JP2009272633A - エピタキシャル被覆された半導体ウェハの製造方法 - Google Patents
エピタキシャル被覆された半導体ウェハの製造方法 Download PDFInfo
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- JP2009272633A JP2009272633A JP2009112411A JP2009112411A JP2009272633A JP 2009272633 A JP2009272633 A JP 2009272633A JP 2009112411 A JP2009112411 A JP 2009112411A JP 2009112411 A JP2009112411 A JP 2009112411A JP 2009272633 A JP2009272633 A JP 2009272633A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 103
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000005229 chemical vapour deposition Methods 0.000 claims abstract description 8
- 238000000151 deposition Methods 0.000 claims description 26
- 230000008021 deposition Effects 0.000 claims description 23
- 238000000576 coating method Methods 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 7
- 238000000407 epitaxy Methods 0.000 abstract description 3
- 235000012431 wafers Nutrition 0.000 description 149
- 230000035882 stress Effects 0.000 description 33
- 239000007789 gas Substances 0.000 description 17
- 239000010410 layer Substances 0.000 description 17
- 238000005259 measurement Methods 0.000 description 17
- 230000002093 peripheral effect Effects 0.000 description 13
- 238000001816 cooling Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 12
- 238000005498 polishing Methods 0.000 description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000010926 purge Methods 0.000 description 9
- 229910052710 silicon Inorganic materials 0.000 description 9
- 239000010703 silicon Substances 0.000 description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 239000002019 doping agent Substances 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- 230000007717 exclusion Effects 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 125000001475 halogen functional group Chemical group 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- 229910010271 silicon carbide Inorganic materials 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 3
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
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- 230000028161 membrane depolarization Effects 0.000 description 2
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 2
- 239000002210 silicon-based material Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000002144 chemical decomposition reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010330 laser marking Methods 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
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- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 description 1
- 239000005052 trichlorosilane Substances 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 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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- 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
- H01L21/02524—Group 14 semiconducting materials
- H01L21/02532—Silicon, silicon germanium, germanium
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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
-
- 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
- C30B25/10—Heating of the reaction chamber or the substrate
-
- 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
- C30B29/02—Elements
- C30B29/06—Silicon
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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
