JP6253150B2 - エピタキシャルウエハ及びその製造方法 - Google Patents
エピタキシャルウエハ及びその製造方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 34
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000013078 crystal Substances 0.000 claims description 110
- 229910005191 Ga 2 O 3 Inorganic materials 0.000 claims description 89
- 239000000758 substrate Substances 0.000 claims description 75
- 239000004065 semiconductor Substances 0.000 claims description 58
- 238000002248 hydride vapour-phase epitaxy Methods 0.000 claims 2
- 239000007789 gas Substances 0.000 description 71
- XOYLJNJLGBYDTH-UHFFFAOYSA-M chlorogallium Chemical compound [Ga]Cl XOYLJNJLGBYDTH-UHFFFAOYSA-M 0.000 description 15
- 238000010438 heat treatment Methods 0.000 description 12
- 238000011156 evaluation Methods 0.000 description 10
- 239000002994 raw material Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- UPWPDUACHOATKO-UHFFFAOYSA-K gallium trichloride Chemical compound Cl[Ga](Cl)Cl UPWPDUACHOATKO-UHFFFAOYSA-K 0.000 description 8
- 239000002019 doping agent Substances 0.000 description 7
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 6
- 229910052733 gallium Inorganic materials 0.000 description 6
- 238000001947 vapour-phase growth Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000012159 carrier gas Substances 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229910052738 indium Inorganic materials 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- 238000001451 molecular beam epitaxy Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 238000005231 Edge Defined Film Fed Growth Methods 0.000 description 2
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229920001940 conductive polymer Polymers 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 description 2
- 229940005642 polystyrene sulfonic acid Drugs 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- BGPPUXMKKQMWLV-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-methoxy-6-nitrobenzene Chemical compound COC1=C(Cl)C(Cl)=C([N+]([O-])=O)C(Cl)=C1Cl BGPPUXMKKQMWLV-UHFFFAOYSA-N 0.000 description 1
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- -1 ITO Chemical class 0.000 description 1
- 229910003902 SiCl 4 Inorganic materials 0.000 description 1
- 101100480797 Trypanosoma cruzi TCNA gene Proteins 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 1
- 239000005049 silicon tetrachloride Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000000927 vapour-phase epitaxy Methods 0.000 description 1
- 229910052725 zinc 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
- 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
- C30B25/20—Epitaxial-layer growth characterised by the substrate the substrate being of the same materials as the epitaxial layer
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
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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
- 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
- C30B29/16—Oxides
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- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02367—Substrates
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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/04—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their crystalline structure, e.g. polycrystalline, cubic or particular orientation of crystalline planes
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
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- General Chemical & Material Sciences (AREA)
