JP6303001B2 - 局所的炭素供給装置及び局所的炭素供給によるウェハーレベルのグラフェン単結晶製造方法 - Google Patents
局所的炭素供給装置及び局所的炭素供給によるウェハーレベルのグラフェン単結晶製造方法 Download PDFInfo
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- JP6303001B2 JP6303001B2 JP2016519973A JP2016519973A JP6303001B2 JP 6303001 B2 JP6303001 B2 JP 6303001B2 JP 2016519973 A JP2016519973 A JP 2016519973A JP 2016519973 A JP2016519973 A JP 2016519973A JP 6303001 B2 JP6303001 B2 JP 6303001B2
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- Prior art keywords
- nickel
- single crystal
- substrate
- copper
- base material
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims description 230
- 229910021389 graphene Inorganic materials 0.000 title claims description 120
- 229910052799 carbon Inorganic materials 0.000 title claims description 102
- 239000013078 crystal Substances 0.000 title claims description 102
- 238000004519 manufacturing process Methods 0.000 title claims description 40
- 239000000758 substrate Substances 0.000 claims description 114
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 claims description 90
- 239000007789 gas Substances 0.000 claims description 68
- 239000000463 material Substances 0.000 claims description 64
- 238000000034 method Methods 0.000 claims description 64
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 56
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 54
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 46
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 43
- 239000011889 copper foil Substances 0.000 claims description 33
- 238000000137 annealing Methods 0.000 claims description 31
- 229910052786 argon Inorganic materials 0.000 claims description 28
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 27
- 229910052759 nickel Inorganic materials 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 22
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 20
- 238000005229 chemical vapour deposition Methods 0.000 claims description 13
- 230000001965 increasing effect Effects 0.000 claims description 8
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011261 inert gas Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000001755 magnetron sputter deposition Methods 0.000 claims description 5
- 239000010453 quartz Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 3
- 239000005977 Ethylene Substances 0.000 claims description 3
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 3
- 238000009713 electroplating Methods 0.000 claims description 3
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 3
- 239000001294 propane Substances 0.000 claims description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 3
- MWWATHDPGQKSAR-UHFFFAOYSA-N propyne Chemical compound CC#C MWWATHDPGQKSAR-UHFFFAOYSA-N 0.000 claims description 3
- 238000007740 vapor deposition Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 150000002894 organic compounds Chemical class 0.000 claims description 2
- 229910000570 Cupronickel Inorganic materials 0.000 description 23
- 229910045601 alloy Inorganic materials 0.000 description 23
- 239000000956 alloy Substances 0.000 description 23
- 230000006911 nucleation Effects 0.000 description 20
- 238000010899 nucleation Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 12
- 239000011888 foil Substances 0.000 description 8
- 239000010409 thin film Substances 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 238000005498 polishing Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000007747 plating Methods 0.000 description 6
- 230000032258 transport Effects 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000004627 transmission electron microscopy Methods 0.000 description 4
