based semiconductor portion, can also be formed. Lateral deposition of the InGaN layer is performed at low temperatures, eg, below 1000.degree. This is because, at high temperatures, the vapor pressure of indium increases and it is not effectively incorporated into the film. Lowering the film formation temperature has the effect of reducing the mutual reaction between the mask portion 5 and the InGaN layer. In addition, the InGaN layer has the effect of being less reactive with the mask portion 5 than the GaN layer.
- TAG triethylgallium
- FIG. 33 is a schematic cross-sectional view showing the configuration of Example 6.
- a functional layer 9 forming an LED is formed on the semiconductor portion 8 .
- the semiconductor portion 8 is of n-type doped with silicon or the like, for example.
- the functional layer 9 includes an active layer 34, an electron blocking layer 35, and a GaN-based p-type semiconductor portion 36 in order from the lower layer side.
- the active layer 34 is an MQW (Multi-Quantum Well) and includes an InGaN layer and a GaN layer.
- the electron blocking layer 35 is, for example, an AlGaN layer.
- the GaN-based p-type semiconductor portion 36 is, for example, a GaN layer.
- the anode 38 is arranged so as to be in contact with the GaN-based p-type semiconductor portion 36
- the cathode 39 is arranged so as to be in contact with the semiconductor portion 8 .
- FIG. 34 is a cross-sectional view showing an example of application of the fourth embodiment to electronic equipment.
- a red micro-LED 20R, a green micro-LED 20G, and a blue micro-LED 20B can be obtained, and by mounting these on a drive substrate (TFT substrate) 23, a micro LED display 30D (electronic device) can be configured. can be done.
- a red micro-LED 20R, a green micro-LED 20G, and a blue micro-LED 20B are mounted on a plurality of pixel circuits 27 of the driving substrate 23 via a conductive resin 24 (for example, an anisotropic conductive resin) or the like, and then mounted on the driving substrate 23.
- a control circuit 25, a driver circuit 29, and the like are mounted.
- a portion of the driver circuit 29 may be included in the drive substrate 23 .
- FIG. 35 is a schematic cross-sectional view showing the configuration of Example 7.
- a functional layer 9 forming a semiconductor laser is formed on the semiconductor portion 8 .
