JP2015225956A - 半導体素子の製造方法 - Google Patents
半導体素子の製造方法 Download PDFInfo
- Publication number
- JP2015225956A JP2015225956A JP2014110127A JP2014110127A JP2015225956A JP 2015225956 A JP2015225956 A JP 2015225956A JP 2014110127 A JP2014110127 A JP 2014110127A JP 2014110127 A JP2014110127 A JP 2014110127A JP 2015225956 A JP2015225956 A JP 2015225956A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- epitaxially growing
- aln
- buffer layer
- buffer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 22
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 239000013078 crystal Substances 0.000 claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 abstract description 10
- 239000002019 doping agent Substances 0.000 description 6
- 229910002704 AlGaN Inorganic materials 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 150000004767 nitrides Chemical class 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- KTWOOEGAPBSYNW-UHFFFAOYSA-N ferrocene Chemical compound [Fe+2].C=1C=C[CH-]C=1.C=1C=C[CH-]C=1 KTWOOEGAPBSYNW-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000005693 optoelectronics Effects 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
- H01L21/02436—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
- H01L21/02367—Substrates
- H01L21/0237—Materials
- H01L21/02373—Group 14 semiconducting materials
- H01L21/02378—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
- H01L21/02494—Structure
- H01L21/02496—Layer structure
- H01L21/02502—Layer structure consisting of 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
- H01L21/0257—Doping during depositing
- H01L21/02573—Conductivity type
- H01L21/02581—Transition metal or rare earth elements
-
- 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
- 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
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66446—Unipolar field-effect transistors with an active layer made of a group 13/15 material, e.g. group 13/15 velocity modulation transistor [VMT], group 13/15 negative resistance FET [NERFET]
- H01L29/66462—Unipolar field-effect transistors with an active layer made of a group 13/15 material, e.g. group 13/15 velocity modulation transistor [VMT], group 13/15 negative resistance FET [NERFET] with a heterojunction interface channel or gate, e.g. HFET, HIGFET, SISFET, HJFET, HEMT
-
- 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
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/778—Field effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT ; with two-dimensional charge-carrier layer formed at a heterojunction interface
- H01L29/7786—Field effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT ; with two-dimensional charge-carrier layer formed at a heterojunction interface with direct single heterostructure, i.e. with wide bandgap layer formed on top of active layer, e.g. direct single heterostructure MIS-like HEMT
