WO2015151412A1 - SiC種結晶の加工変質層の除去方法、SiC種結晶及びSiC基板の製造方法 - Google Patents
SiC種結晶の加工変質層の除去方法、SiC種結晶及びSiC基板の製造方法 Download PDFInfo
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- WO2015151412A1 WO2015151412A1 PCT/JP2015/001302 JP2015001302W WO2015151412A1 WO 2015151412 A1 WO2015151412 A1 WO 2015151412A1 JP 2015001302 W JP2015001302 W JP 2015001302W WO 2015151412 A1 WO2015151412 A1 WO 2015151412A1
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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
- C30B33/00—After-treatment of single crystals or homogeneous polycrystalline material with defined structure
- C30B33/08—Etching
- C30B33/12—Etching in gas atmosphere or plasma
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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
- C30B19/00—Liquid-phase epitaxial-layer growth
- C30B19/02—Liquid-phase epitaxial-layer growth using molten solvents, e.g. flux
- C30B19/04—Liquid-phase epitaxial-layer growth using molten solvents, e.g. flux the solvent being a component of the crystal composition
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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
- C30B19/00—Liquid-phase epitaxial-layer growth
- C30B19/12—Liquid-phase epitaxial-layer growth characterised by the substrate
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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
- C30B29/36—Carbides
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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
- C30B33/00—After-treatment of single crystals or homogeneous polycrystalline material with defined structure
- C30B33/02—Heat treatment
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- H10P14/2904—
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- H10P14/3408—
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- H10P14/36—
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- H10P50/00—
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- H10P50/242—
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- H10P72/0421—
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- H10P72/0434—
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- H10P72/0436—
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- H10P90/126—
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- H10P95/906—
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/80—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials
- H10D62/83—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
- 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
- H10D62/8325—Silicon carbide
Definitions
- the present invention mainly relates to a method for removing a work-affected layer of a SiC seed crystal produced by cutting.
- SiC is attracting attention as a new semiconductor material because it is superior in heat resistance and electrical characteristics as compared to Si and the like.
- an SiC substrate SiC bulk substrate
- an epitaxial layer is grown on the SiC substrate to produce an epitaxial wafer.
- a semiconductor element is manufactured from this epitaxial wafer.
- an MSE method is known as a method for growing a SiC single crystal using a seed crystal.
- Patent Document 1 discloses a method of growing a SiC single crystal using the MSE method.
- the MSE method uses a SiC seed crystal composed of a SiC single crystal, a feed substrate having a higher free energy than the SiC seed crystal, and a Si melt.
- An SiC single crystal can be grown on the surface of the SiC seed crystal by disposing the SiC seed crystal and the feed substrate so as to face each other, positioning the Si melt therebetween, and heating under vacuum.
- Non-Patent Document 1 discloses that the growth of an SiC single crystal by the MSE method is inhibited by crystal defects.
- the screw dislocation (TSD) has the largest growth inhibition degree
- the basal plane dislocation (BPD) has the small growth inhibition degree
- the edge dislocation (TED) hardly inhibits the growth.
- Patent Document 2 discloses a processing method for removing a surface alteration layer generated on a SiC substrate.
- the surface-affected layer is described as a damaged layer having a crystal structure generated in a step of producing a SiC substrate (mechanical processing such as mechanical polishing).
- Patent Document 2 describes hydrogen etching as a method for removing the surface-modified layer.
- the applicant of the present application has found that when the MSE method is performed using an SiC single crystal cut by a diamond saw or the like as the SiC seed crystal, the growth rate is extremely slow.
- the MSE method is expected because it can produce a SiC substrate having higher quality than the sublimation recrystallization method, and it is required to eliminate this point.
- Patent Document 2 only discloses that there is a work-affected layer on the SiC substrate grown from the SiC seed crystal and that it is removed, and does not mention the work-affected layer of the SiC seed crystal.
- the present invention has been made in view of the above circumstances, and its main object is to provide a method in which the growth rate does not decrease even when the MSE method is performed using a cut SiC seed crystal. It is in.
