JP6939844B2 - 炭化珪素基板およびその製造方法、および炭化珪素半導体装置の製造方法 - Google Patents
炭化珪素基板およびその製造方法、および炭化珪素半導体装置の製造方法 Download PDFInfo
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- JP6939844B2 JP6939844B2 JP2019098018A JP2019098018A JP6939844B2 JP 6939844 B2 JP6939844 B2 JP 6939844B2 JP 2019098018 A JP2019098018 A JP 2019098018A JP 2019098018 A JP2019098018 A JP 2019098018A JP 6939844 B2 JP6939844 B2 JP 6939844B2
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- 239000000758 substrate Substances 0.000 title claims description 106
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims description 87
- 229910010271 silicon carbide Inorganic materials 0.000 title claims description 86
- 239000004065 semiconductor Substances 0.000 title claims description 35
- 238000004519 manufacturing process Methods 0.000 title claims description 25
- 239000013078 crystal Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims description 14
- 238000005498 polishing Methods 0.000 description 95
- 239000007788 liquid Substances 0.000 description 48
- 150000002500 ions Chemical class 0.000 description 38
- 239000010410 layer Substances 0.000 description 24
- 239000002994 raw material Substances 0.000 description 20
- 238000004140 cleaning Methods 0.000 description 13
- 230000007547 defect Effects 0.000 description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- 239000006061 abrasive grain Substances 0.000 description 9
- 239000007800 oxidant agent Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 7
- 238000005530 etching Methods 0.000 description 5
- 229910044991 metal oxide Inorganic materials 0.000 description 5
- 150000004706 metal oxides Chemical class 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- JYLNVJYYQQXNEK-UHFFFAOYSA-N 3-amino-2-(4-chlorophenyl)-1-propanesulfonic acid Chemical compound OS(=O)(=O)CC(CN)C1=CC=C(Cl)C=C1 JYLNVJYYQQXNEK-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 150000003109 potassium Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 150000003385 sodium Chemical class 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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- 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
- C30B33/00—After-treatment of single crystals or homogeneous polycrystalline material with defined structure
- C30B33/08—Etching
- C30B33/12—Etching in gas atmosphere or plasma
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
- B24B37/042—Lapping machines or devices; Accessories designed for working plane surfaces operating processes therefor
- B24B37/044—Lapping machines or devices; Accessories designed for working plane surfaces operating processes therefor characterised by the composition of the lapping agent
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/956—Silicon carbide
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09G—POLISHING COMPOSITIONS; SKI WAXES
- C09G1/00—Polishing compositions
- C09G1/02—Polishing compositions containing abrasives or grinding agents
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1409—Abrasive particles per se
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1454—Abrasive powders, suspensions and pastes for polishing
- C09K3/1463—Aqueous liquid suspensions
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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
- C30B29/36—Carbides
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- 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
