JP6248532B2 - 3C−SiCエピタキシャル層の製造方法、3C−SiCエピタキシャル基板および半導体装置 - Google Patents
3C−SiCエピタキシャル層の製造方法、3C−SiCエピタキシャル基板および半導体装置 Download PDFInfo
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- 239000000758 substrate Substances 0.000 claims description 101
- 239000013078 crystal Substances 0.000 claims description 34
- 230000007547 defect Effects 0.000 claims description 28
- 230000003647 oxidation Effects 0.000 claims description 18
- 238000007254 oxidation reaction Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 6
- 238000010000 carbonizing Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000001039 wet etching Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 13
- 238000003763 carbonization Methods 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 238000000038 ultrahigh vacuum chemical vapour deposition Methods 0.000 description 5
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- CRSOQBOWXPBRES-UHFFFAOYSA-N neopentane Chemical compound CC(C)(C)C CRSOQBOWXPBRES-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000001282 iso-butane Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 238000001451 molecular beam epitaxy Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N sec-butylidene Natural products CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910003902 SiCl 4 Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- SLLGVCUQYRMELA-UHFFFAOYSA-N chlorosilicon Chemical compound Cl[Si] SLLGVCUQYRMELA-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- BUMGIEFFCMBQDG-UHFFFAOYSA-N dichlorosilicon Chemical compound Cl[Si]Cl BUMGIEFFCMBQDG-UHFFFAOYSA-N 0.000 description 1
- UBHZUDXTHNMNLD-UHFFFAOYSA-N dimethylsilane Chemical compound C[SiH2]C UBHZUDXTHNMNLD-UHFFFAOYSA-N 0.000 description 1
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- UIUXUFNYAYAMOE-UHFFFAOYSA-N methylsilane Chemical compound [SiH3]C UIUXUFNYAYAMOE-UHFFFAOYSA-N 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- LXEXBJXDGVGRAR-UHFFFAOYSA-N trichloro(trichlorosilyl)silane Chemical compound Cl[Si](Cl)(Cl)[Si](Cl)(Cl)Cl LXEXBJXDGVGRAR-UHFFFAOYSA-N 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
- PQDJYEQOELDLCP-UHFFFAOYSA-N trimethylsilane Chemical compound C[SiH](C)C PQDJYEQOELDLCP-UHFFFAOYSA-N 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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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
- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
- C30B25/02—Epitaxial-layer growth
- C30B25/18—Epitaxial-layer growth characterised by the substrate
- C30B25/183—Epitaxial-layer growth characterised by the substrate being provided with a buffer layer, e.g. a lattice matching layer
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- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
- C30B25/02—Epitaxial-layer growth
- C30B25/18—Epitaxial-layer growth characterised by the substrate
- C30B25/186—Epitaxial-layer growth characterised by the substrate being specially pre-treated by, e.g. chemical or physical means
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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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- H10D62/832—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group IV materials, e.g. B-doped Si or undoped Ge being Group IV materials comprising two or more elements, e.g. SiGe
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Description
この製造方法によれば、基板の反りを低減し、かつ結晶品質を向上させた3C−SiCエピタキシャル層を形成することができる。
このエピタキシャル基板によれば、作製されるデバイスの特性を向上させることができる。
Claims (9)
- Si基板上を炭化処理してバッファー層を形成する工程と、
前記バッファー層上に、上方に向けて密度が小さくなる結晶欠陥を有する第1の3C−SiC層をエピタキシャル成長させる工程と、
前記第1の3C−SiC層の酸化をする工程と、
前記第1の3C−SiC層中の結晶欠陥に沿って形成された酸化膜を残した状態で、前記第1の3C−SiC層表面の酸化膜を除去する工程と、
前記酸化膜の除去後、前記第1の3C−SiC層上に第2の3C−SiC層をエピタキシャル成長させる工程と
を有する3C−SiCエピタキシャル層の製造方法。 - 前記酸化は、1100〜1200℃の熱酸化により行われる
ことを特徴とする請求項1に記載の3C−SiCエピタキシャル層の製造方法。 - 前記熱酸化は、酸素雰囲気で行われる
ことを特徴とする請求項2に記載の3C−SiCエピタキシャル層の製造方法。 - 前記熱酸化は、酸素および水蒸気雰囲気で行われる
ことを特徴とする請求項2に記載の3C−SiCエピタキシャル層の製造方法。 - 前記酸化膜の除去は、ウェットエッチングにより行われる
ことを特徴とする請求項1に記載の3C−SiCエピタキシャル層の製造方法。 - 前記Si基板は、Si(100)基板である
ことを特徴とする請求項1ないし5のいずれか一項に記載の3C−SiCエピタキシャル層の製造方法。 - Si基板と、
前記Si基板の一部を炭化処理して形成されたバッファー層と、
前記バッファー層上に形成され、上方に向けて密度が小さくなる結晶欠陥を有する第1の3C−SiCエピタキシャル層と、
前記第1の3C−SiCエピタキシャル層上に形成された第2の3C−SiCエピタキシャル層と、
前記第1の3C−SiCエピタキシャル層中の結晶欠陥に沿って形成された酸化膜と
を有する3C−SiCエピタキシャル基板。 - 前記バッファー層は、格子定数がSiより小さく3C−SiCより大きい立方晶系の材料で形成される
ことを特徴とする請求項7に記載の3C−SiCエピタキシャル基板。 - 請求項7または8に記載の3C−SiCエピタキシャル基板を用いた半導体装置。
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JP2013216306A JP6248532B2 (ja) | 2013-10-17 | 2013-10-17 | 3C−SiCエピタキシャル層の製造方法、3C−SiCエピタキシャル基板および半導体装置 |
US14/514,993 US9758902B2 (en) | 2013-10-17 | 2014-10-15 | Method for producing 3C-SiC epitaxial layer, 3C-SiC epitaxial substrate, and semiconductor device |
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JP2013216306A JP6248532B2 (ja) | 2013-10-17 | 2013-10-17 | 3C−SiCエピタキシャル層の製造方法、3C−SiCエピタキシャル基板および半導体装置 |
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JP2015078093A JP2015078093A (ja) | 2015-04-23 |
JP2015078093A5 JP2015078093A5 (ja) | 2016-10-06 |
JP6248532B2 true JP6248532B2 (ja) | 2017-12-20 |
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KR102203025B1 (ko) * | 2014-08-06 | 2021-01-14 | 엘지이노텍 주식회사 | 탄화규소 에피 웨이퍼 제조 방법 |
GB2534357B (en) * | 2015-01-14 | 2020-02-19 | Anvil Semiconductors Ltd | Wafer bow reduction |
JP6592961B2 (ja) | 2015-05-19 | 2019-10-23 | セイコーエプソン株式会社 | 炭化ケイ素基板および炭化ケイ素基板の製造方法 |
CN107465983B (zh) * | 2016-06-03 | 2021-06-04 | 无锡华润上华科技有限公司 | Mems麦克风及其制备方法 |
KR102681366B1 (ko) * | 2018-11-14 | 2024-07-05 | 주식회사 엘엑스세미콘 | 탄화규소 에피 웨이퍼 |
CN116525420B (zh) * | 2023-06-09 | 2023-12-19 | 中电科先进材料技术创新有限公司 | 在硅片表面生长3C-SiC薄层的方法及3C-SiC层 |
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GB2495949B (en) * | 2011-10-26 | 2015-03-11 | Anvil Semiconductors Ltd | Silicon carbide epitaxy |
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