- NQTSTBMCCAVWOS-UHFFFAOYSA-N 1-dimethoxyphosphoryl-3-phenoxypropan-2-one Chemical compound COP(=O)(OC)CC(=O)COC1=CC=CC=C1 NQTSTBMCCAVWOS-UHFFFAOYSA-N 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- 238000000101 transmission high energy electron diffraction Methods 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000001069 Raman spectroscopy Methods 0.000 description 2
- 238000001237 Raman spectrum Methods 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001887 electron backscatter diffraction Methods 0.000 description 2
- 238000005566 electron beam evaporation Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000011534 incubation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004377 microelectronic Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 230000002463 transducing effect Effects 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910002482 Cu–Ni Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 150000001875 compounds Chemical class 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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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
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- C30B25/186—Epitaxial-layer growth characterised by the substrate being specially pre-treated by, e.g. chemical or physical means
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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
- C30B29/02—Elements
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- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
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- C01B32/184—Preparation
- C01B32/186—Preparation by chemical vapour deposition [CVD]
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- C—CHEMISTRY; METALLURGY
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- C23C16/0272—Deposition of sub-layers, e.g. to promote the adhesion of the main coating
- C23C16/0281—Deposition of sub-layers, e.g. to promote the adhesion of the main coating of metallic sub-layers
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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
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- 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
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- C23C16/26—Deposition of carbon only
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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
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- 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
- C23C16/455—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 introducing gases into reaction chamber or for modifying gas flows in reaction chamber
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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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
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- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
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- C25D5/50—After-treatment of electroplated surfaces by heat-treatment
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- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
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- C25D7/06—Wires; Strips; Foils
- C25D7/0614—Strips or foils
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- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F3/00—Electrolytic etching or polishing
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- C25F3/22—Polishing of heavy metals
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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