- C30B33/00—After-treatment of single crystals or homogeneous polycrystalline material with defined structure
- C30B33/08—Etching
- C30B33/10—Etching in solutions or melts
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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
- H01L21/02002—Preparing wafers
- H01L21/02005—Preparing bulk and homogeneous wafers
- H01L21/02008—Multistep processes
- H01L21/0201—Specific process step
- H01L21/02024—Mirror polishing
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- 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
- H01L21/02041—Cleaning
- H01L21/02043—Cleaning before device manufacture, i.e. Begin-Of-Line process
- H01L21/02052—Wet cleaning only
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- 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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/30625—With simultaneous mechanical treatment, e.g. mechanico-chemical polishing
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- 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
- H01L29/04—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their crystalline structure, e.g. polycrystalline, cubic or particular orientation of crystalline planes
- H01L29/045—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their crystalline structure, e.g. polycrystalline, cubic or particular orientation of crystalline planes by their particular orientation of crystalline planes
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- 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
- H01L29/16—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/30—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by physical imperfections; having polished or roughened surface
- H01L29/34—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by physical imperfections; having polished or roughened surface the imperfections being on the surface
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- 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
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/86—Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
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- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Weting (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
Description
ここで、従来の酸化剤の濃度レベルであっても、表面の平滑性を確保可能な酸化レートは達成される。しかし、従来のCMPにおける酸化レートでは、研磨剤による表層領域の除去に際して、炭化珪素基板に研磨剤によるダメージが導入される。このダメージは、主面の平滑性に与える影響は小さいものの、主面上に形成される半導体層の品質に影響を与える。このダメージは、上記塩素ガスによるエッチングにより線状エッチピット群として顕在化する。そして、CMPの研磨液に含まれる過マンガン酸イオンの濃度を従来よりも高いレベルの濃度、具体的には5質量%を超える濃度に設定することにより、酸化レートが高くなり、上記研磨剤によるダメージの導入が抑制される。
研磨剤を構成する金属酸化物としては、たとえばAl2O3(酸化アルミニウム)、Cr2O3(酸化クロム)、ZrO2(酸化ジルコニウム)などを採用することができる。
次に、本開示にかかる炭化珪素基板の一実施の形態を、以下に図面を参照しつつ説明する。なお、以下の図面において同一または相当する部分には同一の参照番号を付しその説明は繰返さない場合がある。
上記実施の形態と同様の手順において、CMPに用いる研磨液の過マンガン酸イオンの濃度を変化させて炭化珪素基板1を作製し、線状エッチピット群を観察する実験を行った。実験の手順は以下の通りである。
微分干渉顕微鏡で得られた情報からPLイメージングで得られた結晶欠陥の情報を差分することにより、線状エッチピット群が検出される。
図7に示されるように、線状エッチピット群の総長さとデバイスの不良率には関係が認められる。デバイスの作成には、直径が150mmの炭化珪素基板1が用いられた。炭化珪素基板1上にチップサイズ6mm角のMOSFET(Metal−Oxide−Semiconductor Field−Effect Transistor)デバイスが形成された。不良の判断は、ゲート電極とソース電極間に0Vから20Vまで電圧を印加したときに10nA以上のリーク電流が発生すること、あるいはゲート電極とソース電極間がショートし、電圧を印加できない状態になることである。
1A 主面
1B 主面
19 線状エッチピット群
50 研磨装置
51 定盤
51A 研磨面
51B 本体部
51C 軸部、
52 ホルダ
52A 保持面
52B 本体部
52C 軸部
53 研磨液供給部
91 研磨液
Claims (3)
- 炭化珪素からなり、
主面を塩素ガスでエッチングした場合に、前記主面に観察される線状エッチピット群の総長さが基板径以下であり、
前記基板径は150mmである、炭化珪素基板。 - 前記炭化珪素は六方晶の結晶構造を有し、