- a method for removing a work-affected layer generated by cutting a SiC single crystal used as a seed crystal in a metastable solvent epitaxy method the surface of the SiC seed crystal being
- a method for removing a work-affected layer of a SiC seed crystal comprising an etching step of etching by heating in a Si atmosphere.
- the SiC seed crystal is plate-shaped, and in the etching step, at least a plane parallel to the thickness direction of the SiC seed crystal is etched.
- the etching amount in the etching step is preferably 10 ⁇ m or more.
- a SiC seed crystal from which the work-affected layer has been removed by the process of removing the work-affected layer of the SiC seed crystal.
- a method for manufacturing a SiC substrate including the step of removing the work-affected layer of the SiC seed crystal and a growth step.
- a SiC single crystal is grown by a metastable solvent epitaxy method using the SiC seed crystal from which the work-affected layer has been removed in the removal step.
- the SiC substrate can be efficiently manufactured.
- the schematic diagram which shows the structural example when growing a SiC single crystal by MSE method.
- the perspective view and sectional drawing which show a mode when etching a SiC seed crystal.
- the graph which shows the etching time and etching amount of a SiC seed crystal.
- FIG. 1 is a diagram for explaining the outline of a high-temperature vacuum furnace used in the surface treatment method of the present invention.
- the high-temperature vacuum furnace 10 includes a main heating chamber 21 and a preheating chamber 22.
- the main heating chamber 21 can heat an object whose surface is composed of at least a SiC single crystal to a temperature of 1000 ° C. or higher and 2300 ° C. or lower.
- the preheating chamber 22 is a space for performing preheating before the object to be processed is heated in the main heating chamber 21.
- a vacuum forming valve 23 and a vacuum gauge 25 are connected to the main heating chamber 21.
- the degree of vacuum in the main heating chamber 21 can be adjusted by the vacuum forming valve 23.
- With the vacuum gauge 25, the degree of vacuum in the main heating chamber 21 can be measured.
- a heater 26 is provided inside the heating chamber 21. Further, a heat reflecting metal plate (not shown) is fixed to the side wall and ceiling of the main heating chamber 21, and the heat reflecting metal plate reflects the heat of the heater 26 toward the central portion of the main heating chamber 21. It is configured. Thereby, a to-be-processed object can be heated powerfully and uniformly, and it can be heated up to the temperature of 1000 to 2300 degreeC.
- a resistance heating type heater or a high frequency induction heating type heater can be used as the heater 26, for example.
- the object to be processed is heated while being accommodated in the crucible (accommodating container) 30.
- the crucible 30 is placed on an appropriate support base or the like, and is configured to be movable at least from the preheating chamber to the main heating chamber by moving the support base.
- the crucible 30 includes an upper container 31 and a lower container 32 that can be fitted to each other.
- the crucible 30 is made of tantalum metal and is configured to expose the tantalum carbide layer to the internal space.
- Si serving as a Si supply source is arranged in an appropriate form.
- the crucible 30 When heat-treating the workpiece, first, as shown by a chain line in FIG. 1, the crucible 30 is placed in the preheating chamber 22 of the high-temperature vacuum furnace 10 and preliminarily maintained at an appropriate temperature (for example, about 800 ° C.). Heat. Next, the crucible 30 is moved to the main heating chamber 21 that has been heated to a preset temperature (for example, about 1800 ° C.) in advance, and the object to be processed is heated. Note that preheating may be omitted.
- a preset temperature for example, about 1800 ° C.
- FIG. 2 is a schematic diagram showing a configuration example when a SiC single crystal is grown by the MSE method.
- an SiC seed crystal 40, two Si plates 41, and two carbon feed substrates 42 are arranged inside the crucible 30. These are supported by a support base 33.
- the SiC seed crystal 40 is used as a substrate (seed side) for liquid phase epitaxial growth.
- the SiC seed crystal 40 is produced, for example, by dicing (cutting) a 4H—SiC single crystal having a predetermined size.
- the SiC seed crystal 40 of this embodiment is a hexagonal plate-shaped member as shown in FIG. 3, the shape is arbitrary. Further, 6H—SiC can be used instead of 4H—SiC.
- Si plates 41 are arranged above and below the SiC seed crystal 40.
- the Si plate 41 is a Si plate-like member. Since the melting point of Si is about 1400 ° C., the Si plate 41 is melted by heating in the high-temperature vacuum furnace 10 described above. Carbon feed substrates 42 are arranged above and below the Si plate 41.
- the carbon feed substrate 42 is used as a raw material for supplying carbon, that is, a feed side.
- the carbon feed substrate 42 is made of polycrystalline 3C—SiC and has a higher free energy than the SiC seed crystal 40.
- the SiC seed crystal 40, the Si plate 41, and the carbon feed substrate 42 are disposed as described above and heated at, for example, 1800 ° C., the Si plate 41 disposed between the SiC seed crystal 40 and the carbon feed substrate 42 is melted.
- the silicon melt acts as a solvent for moving carbon.
- a SiC single crystal can be grown on the surface of the SiC seed crystal 40 by the MSE method. Thereby, it is possible to manufacture a SiC substrate flat at an atomic level with few micropipes and crystal defects.
- an epitaxial layer is grown by CVD (chemical vapor deposition) or LPE (liquid phase epitaxy), an ion implantation process, an annealing process (heating process) for activating ions. Etc. are performed, and a semiconductor element is manufactured.
- the present applicant has discovered that even if the MSE method is performed using the SiC seed crystal 40, the growth rate of the SiC single crystal may be extremely slow. Furthermore, the present applicant has also discovered that this phenomenon occurs when the SiC seed crystal 40 produced by cutting such as dicing is used. Based on these findings, the applicant of the present application considers that a stress is applied to the SiC seed crystal 40 during the cutting process to generate a work-affected layer, and this work-affected layer inhibits growth, and the work-affected layer is removed. A method was proposed.
- FIG. 3 is a perspective view and a cross-sectional view showing a state when the SiC seed crystal 40 is etched.
- the etching of the SiC seed crystal 40 is performed by accommodating the SiC seed crystal 40 in the crucible 30 and heating the crucible 30 in the high temperature vacuum furnace 10. As shown in FIG. 3, the SiC seed crystal 40 is disposed inside the crucible 30 described above. In this embodiment, the SiC seed crystal 40 is supported by the support base 34, but the support base 34 may be omitted. However, it is considered that the work-affected layer of SiC seed crystal 40 is formed on the side surface (surface parallel to the thickness direction) and its vicinity, so it is preferable to expose this portion.
- a Si supply source is arranged in the crucible 30 in order to place the crucible 30 in a Si atmosphere during heating.
- the Si supply source include solid Si pellets, Si fixed to the inner wall of the crucible 30, or an inner wall made of tantalum silicide. This etching is performed by heating the crucible 30 (SiC seed crystal 40) in an environment of 1500 ° C. to 2200 ° C., preferably 1800 ° C. to 2000 ° C. By heating, the inside of the crucible 30 becomes a Si atmosphere by the Si supply source.
- SiC seed crystal 40 When SiC seed crystal 40 is heated under Si vapor pressure, SiC in SiC seed crystal 40 becomes Si 2 C or SiC 2 and sublimates, and Si in the Si atmosphere becomes C and C on the surface of SiC seed crystal 40. Combine and self-organize. Thereby, the work-affected layer considered to be generated on the side surface of SiC seed crystal 40 and in the vicinity thereof can be removed. Thereby, even if it is the SiC seed crystal 40 produced by cutting processes, such as a dicing process, it can prevent that a growth rate falls at the time of implementation of MSE method.
- FIGS. 4 and 5 are diagrams showing results when the SiC seed crystal 40 is etched.
- four SiC seed crystals 40 having the same configuration were prepared, and three of the SiC seed crystals 40 were subjected to heat treatment at 1800 ° C. and 10 ⁇ 5 Pa for 3 minutes, 7 minutes, and 11 minutes, respectively. .
- the SiC seed crystal 40 having a heating time of 3 minutes has an etching amount of 11 ⁇ m
- the SiC seed crystal 40 having a heating time of 7 minutes has an etching amount of 25 ⁇ m.
- the etching amount of the SiC seed crystal 40 having a time of 11 minutes was 32 ⁇ m. Note that the etching amount increased as the etching time was increased, and the etching time and the etching amount were in a proportional relationship.