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- C30B25/12—Substrate holders or susceptors
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
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- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
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- C30B25/16—Controlling or regulating
- C30B25/165—Controlling or regulating the flow of the reactive gases
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- 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
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- 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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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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Description
前記ニッケル銅合金基板が載置された前記局所的炭素供給装置を化学気相堆積システムのチャンバー内に配置し、予め定められた温度下で、還元性ガスと不活性ガスの混合ガスからなる保護雰囲気下に前記ニッケル銅合金基板を置き、前記局所的炭素供給装置に炭素ガス源を供給することで、前記ニッケル銅合金基板上にグラフェン単結晶を成長させるステップとを含み、前記ニッケル銅合金基板を前記局所的炭素供給装置内に載置するステップにおいて、前記ニッケル銅合金基板を、前記通孔が設けられた前記第1又は前記第2の基材に対応する前記第2又は前記第1の基材上に位置させ、前記ニッケル銅合金基板の中央と前記通孔を上下に対応するようにし、前記通孔を、炭素ガス源搬送配管に接続し、前記ニッケル銅合金基板上にグラフェン単結晶を成長させるステップにおいて、前記炭素ガス源を、不活性ガスによって濃度0.1%〜1%に希釈されたメタン、エチレン、アセチレン、プロパン、プロピレン、プロピンといった気体状の炭素含有有機化合物の1種又は複数種の組み合わせとする。
11 第1基材
12 第2基材
13 通孔
14 支持ユニット
d 通孔の孔径
L 第1基材と第2基材との間隔
Claims (11)
- 第1基材、第2基材及び支持ユニットを含み、
前記第1基材と第2基材は石英片又はセラミック片からなり、
前記第1基材と第2基材は上下に対応して分布しており、
前記支持ユニットは、前記第1基材及び第2基材を支持し、前記第1基材と第2基材の間に所定の間隔を維持させ、
前記第1基材又は第2基材の中央位置には通孔が設けられており、
前記第1基材と第2基材との間隔は0.1mm〜5mmであり、前記通孔の孔径は0.2mm〜5mmであることを特徴とする局所的炭素供給装置。 - 前記支持ユニットは前記第1基材と第2基材の間に位置し、一端が前記第1基材に接触するとともに、他端が前記第2基材に接触することを特徴とする請求項1に記載の局所的炭素供給装置。
- 請求項1又は2に記載の局所的炭素供給装置を提供するステップと、
ニッケル銅合金基板を製造して、前記ニッケル銅合金基板を前記局所的炭素供給装置内に載置するステップと、
前記ニッケル銅合金基板が載置された前記局所的炭素供給装置を化学気相堆積システムのチャンバー内に配置し、予め定められた温度下で、還元性ガスと不活性ガスの混合ガスからなる保護雰囲気下に前記ニッケル銅合金基板を置き、前記局所的炭素供給装置に炭素ガス源を供給することで、前記ニッケル銅合金基板上にグラフェン単結晶を成長させるステップとを含み、
前記ニッケル銅合金基板を前記局所的炭素供給装置内に載置するステップにおいて、前記ニッケル銅合金基板を、前記通孔が設けられた前記第1又は前記第2の基材に対応する前記第2又は前記第1の基材上に位置させ、前記ニッケル銅合金基板の中央と前記通孔を上下に対応するようにし、
前記通孔を、炭素ガス源搬送配管に接続し、
前記ニッケル銅合金基板上にグラフェン単結晶を成長させるステップにおいて、前記炭素ガス源を、不活性ガスによって濃度0.1%〜1%に希釈されたメタン、エチレン、アセチレン、プロパン、プロピレン、プロピンといった気体状の炭素含有有機化合物の1種又は複数種の組み合わせとすることを特徴とする局所的炭素供給によるウェハーレベルのグラフェン単結晶製造方法。 - 前記ニッケル銅合金基板を製造する方法は、
銅箔を提供し、
電気めっき、蒸着又はマグネトロンスパッタリング技術を用い、前記銅箔表面にニッケル層を堆積させて、ニッケル−銅の2層基板を形成し、
前記ニッケル−銅の2層基板を焼鈍処理して、前記ニッケル銅合金基板を形成する、ことを特徴とする請求項3に記載の局所的炭素供給によるウェハーレベルのグラフェン単結晶製造方法。 - 前記ニッケル−銅の2層基板を焼鈍処理する具体的な方法としては、前記ニッケル−銅の2層基板を前記局所的炭素供給装置内に載置し、前記ニッケル−銅の2層基板が載置された前記局所的炭素供給装置を、圧力20Pa〜105Paの化学気相堆積システムのチャンバー内に配置して、900℃〜1100℃下で、水素ガスとアルゴンガスとの混合ガスからなる保護雰囲気下に前記ニッケル−銅の2層基板を置き、10分〜300分間焼鈍処理し、
水素ガスとアルゴンガスの体積比率を1:10〜1:200とすることを特徴とする請求項4に記載の局所的炭素供給によるウェハーレベルのグラフェン単結晶製造方法。 - 前記ニッケル層を堆積する前に、前記銅箔を焼鈍処理するステップを更に含み、前記銅箔を焼鈍処理する過程は常圧下で行い、水素ガスとアルゴンガスとの混合ガスを供給して、焼鈍温度を1000℃〜1080℃、焼鈍時間を10分〜300分間とし、水素ガスとアルゴンガスの体積比率を1:2〜1:30とすることを特徴とする請求項4に記載の局所的炭素供給によるウェハーレベルのグラフェン単結晶製造方法。
- 前記銅箔を焼鈍処理する前に、前記銅箔を電解研磨するステップを更に含むことを特徴とする請求項6に記載の局所的炭素供給によるウェハーレベルのグラフェン単結晶製造方法。
- 前記ニッケル銅合金基板において、ニッケル銅原子の総数に対するニッケル原子の割合は10〜20%であり、前記ニッケル銅合金基板の原子総数に対するニッケル原子と銅原子の総数の割合は99.9%よりも高いことを特徴とする請求項3に記載の局所的炭素供給によるウェハーレベルのグラフェン単結晶製造方法。
- 前記ニッケル銅合金基板上にグラフェン単結晶を成長させる過程において、前記チャンバー内の圧力は20Pa〜105Paであり、前記予め定められた温度は900℃〜1100℃であり、前記還元性ガスは水素ガスであり、前記不活性ガスはアルゴンガスであり、前記水素ガスの流量は5sccm〜200sccm、前記アルゴンガスの流量は300sccm〜2000sccmであり、前記炭素ガス源の流量は5sccm〜100sccmであり、成長時間は10分〜180分であることを特徴とする請求項3に記載の局所的炭素供給によるウェハーレベルのグラフェン単結晶製造方法。
- 前記ニッケル銅合金基板上にグラフェン単結晶を成長させる過程において、前記炭素ガス源の流量は、成長初期には5sccm〜8sccmとされ、その後は半時間ごとに3sccm〜5sccmずつ増加するよう段階的に変化させることを特徴とする請求項9に記載の局所的炭素供給によるウェハーレベルのグラフェン単結晶製造方法。
- 成長完了後に、水素ガスとアルゴンガスとの混合ガス下で降温させる過程を更に含み、降温が常圧下で行われ、水素ガスとアルゴンガスの体積比率が1:10〜1:400であることを特徴とする請求項3に記載の局所的炭素供給によるウェハーレベルのグラフェン単結晶製造方法。
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |