JP5394632B2 - 単結晶SiC基板の製造方法 - Google Patents
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- 239000000758 substrate Substances 0.000 title claims description 106
- 239000013078 crystal Substances 0.000 title claims description 92
- 238000004519 manufacturing process Methods 0.000 title claims description 26
- 239000000463 material Substances 0.000 claims description 63
- 239000011521 glass Substances 0.000 claims description 37
- 150000002500 ions Chemical class 0.000 claims description 36
- 238000010438 heat treatment Methods 0.000 claims description 23
- 238000003763 carbonization Methods 0.000 claims description 20
- 239000004215 Carbon black (E152) Substances 0.000 claims description 17
- 229930195733 hydrocarbon Natural products 0.000 claims description 17
- 150000002430 hydrocarbons Chemical class 0.000 claims description 17
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 10
- 238000000151 deposition Methods 0.000 claims description 8
- 238000005468 ion implantation Methods 0.000 claims description 8
- 230000001133 acceleration Effects 0.000 claims description 6
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 130
- 229910010271 silicon carbide Inorganic materials 0.000 description 130
- 239000007789 gas Substances 0.000 description 30
- 238000000034 method Methods 0.000 description 22
- 239000010408 film Substances 0.000 description 11
- 238000012545 processing Methods 0.000 description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 239000011574 phosphorus Substances 0.000 description 6
- 239000000523 sample Substances 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000005304 joining Methods 0.000 description 4
- 239000005380 borophosphosilicate glass Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- UIUXUFNYAYAMOE-UHFFFAOYSA-N methylsilane Chemical compound [SiH3]C UIUXUFNYAYAMOE-UHFFFAOYSA-N 0.000 description 3
- 239000001294 propane Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- RGGPNXQUMRMPRA-UHFFFAOYSA-N triethylgallium Chemical compound CC[Ga](CC)CC RGGPNXQUMRMPRA-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000001947 vapour-phase growth Methods 0.000 description 1
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Description
上記埋め込みガラス層が形成されたSOI基板を炭化水素系ガス雰囲気中で加熱して上記表面Si層をSiCに変成させたのち冷却させて表面に単結晶SiC層を形成するSiC形成工程とを備え、
SiC形成工程において、SiC層とSi母材層の間の埋め込みガラス層を変形させ、Si母材層とSiC層の間に滑りを発生させ、炭化処理で形成されたSiC層とSi母材層の収縮率差を打ち消すことを第1の要旨とする。
上記Si母材とSi薄板をガラス層を挟むように接合し、Si母材層、表面Si層および埋め込みガラス層が積層された埋め込み型基板を形成する接合工程と、
上記埋め込み型基板を炭化水素系ガス雰囲気中で加熱して上記表面Si層をSiCに変成させたのち冷却させて表面に単結晶SiC層を形成するSiC形成工程とを備え、
SiC形成工程において、SiC層とSi母材層の間の埋め込みガラス層を変形させ、Si母材層とSiC層の間に滑りを発生させ、炭化処理で形成されたSiC層とSi母材層の収縮率差を打ち消すことを第2の要旨とする。
図1および図2は、本発明の第1実施形態の単結晶SiC基板の製造方法を示す図である。