- the SiC seed crystal 40 can be etched by a desired amount by measuring the etching time.
- FIG. 5 is a view showing a micrograph when the etched SiC seed crystal 40 is viewed from above (from one side in the thickness direction).
- the measurement point 1 is a hexagonal side portion
- the measurement point 2 is a hexagonal apex portion.
- the number at the top of FIG. 5B is the etching amount.
- a part of the end portion of the SiC seed crystal 40 is missing and uneven.
- the SiC seed crystal 40 having a larger etching amount the chipping at the end portion is removed, and a considerable improvement is observed when the etching amount is 10 ⁇ m.
- the etching amount is 25 ⁇ m and 32 ⁇ m, the chipping at the end portion is almost completely completed. It can be seen that the end face is flattened.
- the Si plate 41 and the carbon feed substrate 42 were disposed as described with reference to FIG. 2, and heating was performed at 1800 ° C. with an inert gas pressure of 10 torr for a predetermined time. Thereafter, the SiC seed crystal 40 was taken out, and the length in the a-axis direction (epitaxial growth direction) was measured.
- the SiC seed crystal 40 having an etching amount of 10 ⁇ m clearly has a higher growth rate than the SiC seed crystal 40 that has not been etched. Further, the SiC seed crystal 40 having an etching amount of 25 ⁇ m has a higher growth rate. Note that the growth rates of the SiC seed crystals 40 having an etching amount of 25 ⁇ m and 32 ⁇ m were almost the same.
- the etching amount is preferably 10 ⁇ m or more, and more preferably 25 ⁇ m or more. As described above, by etching the SiC seed crystal 40, a situation in which the growth rate of the MSE method is slow can be avoided.
- a method for removing the work-affected layer of the SiC substrate is generally chemical mechanical polishing or hydrogen etching.
- chemical mechanical polishing it is easy to polish the upper surface or the lower surface of the SiC seed crystal 40, but it is difficult to polish the side surface of the SiC seed crystal 40.
- the polishing rate of chemical mechanical polishing is 1 ⁇ m / h or less.
- the etching rate of hydrogen etching is several tens nm to several hundreds nm / h. Therefore, it takes a long time to remove a general work-affected layer.
- the altered layer can be removed.
- the SiC seed crystal 40 manufactured by dicing and used as a seed crystal for the MSE method is heated in an Si atmosphere to etch the surface, and the SiC seed crystal 40 The process-affected layer generated in the step is removed.
- the SiC seed crystal 40 is plate-shaped, and at least a surface parallel to the thickness direction of the SiC seed crystal 40 is etched.
- etching amount not only etching time but also temperature, inert gas pressure, Si pressure, etc. may be used.
- the temperature conditions and pressure conditions described above are examples and can be changed as appropriate. Further, a heating device other than the high-temperature vacuum furnace 10 described above may be used, or a container having a shape or material different from that of the crucible 30 may be used.
- the cutting process may be a cutting process by an appropriate method such as a mechanical process such as a dicing process or a process using an energy wave such as a laser process.
