JP2015196616A - SiC種結晶の加工変質層の除去方法、SiC種結晶及びSiC基板の製造方法 - Google Patents
SiC種結晶の加工変質層の除去方法、SiC種結晶及びSiC基板の製造方法 Download PDFInfo
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- 239000013078 crystal Substances 0.000 title claims abstract description 122
- 238000000034 method Methods 0.000 title claims abstract description 66
- 239000000758 substrate Substances 0.000 title claims description 27
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 6
- 238000000407 epitaxy Methods 0.000 claims abstract description 5
- 238000005530 etching Methods 0.000 claims description 46
- 238000010438 heat treatment Methods 0.000 claims description 30
- 230000007423 decrease Effects 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000001000 micrograph Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000009036 growth inhibition Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000004943 liquid phase epitaxy Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000007666 vacuum forming Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229910003468 tantalcarbide Inorganic materials 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
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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
- C30B19/00—Liquid-phase epitaxial-layer growth
- C30B19/12—Liquid-phase epitaxial-layer growth characterised by the substrate
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- C30B33/00—After-treatment of single crystals or homogeneous polycrystalline material with defined structure
- C30B33/08—Etching
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- C30B19/00—Liquid-phase epitaxial-layer growth
- C30B19/02—Liquid-phase epitaxial-layer growth using molten solvents, e.g. flux
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- 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
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- C30B33/00—After-treatment of single crystals or homogeneous polycrystalline material with defined structure
- C30B33/02—Heat treatment
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Abstract
Description
30 坩堝
40 SiC種結晶
41 Siプレート
42 炭素フィード基板
Claims (5)
- 準安定溶媒エピタキシー法の種結晶として用いられるSiC単結晶の、切断加工により生じた加工変質層を除去するための方法であって、
SiC種結晶の表面をSi雰囲気下で加熱することでエッチングするエッチング工程を含むことを特徴とするSiC種結晶の加工変質層の除去方法。 - 請求項1に記載のSiC種結晶の加工変質層の除去方法であって、
前記SiC種結晶は板状であり、
前記エッチング工程では、少なくとも前記SiC種結晶の厚み方向に平行な面がエッチングされることを特徴とするSiC種結晶の加工変質層の除去方法。 - 請求項1又は2に記載のSiC種結晶の加工変質層の除去方法であって、
前記エッチング工程のエッチング量が10μm以上であることを特徴とするSiC種結晶の加工変質層の除去方法。 - 請求項1から3までの何れか一項に記載のSiC種結晶の加工変質層の除去方法により加工変質層が除去されたSiC種結晶。
- 請求項1から3までの何れか一項に記載のSiC種結晶の加工変質層の除去方法で前記SiC種結晶の加工変質層を除去する除去工程と、
前記除去工程で前記加工変質層が除去された前記SiC種結晶を用いて、準安定溶媒エピタキシー法によりSiC単結晶を成長させる成長工程と、
を含むことを特徴とするSiC基板の製造方法。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014074742A JP6232329B2 (ja) | 2014-03-31 | 2014-03-31 | SiC種結晶の加工変質層の除去方法、SiC種結晶及びSiC基板の製造方法 |
PCT/JP2015/001302 WO2015151412A1 (ja) | 2014-03-31 | 2015-03-10 | SiC種結晶の加工変質層の除去方法、SiC種結晶及びSiC基板の製造方法 |
KR1020167022410A KR101893278B1 (ko) | 2014-03-31 | 2015-03-10 | SiC 종결정의 가공 변질층의 제거 방법, SiC 종결정, 및 SiC 기판의 제조 방법 |
CN201580009773.9A CN106029960B (zh) | 2014-03-31 | 2015-03-10 | SiC籽晶的加工变质层的除去方法、SiC籽晶和SiC基板的制造方法 |
US15/300,597 US20170114475A1 (en) | 2014-03-31 | 2015-03-10 | METHOD FOR REMOVING WORK-AFFECTED LAYER ON SiC SEED CRYSTAL, SiC SEED CRYSTAL, AND SiC SUBSTRATE MANUFACTURING METHOD |
EP15773120.9A EP3128047B1 (en) | 2014-03-31 | 2015-03-10 | Method for removing work-affected layer of sic seed crystal, and sic substrate manufacturing method |
TW104109741A TWI671438B (zh) | 2014-03-31 | 2015-03-26 | SiC(碳化矽)種晶之加工變質層的除去方法、SiC種晶及SiC基板之製造方法 |
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JP2014074742A JP6232329B2 (ja) | 2014-03-31 | 2014-03-31 | SiC種結晶の加工変質層の除去方法、SiC種結晶及びSiC基板の製造方法 |
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JP6232329B2 JP6232329B2 (ja) | 2017-11-15 |
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US (1) | US20170114475A1 (ja) |
EP (1) | EP3128047B1 (ja) |
JP (1) | JP6232329B2 (ja) |
KR (1) | KR101893278B1 (ja) |
CN (1) | CN106029960B (ja) |
TW (1) | TWI671438B (ja) |
WO (1) | WO2015151412A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018174105A1 (ja) * | 2017-03-22 | 2018-09-27 | 東洋炭素株式会社 | 改質SiCウエハの製造方法、エピタキシャル層付きSiCウエハ、その製造方法、及び表面処理方法 |
WO2018216657A1 (ja) * | 2017-05-25 | 2018-11-29 | 東洋炭素株式会社 | SiCウエハの製造方法、エピタキシャルウエハの製造方法、及びエピタキシャルウエハ |
WO2020022391A1 (ja) * | 2018-07-25 | 2020-01-30 | 株式会社デンソー | SiCウェハ及びSiCウェハの製造方法 |
JP2020017626A (ja) * | 2018-07-25 | 2020-01-30 | 株式会社デンソー | SiCウェハ及びSiCウェハの製造方法 |
JPWO2020179794A1 (ja) * | 2019-03-05 | 2020-09-10 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10388536B2 (en) * | 2014-11-18 | 2019-08-20 | Toyo Tanso Co., Ltd. | Etching method for SiC substrate and holding container |
JP6621304B2 (ja) * | 2015-11-10 | 2019-12-18 | 学校法人関西学院 | 半導体ウエハの製造方法 |
JP6949358B2 (ja) * | 2017-07-28 | 2021-10-13 | 学校法人関西学院 | 単結晶SiCの製造方法、SiCインゴットの製造方法、及びSiCウエハの製造方法 |
CN112930422A (zh) * | 2018-09-21 | 2021-06-08 | 东洋炭素株式会社 | 器件制作用晶圆的制造方法 |
WO2020241541A1 (ja) * | 2019-05-27 | 2020-12-03 | 昭和電工株式会社 | SiC単結晶インゴットの製造方法及びSiC改質シードの製造方法 |
US11932967B2 (en) | 2019-09-27 | 2024-03-19 | Kwansei Gakuin Educational Foundation | SiC single crystal manufacturing method, SiC single crystal manufacturing device, and SiC single crystal wafer |
US20220344152A1 (en) * | 2019-09-27 | 2022-10-27 | Kwansei Gakuin Educational Foundation | Method for manufacturing sic substrate |
Citations (2)
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WO2018174105A1 (ja) * | 2017-03-22 | 2018-09-27 | 東洋炭素株式会社 | 改質SiCウエハの製造方法、エピタキシャル層付きSiCウエハ、その製造方法、及び表面処理方法 |
JPWO2018174105A1 (ja) * | 2017-03-22 | 2020-01-30 | 東洋炭素株式会社 | 改質SiCウエハの製造方法、エピタキシャル層付きSiCウエハ、その製造方法、及び表面処理方法 |
JP7008063B2 (ja) | 2017-03-22 | 2022-01-25 | 東洋炭素株式会社 | 改質SiCウエハの製造方法及びエピタキシャル層付きSiCウエハの製造方法 |
US11261539B2 (en) | 2017-03-22 | 2022-03-01 | Toyo Tanso Co., Ltd. | Method for manufacturing reformed sic wafer, epitaxial layer-attached sic wafer, method for manufacturing same, and surface treatment method |
WO2018216657A1 (ja) * | 2017-05-25 | 2018-11-29 | 東洋炭素株式会社 | SiCウエハの製造方法、エピタキシャルウエハの製造方法、及びエピタキシャルウエハ |
WO2020022391A1 (ja) * | 2018-07-25 | 2020-01-30 | 株式会社デンソー | SiCウェハ及びSiCウェハの製造方法 |
JP2020017626A (ja) * | 2018-07-25 | 2020-01-30 | 株式会社デンソー | SiCウェハ及びSiCウェハの製造方法 |
JP7300248B2 (ja) | 2018-07-25 | 2023-06-29 | 株式会社デンソー | SiCウェハ及びSiCウェハの製造方法 |
JPWO2020179794A1 (ja) * | 2019-03-05 | 2020-09-10 | ||
WO2020179794A1 (ja) * | 2019-03-05 | 2020-09-10 | 学校法人関西学院 | SiC基板の製造方法及びその製造装置及びSiC基板の加工変質層を低減する方法 |
JP7464808B2 (ja) | 2019-03-05 | 2024-04-10 | 学校法人関西学院 | SiC基板の製造方法及びその製造装置及びSiC基板の加工変質層を低減する方法 |
US11972949B2 (en) | 2019-03-05 | 2024-04-30 | Kwansei Gakuin Educational Foundation | SiC substrate manufacturing method and manufacturing device, and method for reducing work-affected layer in sic substrate |
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EP3128047A4 (en) | 2017-04-26 |
TWI671438B (zh) | 2019-09-11 |
KR101893278B1 (ko) | 2018-08-29 |
EP3128047B1 (en) | 2018-09-26 |
JP6232329B2 (ja) | 2017-11-15 |
CN106029960B (zh) | 2019-07-09 |
KR20160111437A (ko) | 2016-09-26 |
WO2015151412A1 (ja) | 2015-10-08 |
US20170114475A1 (en) | 2017-04-27 |
EP3128047A1 (en) | 2017-02-08 |
CN106029960A (zh) | 2016-10-12 |
TW201606145A (zh) | 2016-02-16 |
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