- C30B33/00—After-treatment of single crystals or homogeneous polycrystalline material with defined structure
- C30B33/02—Heat treatment
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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
- H01L21/02104—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
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- 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
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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
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- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
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- 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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/324—Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
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- Crystallography & Structural Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Chemical Vapour Deposition (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
【解決手段】少なくとも前面がポリシングされた半導体ウェハを準備し、枚葉式エピタキシャル反応器中のサセプタに裁置し、1000〜1200℃の温度で化学気相蒸着によりエピタキシャル層をポリシングされた前面に設けることにより被覆するエピタキシャル被覆させた半導体ウェハの製造方法において、エピタキシャル被覆が行われた後に、前記半導体ウェハを1200〜900℃の温度範囲で、1秒あたり5℃より低い速度で冷却する、エピタキシャル被覆させた半導体ウェハの製造方法
【選択図】なし
Description
Claims (9)
- 少なくとも前面がポリシングされた半導体ウェハを準備し、枚葉式エピタキシャル反応器中のサセプタに裁置し、1000〜1200℃の温度で化学気相蒸着によりエピタキシャル層をポリシングされた前面に設けることにより被覆するエピタキシャル被覆させた半導体ウェハの製造方法において、エピタキシャル被覆が行われた後に、前記半導体ウェハを1200〜900℃の温度範囲で、1秒あたり5℃より低い速度で冷却する、エピタキシャル被覆させた半導体ウェハの製造方法。
- 半導体ウェハを、1200〜900℃の温度範囲内で、1秒あたり3℃以下の速度で冷却する、請求項1記載の方法。
- 半導体ウェハを、1200〜1000℃の温度範囲内で、1秒あたり1.5℃以下の速度で冷却する、請求項2記載の方法。
- 半導体ウェハを、900℃の温度の達成後に、1秒あたり5℃以上の速度で冷却する、請求項1から3までのいずれか1項記載の方法。
- 少なくとも前面がポリシングされた半導体ウェハを準備し、枚葉式エピタキシャル反応器中のサセプタに裁置し、1000〜1200℃の堆積温度で化学気相蒸着によりエピタキシャル層をポリシングされた前面に設けることにより被覆するエピタキシャル被覆させた半導体ウェハの製造方法において、エピタキシャル被覆が行われた後に堆積温度で前記半導体ウェハを1〜60秒間持ち上げて、堆積された半導体材料により生じたサセプタとウェハとの間の結合を、前記ウェハが冷却される前に裂開することを保障する、エピタキシャル被覆させた半導体ウェハの製造方法。
- エピタキシャル被覆が行われ、かつ前記半導体ウェハが短時間持ち上げられた後に、前記半導体ウェハを1200℃〜900℃の温度範囲で1秒あたり5℃より低い速度で冷却する、請求項5記載の方法。
- 半導体ウェハを、1200〜900℃の温度範囲内で、1秒あたり3℃以下の速度で冷却する、請求項6記載の方法。
- 半導体ウェハを、1200〜1000℃の温度範囲内で、1秒あたり1.5℃以下の速度で冷却する、請求項7記載の方法。
- 半導体ウェハを、900℃の温度の達成後に、1秒あたり5℃以上の速度で冷却する、請求項5から8までのいずれか1項記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102008023054.5 | 2008-05-09 | ||
DE102008023054A DE102008023054B4 (de) | 2008-05-09 | 2008-05-09 | Verfahren zur Herstellung einer epitaxierten Halbleiterscheibe |
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JP2011255155A Division JP5264977B2 (ja) | 2008-05-09 | 2011-11-22 | エピタキシャル被覆された半導体ウェハの製造方法 |
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JP2009272633A true JP2009272633A (ja) | 2009-11-19 |
JP5232719B2 JP5232719B2 (ja) | 2013-07-10 |
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JP2009112411A Active JP5232719B2 (ja) | 2008-05-09 | 2009-05-07 | エピタキシャル被覆された半導体ウェハの製造方法 |
JP2011255155A Active JP5264977B2 (ja) | 2008-05-09 | 2011-11-22 | エピタキシャル被覆された半導体ウェハの製造方法 |
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Country Status (7)
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US (1) | US9240316B2 (ja) |
JP (2) | JP5232719B2 (ja) |
KR (1) | KR101291918B1 (ja) |
CN (2) | CN101575701B (ja) |
DE (1) | DE102008023054B4 (ja) |
SG (3) | SG175675A1 (ja) |