- the functional layer 9 includes, from the lower layer side, an n-type optical cladding layer 41, an n-type optical guide layer 42, an active layer 43, an electron blocking layer 44, a p-type optical guide layer 45, a p-type optical cladding layer 46, and a GaN-based layer.
- a p-type semiconductor portion 47 is included.
- An InGaN layer can be used for each of the guide layers 42 and 45 .
- a GaN layer or an AlGaN layer can be used for each of the clad layers 41 and 46 .
- the anode 48 is arranged so as to be in contact with the GaN-based p-type semiconductor portion 47
- the cathode 49 is arranged so as to be in contact with the semiconductor portion 8 .
- a semiconductor device 20 can be obtained by separating the semiconductor portion 8 and the functional layer 9 from the template substrate 7 .
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Led Devices (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
Description
図1は、本実施形態に係る半導体基板の構成を示す平面図および断面図である。本実施形態に係る半導体基板10(半導体ウエハー)は、図1に示すように、支持基板1(主基板1)と、支持基板1よりも上層に位置し、マスク部5を有するマスクパターン6と、支持基板1よりも上層に、平面視において局所的に位置するように配されたシード部3と、マスクパターン6よりも上層に、シード部3およびマスク部5と接するように配された、GaN系半導体を含む半導体部8とを備える。「局所的に位置する」とは「支持基板1の上方に全面的に配置された状態ではないということであり、「部分的に位置する」あるいは「非全面的に位置する」と言い換えることもできる。図1では、支持基板1とシード部3との間に、平面視において局所的に位置するバッファ部2pが設けられており、以下では、シード部3およびバッファ部2pをまとめて積層部4と称することがある。マスクパターン6は、層状のマスク層6であってもよい。シード部3がシードパターンSPに含まれていてもよく、半導体部8が半導体パターン8Pに含まれていてもよい。
図7は、本実施形態にかかる半導体基板の製造方法の一例を示すフローチャートである。図7の半導体基板の製造方法では、テンプレート基板7を準備する工程の後に、テンプレート基板7上に、ELO法を用いて半導体部8を形成する工程を行う。半導体部8を形成する工程の後に、必要に応じて、機能層9を形成する工程を行うことができる。
図9は、本実施形態にかかる半導体デバイスの製造方法の一例を示すフローチャートである。図10は、素子部の分離の一例を示す平面図である。図11は、素子部の分離および離隔の一例を示す断面図である。図9の半導体デバイスの製造方法では、半導体基板10を準備する工程の後に、必要に応じて、半導体部8上に機能層9を形成する工程を行う。その後、図10および図11に示すように、半導体基板10に複数のトレンチTR(分離溝)を形成して素子部DS(半導体部8の低欠陥部EKおよび機能層9を含む)を分離する工程を行う。トレンチTRは、機能層9および半導体部8を貫通する。トレンチTR内にマスク部5および支持基板1が露出してもよい。トレンチTRの開口幅は、開口部Kの幅以上とすることができる。この段階では、素子部DSはマスク部5とファンデルワールス結合しており、半導体基板10の一部である。その後、図11に示すように、素子部DSをテンプレート基板7から離隔し、半導体デバイス20とする工程を行う。図9の半導体基板10を準備する工程に、図7に示される、半導体基板の製造方法の各工程が含まれていてもよい。
図11に示すように、素子部DSをテンプレート基板7から離隔することで、半導体デバイス20(半導体部8を含む)を形成することができる。半導体デバイス20の具体例として、発光ダイオード(LED)、半導体レーザ、ショットキーダイオード、フォトダイオード、トランジスタ(パワートランジスタ、高電子移動度トランジスタを含む)等を挙げることができる。
図12は、本実施形態に係る電子機器の構成を示す模式図である。図12の電子機器30は、半導体基板10(テンプレート基板7を含んだ状態で半導体デバイスとして機能する構成、例えばテンプレート基板7が透光性である場合)と、半導体基板10が実装される駆動基板23と、駆動基板23を制御する制御回路25とを含む。
(全体構成)
図14は、実施例1に係る半導体基板の構成を示す断面図である。図15Aは、実施例1に係るテンプレート基板の構成を示す断面図である。図15Bは、実施例1に係るテンプレート基板の構成を示す拡大図である。実施例1に係る半導体基板10は、図14に示すように、テンプレート基板7と、テンプレート基板7のシード部3およびマスク部5と接するように配された、GaN系半導体を含む半導体部8とを備える。積層部4は、平面視で開口部Kと整合するように局所的に配されている。積層部4は、支持基板1と接するバッファ部2pと、半導体部8に接するシード部3とを含む。積層部4は、支持基板1上に局所的に設けられているため、支持基板1はマスク部5と接触する。