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- Crystals, And After-Treatments Of Crystals (AREA)
- Chemical Vapour Deposition (AREA)
Description
(結晶積層構造体の構成)
図1は、第1の実施の形態に係るエピタキシャルウエハ10の垂直断面図である。エピタキシャルウエハ10は、半導体基板11と、半導体基板11の主面上にHVPE(Halide Vapor Phase Epitaxy)法によるエピタキシャル結晶成長により形成されたエピタキシャル層12を有する。
以下に、本実施の形態に係るエピタキシャル層12の成長に用いる気相成長装置の構造の一例について説明する。
以下に、本実施の形態に係るエピタキシャル層12の成長工程の一例について説明する。
以下に、半導体基板11の主面の面方位と、エピタキシャル層12の成長レートの関係の評価結果を示す。この評価は、(010)面である主面にラインアンドスペースパターンの凹凸が形成されたβ−Ga2O3単結晶基板を用いて行った。
第2の実施の形態は、第1の実施の形態に係るエピタキシャルウエハ10を含む半導体素子についての形態である。この半導体素子の一例として、いかに、MESFET(Metal Semiconductor Field Effect Transistor)構造を有する横型トランジスタについて説明する。
図8は、第2の実施の形態に係る横型トランジスタ40の垂直断面図である。横型トランジスタ40は、半導体基板11上に形成されたエピタキシャル層12と、エピタキシャル層12上のゲート電極41、ソース電極42、及びドレイン電極43を含む。ゲート電極41は、ソース電極42とドレイン電極43との間に配置される。
上記実施の形態によれば、HVPE法によりβ−Ga2O3単結晶からなるエピタキシャル層を高い成長レートで成長させることができるβ−Ga2O3単結晶からなる半導体基板を提供することができる。
Claims (9)
- HVPE法によるエピタキシャル結晶成長用の下地基板として用いられる半導体基板であって、β−Ga 2 O 3 系単結晶からなり、β−Ga 2 O 3 系単結晶の[010]軸に平行な面を主面とする半導体基板と、
前記半導体基板の前記主面上の5×1016(atoms/cm3)以下のClを含むβ−Ga2O3系単結晶からなるエピタキシャル層と、
を有するエピタキシャルウエハ。 - 前記主面が、β−Ga 2 O 3 系単結晶の[010]軸を回転軸として(100)面から(101)面へ向かう方向に38°以上90°以下の範囲内の角度で回転させた面である、
請求項1に記載のエピタキシャルウエハ。 - 前記角度が、68±10°である、
請求項2に記載のエピタキシャルウエハ。 - 前記角度が、38±1°、53.8±1°、68±1°、76.3±1°、77.3±
1°、83±1°、又は90±1°である、
請求項2に記載のエピタキシャルウエハ。 - β−Ga2O3系単結晶からなり、β−Ga2O3系単結晶の[010]軸に平行な面を主面とする半導体基板上に、β−Ga2O3系単結晶からなるエピタキシャル層をHVPE法によるエピタキシャル結晶成長により形成する工程を含む、
エピタキシャルウエハの製造方法。 - 前記エピタキシャル層の成長レートが1.2μm/h以上である、
請求項5に記載のエピタキシャルウエハの製造方法。 - 前記半導体基板の前記主面が、β−Ga2O3系単結晶の[010]軸を回転軸として(100)面から(101)面へ向かう方向に38°以上90°以下の範囲内の角度で回転させた面である、
請求項5又は6に記載のエピタキシャルウエハの製造方法。 - 前記角度が、68±10°である、
請求項7に記載のエピタキシャルウエハの製造方法。 - 前記角度が、38±1°、53.8±1°、68±1°、76.3±1°、77.3±1°、83±1°、又は90±1°である、
請求項7に記載のエピタキシャルウエハの製造方法。
Priority Applications (6)
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JP2014097751A JP6253150B2 (ja) | 2014-05-09 | 2014-05-09 | エピタキシャルウエハ及びその製造方法 |
PCT/JP2015/063523 WO2015170774A1 (ja) | 2014-05-09 | 2015-05-11 | 半導体基板、並びにエピタキシャルウエハ及びその製造方法 |
EP15789328.0A EP3141635B1 (en) | 2014-05-09 | 2015-05-11 | Semiconductor substrate, epitaxial wafer, and method for manufacturing epitaxial wafer |
TW104114927A TWI721945B (zh) | 2014-05-09 | 2015-05-11 | 半導體基板、以及磊晶晶圓及其製造方法 |
CN201580024046.XA CN106471163B (zh) | 2014-05-09 | 2015-05-11 | 半导体衬底、外延片及其制造方法 |
US15/309,956 US10676841B2 (en) | 2014-05-09 | 2015-05-11 | Semiconductor substrate, epitaxial wafer, and method for manufacturing epitaxial wafer |
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EP (1) | EP3141635B1 (ja) |
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JP5984069B2 (ja) * | 2013-09-30 | 2016-09-06 | 株式会社タムラ製作所 | β−Ga2O3系単結晶膜の成長方法、及び結晶積層構造体 |
JP6744523B2 (ja) * | 2015-12-16 | 2020-08-19 | 株式会社タムラ製作所 | 半導体基板、並びにエピタキシャルウエハ及びその製造方法 |
CN113614292B (zh) * | 2019-03-28 | 2024-08-23 | 日本碍子株式会社 | 半导体膜 |
CN113394079A (zh) * | 2021-06-18 | 2021-09-14 | 中国电子科技集团公司第四十六研究所 | 一种采用卤化物气相外延法生长氧化镓外延层的方法 |
CN117941041A (zh) * | 2021-09-03 | 2024-04-26 | 三菱电机株式会社 | 晶体层叠构造体、半导体装置及晶体层叠构造体的制造方法 |
WO2024048710A1 (ja) * | 2022-08-31 | 2024-03-07 | 株式会社Flosfia | 結晶膜および結晶膜の製造方法 |
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US7008839B2 (en) * | 2002-03-08 | 2006-03-07 | Matsushita Electric Industrial Co., Ltd. | Method for manufacturing semiconductor thin film |
JP4680762B2 (ja) | 2005-12-14 | 2011-05-11 | 株式会社光波 | 発光素子及びその製造方法 |
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