-
- 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
- H01L29/207—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 further characterised by the doping material
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Junction Field-Effect Transistors (AREA)
Abstract
Description
図1は、本発明の実施の形態1に係る半導体素子の製造方法で製造された半導体素子10の断面図である。半導体素子10はGaN系のHEMT(High Electron Mobility Transistor)を構成している。半導体素子10は単結晶SiCで形成された基板12を備えている。基板12はサファイア又はSiで形成してもよい。基板12の上にはAlN層14が形成されている。
実施の形態2に係る半導体素子の製造方法は、実施の形態1との共通点が多いので、実施の形態1との相違点を中心に説明する。第2工程では、AlN層14の上に、Feを添加しつつバッファ層16をエピタキシャル成長する。バッファ層16は、x+y+zが1でありyが0でないAlxGayInzNである。
Claims (10)
- 基板上にAlN層をエピタキシャル成長する第1工程と、
前記AlN層の上に、Feを添加せずに、x+y+zが1でありyが0でないAlxGayInzNをエピタキシャル成長してバッファ層を形成する第2工程と、
前記バッファ層の上に、Feを添加しつつx+y+zが1でありyが0でないAlxGayInzNをエピタキシャル成長して抵抗層を形成する第3工程と、
前記抵抗層の上にチャネル層をエピタキシャル成長する工程と、
前記チャネル層の上方に電子供給層をエピタキシャル成長する工程と、
前記電子供給層の上方に電極を形成する工程と、を備えたことを特徴とする半導体素子の製造方法。 - 基板上にAlN層をエピタキシャル成長する第1工程と、
前記AlN層の上に、Feを添加しつつx+y+zが1でありyが0でないAlxGayInzNをエピタキシャル成長してバッファ層を形成する第2工程と、
前記バッファ層の上に、Feを添加しつつx+y+zが1でありyが0でないAlxGayInzNをエピタキシャル成長して抵抗層を形成する第3工程と、
前記抵抗層の上にチャネル層をエピタキシャル成長する工程と、
前記チャネル層の上方に電子供給層をエピタキシャル成長する工程と、
前記電子供給層の上方に電極を形成する工程と、を備え、
前記第2工程で前記バッファ層に添加するFeの濃度は、前記第3工程で前記抵抗層に添加するFeの濃度より低いことを特徴とする半導体素子の製造方法。 - 前記第3工程で前記抵抗層に添加された前記Feの一部は、前記電極形成までに前記バッファ層へ熱拡散し、前記バッファ層と前記AlN層の界面のFe濃度を1×1017cm−3以上に高めることを特徴とする請求項1又は2に記載の半導体素子の製造方法。
- 前記抵抗層の厚さは200nm〜400nmであり、
前記第3工程では、前記抵抗層のFeの濃度が1×1017cm−3〜1×1020cm−3の範囲となるように、Feを添加することを特徴とする請求項1〜3のいずれか1項に記載の半導体素子の製造方法。 - 前記バッファ層の厚さは150nm以下であることを特徴とする請求項1〜4のいずれか1項に記載の半導体素子の製造方法。
- 前記基板は単結晶SiCであることを特徴とする請求項1〜5のいずれか1項に記載の半導体素子の製造方法。
- 前記AlN層は、裏面より表面の凹凸が大きいことを特徴とする請求項1〜6のいずれか1項に記載の半導体素子の製造方法。
- 基板上にAlN層をエピタキシャル成長する第1工程と、
前記AlN層の上に、Feを添加せずに、xが0より大きく1より小さいAlxGa1−xNをエピタキシャル成長してひずみ緩和層を形成する工程と、
前記ひずみ緩和層の上に、x+y+zが1でありyが0でないAlxGayInzNをエピタキシャル成長してバッファ層を形成する第2工程と、
前記バッファ層の上に、Feを添加しつつx+y+zが1でありyが0でないAlxGayInzNをエピタキシャル成長して抵抗層を形成する第3工程と、
前記抵抗層の上にチャネル層をエピタキシャル成長する工程と、
前記チャネル層の上方に電子供給層をエピタキシャル成長する工程と、
前記電子供給層の上方に電極を形成する工程と、を備え、
前記ひずみ緩和層の格子定数は前記AlN層の格子定数と前記バッファ層の格子定数の間の値であることを特徴とする半導体素子の製造方法。 - 前記第3工程で前記抵抗層に添加された前記Feの一部は、前記電極形成までに前記バッファ層及び前記ひずみ緩和層へ熱拡散し、前記ひずみ緩和層と前記AlN層の界面でのFe濃度を1×1017cm−3以上とすることを特徴とする請求項8に記載の半導体素子の製造方法。
- 前記ひずみ緩和層の厚さと前記バッファ層の厚さの合計を150nm以下としたことを特徴とする請求項8又は9に記載の半導体素子の製造方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014110127A JP6331695B2 (ja) | 2014-05-28 | 2014-05-28 | 半導体素子の製造方法 |
US14/641,202 US9478418B2 (en) | 2014-05-28 | 2015-03-06 | Method of manufacturing semiconductor element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014110127A JP6331695B2 (ja) | 2014-05-28 | 2014-05-28 | 半導体素子の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015225956A true JP2015225956A (ja) | 2015-12-14 |
