JP2017178670A - 基板設置部材、ウェハプレート、およびSiCエピタキシャル基板の製造方法 - Google Patents
基板設置部材、ウェハプレート、およびSiCエピタキシャル基板の製造方法 Download PDFInfo
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- 239000000758 substrate Substances 0.000 title claims abstract description 210
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000000034 method Methods 0.000 title description 9
- 238000009434 installation Methods 0.000 claims description 42
- 238000009826 distribution Methods 0.000 abstract description 12
- 230000008021 deposition Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 16
- 229910052799 carbon Inorganic materials 0.000 description 16
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000001294 propane Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 239000012159 carrier gas Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 1
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 239000002344 surface layer Substances 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
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- C30B23/00—Single-crystal growth by condensing evaporated or sublimed materials
- C30B23/02—Epitaxial-layer growth
- C30B23/025—Epitaxial-layer growth characterised by the substrate
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- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/50—Substrate holders
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- 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
- C23C16/22—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 deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/32—Carbides
- C23C16/325—Silicon carbide
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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
- C23C16/4401—Means for minimising impurities, e.g. dust, moisture or residual gas, in the reaction chamber
- C23C16/4404—Coatings or surface treatment on the inside of the reaction chamber or on parts thereof
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- 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
- C23C16/458—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 characterised by the method used for supporting substrates in the reaction chamber
- C23C16/4581—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 characterised by the method used for supporting substrates in the reaction chamber characterised by material of construction or surface finish of the means for supporting the substrate
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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
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
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- C30B29/36—Carbides
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- C30B35/00—Apparatus not otherwise provided for, specially adapted for the growth, production or after-treatment of single crystals or of a homogeneous polycrystalline material with defined structure
- C30B35/002—Crucibles or containers
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- Crystallography & Structural Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
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- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
Abstract
Description
<A−1.SiCエピタキシャル基板>
図1は、実施の形態1に係る基板設置部材の構成を示す断面図である。この基板設置部材は、SiC基板をエピタキシャル成長するにあたってSiC基板を設置するための部材である。実施の形態1に係る基板設置部材は、ウェハプレート300と、支持プレート200とを備えて構成される。
次に、SiCエピタキシャル基板110を用いたSiCデバイスについて説明する。図5は、そのようなSiCデバイスの一例としてMOSFET(Metal Oxide Semiconductor Field Effect Transistor)の断面図を示している。以下、SiCエピタキシャル基板110を用いたMOSFETの製造方法を説明する。
実施の形態1では、支持プレート200の厚みの上限を規定したが、実施の形態2では、支持プレート200の厚みがこの上限を超えても良い。但し、この場合は支持プレート200の自重およびSiC基板100の重みだけで支持プレート200をフラットに出来ない可能性があるため、支持プレート200に反りが生じても、SiC基板100との接触具合に影響を及ぼさないようにする。
図8は、実施の形態3に係るウェハプレートの構成を示す断面図である。実施の形態1,2では、支持プレート200を設け、SiC基板100の代わりに支持プレート200にSiCコートからの昇華物を付着させることで、SiC基板100の裏面にSiCの突起が形成されることを抑制した。これに対して実施の形態3では、図8に示すように、支持プレート200を省略し、ザグリ部の底面に直接SiC基板100を載置する。つまり、ウェハプレート300のザグリ部がSiC基板の設置部となる。
図9は、実施の形態4に係るウェハプレートの構成を示す断面図である。実施の形態4に係るウェハプレート300では、SiC基板100をウェハプレート300のザグリ部に設置した場合に、SiC基板100の裏面とザグリ部の底面との間にギャップ400が形成されるようにする。それ以外の点は、実施の形態3と同様である。
以上の説明では、ウェハプレート300を、カーボン部材310とSiCコート320とを備える構成とした。しかし、ウェハプレート300がSiC多結晶体である場合も、発明の効果が得られる。ウェハプレート300は、SiC多結晶を含み、エピタキシャル成長の際にSiC昇華物が生じる構成であれば良い。
Claims (6)
- エピタキシャル成長用のSiC基板の設置部材であって、
SiC多結晶を含むウェハプレートと、
前記ウェハプレート上に載置され、SiC多結晶を含まず、前記ウェハプレートとの接触面と反対側の面がSiC基板の載置面となる支持プレートと、
を備え、
前記支持プレートの厚みh[mm]は、前記支持プレートの自重および前記SiC基板により前記支持プレートに働く単位面積あたりの力をp[N/mm2]、前記支持プレートの半径をa[mm]、ポアソン比をν、ヤング率をE[MPa]とした場合に、h4≦3pa4(1−ν2){(5+ν)/(1+ν)}/16Eを満たすことを特徴とする、
基板設置部材。 - エピタキシャル成長用のSiC基板の設置部材であって、
SiC多結晶を含むウェハプレートと、
前記ウェハプレート上に載置され、SiC多結晶を含まない支持プレートと、
を備え、
前記SiC基板は設置された状態で、前記支持プレートと離間してその上方に位置することを特徴とする、
基板設置部材。 - SiC基板を設置する設置部を備えるウェハプレートであって、
前記設置部に前記SiC基板が設置された状態で、前記SiC基板の直下にはSiC多結晶を含まず、それ以外の領域でSiC多結晶を含む、
ウェハプレート。 - 前記設置部はザグリ部であり、
前記SiC基板が前記ザグリ部に設置された状態で、前記SiC基板と前記ザグリ部の底面との間にギャップがあることを特徴とする、
請求項3に記載のウェハプレート。 - 請求項1または2に記載の基板設置部材にSiC基板を設置し、
前記SiC基板上にエピタキシャル成長させることを特徴とする、
SiCエピタキシャル基板の製造方法。 - 請求項3または4に記載のウェハプレートにSiC基板を設置し、
前記SiC基板上にエピタキシャル成長させることを特徴とする、
SiCエピタキシャル基板の製造方法。
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JP2016068264A JP6532424B2 (ja) | 2016-03-30 | 2016-03-30 | 基板設置部材、ウェハプレート、およびSiCエピタキシャル基板の製造方法 |
US15/358,543 US10508362B2 (en) | 2016-03-30 | 2016-11-22 | Substrate mounting member, wafer plate, and SiC epitaxial substrate manufacturing method |
DE102017203976.0A DE102017203976A1 (de) | 2016-03-30 | 2017-03-10 | Substratbefestigungsteil, Wafer-Platte und SiC-Epitaxialsubstrat-Fertigungsverfahren |
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DE102017203976A1 (de) | 2017-10-05 |
JP6532424B2 (ja) | 2019-06-19 |
US10508362B2 (en) | 2019-12-17 |
US20170283984A1 (en) | 2017-10-05 |
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