(1)Si母材層2に所定厚さの表面Si層3と埋め込み酸化物層4が形成されたSOI(Silicon On Insulator)基板1に対し、上記表面Si層3側からPイオンを導入することにより、上記埋め込み酸化物層4を埋め込みガラス層であるPSG層6に変成させて軟化点を低下させるPイオン導入工程。
(2)上記埋め込みガラス層であるPSG層6が形成されたSOI基板1を炭化水素系ガス雰囲気中で加熱して上記表面Si層3をSiCに変成させたのち冷却させて表面に単結晶SiC層5を形成するSiC形成工程。
図4は、本発明の第2実施形態の単結晶SiC基板の製造方法を示す図である。
(1)Si母材と表面Si層となるSi薄板を接合する前に、その接合面となるSi母材と表面Si層の少なくとも一方の表面に、堆積法によって少なくともSiO2よりも軟化点が低いガラス層を形成するガラス層形成工程。
(2)上記Si母材とSi薄板をガラス層を挟むように接合し、Si母材層、表面Si層および埋め込みガラス層が積層された埋め込み型基板を形成する接合工程。
(3)上記埋め込み型基板を炭化水素系ガス雰囲気中で加熱して上記表面Si層をSiCに変成させたのち冷却させて表面に単結晶SiC層を形成するSiC形成工程。
2 Si母材層
3 表面Si層
4 埋め込み酸化物層,酸化物層
5 単結晶SiC層
6 PSG層
8 GaN層
Claims (6)
- Si母材層に所定厚さの表面Si層と埋め込み酸化物層が形成されたSOI基板に対し、上記表面Si層側からPイオンを導入することにより、上記埋め込み酸化物層を埋め込みガラス層に変成させて軟化点を低下させるPイオン導入工程と、
上記埋め込みガラス層が形成されたSOI基板を炭化水素系ガス雰囲気中で加熱して上記表面Si層をSiCに変成させたのち冷却させて表面に単結晶SiC層を形成するSiC形成工程とを備え、
SiC形成工程において、SiC層とSi母材層の間の埋め込みガラス層を変形させ、Si母材層とSiC層の間に滑りを発生させ、炭化処理で形成されたSiC層とSi母材層の収縮率差を打ち消すことを特徴とする単結晶SiC基板の製造方法。 - 上記Pイオン導入工程におけるPイオンの導入量は、1×1015〜5×1018個/cm2である請求項1記載の単結晶SiC基板の製造方法。
- 上記Pイオン導入工程における基板温度は、200〜550℃である請求項1または2記載の単結晶SiC基板の製造方法。
- 上記Pイオン導入工程をイオン注入によって行い、その際のPイオンの加速エネルギーが5〜30keVである請求項1〜3のいずれか一項に記載の単結晶SiC基板の製造方法。
- Si母材と表面Si層となるSi薄板を接合する前に、その接合面となるSi母材と表面Si層の少なくとも一方の表面に、堆積法によって少なくともSiO2よりも軟化点が低いガラス層を形成するガラス層形成工程と、
上記Si母材とSi薄板をガラス層を挟むように接合し、Si母材層、表面Si層および埋め込みガラス層が積層された埋め込み型基板を形成する接合工程と、
上記埋め込み型基板を炭化水素系ガス雰囲気中で加熱して上記表面Si層をSiCに変成させたのち冷却させて表面に単結晶SiC層を形成するSiC形成工程とを備え、
SiC形成工程において、SiC層とSi母材層の間の埋め込みガラス層を変形させ、Si母材層とSiC層の間に滑りを発生させ、炭化処理で形成されたSiC層とSi母材層の収縮率差を打ち消すことを特徴とする単結晶SiC基板の製造方法。 - 上記ガラス層におけるPイオンの量は、1×1015〜5×1018個/cm2である請求項5記載の単結晶SiC基板の製造方法。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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JP2007298752A JP5394632B2 (ja) | 2007-11-19 | 2007-11-19 | 単結晶SiC基板の製造方法 |
US12/742,413 US8603901B2 (en) | 2007-11-19 | 2008-10-29 | Method for producing single crystal SiC substrate and single crystal SiC substrate produced by the same |
PCT/JP2008/070160 WO2009066566A1 (ja) | 2007-11-19 | 2008-10-29 | 単結晶SiC基板の製造方法およびそれによって得られた単結晶SiC基板 |
KR1020107010827A KR101473209B1 (ko) | 2007-11-19 | 2008-10-29 | 단결정 SiC 기판의 제조 방법 및 이것에 의해서 얻어진 단결정 SiC 기판 |
EP08852872.4A EP2216428B8 (en) | 2007-11-19 | 2008-10-29 | PROCESS FOR PRODUCING SINGLE CRYSTAL SiC SUBSTRATE |
CN200880116838.XA CN101868566B (zh) | 2007-11-19 | 2008-10-29 | 单晶SiC基板的制造方法和由其得到的单晶SiC基板 |
US14/034,894 US8906786B2 (en) | 2007-11-19 | 2013-09-24 | Method for producing single crystal SiC substrate and single crystal SiC substrate produced by the same |
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JP2007298752A JP5394632B2 (ja) | 2007-11-19 | 2007-11-19 | 単結晶SiC基板の製造方法 |
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JP5394632B2 true JP5394632B2 (ja) | 2014-01-22 |
