JP2006290677A - 窒化物系化合物半導体結晶の製造方法及び窒化物系化合物半導体基板の製造方法 - Google Patents
窒化物系化合物半導体結晶の製造方法及び窒化物系化合物半導体基板の製造方法 Download PDFInfo
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- 239000013078 crystal Substances 0.000 title claims abstract description 138
- 239000000758 substrate Substances 0.000 title claims abstract description 116
- 239000004065 semiconductor Substances 0.000 title claims abstract description 87
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 56
- 150000004767 nitrides Chemical class 0.000 title claims description 48
- 150000001875 compounds Chemical class 0.000 title claims description 47
- -1 nitride compound Chemical class 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims description 52
- 238000001947 vapour-phase growth Methods 0.000 claims description 8
- 150000004678 hydrides Chemical class 0.000 claims description 2
- 229910002601 GaN Inorganic materials 0.000 description 38
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 24
- 238000002248 hydride vapour-phase epitaxy Methods 0.000 description 16
- 239000010408 film Substances 0.000 description 8
- 229910052594 sapphire Inorganic materials 0.000 description 8
- 239000010980 sapphire Substances 0.000 description 8
- 238000002441 X-ray diffraction Methods 0.000 description 7
- XOYLJNJLGBYDTH-UHFFFAOYSA-M chlorogallium Chemical compound [Ga]Cl XOYLJNJLGBYDTH-UHFFFAOYSA-M 0.000 description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 6
- 238000005498 polishing Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000010453 quartz Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000007517 polishing process Methods 0.000 description 2
- XCZXGTMEAKBVPV-UHFFFAOYSA-N trimethylgallium Chemical compound C[Ga](C)C XCZXGTMEAKBVPV-UHFFFAOYSA-N 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- RNQKDQAVIXDKAG-UHFFFAOYSA-N aluminum gallium Chemical compound [Al].[Ga] RNQKDQAVIXDKAG-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- NWAIGJYBQQYSPW-UHFFFAOYSA-N azanylidyneindigane Chemical compound [In]#N NWAIGJYBQQYSPW-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000005092 sublimation method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000000927 vapour-phase epitaxy Methods 0.000 description 1
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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
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- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
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Abstract
【解決手段】 種結晶として、両面が研磨された窒化物系化合物半導体基板を用いて結晶成長を行うことにより、所定厚さの窒化物系化合物半導体結晶を製造する。これにより作製された窒化物系化合物半導体結晶をスライスすることで、窒化物系化合物半導体基板を得る。
【選択図】 図1
Description
[実施例1]
[実施例2]
[比較例]
2 ヒータ
3 NH3導入管
4 HCl導入管
5 Gaソースボート
6 金属Ga
7 GaCl導入管
8 結晶回転軸
9 種基板
10 排気口
11 レーザ光源
12 レーザ光
13 検出器
14 コンピュータ
15 アクチュエータ
Claims (14)
- 窒化物系化合物半導体基板を種結晶として用い、結晶成長を行うことによって所定厚さの窒化物系化合物半導体結晶を製造する方法において、
種結晶として、両面が研磨された窒化物系化合物半導体基板を用いることを特徴とする窒化物系化合物半導体結晶の製造方法。 - 請求項1記載の窒化物系化合物半導体結晶の製造方法において、
上記種結晶として、貫通転位密度が1×107cm-2以下の窒化物系化合物半導体基板を用いることを特徴とする窒化物系化合物半導体結晶の製造方法。 - 請求項1又は2記載の窒化物系化合物半導体結晶の製造方法において、
上記種結晶として、結晶軸のばらつきが0.5度以下である窒化物系化合物半導体基板を用いることを特徴とする窒化物系化合物半導体結晶の製造方法。 - 請求項1又は2記載の窒化物系化合物半導体結晶の製造方法において、
上記種結晶として、反りが力学的に矯正された窒化物系化合物半導体基板を用いることを特徴とする窒化物系化合物半導体結晶の製造方法。 - 請求項1又は2記載の窒化物系化合物半導体結晶の製造方法において、
上記種結晶として、残留応力が100MPa以下である窒化物系化合物半導体基板を用いることを特徴とする窒化物系化合物半導体結晶の製造方法。 - 請求項1〜5のいずれかに記載の窒化物系化合物半導体結晶の製造方法において、
上記種結晶よりも、成長する窒化物系化合物半導体結晶の口径を拡大することを特徴とする窒化物系化合物半導体結晶の製造方法。 - 請求項6記載の窒化物系化合物半導体結晶の製造方法において、
上記種結晶の2倍以上に、成長する窒化物系化合物半導体結晶の口径を拡大することを特徴とする窒化物系化合物半導体結晶の製造方法。 - 請求項1〜7のいずれかに記載の窒化物系化合物半導体結晶の製造方法において、
上記結晶成長を気相成長法によって行うことを特徴とする窒化物系化合物半導体結晶の製造方法。 - 請求項8記載の窒化物系化合物半導体結晶の製造方法において、
上記気相成長法としてハイドライド気相成長法を用いることを特徴とする窒化物系化合物半導体結晶の製造方法。 - 請求項1〜9のいずれかに記載の窒化物系化合物半導体結晶の製造方法において、
製造する窒化物系化合物半導体結晶の成長速度と同じ速度で、当該窒化物系化合物半導体結晶の位置を後退させ、炉内での成長面を常に同じ位置に保つことを特徴とする窒化物系化合物半導体結晶の製造方法。 - 請求項9記載の窒化物系化合物半導体結晶の製造方法において、
成長する窒化物系化合物半導体結晶の成長速度が350μm/h以上であることを特徴とする窒化物系化合物半導体結晶の製造方法。 - 請求項1〜11に記載の方法で作製された窒化物系化合物半導体結晶をスライスすることを特徴とする窒化物系化合物半導体基板の製造方法。
- 請求項1〜11に記載の方法で作製された窒化物系化合物半導体結晶を円筒形に整形した後に、オリエンテーションフラットを形成し、その後にスライスすることを特徴とする窒化物系化合物半導体基板の製造方法。
- 請求項13記載の窒化物系化合物半導体基板の製造方法において、
2箇所以上のオリエンテーションフラットを形成することを特徴とする窒化物系化合物半導体基板の製造方法。
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2008059901A1 (en) * | 2006-11-14 | 2008-05-22 | Osaka University | PROCESS FOR PRODUCTION OF GaN CRYSTALS, GaN CRYSTALS, GaN CRYSTAL SUBSTRATE, SEMICONDUCTOR DEVICES, AND APPARATUS FOR PRODUCTION OF GaN CRYSTALS |
JP2008127252A (ja) * | 2006-11-22 | 2008-06-05 | Hitachi Cable Ltd | 窒化物半導体インゴット及びこれから得られる窒化物半導体基板並びに窒化物半導体インゴットの製造方法 |
JP2012136414A (ja) * | 2010-12-01 | 2012-07-19 | Mitsubishi Chemicals Corp | Iii族窒化物半導体基板、半導体発光デバイスおよびその製造方法 |
US8545626B2 (en) | 2008-03-03 | 2013-10-01 | Mitsubishi Chemical Corporation | Nitride semiconductor crystal and its production method |
US9991671B2 (en) | 2015-09-11 | 2018-06-05 | Nichia Corporation | Method for producing semiconductor laser element |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP4849296B2 (ja) | 2005-04-11 | 2012-01-11 | 日立電線株式会社 | GaN基板 |
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