JP6331695B2 JP6331695B2 (ja) | 2018-05-30 |
Family
ID=54702617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014110127A Active JP6331695B2 (ja) | 2014-05-28 | 2014-05-28 | 半導体素子の製造方法 |
Country Status (2)
Country | Link |
---|---|
US (1) | US9478418B2 (ja) |
JP (1) | JP6331695B2 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019134153A (ja) * | 2018-01-30 | 2019-08-08 | 株式会社東芝 | 窒化物半導体装置 |
JPWO2019130546A1 (ja) * | 2017-12-28 | 2020-04-16 | 三菱電機株式会社 | 窒化物半導体装置およびその製造方法 |
JP2021520643A (ja) * | 2018-04-11 | 2021-08-19 | アイクストロン、エスイー | 核生成層の堆積方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI730494B (zh) | 2019-11-06 | 2021-06-11 | 錼創顯示科技股份有限公司 | 半導體結構 |
CN110767784A (zh) * | 2019-11-06 | 2020-02-07 | 錼创显示科技股份有限公司 | 半导体结构 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008205146A (ja) * | 2007-02-20 | 2008-09-04 | Fujitsu Ltd | 化合物半導体装置及びその製造方法 |
JP2011204891A (ja) * | 2010-03-25 | 2011-10-13 | Panasonic Corp | トランジスタ及びその製造方法 |
JP2013012767A (ja) * | 2012-08-31 | 2013-01-17 | Fujitsu Ltd | 化合物半導体装置、およびその製造方法 |
JP2013084819A (ja) * | 2011-10-11 | 2013-05-09 | Toshiba Corp | 窒化物半導体ウェーハ、窒化物半導体装置及び窒化物半導体結晶の成長方法 |
JP2013206976A (ja) * | 2012-03-27 | 2013-10-07 | Fujitsu Ltd | 化合物半導体装置及びその製造方法 |
JP2013211363A (ja) * | 2012-03-30 | 2013-10-10 | Hitachi Cable Ltd | 窒化物半導体エピタキシャルウェハ及びその製造方法 |
JP2014072430A (ja) * | 2012-09-28 | 2014-04-21 | Fujitsu Ltd | 半導体装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0658892B2 (ja) | 1987-03-19 | 1994-08-03 | シャープ株式会社 | 半導体ウエハ |
JP2006135274A (ja) | 2004-10-06 | 2006-05-25 | New Japan Radio Co Ltd | 窒化物半導体装置及びその製造方法 |
JP5095253B2 (ja) * | 2007-03-30 | 2012-12-12 | 富士通株式会社 | 半導体エピタキシャル基板、化合物半導体装置、およびそれらの製造方法 |
WO2009147774A1 (ja) * | 2008-06-05 | 2009-12-10 | パナソニック株式会社 | 半導体装置 |
US8742459B2 (en) * | 2009-05-14 | 2014-06-03 | Transphorm Inc. | High voltage III-nitride semiconductor devices |
JP5987288B2 (ja) * | 2011-09-28 | 2016-09-07 | 富士通株式会社 | 半導体装置 |
KR102036349B1 (ko) * | 2013-03-08 | 2019-10-24 | 삼성전자 주식회사 | 고 전자이동도 트랜지스터 |
US9455341B2 (en) * | 2013-07-17 | 2016-09-27 | Taiwan Semiconductor Manufacturing Company, Ltd. | Transistor having a back-barrier layer and method of making the same |
-
2014
- 2014-05-28 JP JP2014110127A patent/JP6331695B2/ja active Active
-
2015
- 2015-03-06 US US14/641,202 patent/US9478418B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008205146A (ja) * | 2007-02-20 | 2008-09-04 | Fujitsu Ltd | 化合物半導体装置及びその製造方法 |
JP2011204891A (ja) * | 2010-03-25 | 2011-10-13 | Panasonic Corp | トランジスタ及びその製造方法 |
JP2013084819A (ja) * | 2011-10-11 | 2013-05-09 | Toshiba Corp | 窒化物半導体ウェーハ、窒化物半導体装置及び窒化物半導体結晶の成長方法 |
JP2013206976A (ja) * | 2012-03-27 | 2013-10-07 | Fujitsu Ltd | 化合物半導体装置及びその製造方法 |
JP2013211363A (ja) * | 2012-03-30 | 2013-10-10 | Hitachi Cable Ltd | 窒化物半導体エピタキシャルウェハ及びその製造方法 |