凹部1Bは、Y方向を長手方向とする(図1参照)。開口部Kおよび凹部1Bは互いに整合し、連通孔RKを形成する。連通孔RKの内部に積層部4が形成されるため、積層部4(バッファ部2pおよびシード部3)が凹形状であってもよい。
支持基板1(主基板)には、GaN系半導体と異なる格子定数を有する異種基板を用いることができる。異種基板としては、単結晶のシリコン(Si)基板、サファイア(Al2O3)基板、シリコンカーバイド(SiC)基板等を挙げることができる。支持基板1の面方位は、例えば、シリコン基板の(111)面、サファイア基板の(0001)面、SiC基板の6H-SiC(0001)面である。これらは例示であって、半導体部8をELO法で成長させることができる支持基板および面方位であれば何でもよい。
積層部4として、支持基板1側から順に、バッファ部2pおよびシード部3を設けることができる。シード部3は、半導体部8の成長起点であり、半導体部8と接合する。シード部3には、GaN系半導体、窒化アルミニウム(AlN)、炭化シリコン(SiC)、グラフェン等を用いることができる。シード部3に用いる炭化シリコンは、六方晶系の6H-SiC、4H-SiCが望ましい。実施例1では、スパッタ法、PSD(Pulse sputter deposition)法、あるいはレーザアブレーション法でシード部3を形成することができる。
マスクパターン6は、マスク部5および開口部Kを含む。開口部Kはシード部3を露出させ、半導体部8の成長を開始させる、成長開始用ホールの機能を有し、マスク部5は、半導体部8を横方向成長させるための選択成長用マスクパターンの機能を有していてもよい。マスクパターンの開口部Kは、マスク部5がない部分(非形成部)であり、マスク部5に囲まれていてもよいし、囲まれていなくてもよい。開口部Kは、マスクパターンの開口パターンに含まれる。マスクパターン6として、例えば、シリコン酸化膜(SiOx)、窒化チタン膜(TiN等)、シリコン窒化膜(SiNx)、シリコン酸窒化膜(SiON)、および高融点(例えば1000度以上)をもつ金属膜のいずれか1つを含む単層膜、またはこれらの少なくとも2つを含む積層膜を用いることができる。実施例1では、シリコン基板である支持基板1の熱酸化処理、あるいはシリコン基板である支持基板1の窒化処理によってマスクパターン6を形成することができる。
実施例1では、半導体部8をGaN層とし、図8の半導体形成部72に含まれるMOCVD装置を用いて前述のテンプレート基板7上にELO成膜を行った。ELO成膜条件の一例として、基板温度:1120℃、成長圧力:50kPa、TMG(トリメチルガリウム):22sccm、NH3:15slm、V/III=6000(III族原料の供給量に対する、V族原料の供給量の比)を採用することができる。
図20は、実施例1における素子部の離隔の工程を示す断面図である。実施例1では、図20に示すように、半導体基板10をエッチャントETにつけてマスクパターン6を溶解し、その後、半導体部8の表面に粘着テープTP(例えば、半導体ウエハーをダイシングする際に用いる粘着質のダイシングテープ)を張り付け、そのまま、ペルチェ素子(図示せず)を用いて、粘着テープが付いた状態の半導体基板10を低温に下げてもよい。この際に、一般に半導体よりも熱膨張係数の大きな粘着テープが大きく収縮し、半導体部8に応力が加えられる。半導体部8は、テンプレート基板7の積層部4とのみと結合しており、またマスク部5が除去されているため、粘着テープからの応力が(テンプレート基板7の)積層部4との結合部に効果的に加えられ、機械的に結合部をへき開もしくは破壊することができる。すなわち、結合部をエッチング除去しなくて済む。
図28~図29は、実施例2の半導体基板の構成を示す断面図である。実施例1では、積層部4を開口部Kと重なるように局所的に形成しているが、これに限定されない。図28~図29に示すように、マスク部5を支持基板の熱酸化膜あるいは窒化処理膜とし、マスク部5上にシード部3あるいは積層部4を設けることもできる。すなわち、マスクパターン6は、平面視で半導体部8と重なる開口部をもたない。こうすれば、マスクパターン6をパターニングする工程を省くことができる。この場合、図28のように、マスクパターン6上にシード部3(例えば、GaN系半導体)を設けてもよいし、図29のように、マスクパターン6上に、バッファ部2p(AlN等)を介してシード部3(GaN系半導体等)を設けてもよい。シード部3あるいは積層部4の形成方法として、例えば、真空中で接合面をArプラズマ等で活性化させて圧着させる直接接合法を適用することができる。
図30は実施例3の構成を示す断面図である。図30では、支持基板1としてシリコン基板を用い、局所的なバッファ部2pにSiCを用い、シード部3にAlNを用いる。SiCは3C,4H,6Hの結晶構造をとることが可能である。バッファ部2pにAlNより高温でより安定なSiCを用いると、AlNと比較してよりメルトバックエッチング(支持基板1と半導体部8との溶融)を抑制できるので好ましい。また、シリコン基板との熱膨張係数差がAlNよりも小さいため、半導体部8(GaN層)成長中の反りが更に抑えられ、半導体部8(GaN層)成長時の面内均一性が高められる。