前記主面は、Si面に対するオフ角が8°未満の結晶面である、請求項1に記載の炭化珪素基板。 - 請求項1または2に記載の炭化珪素基板を用いる炭化珪素半導体装置の製造方法。
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Application Number | Priority Date | Filing Date | Title |
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JP2014240106 | 2014-11-27 | ||
JP2014240106 | 2014-11-27 | ||
JP2016561469A JP6699559B2 (ja) | 2014-11-27 | 2015-11-04 | 炭化珪素基板およびその製造方法、および炭化珪素半導体装置の製造方法 |
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JP2016561469A Division JP6699559B2 (ja) | 2014-11-27 | 2015-11-04 | 炭化珪素基板およびその製造方法、および炭化珪素半導体装置の製造方法 |
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JP2019178062A JP2019178062A (ja) | 2019-10-17 |
JP6939844B2 true JP6939844B2 (ja) | 2021-09-22 |
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JP6292926B2 (ja) * | 2013-11-08 | 2018-03-14 | 住友電気工業株式会社 | 炭化珪素半導体装置およびその製造方法 |
JP6585799B1 (ja) * | 2018-10-15 | 2019-10-02 | 昭和電工株式会社 | SiC基板の評価方法及びSiCエピタキシャルウェハの製造方法 |
WO2020203568A1 (ja) * | 2019-03-29 | 2020-10-08 | 株式会社フジミインコーポレーテッド | 研磨用組成物の製造方法および研磨方法 |
JP7494768B2 (ja) | 2021-03-16 | 2024-06-04 | 信越半導体株式会社 | 炭化珪素単結晶ウェーハの結晶欠陥評価方法 |
CN118043427A (zh) * | 2021-09-30 | 2024-05-14 | 福吉米株式会社 | 研磨用组合物 |
WO2023054385A1 (ja) * | 2021-09-30 | 2023-04-06 | 株式会社フジミインコーポレーテッド | 研磨用組成物 |
WO2023189512A1 (ja) * | 2022-03-30 | 2023-10-05 | 株式会社フジミインコーポレーテッド | 研磨用組成物 |
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JP4563609B2 (ja) * | 2000-04-07 | 2010-10-13 | Hoya株式会社 | 炭化珪素の製造方法 |
JP4427472B2 (ja) * | 2005-03-18 | 2010-03-10 | 新日本製鐵株式会社 | SiC単結晶基板の製造方法 |
US7998866B2 (en) * | 2006-09-05 | 2011-08-16 | Cabot Microelectronics Corporation | Silicon carbide polishing method utilizing water-soluble oxidizers |
JP5336699B2 (ja) | 2006-09-15 | 2013-11-06 | 株式会社ノリタケカンパニーリミテド | 結晶材料の研磨加工方法 |
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JP4853449B2 (ja) * | 2007-10-11 | 2012-01-11 | 住友金属工業株式会社 | SiC単結晶の製造方法、SiC単結晶ウエハ及びSiC半導体デバイス |
JP5358996B2 (ja) | 2008-03-26 | 2013-12-04 | 日立金属株式会社 | SiC単結晶基板の製造方法 |
CN101649162A (zh) * | 2008-08-15 | 2010-02-17 | 安集微电子(上海)有限公司 | 一种用于化学机械研磨的抛光液 |
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JP2012004270A (ja) * | 2010-06-16 | 2012-01-05 | Sumitomo Electric Ind Ltd | 炭化珪素半導体の洗浄方法、炭化珪素半導体および炭化珪素半導体装置 |
CN102533124A (zh) * | 2010-12-31 | 2012-07-04 | 上海硅酸盐研究所中试基地 | 碳化硅衬底用抛光液 |
JP2012248569A (ja) * | 2011-05-25 | 2012-12-13 | Asahi Glass Co Ltd | 研磨剤および研磨方法 |
EP2752508A4 (en) * | 2011-08-29 | 2015-02-25 | Nippon Steel & Sumitomo Metal Corp | SILICON CARBIDE CRYSTAL WAFERS AND MANUFACTURING METHOD THEREFOR |
JP2013247329A (ja) * | 2012-05-29 | 2013-12-09 | Mitsui Mining & Smelting Co Ltd | 研摩材スラリー |
CN102888193A (zh) * | 2012-06-25 | 2013-01-23 | 上海应用技术学院 | 一种led衬底片用的蓝宝石或碳化硅晶片的表面处理用的化学机械抛光液及其制备方法 |
JP2014024701A (ja) * | 2012-07-26 | 2014-02-06 | Sumitomo Electric Ind Ltd | 炭化珪素基板の製造方法 |
JP2014027093A (ja) * | 2012-07-26 | 2014-02-06 | Sumitomo Electric Ind Ltd | 炭化珪素基板の製造方法 |
JP2014210690A (ja) * | 2013-04-22 | 2014-11-13 | 住友電気工業株式会社 | 炭化珪素基板の製造方法 |
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US20180274129A1 (en) | 2018-09-27 |
CN110299403B (zh) | 2022-03-25 |
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CN110299403A (zh) | 2019-10-01 |
US20170335489A1 (en) | 2017-11-23 |
WO2016084561A1 (ja) | 2016-06-02 |
JP2019178062A (ja) | 2019-10-17 |
CN107002280A (zh) | 2017-08-01 |
JP6699559B2 (ja) | 2020-05-27 |
CN107002280B (zh) | 2019-06-18 |
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