RU2013122654A - METHOD FOR PRODUCING NITRIDE CRYSTAL III GROUP WITH A LOW DENSITY OF DISLOCATIONS - Google Patents
METHOD FOR PRODUCING NITRIDE CRYSTAL III GROUP WITH A LOW DENSITY OF DISLOCATIONS Download PDFInfo
- Publication number
- RU2013122654A RU2013122654A RU2013122654/05A RU2013122654A RU2013122654A RU 2013122654 A RU2013122654 A RU 2013122654A RU 2013122654/05 A RU2013122654/05 A RU 2013122654/05A RU 2013122654 A RU2013122654 A RU 2013122654A RU 2013122654 A RU2013122654 A RU 2013122654A
- Authority
- RU
- Russia
- Prior art keywords
- layer
- pits
- group iii
- iii nitride
- nitride
- Prior art date
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Classifications
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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
- 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
- C30B25/186—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
- 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
- C30B25/20—Epitaxial-layer growth characterised by the substrate the substrate being of the same materials as the epitaxial 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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
1. Способ получения кристалла нитрида III группы с низкой плотностью дислокаций, включающий следующие стадии:а) осаждение первого слоя нитрида III группы;б) образование ямок в местах пронизывающих дислокаций;в) формирование маскирующего слоя в областях ямок посредством процесса самосовмещения;г) осаждение второго слоя нитрида III группы,где нитрид III группы - это нитрид галлия, нитрид алюминия, нитрид индия или их сплав любого состава; распространение дислокаций во второй слой нитрида III группы предотвращают указанным выше маскирующим слоем, и области ямок латерально заращивают указанным слоем нитрида III группы с образованием плоской поверхности.2. Способ по п.1, где ямки представляют собой перевернутые пирамиды, образованные при выращивании первого слоя нитрида III группы.3. Способ по п.1, где ямки образуют in situ травлением с использованием водорода, хлористого водорода, хлора или любой их смеси.4. Способ по п.1, где ямки образуют ex situ химическим травлением с использованием кислоты или щелочи.5. Способ по п.1, где образование маскирующего слоя включает следующие стадии:а) осаждение диэлектрического слоя;б) нанесение слоя смолы на диэлектрическую поверхность центрифугированием;в) травление слоя смолы, оставляя смолу только в ямках;г) избирательное травление диэлектрического слоя, оставляя диэлектрическую маску только в ямах;е) удаление смолы.6. Способ по п.1, где образование маскирующего слоя включает следующие стадии:а) нанесение слоя стекла (ЦС) центрифугированием на слой нитрида III группы;б) обжиг и отверждение слоя ЦС;в) травление слоя ЦС, оставляя ЦС только в ямках.7. Способ по п.1, где образование маскирующего слоя включа1. A method of obtaining a crystal of group III nitride with a low dislocation density, which includes the following stages: a) deposition of the first layer of group III nitride; b) the formation of pits in the places of penetrating dislocations; c) the formation of a masking layer in the regions of the pits through a self-alignment process; d) deposition the second layer of group III nitride, where group III nitride is gallium nitride, aluminum nitride, indium nitride or their alloy of any composition; the propagation of dislocations into the second layer of group III nitride is prevented by the masking layer indicated above, and the dimple regions are laterally covered with the specified layer of group III nitride to form a flat surface. 2. The method according to claim 1, where the pits are inverted pyramids formed during the cultivation of the first layer of group III nitride. The method of claim 1, wherein the pits are formed in situ by etching using hydrogen, hydrogen chloride, chlorine, or any mixture thereof. The method of claim 1, wherein the pits are formed ex situ by chemical etching using acid or alkali. The method according to claim 1, where the formation of the masking layer includes the following stages: a) deposition of the dielectric layer; b) applying a resin layer to the dielectric surface by centrifugation; c) etching the resin layer, leaving the resin only in the pits; d) selective etching of the dielectric layer, leaving dielectric mask only in the pits; e) resin removal. 6. The method according to claim 1, where the formation of a masking layer includes the following stages: a) applying a glass layer (CA) by centrifugation on a layer of group III nitride; b) roasting and curing the CA layer; c) etching the CA layer, leaving the CA only in the pits. . The method according to claim 1, where the formation of a masking layer including
Claims (7)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US40539310P | 2010-10-21 | 2010-10-21 | |
US61/405,393 | 2010-10-21 | ||
PCT/EP2011/068337 WO2012052513A1 (en) | 2010-10-21 | 2011-10-20 | Method for producing a low dislocation density iii-nitride crystal |
Publications (1)
Publication Number | Publication Date |
---|---|
RU2013122654A true RU2013122654A (en) | 2014-11-27 |
Family
ID=44936248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU2013122654/05A RU2013122654A (en) | 2010-10-21 | 2011-10-20 | METHOD FOR PRODUCING NITRIDE CRYSTAL III GROUP WITH A LOW DENSITY OF DISLOCATIONS |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2630277A1 (en) |
RU (1) | RU2013122654A (en) |
WO (1) | WO2012052513A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103165434A (en) * | 2013-01-28 | 2013-06-19 | 华中科技大学 | Method using H2 corrosion and SiNx burying to improve quality of AlGaN material |
JP6315665B2 (en) * | 2014-02-19 | 2018-04-25 | 古河機械金属株式会社 | Group III nitride semiconductor layer and group III nitride semiconductor substrate manufacturing method |
FR3048547B1 (en) * | 2016-03-04 | 2018-11-09 | Saint-Gobain Lumilog | PROCESS FOR PRODUCING A SEMICONDUCTOR SUBSTRATE |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6447604B1 (en) * | 2000-03-13 | 2002-09-10 | Advanced Technology Materials, Inc. | Method for achieving improved epitaxy quality (surface texture and defect density) on free-standing (aluminum, indium, gallium) nitride ((al,in,ga)n) substrates for opto-electronic and electronic devices |
JP3988018B2 (en) * | 2001-01-18 | 2007-10-10 | ソニー株式会社 | Crystal film, crystal substrate and semiconductor device |
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2011
- 2011-10-20 RU RU2013122654/05A patent/RU2013122654A/en not_active Application Discontinuation
- 2011-10-20 WO PCT/EP2011/068337 patent/WO2012052513A1/en active Application Filing
- 2011-10-20 EP EP11772973.1A patent/EP2630277A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2012052513A1 (en) | 2012-04-26 |
EP2630277A1 (en) | 2013-08-28 |
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HE9A | Changing address for correspondence with an applicant | ||
FA92 | Acknowledgement of application withdrawn (lack of supplementary materials submitted) |
Effective date: 20160125 |