WO2005122267A3 - Growth of planar reduced dislocation density m-plane gallium nitride by hydride vapor phase epitaxy - Google Patents
Growth of planar reduced dislocation density m-plane gallium nitride by hydride vapor phase epitaxy Download PDFInfo
- Publication number
- WO2005122267A3 WO2005122267A3 PCT/US2005/018823 US2005018823W WO2005122267A3 WO 2005122267 A3 WO2005122267 A3 WO 2005122267A3 US 2005018823 W US2005018823 W US 2005018823W WO 2005122267 A3 WO2005122267 A3 WO 2005122267A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gallium nitride
- growth
- vapor phase
- dislocation density
- phase epitaxy
- Prior art date
Links
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 title abstract 2
- 229910002601 GaN Inorganic materials 0.000 title 1
- 238000002248 hydride vapour-phase epitaxy Methods 0.000 title 1
- 208000012868 Overgrowth Diseases 0.000 abstract 1
- 230000007847 structural defect Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
Classifications
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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
- 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
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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
- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
- C30B25/02—Epitaxial-layer growth
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02367—Substrates
- H01L21/0237—Materials
- H01L21/02373—Group 14 semiconducting materials
- H01L21/02378—Silicon carbide
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02367—Substrates
- H01L21/0237—Materials
- H01L21/02387—Group 13/15 materials
- H01L21/02389—Nitrides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02367—Substrates
- H01L21/0237—Materials
- H01L21/0242—Crystalline insulating materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02367—Substrates
- H01L21/02433—Crystal orientation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02436—Intermediate layers between substrates and deposited layers
- H01L21/02494—Structure
- H01L21/02496—Layer structure
- H01L21/02502—Layer structure consisting of two layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02538—Group 13/15 materials
- H01L21/0254—Nitrides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02609—Crystal orientation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—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
- H01L21/02647—Lateral overgrowth
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- 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
- H01L33/005—Processes
- H01L33/0062—Processes for devices with an active region comprising only III-V compounds
- H01L33/0066—Processes for devices with an active region comprising only III-V compounds with a substrate not being a III-V compound
- H01L33/007—Processes for devices with an active region comprising only III-V compounds with a substrate not being a III-V compound comprising nitride compounds
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Chemical Vapour Deposition (AREA)
- Semiconductor Lasers (AREA)
Abstract
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020127004001A KR101251443B1 (en) | 2004-06-03 | 2005-05-31 | Growth of planar reduced dislocation density m-plane gallium nitride by hydride vapor phase epitaxy |
JP2007515412A JP5461773B2 (en) | 2004-06-03 | 2005-05-31 | Growth of flat and low dislocation density m-plane gallium nitride by hydride vapor deposition |
KR1020077000164A KR101332391B1 (en) | 2004-06-03 | 2005-05-31 | Growth of planar reduced dislocation density m-plane gallium nitride by hydride vapor phase epitaxy |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US57668504P | 2004-06-03 | 2004-06-03 | |
US60/576,685 | 2004-06-03 |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2005122267A2 WO2005122267A2 (en) | 2005-12-22 |
WO2005122267A3 true WO2005122267A3 (en) | 2006-08-17 |
WO2005122267A8 WO2005122267A8 (en) | 2007-01-11 |
Family
ID=35503823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/018823 WO2005122267A2 (en) | 2004-06-03 | 2005-05-31 | Growth of planar reduced dislocation density m-plane gallium nitride by hydride vapor phase epitaxy |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP5461773B2 (en) |
KR (2) | KR101332391B1 (en) |
WO (1) | WO2005122267A2 (en) |
Cited By (2)
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CN107002275A (en) * | 2014-12-04 | 2017-08-01 | 希波特公司 | Group III-nitride substrate and its manufacture method |
CN112397604B (en) * | 2020-11-18 | 2022-05-17 | 西安电子科技大学 | PN junction ultraviolet detector based on m-plane 4H-SiC heteroepitaxy nonpolar AlGaN/BN and preparation method |