図31~図32は実施例4の構成を示す断面図である。図31では、支持基板1としてシリコン基板を用い、バッファ層2fにSiCを用い、局所的なシード部3にAlNを用いる。SiCは3C,4H,6Hの結晶構造をとることが可能である。バッファ層2fは実質的に支持基板1の上面全面に形成される。バッファ層2fが全面に形成されているため、マスク部5と支持基板1との反応を抑制することができる。マスク部5を薄く設定した場合においても、バッファ層2fが全面にあると、マスク部5あるいは、マスク部5とシード部3との界面を介して、支持基板1と半導体部8とが反応することを抑制できるため好ましい。例えば、マスク部5が20nm以下の厚みになると、支持基板1と半導体部8が反応し、マスク部5上の半導体部8に多数の欠陥を発生させることがあるが、このような現象を回避することができる。実施例4では、図32のように、支持基板1の上面全面に形成されるバッファ層2f(炭化シリコン)上に、局所的なバッファ部2p(例えば、AlN)を介してシード部3(例えば、GaN)を設ける構成でもよい。
実施例1~4では、半導体部8をGaN層としているがこれに限定されない。実施例1~4の半導体部8として、GaN系半導体部であるInGaN層を形成することもできる。InGaN層の横方向成膜は、例えば1000℃を下回るような低温で行う。高温ではインジウムの蒸気圧が高くなり、膜中に有効に取り込まれないためである。成膜温度が低温になることで、マスク部5とInGaN層の相互反応が低減される効果がある。また、InGaN層は、GaN層よりもマスク部5との反応性が低いという効果もある。InGaN層にインジウムがIn組成レベル1%以上で取り込まれるようになると、マスク部5との反応性がさらに低下するため、望ましい。ガリウム原料ガスとしては、トリエチルガリウム(TEG)を用いることが好ましい。
図33は、実施例6の構成を示す模式的断面図である。実施例6では、半導体部8上に、LEDを構成する機能層9を成膜する。半導体部8は、例えばシリコン等がドープされたn型である。機能層9は、下層側から順に、活性層34、電子ブロッキング層35、およびGaN系p型半導体部36を含む。活性層34は、MQW(Multi-Quantum Well)であり、InGaN層およびGaN層を含む。電子ブロッキング層35は、例えばAlGaN層である。GaN系p型半導体部36は、例えばGaN層である。アノード38は、GaN系p型半導体部36と接触するように配され、カソード39は、半導体部8と接触するように配される。導体部8および機能層9をテンプレート基板7から離隔することで半導体デバイス20(GaN系結晶体を含む)を得ることができる。
図35は、実施例7の構成を示す模式的断面図である。実施例7では、半導体部8上に、半導体レーザを構成する機能層9を成膜する。機能層9は、下層側から順に、n型光クラッド層41、n型光ガイド層42、活性層43、電子ブロッキング層44、p型光ガイド層45、p型光クラッド層46、およびGaN系p型半導体部47を含む。各ガイド層42・45には、InGaN層を用いることができる。各クラッド層41・46には、GaN層もしくはAlGaN層を用いることができる。アノード48はGaN系p型半導体部47と接触するように配され、カソード49は半導体部8と接触するように配される。半導体部8および機能層9をテンプレート基板7から離隔することで半導体デバイス20を得ることができる。
以上、本開示に係る発明について、諸図面および実施例に基づいて説明してきた。しかし、本開示に係る発明は上述した各実施形態に限定されるものではない。すなわち、本開示に係る発明は本開示で示した範囲で種々の変更が可能であり、異なる実施形態にそれぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても本開示に係る発明の技術的範囲に含まれる。つまり、当業者であれば本開示に基づき種々の変形または修正を行うことが容易であることに注意されたい。また、これらの変形または修正は本開示の範囲に含まれることに留意されたい。
1B 凹部
2p バッファ部
2f バッファ層
3 シード部
4 積層部
5 マスク部
6 マスクパターン
7 テンプレート基板
8 (ELO)半導体部
9 機能層
10 半導体基板
20 半導体デバイス
30 電子機器
K 開口部
Claims (26)
- 支持基板と、
前記支持基板よりも上層に位置し、マスク部を有するマスクパターンと、
前記支持基板よりも上層に、平面視において局所的に位置するように配されたシード部と、
前記マスクパターンよりも上層に、前記シード部と接するように配された、GaN系半導体を含む半導体部と、を備える半導体基板。 - 前記マスクパターンは開口部を有し、
前記シード部は、平面視で前記開口部と重なるように局所的に配されている、請求項1に記載の半導体基板。 - 前記開口部は、第1方向を幅方向、第2方向を長手方向とする長手形状であり、
前記シード部は長手形状である、請求項2に記載の半導体基板。 - 前記支持基板は、上方に開口した凹部を有し、
前記開口部は、平面視で前記凹部と重なり、
前記シード部は、平面視で前記凹部および前記開口部と重なる、請求項3に記載の半導体基板。 - 前記シード部は断面視で凹形状である、請求項4に記載の半導体基板。
- 前記支持基板下面と前記シード部上面との距離は、前記支持基板下面と前記マスク部上面との距離以下である、請求項2~5のいずれか1項に記載の半導体基板。
- 前記支持基板下面と前記シード部上面との距離は、前記支持基板下面と前記マスク部上面との距離よりも大きい、請求項2~5のいずれか1項に記載の半導体基板。
- 前記凹部は、前記第2方向を長手方向とする形状である、請求項4に記載の半導体基板。
- 前記マスクパターンは、平面視で前記半導体部と重なる開口部をもたない、請求項1に記載の半導体基板。
- 前記支持基板と前記シード部との間に、平面視において局所的に位置するバッファ部が設けられている、請求項1~9のいずれか1項に記載の半導体基板。
- 前記シード部よりも下層に位置するバッファ層を有し、
前記バッファ層が前記支持基板上面と接している、請求項1に記載の半導体基板。 - 前記バッファ層に、SiCおよびAlNの少なくとも一方が含まれる、請求項11に記載の半導体基板。
- 前記マスク部が、前記支持基板に含まれる1種以上の原子と酸素原子または窒素原子とで構成された熱酸化膜または窒化膜を含む、請求項1~12のいずれか1項に記載の半導体基板。
- 前記マスク部は、シリコン窒化膜およびシリコン酸化膜の少なくとも一方を含む積層構造を有する、請求項1~13のいずれか1項に記載の半導体基板。
- 前記半導体部は、平面視で前記マスク部中央と前記シード部との間に位置するエッジを有する、請求項1~14のいずれか1項に記載の半導体基板。
- 前記シード部がGaN系半導体を含み、
前記シード部の酸素含有率が前記半導体部の酸素含有率よりも大きい、請求項1~15のいずれか1項に記載の半導体基板。 - 前記シード部および前記開口部が平面視で整合している、請求項2に記載の半導体基板。
- 請求項1~17のいずれか1項に記載の半導体部を含む半導体デバイス。
- 請求項18に記載の半導体デバイスを含む電子機器。
- 支持基板と、前記支持基板よりも上層に位置し、マスク部および開口部を有するマスクパターンとを備えるテンプレート基板であって、
前記支持基板よりも上層に、平面視において局所的に位置するように配されたシード部を有し、
前記支持基板下面と前記シード部上面との距離は、前記支持基板下面と前記マスク部上面との距離以下である、テンプレート基板。 - 支持基板を準備する工程と、
前記支持基板よりも上方にあるいは前記支持基板内に、開口パターンを含むマスクパターンを形成する工程と、
前記マスクパターンの形成前あるいは形成後に、前記マスクパターンのマスク面積よりも小さいシード面積を有するシードパターンを形成する工程と、
窒化物半導体を含む半導体パターンを、前記開口パターンと重なるシードパターンの上から前記マスクパターンのマスク部上に横方向成長させる工程とを含む、半導体基板の製造方法。 - 前記シードパターンを、スパッタ法、PSD(Pulse sputter deposition)法、あるいはレーザアブレーション法を用いて形成する、請求項21に記載の半導体基板の製造方法。
- 前記開口パターン、前記シードパターンおよび前記半導体パターンが、ストライプ形状である、請求項21に記載の半導体基板の製造方法。
- 前記支持基板の上面に熱酸化処理または窒化処理を施すことで得られる熱酸化膜または窒化膜を用いて前記マスクパターンを形成する、請求項21に記載の半導体基板の製造方法。
- 前記シード面積は、前記開口パターンの開口面積以上である、請求項21に記載の半導体基板の製造方法。
- 請求項21に記載の各工程を行う、半導体基板の製造装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2023502483A JPWO2022181686A1 (ja) | 2021-02-26 | 2022-02-24 | |
EP22759721.8A EP4300605A1 (en) | 2021-02-26 | 2022-02-24 | Semiconductor substrate, method for producing same, apparatus for producing same, and template substrate |
KR1020237029293A KR20230138501A (ko) | 2021-02-26 | 2022-02-24 | 반도체 기판 및 그 제조 방법 및 제조 장치, 템플릿 기판 |
CN202280016192.8A CN116941016A (zh) | 2021-02-26 | 2022-02-24 | 半导体基板和其制造方法以及制造装置、模板基板 |
US18/278,795 US20240136181A1 (en) | 2021-02-26 | 2022-02-24 | Semiconductor substrate, method for manufacturing the same, apparatus for manufacturing the same, and template substrate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-031036 | 2021-02-26 | ||
JP2021031036 | 2021-02-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022181686A1 true WO2022181686A1 (ja) | 2022-09-01 |
Family
ID=83049034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/007587 WO2022181686A1 (ja) | 2021-02-26 | 2022-02-24 | 半導体基板並びにその製造方法および製造装置、テンプレート基板 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20240136181A1 (ja) |
EP (1) | EP4300605A1 (ja) |
JP (1) | JPWO2022181686A1 (ja) |
KR (1) | KR20230138501A (ja) |
CN (1) | CN116941016A (ja) |
TW (1) | TW202249079A (ja) |
WO (1) | WO2022181686A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7255037B1 (ja) * | 2022-10-19 | 2023-04-10 | 京セラ株式会社 | 半導体基板 |
WO2024085243A1 (ja) * | 2022-10-20 | 2024-04-25 | 京セラ株式会社 | 半導体基板、テンプレート基板、並びにテンプレート基板の製造方法および製造装置 |
WO2024085214A1 (ja) * | 2022-10-19 | 2024-04-25 | 京セラ株式会社 | 半導体基板、半導体基板の製造方法および製造装置、半導体デバイスの製造方法 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0575163A (ja) * | 1991-09-13 | 1993-03-26 | Canon Inc | 半導体装置の製造方法 |
JP2001284266A (ja) * | 2000-03-31 | 2001-10-12 | Toyoda Gosei Co Ltd | Iii族窒化物系化合物半導体の製造方法及びiii族窒化物系化合物半導体素子 |
JP2004055799A (ja) * | 2002-07-19 | 2004-02-19 | Toyoda Gosei Co Ltd | 半導体結晶の製造方法 |
JP2006273716A (ja) * | 1997-10-30 | 2006-10-12 | Sumitomo Electric Ind Ltd | GaN単結晶基板の製造方法 |
JP2007189134A (ja) * | 2006-01-16 | 2007-07-26 | Sony Corp | GaN系化合物半導体から成る下地層の形成方法、並びに、GaN系半導体発光素子及びその製造方法 |
JP2007317752A (ja) * | 2006-05-23 | 2007-12-06 | Mitsubishi Cable Ind Ltd | テンプレート基板 |
JP2011066390A (ja) | 2009-08-20 | 2011-03-31 | Pawdec:Kk | 半導体素子の製造方法 |
-
2022
- 2022-02-24 JP JP2023502483A patent/JPWO2022181686A1/ja active Pending
- 2022-02-24 CN CN202280016192.8A patent/CN116941016A/zh active Pending
- 2022-02-24 WO PCT/JP2022/007587 patent/WO2022181686A1/ja active Application Filing
- 2022-02-24 US US18/278,795 patent/US20240136181A1/en active Pending
- 2022-02-24 KR KR1020237029293A patent/KR20230138501A/ko active Search and Examination
- 2022-02-24 EP EP22759721.8A patent/EP4300605A1/en active Pending
- 2022-02-24 TW TW111106737A patent/TW202249079A/zh unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0575163A (ja) * | 1991-09-13 | 1993-03-26 | Canon Inc | 半導体装置の製造方法 |
JP2006273716A (ja) * | 1997-10-30 | 2006-10-12 | Sumitomo Electric Ind Ltd | GaN単結晶基板の製造方法 |
JP2001284266A (ja) * | 2000-03-31 | 2001-10-12 | Toyoda Gosei Co Ltd | Iii族窒化物系化合物半導体の製造方法及びiii族窒化物系化合物半導体素子 |
JP2004055799A (ja) * | 2002-07-19 | 2004-02-19 | Toyoda Gosei Co Ltd | 半導体結晶の製造方法 |
JP2007189134A (ja) * | 2006-01-16 | 2007-07-26 | Sony Corp | GaN系化合物半導体から成る下地層の形成方法、並びに、GaN系半導体発光素子及びその製造方法 |
JP2007317752A (ja) * | 2006-05-23 | 2007-12-06 | Mitsubishi Cable Ind Ltd | テンプレート基板 |
JP2011066390A (ja) | 2009-08-20 | 2011-03-31 | Pawdec:Kk | 半導体素子の製造方法 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7255037B1 (ja) * | 2022-10-19 | 2023-04-10 | 京セラ株式会社 | 半導体基板 |
JP7293520B1 (ja) | 2022-10-19 | 2023-06-19 | 京セラ株式会社 | 半導体基板 |
JP7450090B1 (ja) | 2022-10-19 | 2024-03-14 | 京セラ株式会社 | 半導体基板 |
WO2024085214A1 (ja) * | 2022-10-19 | 2024-04-25 | 京セラ株式会社 | 半導体基板、半導体基板の製造方法および製造装置、半導体デバイスの製造方法 |
WO2024085213A1 (ja) * | 2022-10-19 | 2024-04-25 | 京セラ株式会社 | 半導体基板、半導体基板の製造方法および製造装置、半導体デバイスの製造方法 |
WO2024084634A1 (ja) * | 2022-10-19 | 2024-04-25 | 京セラ株式会社 | 半導体基板、半導体基板の製造方法および製造装置 |
WO2024084630A1 (ja) * | 2022-10-19 | 2024-04-25 | 京セラ株式会社 | 半導体基板、半導体基板の製造方法および製造装置 |
JP2024060556A (ja) * | 2022-10-19 | 2024-05-02 | 京セラ株式会社 | 半導体基板 |
WO2024085243A1 (ja) * | 2022-10-20 | 2024-04-25 | 京セラ株式会社 | 半導体基板、テンプレート基板、並びにテンプレート基板の製造方法および製造装置 |
Also Published As
Publication number | Publication date |
---|---|
US20240136181A1 (en) | 2024-04-25 |
KR20230138501A (ko) | 2023-10-05 |
JPWO2022181686A1 (ja) | 2022-09-01 |
CN116941016A (zh) | 2023-10-24 |
TW202249079A (zh) | 2022-12-16 |
EP4300605A1 (en) | 2024-01-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2022181686A1 (ja) | 半導体基板並びにその製造方法および製造装置、テンプレート基板 | |
CN101853808B (zh) | 形成电路结构的方法 | |
JP5371430B2 (ja) | 半導体基板並びにハイドライド気相成長法により自立半導体基板を製造するための方法及びそれに使用されるマスク層 | |
JP6986645B1 (ja) | 半導体基板、半導体デバイス、電子機器 | |
KR20120098868A (ko) | 고체 상태 조명 장치들을 위한 질화 갈륨 웨이퍼 기판, 및 관련된 시스템들 및 방법들 | |
JP2002313733A (ja) | 窒化物半導体の結晶成長方法及び半導体素子の形成方法 | |
JP2002246646A (ja) | 半導体素子およびその製造方法ならびに半導体基板の製造方法 | |
JP2000091252A (ja) | 窒化ガリウム系化合物半導体及び半導体素子 | |
WO2022220124A1 (ja) | 半導体基板並びにその製造方法および製造装置、GaN系結晶体、半導体デバイス、電子機器 | |
TW202123488A (zh) | 併入應變鬆弛結構的led前驅物 | |
TWI841952B (zh) | 半導體基板及其製造方法、以及其製造裝置、GaN系晶體、半導體裝置、電子機器 | |
TWI838676B (zh) | 半導體基板、半導體裝置、電子機器 | |
WO2022181584A1 (ja) | テンプレート基板並びにその製造方法および製造装置、半導体基板並びにその製造方法および製造装置 | |
EP4362115A1 (en) | Semiconductor device manufacturing method and manufacturing device, semiconductor device and electronic device | |
JP7255037B1 (ja) | 半導体基板 | |
WO2023027086A1 (ja) | 半導体デバイスの製造方法および製造装置 | |
WO2022224902A1 (ja) | 半導体基板並びにその製造方法および製造装置、半導体デバイス並びにその製造方法および製造装置、電子機器 | |
WO2023002865A1 (ja) | テンプレート基板並びにその製造方法および製造装置、半導体基板並びにその製造方法および製造装置、半導体デバイス、電子機器 | |
WO2024085243A1 (ja) | 半導体基板、テンプレート基板、並びにテンプレート基板の製造方法および製造装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22759721 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023502483 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280016192.8 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18278795 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 20237029293 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022759721 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2022759721 Country of ref document: EP Effective date: 20230926 |