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Abstract
Description
30 坩堝
40 SiC種結晶
41 Siプレート
42 炭素フィード基板
Claims (5)
- 準安定溶媒エピタキシー法の種結晶として用いられるSiC単結晶について、切断加工により生じた加工変質層を除去するための方法であって、
SiC種結晶の表面をSi雰囲気下で加熱することでエッチングするエッチング工程を含むことを特徴とするSiC種結晶の加工変質層の除去方法。 - 請求項1に記載のSiC種結晶の加工変質層の除去方法であって、
前記SiC種結晶は板状であり、
前記エッチング工程では、少なくとも前記SiC種結晶の厚み方向に平行な面がエッチングされることを特徴とするSiC種結晶の加工変質層の除去方法。 - 請求項1に記載のSiC種結晶の加工変質層の除去方法であって、
前記エッチング工程のエッチング量が10μm以上であることを特徴とするSiC種結晶の加工変質層の除去方法。 - 請求項1に記載のSiC種結晶の加工変質層の除去方法により加工変質層が除去されたSiC種結晶。
- 請求項1に記載のSiC種結晶の加工変質層の除去方法で前記SiC種結晶の加工変質層を除去する除去工程と、
前記除去工程で前記加工変質層が除去された前記SiC種結晶を用いて、準安定溶媒エピタキシー法によりSiC単結晶を成長させる成長工程と、
を含むことを特徴とするSiC基板の製造方法。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201580009773.9A CN106029960B (zh) | 2014-03-31 | 2015-03-10 | SiC籽晶的加工变质层的除去方法、SiC籽晶和SiC基板的制造方法 |
| US15/300,597 US20170114475A1 (en) | 2014-03-31 | 2015-03-10 | METHOD FOR REMOVING WORK-AFFECTED LAYER ON SiC SEED CRYSTAL, SiC SEED CRYSTAL, AND SiC SUBSTRATE MANUFACTURING METHOD |
| EP15773120.9A EP3128047B1 (en) | 2014-03-31 | 2015-03-10 | Method for removing work-affected layer of sic seed crystal, and sic substrate manufacturing method |
| KR1020167022410A KR101893278B1 (ko) | 2014-03-31 | 2015-03-10 | SiC 종결정의 가공 변질층의 제거 방법, SiC 종결정, 및 SiC 기판의 제조 방법 |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2014-074742 | 2014-03-31 | ||
| JP2014074742A JP6232329B2 (ja) | 2014-03-31 | 2014-03-31 | SiC種結晶の加工変質層の除去方法、SiC種結晶及びSiC基板の製造方法 |
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| WO2015151412A1 true WO2015151412A1 (ja) | 2015-10-08 |
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Country Status (7)
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| US (1) | US20170114475A1 (ja) |
| EP (1) | EP3128047B1 (ja) |
| JP (1) | JP6232329B2 (ja) |
| KR (1) | KR101893278B1 (ja) |
| CN (1) | CN106029960B (ja) |
| TW (1) | TWI671438B (ja) |
| WO (1) | WO2015151412A1 (ja) |
Cited By (2)
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| WO2019022054A1 (ja) * | 2017-07-28 | 2019-01-31 | 東洋炭素株式会社 | 単結晶SiCの製造方法、SiCインゴットの製造方法、SiCウエハの製造方法、及び単結晶SiC |
| WO2020241541A1 (ja) * | 2019-05-27 | 2020-12-03 | 昭和電工株式会社 | SiC単結晶インゴットの製造方法及びSiC改質シードの製造方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107004592B (zh) * | 2014-11-18 | 2020-12-08 | 东洋炭素株式会社 | 碳化硅基板的蚀刻方法及收容容器 |
| JP6621304B2 (ja) * | 2015-11-10 | 2019-12-18 | 学校法人関西学院 | 半導体ウエハの製造方法 |
| EP3605585A4 (en) * | 2017-03-22 | 2020-12-30 | Toyo Tanso Co., Ltd. | PROCESS FOR MANUFACTURING A REFORMED SIC SLICE, SIC SLICE FIXED TO AN EPITAXIAL LAYER, THE MANUFACTURING PROCESS, AND SURFACE TREATMENT PROCESS |
| JP2018199591A (ja) * | 2017-05-25 | 2018-12-20 | 東洋炭素株式会社 | SiCウエハの製造方法、エピタキシャルウエハの製造方法、及びエピタキシャルウエハ |
| JP7300248B2 (ja) * | 2018-07-25 | 2023-06-29 | 株式会社デンソー | SiCウェハ及びSiCウェハの製造方法 |
| EP3828318B1 (en) * | 2018-07-25 | 2024-12-25 | Toyota Tsusho Corporation | Sic wafer and manufacturing method for sic wafer |
| US20220002905A1 (en) * | 2018-09-21 | 2022-01-06 | Toyo Tanso Co., Ltd. | Method for manufacturing device fabrication wafer |
| JP7464808B2 (ja) * | 2019-03-05 | 2024-04-10 | 学校法人関西学院 | SiC基板の製造方法及びその製造装置及びSiC基板の加工変質層を低減する方法 |
| WO2021060368A1 (ja) | 2019-09-27 | 2021-04-01 | 学校法人関西学院 | SiC単結晶の製造方法、SiC単結晶の製造装置及びSiC単結晶ウェハ |
| WO2021060367A1 (ja) * | 2019-09-27 | 2021-04-01 | 学校法人関西学院 | SiC基板の製造方法 |
| EP4137619A4 (en) * | 2020-04-14 | 2024-04-17 | Kwansei Gakuin Educational Foundation | METHOD FOR MANUFACTURING A SILICON CARBIDE SUBSTRATE, SILICON CARBIDE SUBSTRATE AND METHOD FOR REMOVING A STRESS LAYER INTRODUCED INTO A SILICON CARBIDE SUBSTRATE BY LASER PROCESSING |
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| JP2009218575A (ja) * | 2008-02-12 | 2009-09-24 | Toyota Motor Corp | 半導体基板の製造方法 |
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| US20120042822A1 (en) * | 2009-04-30 | 2012-02-23 | Ecotron Co., Ltd. | METHOD FOR FABRICATING SiC SUBSTRATE |
| JP5464544B2 (ja) * | 2009-05-12 | 2014-04-09 | 学校法人関西学院 | エピタキシャル成長層付き単結晶SiC基板、炭素供給フィード基板、及び炭素ナノ材料付きSiC基板 |
| KR101454978B1 (ko) | 2009-08-27 | 2014-10-27 | 신닛테츠스미킨 카부시키카이샤 | SiC 단결정 웨이퍼와 그 제조 방법 |
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| JP5794648B2 (ja) * | 2011-11-11 | 2015-10-14 | 学校法人関西学院 | ナノメーター標準原器及びナノメーター標準原器の製造方法 |
| JP5982971B2 (ja) * | 2012-04-10 | 2016-08-31 | 住友電気工業株式会社 | 炭化珪素単結晶基板 |
| JP6080075B2 (ja) * | 2013-06-13 | 2017-02-15 | 学校法人関西学院 | SiC基板の表面処理方法 |
| JP2017105697A (ja) * | 2015-11-26 | 2017-06-15 | 東洋炭素株式会社 | 薄型のSiCウエハの製造方法及び薄型のSiCウエハ |
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| JP2008016691A (ja) * | 2006-07-07 | 2008-01-24 | Kwansei Gakuin | 単結晶炭化ケイ素基板の表面改質方法、単結晶炭化ケイ素薄膜の形成方法、イオン注入アニール方法及び単結晶炭化ケイ素基板、単結晶炭化ケイ素半導体基板 |
| JP2009218575A (ja) * | 2008-02-12 | 2009-09-24 | Toyota Motor Corp | 半導体基板の製造方法 |
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| WO2019022054A1 (ja) * | 2017-07-28 | 2019-01-31 | 東洋炭素株式会社 | 単結晶SiCの製造方法、SiCインゴットの製造方法、SiCウエハの製造方法、及び単結晶SiC |
| JP2019026500A (ja) * | 2017-07-28 | 2019-02-21 | 東洋炭素株式会社 | 単結晶SiCの製造方法、SiCインゴットの製造方法、SiCウエハの製造方法、及び単結晶SiC |
| WO2020241541A1 (ja) * | 2019-05-27 | 2020-12-03 | 昭和電工株式会社 | SiC単結晶インゴットの製造方法及びSiC改質シードの製造方法 |
| JPWO2020241541A1 (ja) * | 2019-05-27 | 2020-12-03 | ||
| JP7476890B2 (ja) | 2019-05-27 | 2024-05-01 | 株式会社レゾナック | SiC単結晶インゴットの製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20160111437A (ko) | 2016-09-26 |
| EP3128047B1 (en) | 2018-09-26 |
| JP6232329B2 (ja) | 2017-11-15 |
| EP3128047A1 (en) | 2017-02-08 |
| CN106029960B (zh) | 2019-07-09 |
| KR101893278B1 (ko) | 2018-08-29 |
| US20170114475A1 (en) | 2017-04-27 |
| JP2015196616A (ja) | 2015-11-09 |
| EP3128047A4 (en) | 2017-04-26 |
| TW201606145A (zh) | 2016-02-16 |
| CN106029960A (zh) | 2016-10-12 |
| TWI671438B (zh) | 2019-09-11 |
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