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US8324660B2 (en) | 2005-05-17 | 2012-12-04 | Taiwan Semiconductor Manufacturing Company, Ltd. | Lattice-mismatched semiconductor structures with reduced dislocation defect densities and related methods for device fabrication |
EP1882268B1 (en) * | 2005-05-17 | 2016-12-14 | Taiwan Semiconductor Manufacturing Company, Ltd. | Lattice-mismatched semiconductor structures with reduced dislocation defect densities and related methods for device fabrication |
US9153645B2 (en) | 2005-05-17 | 2015-10-06 | Taiwan Semiconductor Manufacturing Company, Ltd. | Lattice-mismatched semiconductor structures with reduced dislocation defect densities and related methods for device fabrication |
WO2007112066A2 (en) | 2006-03-24 | 2007-10-04 | Amberwave Systems Corporation | Lattice-mismatched semiconductor structures and related methods for device fabrication |
US9754782B2 (en) | 2006-04-07 | 2017-09-05 | Sixpoint Materials, Inc. | Group III nitride substrates and their fabrication method |
KR100809209B1 (en) * | 2006-04-25 | 2008-02-29 | 삼성전기주식회사 | METHOD OF GROWING NON-POLAR m-PLANE NITRIDE SEMICONDUCTOR |
KR20090018106A (en) * | 2006-05-09 | 2009-02-19 | 더 리전츠 오브 더 유니버시티 오브 캘리포니아 | In-situ defect reduction techniques for nonpolar and semipolar (al, ga, in)n |
JP4713426B2 (en) * | 2006-08-30 | 2011-06-29 | 京セラ株式会社 | Epitaxial substrate and vapor phase growth method |
WO2008030574A1 (en) | 2006-09-07 | 2008-03-13 | Amberwave Systems Corporation | Defect reduction using aspect ratio trapping |
US7875958B2 (en) | 2006-09-27 | 2011-01-25 | Taiwan Semiconductor Manufacturing Company, Ltd. | Quantum tunneling devices and circuits with lattice-mismatched semiconductor structures |
US20080187018A1 (en) | 2006-10-19 | 2008-08-07 | Amberwave Systems Corporation | Distributed feedback lasers formed via aspect ratio trapping |
JP2008108924A (en) * | 2006-10-26 | 2008-05-08 | Matsushita Electric Works Ltd | Compound semiconductor light-emitting element, illumination apparatus employing the same and manufacturing method of compound semiconductor light-emitting element |
KR100860709B1 (en) | 2006-12-21 | 2008-09-26 | 주식회사 실트론 | Method of growing GaN layer for manufacturing Light Emitting Diode having enhanced light extraction characteristics, Method of manufacturing Light Emitting Diode using the same, and Light Emitting Diode device thereof |
US9508890B2 (en) | 2007-04-09 | 2016-11-29 | Taiwan Semiconductor Manufacturing Company, Ltd. | Photovoltaics on silicon |
US8237151B2 (en) | 2009-01-09 | 2012-08-07 | Taiwan Semiconductor Manufacturing Company, Ltd. | Diode-based devices and methods for making the same |
US8304805B2 (en) | 2009-01-09 | 2012-11-06 | Taiwan Semiconductor Manufacturing Company, Ltd. | Semiconductor diodes fabricated by aspect ratio trapping with coalesced films |
US7825328B2 (en) | 2007-04-09 | 2010-11-02 | Taiwan Semiconductor Manufacturing Company, Ltd. | Nitride-based multi-junction solar cell modules and methods for making the same |
US8329541B2 (en) | 2007-06-15 | 2012-12-11 | Taiwan Semiconductor Manufacturing Company, Ltd. | InP-based transistor fabrication |
JP4825745B2 (en) * | 2007-07-13 | 2011-11-30 | 日本碍子株式会社 | Method for producing nonpolar group III nitride |
JP4825746B2 (en) * | 2007-07-13 | 2011-11-30 | 日本碍子株式会社 | Method for producing nonpolar group III nitride |
DE112008002387B4 (en) | 2007-09-07 | 2022-04-07 | Taiwan Semiconductor Manufacturing Co., Ltd. | Structure of a multijunction solar cell, method of forming a photonic device, photovoltaic multijunction cell and photovoltaic multijunction cell device, |
US8183667B2 (en) | 2008-06-03 | 2012-05-22 | Taiwan Semiconductor Manufacturing Co., Ltd. | Epitaxial growth of crystalline material |
US8274097B2 (en) | 2008-07-01 | 2012-09-25 | Taiwan Semiconductor Manufacturing Company, Ltd. | Reduction of edge effects from aspect ratio trapping |
JP5295871B2 (en) * | 2008-07-03 | 2013-09-18 | 古河機械金属株式会社 | Method for manufacturing group III nitride semiconductor substrate |
US8981427B2 (en) | 2008-07-15 | 2015-03-17 | Taiwan Semiconductor Manufacturing Company, Ltd. | Polishing of small composite semiconductor materials |
CN102160145B (en) | 2008-09-19 | 2013-08-21 | 台湾积体电路制造股份有限公司 | Formation of devices by epitaxial layer overgrowth |
US20100072515A1 (en) | 2008-09-19 | 2010-03-25 | Amberwave Systems Corporation | Fabrication and structures of crystalline material |
US8253211B2 (en) | 2008-09-24 | 2012-08-28 | Taiwan Semiconductor Manufacturing Company, Ltd. | Semiconductor sensor structures with reduced dislocation defect densities |
US20110179993A1 (en) * | 2009-03-06 | 2011-07-28 | Akira Inoue | Crystal growth process for nitride semiconductor, and method for manufacturing semiconductor device |
CN102379046B (en) | 2009-04-02 | 2015-06-17 | 台湾积体电路制造股份有限公司 | Devices formed from a non-polar plane of a crystalline material and method of making the same |
JP4891462B2 (en) | 2009-11-12 | 2012-03-07 | パナソニック株式会社 | Gallium nitride compound semiconductor light emitting device |
JP5891390B2 (en) * | 2012-10-05 | 2016-03-23 | パナソニックIpマネジメント株式会社 | Nitride semiconductor structure, laminated structure, and nitride semiconductor light emitting device |
JP6137197B2 (en) | 2012-12-17 | 2017-05-31 | 三菱化学株式会社 | Gallium nitride substrate and method of manufacturing nitride semiconductor crystal |
KR20180077433A (en) * | 2016-12-29 | 2018-07-09 | 주식회사 루미스탈 | Nitride Semiconductor Device and Method for manufacturing thereof |
WO2019191760A1 (en) * | 2018-03-30 | 2019-10-03 | The Regents Of The University Of California | Method of fabricating non-polar and semi-polar devices using epitaxial lateral overgrowth |
CN114577659B (en) * | 2022-01-26 | 2024-02-06 | 株洲科能新材料股份有限公司 | Method for detecting gallium content in gallium nitride material |
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US5926726A (en) * | 1997-09-12 | 1999-07-20 | Sdl, Inc. | In-situ acceptor activation in group III-v nitride compound semiconductors |
US6156581A (en) * | 1994-01-27 | 2000-12-05 | Advanced Technology Materials, Inc. | GaN-based devices using (Ga, AL, In)N base layers |
US6177057B1 (en) * | 1999-02-09 | 2001-01-23 | The United States Of America As Represented By The Secretary Of The Navy | Process for preparing bulk cubic gallium nitride |
US6468882B2 (en) * | 2000-07-10 | 2002-10-22 | Sumitomo Electric Industries, Ltd. | Method of producing a single crystal gallium nitride substrate and single crystal gallium nitride substrate |
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US6177292B1 (en) * | 1996-12-05 | 2001-01-23 | Lg Electronics Inc. | Method for forming GaN semiconductor single crystal substrate and GaN diode with the substrate |
JP3139445B2 (en) * | 1997-03-13 | 2001-02-26 | 日本電気株式会社 | GaN-based semiconductor growth method and GaN-based semiconductor film |
JP3642001B2 (en) * | 2000-04-27 | 2005-04-27 | 日本電気株式会社 | Nitride semiconductor element, method for producing nitride semiconductor crystal, and nitride semiconductor substrate |
-
2005
- 2005-05-31 KR KR1020077000164A patent/KR101332391B1/en not_active IP Right Cessation
- 2005-05-31 JP JP2007515412A patent/JP5461773B2/en not_active Expired - Fee Related
- 2005-05-31 WO PCT/US2005/018823 patent/WO2005122267A2/en active Application Filing
- 2005-05-31 KR KR1020127004001A patent/KR101251443B1/en not_active IP Right Cessation
Patent Citations (4)
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US6156581A (en) * | 1994-01-27 | 2000-12-05 | Advanced Technology Materials, Inc. | GaN-based devices using (Ga, AL, In)N base layers |
US5926726A (en) * | 1997-09-12 | 1999-07-20 | Sdl, Inc. | In-situ acceptor activation in group III-v nitride compound semiconductors |
US6177057B1 (en) * | 1999-02-09 | 2001-01-23 | The United States Of America As Represented By The Secretary Of The Navy | Process for preparing bulk cubic gallium nitride |
US6468882B2 (en) * | 2000-07-10 | 2002-10-22 | Sumitomo Electric Industries, Ltd. | Method of producing a single crystal gallium nitride substrate and single crystal gallium nitride substrate |
Non-Patent Citations (2)
Title |
---|
AUJOL E. ET AL.: "Hydrogen and nitrogen ambient effects on epitaxial growth of GaN by hydride vapour phase epitaxy", JOURNAL OF CRYSTAL GROWTH, vol. 230, no. 2201, pages 372 - 376, XP004296535 * |
WALTEREIT P. ET AL.: "M-plane GaN(1100) grown on y-LiA1O2(100): nitride semiconductors free of internal electrostatic fields", JOURNAL OF CRYSTAL GROWTH, vol. 227-228, 2001, pages 437 - 441, XP004250873 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107002275A (en) * | 2014-12-04 | 2017-08-01 | 希波特公司 | Group III-nitride substrate and its manufacture method |
CN112397604B (en) * | 2020-11-18 | 2022-05-17 | 西安电子科技大学 | PN junction ultraviolet detector based on m-plane 4H-SiC heteroepitaxy nonpolar AlGaN/BN and preparation method |
Also Published As
Publication number | Publication date |
---|---|
WO2005122267A2 (en) | 2005-12-22 |
KR101332391B1 (en) | 2013-11-22 |
JP2008501606A (en) | 2008-01-24 |
WO2005122267A8 (en) | 2007-01-11 |
KR101251443B1 (en) | 2013-04-08 |
JP5461773B2 (en) | 2014-04-02 |
KR20070051831A (en) | 2007-05-18 |
KR20120046748A (en) | 2012-05-10 |
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