TW (1) | TWI431172B (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20200015763A (ko) * | 2017-07-26 | 2020-02-12 | 실트로닉 아게 | 단결정 실리콘의 에피택셜하게 코팅된 반도체 웨이퍼 및 그 제조방법 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5544859B2 (ja) | 2009-12-15 | 2014-07-09 | 信越半導体株式会社 | シリコンエピタキシャルウェーハの製造方法 |
DE102011007682A1 (de) * | 2011-04-19 | 2012-10-25 | Siltronic Ag | Suszeptor zum Abstützen einer Halbleiterscheibe und Verfahren zum Abscheiden einer Schicht auf einer Vorderseite einer Halbleiterscheibe |
DE102012202099A1 (de) * | 2012-02-13 | 2013-08-14 | Siltronic Ag | Verfahren zum Abkühlen von Scheiben aus Halbleitermaterial |
DE102017206671A1 (de) * | 2017-04-20 | 2018-10-25 | Siltronic Ag | Suszeptor zum Halten einer Halbleiterscheibe mit Orientierungskerbe während des Abscheidens einer Schicht auf einer Vorderseite der Halbleiterscheibe und Verfahren zum Abscheiden der Schicht unter Verwendung des Suszeptors |
CN109904058B (zh) * | 2017-12-11 | 2021-01-08 | 有研半导体材料有限公司 | 一种降低硅抛光片正面边缘损伤的方法 |
DE102018221605A1 (de) * | 2018-12-13 | 2020-06-18 | Siltronic Ag | Verfahren zur Herstellung einer epitaxierten Halbleiterscheibe |
JP6761917B1 (ja) * | 2019-11-29 | 2020-09-30 | Jx金属株式会社 | リン化インジウム基板、半導体エピタキシャルウエハ、及びリン化インジウム基板の製造方法 |
KR102192518B1 (ko) | 2020-07-14 | 2020-12-17 | 에스케이씨 주식회사 | 웨이퍼 및 웨이퍼의 제조방법 |
CN112002639A (zh) * | 2020-07-21 | 2020-11-27 | 上海新昇半导体科技有限公司 | 一种外延晶圆的制造方法和外延晶圆 |
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JPS63271922A (ja) * | 1987-04-28 | 1988-11-09 | Matsushita Electric Ind Co Ltd | 熱処理装置 |
JPH03136320A (ja) * | 1989-10-23 | 1991-06-11 | Fujitsu Ltd | 半導体装置の製造方法 |
JPH0645250A (ja) * | 1992-07-23 | 1994-02-18 | Nec Corp | 気相成長装置 |
JP2000269143A (ja) * | 1999-03-17 | 2000-09-29 | Japan Energy Corp | 窒化ガリウム系化合物半導体結晶の製造方法 |
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JPS6325916A (ja) * | 1986-07-17 | 1988-02-03 | Sharp Corp | 気相成長装置 |
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Cited By (5)
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KR20200015763A (ko) * | 2017-07-26 | 2020-02-12 | 실트로닉 아게 | 단결정 실리콘의 에피택셜하게 코팅된 반도체 웨이퍼 및 그 제조방법 |
JP2020529127A (ja) * | 2017-07-26 | 2020-10-01 | ジルトロニック アクチエンゲゼルシャフトSiltronic AG | 単結晶シリコンのエピタキシャル被覆半導体ウェハおよびその製造方法 |
KR102320760B1 (ko) | 2017-07-26 | 2021-11-01 | 실트로닉 아게 | 단결정 실리콘의 에피택셜하게 코팅된 반도체 웨이퍼 및 그 제조방법 |
JP7059351B2 (ja) | 2017-07-26 | 2022-04-25 | ジルトロニック アクチエンゲゼルシャフト | 単結晶シリコンのエピタキシャル被覆半導体ウェハの製造方法 |
US11578424B2 (en) | 2017-07-26 | 2023-02-14 | Siltronic Ag | Epitaxially coated semiconductor wafer of monocrystalline silicon and method for production thereof |
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Publication number | Publication date |
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JP5264977B2 (ja) | 2013-08-14 |
TWI431172B (zh) | 2014-03-21 |
US20090277376A1 (en) | 2009-11-12 |
CN102174692A (zh) | 2011-09-07 |
CN101575701B (zh) | 2014-09-24 |
DE102008023054A1 (de) | 2009-11-19 |
CN102174692B (zh) | 2016-03-09 |
JP5232719B2 (ja) | 2013-07-10 |
US9240316B2 (en) | 2016-01-19 |
DE102008023054B4 (de) | 2011-12-22 |
SG175675A1 (en) | 2011-11-28 |
JP2012074719A (ja) | 2012-04-12 |
KR20090117610A (ko) | 2009-11-12 |
SG157279A1 (en) | 2009-12-29 |
KR101291918B1 (ko) | 2013-07-31 |
CN101575701A (zh) | 2009-11-11 |
TW200946723A (en) | 2009-11-16 |
SG191564A1 (en) | 2013-07-31 |
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