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US (2) | US8603901B2 (ja) |
EP (1) | EP2216428B8 (ja) |
JP (1) | JP5394632B2 (ja) |
KR (1) | KR101473209B1 (ja) |
CN (1) | CN101868566B (ja) |
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JP5394632B2 (ja) * | 2007-11-19 | 2014-01-22 | エア・ウォーター株式会社 | 単結晶SiC基板の製造方法 |
JP5572569B2 (ja) * | 2011-02-24 | 2014-08-13 | 信越半導体株式会社 | シリコン基板の製造方法及びシリコン基板 |
US9620626B2 (en) * | 2014-05-08 | 2017-04-11 | Soitec | Method for fabricating a semiconductor device including fin relaxation, and related structures |
JP6582779B2 (ja) | 2015-09-15 | 2019-10-02 | 信越化学工業株式会社 | SiC複合基板の製造方法 |
RU2613013C1 (ru) * | 2015-12-07 | 2017-03-14 | Федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский государственный электротехнический университет "ЛЭТИ" им. В.И. Ульянова (Ленина)" (СПбГЭТУ "ЛЭТИ") | Способ получения полупроводникового карбидокремниевого элемента |
DE102017101333B4 (de) | 2017-01-24 | 2023-07-27 | X-Fab Semiconductor Foundries Gmbh | Halbleiter und verfahren zur herstellung eines halbleiters |
US10510532B1 (en) * | 2018-05-29 | 2019-12-17 | Industry-University Cooperation Foundation Hanyang University | Method for manufacturing gallium nitride substrate using the multi ion implantation |
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JPH0475379A (ja) * | 1990-07-17 | 1992-03-10 | Seiko Epson Corp | 半導体基板 |
US5759908A (en) * | 1995-05-16 | 1998-06-02 | University Of Cincinnati | Method for forming SiC-SOI structures |
US20020089032A1 (en) * | 1999-08-23 | 2002-07-11 | Feng-Yi Huang | Processing method for forming dislocation-free silicon-on-insulator substrate prepared by implantation of oxygen |
JP3920103B2 (ja) | 2002-01-31 | 2007-05-30 | 大阪府 | 絶縁層埋め込み型半導体炭化シリコン基板の製造方法及びその製造装置 |
JP2004296558A (ja) * | 2003-03-26 | 2004-10-21 | Osaka Prefecture | 絶縁層埋め込み型単結晶炭化シリコン基板の製造方法及びその製造装置 |
JP4713089B2 (ja) | 2004-03-18 | 2011-06-29 | エア・ウォーター株式会社 | 単結晶SiC基板の製造方法 |
US20070278574A1 (en) * | 2006-05-30 | 2007-12-06 | Sharp Laboratories Of America, Inc. | Compound semiconductor-on-silicon wafer with a thermally soft insulator |
JP5394632B2 (ja) * | 2007-11-19 | 2014-01-22 | エア・ウォーター株式会社 | 単結晶SiC基板の製造方法 |
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US8906786B2 (en) | 2014-12-09 |
EP2216428B8 (en) | 2017-08-16 |
EP2216428B1 (en) | 2017-06-07 |
US20140051235A1 (en) | 2014-02-20 |
US8603901B2 (en) | 2013-12-10 |
EP2216428A4 (en) | 2012-08-15 |
KR20100100803A (ko) | 2010-09-15 |
CN101868566B (zh) | 2012-07-18 |
US20100252837A1 (en) | 2010-10-07 |
JP2009120455A (ja) | 2009-06-04 |
EP2216428A1 (en) | 2010-08-11 |
KR101473209B1 (ko) | 2014-12-16 |
WO2009066566A1 (ja) | 2009-05-28 |
CN101868566A (zh) | 2010-10-20 |
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