JP2013012767A (ja) * | 2012-08-31 | 2013-01-17 | Fujitsu Ltd | 化合物半導体装置、およびその製造方法 |
JP2014072430A (ja) * | 2012-09-28 | 2014-04-21 | Fujitsu Ltd | 半導体装置 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2019130546A1 (ja) * | 2017-12-28 | 2020-04-16 | 三菱電機株式会社 | 窒化物半導体装置およびその製造方法 |
JP2019134153A (ja) * | 2018-01-30 | 2019-08-08 | 株式会社東芝 | 窒化物半導体装置 |
JP2021520643A (ja) * | 2018-04-11 | 2021-08-19 | アイクストロン、エスイー | 核生成層の堆積方法 |
JP7441794B2 (ja) | 2018-04-11 | 2024-03-01 | アイクストロン、エスイー | 核生成層の堆積方法 |
Also Published As
Publication number | Publication date |
---|---|
US9478418B2 (en) | 2016-10-25 |
JP6331695B2 (ja) | 2018-05-30 |
US20150348780A1 (en) | 2015-12-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8450782B2 (en) | Field effect transistor, method of manufacturing field effect transistor, and method of forming groove | |
JP5374011B2 (ja) | 窒化物半導体装置 | |
JP6331695B2 (ja) | 半導体素子の製造方法 | |
US9466684B2 (en) | Transistor with diamond gate | |
JP6260145B2 (ja) | 半導体装置の製造方法 | |
JP5637086B2 (ja) | エピタキシャルウエハ及び半導体素子 | |
JP2009246292A (ja) | 電界効果トランジスタ | |
JP2016004948A (ja) | 半導体装置 | |
CN102623494A (zh) | 氮化物半导体装置及其制造方法 | |
JP6547581B2 (ja) | 半導体装置 | |
US20160043178A1 (en) | Semiconductor component and method of manufacture | |
JP2008147311A (ja) | 電界効果トランジスタおよびその製造方法 | |
JP2016207748A (ja) | 半導体装置の製造方法および半導体装置 | |
JP2016100471A (ja) | 半導体装置及び半導体装置の製造方法 | |
JP2012243792A (ja) | GaN薄膜貼り合わせ基板およびその製造方法、ならびにGaN系高電子移動度トランジスタおよびその製造方法 | |
US20200266292A1 (en) | Composite substrates of conductive and insulating or semi-insulating silicon carbide for gallium nitride devices | |
US20170200806A1 (en) | Epitaxial Substrate for Semiconductor Device and Method for Manufacturing Same | |
JP2006279021A (ja) | 縦型窒化ガリウム半導体装置およびエピタキシャル基板 | |
JP2007200975A (ja) | 半導体装置とその製造法 | |
JP2018093076A (ja) | 半導体装置の製造方法 | |
WO2018098952A1 (zh) | 氮化镓基外延结构、半导体器件及其形成方法 | |
JP6652042B2 (ja) | Iii−v族窒化物半導体エピタキシャルウェハの製造方法 | |
JP2007123824A (ja) | Iii族窒化物系化合物半導体を用いた電子装置 | |
US20230104038A1 (en) | Epitaxial structure for high-electron-mobility transistor and method for manufacturing the same | |
JP6519920B2 (ja) | 半導体基板の製造方法、及び半導体装置の製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20161125 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20170825 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20170905 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20171005 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20171212 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20180130 |
|
A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20180207 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20180403 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20180416 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6331695 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |