JP2020040845A - SiC単結晶製造装置 - Google Patents
SiC単結晶製造装置 Download PDFInfo
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- 239000013078 crystal Substances 0.000 title claims abstract description 123
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 50
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 150000004767 nitrides Chemical class 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 239000011810 insulating material Substances 0.000 claims description 50
- 239000011248 coating agent Substances 0.000 claims description 40
- 238000000576 coating method Methods 0.000 claims description 40
- 238000003860 storage Methods 0.000 claims description 6
- 239000010955 niobium Substances 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- 229910052735 hafnium Inorganic materials 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 229910052758 niobium Inorganic materials 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 2
- 239000012774 insulation material Substances 0.000 abstract 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 91
- 229910010271 silicon carbide Inorganic materials 0.000 description 88
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 14
- 229910002804 graphite Inorganic materials 0.000 description 14
- 239000010439 graphite Substances 0.000 description 14
- 238000000859 sublimation Methods 0.000 description 13
- 230000008022 sublimation Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 11
- 229920000049 Carbon (fiber) Polymers 0.000 description 7
- 239000004917 carbon fiber Substances 0.000 description 7
- 229910003468 tantalcarbide Inorganic materials 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 238000005092 sublimation method Methods 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 229910021476 group 6 element Inorganic materials 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000003870 refractory metal Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 235000012431 wafers Nutrition 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 229910021480 group 4 element Inorganic materials 0.000 description 1
- 229910021478 group 5 element Inorganic materials 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
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- C30B23/00—Single-crystal growth by condensing evaporated or sublimed materials
- C30B23/002—Controlling or regulating
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- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
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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
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- C30B23/00—Single-crystal growth by condensing evaporated or sublimed materials
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- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
Description
特許文献2には、断熱材の貫通孔に、黒鉛製の円筒状部材を配置することが開示されている。
すなわち、本発明は、上記課題を解決するため、以下の手段を提供する。
図1は、本発明の第1実施形態に係るSiC単結晶成長装置の断面模式図である。
図1に示すSiC単結晶成長装置101は、結晶成長用容器10と、断熱材20と、加熱器30と、温度測定器40とを備える。
図2は、本発明の第2実施形態に係るSiC単結晶成長装置の断面模式図である。
図2に示すSiC単結晶成長装置102は、断熱材20の頂部20aの結晶成長用容器10側の面(内側面)が被覆材23で被覆されている点で、上記第1実施形態に係るSiC単結晶成長装置101と相違する。なお、本実施形態に係るSiC単結晶成長装置102と上記第1実施形態に係るSiC単結晶成長装置101とで共通する部分は、同一の符号を付して説明を省略する。
図3は、本発明の第3実施形態に係るSiC単結晶成長装置の断面模式図である。
図3に示すSiC単結晶成長装置103は、断熱材20の頂部20aの結晶成長用容器10側と反対側の面(外側面)が被覆材24で被覆されている点で、上記第2実施形態に係るSiC単結晶成長装置102と相違する。なお、本実施形態に係るSiC単結晶成長装置103と上記第2実施形態に係るSiC単結晶成長装置102とで共通する部分は、同一の符号を付して説明を省略する。
図4は、本発明の第4実施形態に係るSiC単結晶成長装置の断面模式図である。
図4に示すSiC単結晶成長装置104は、断熱材20の頂部20aに、2つの貫通孔21a、21bが形成されて、2つの温度測定器40a、40bがそれぞれ、貫通孔21a、21bを介して結晶成長用容器10の蓋部12の温度を測定できるようにされている点で上記第1実施形態に係るSiC単結晶成長装置101と相違する。なお、本実施形態に係るSiC単結晶成長装置104と上記第1実施形態に係るSiC単結晶成長装置101とで共通する部分は、同一の符号を付して説明を省略する。
炭素繊維フェルト製の断熱材を用意した。この断熱材の頂部に貫通孔(内径:30mm)を1つ形成し、その貫通孔の内壁面にTaCからなる被覆材(厚さ:0.030mm)を形成した。被覆材は、蒸着法により形成した。この断熱材を用いて、図1に示す構成のSiC単結晶製造装置を作製した。
断熱材の貫通孔の内壁面と、断熱材の頂部の内側面にTaCからなる被覆材を形成したこと以外は実施例1と同様にして、図2に示す構成のSiC単結晶製造装置を作製した。
断熱材の貫通孔の内壁面と、断熱材の頂部の内側面及び外側面にTaCからなる被覆材で被覆したこと以外は実施例1と同様にして、図3に示す構成のSiC単結晶製造装置を作製した。
貫通孔の内壁面を被覆材で被覆しなかったこと以外は実施例1と同様にして、SiC単結晶製造装置を作製した。
断熱材の頂部に貫通孔(内径:40mm)を1つ形成し、その貫通孔の内壁面に黒鉛から被覆材(厚さ:5mm)を形成したこと以外は、実施例1と同様にしてSiC単結晶製造装置を作製した。黒鉛からなる被覆材は、黒鉛ペーストを貫通孔の内壁面に塗布し、次いで黒鉛ペーストを乾燥した後、黒鉛表面を研磨することによって形成した。
(断熱材の貫通孔の閉塞時間)
下記の製造方法よりSiC単結晶を製造しながら、温度測定器(パイロメーター)を用いて、貫通孔を介して蓋部の温度を測定した。SiC単結晶の製造開始(加熱器による加熱開始)から、貫通孔が閉塞して、温度測定器にて蓋部の温度を測定できなくなるまでの時間を閉塞時間として計測した。
SiC単結晶製造装置の結晶成長用容器の原料収容部にSiC原料を投入し、蓋部の種結晶支持部に種結晶を配置した。次いで、加熱器の電源を入れ、蓋部の温度が2000℃以上となるように加熱した。
2 種結晶
10 結晶成長用容器
11 原料収容部
12 蓋部
13 種結晶支持部
20 断熱材
20a 頂部
21、21a、21b 貫通孔
22 被覆材
23 被覆材
24 被覆材
30 加熱器
40、40a、40b 温度測定器
101、102、103、104 SiC単結晶成長装置
Claims (2)
- SiC原料を収容する原料収容部と種結晶を支持する種結晶支持部が設けられている蓋部とを有する結晶成長用容器と、
前記結晶成長用容器を覆い、貫通孔を有する断熱材と、
前記結晶成長用容器を加熱する加熱器と、
前記貫通孔を介して、前記結晶成長用容器の温度を測定する温度測定器と、を備え、
前記断熱材の前記貫通孔の内壁面が、耐熱性金属炭化物又は耐熱性金属窒化物を含む被覆材で被覆されていることを特徴とするSiC単結晶製造装置。 - 前記耐熱性金属炭化物又は耐熱性金属窒化物が、タンタル、モリブデン、ハフニウム、ニオブ、チタン、ジルコニウム、タングステン、バナジウムからなる群より選択される少なくとも一種の金属の炭化物又は窒化物である請求項1に記載のSiC単結晶製造装置。
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JP2018167066A JP7242987B2 (ja) | 2018-09-06 | 2018-09-06 | SiC単結晶製造装置 |
CN201910822530.7A CN110878428A (zh) | 2018-09-06 | 2019-09-02 | SiC单晶制造装置 |
US16/558,643 US11761113B2 (en) | 2018-09-06 | 2019-09-03 | SiC single crystal manufacturing apparatus |
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JP2012206875A (ja) * | 2011-03-29 | 2012-10-25 | Shin Etsu Handotai Co Ltd | SiC成長装置 |
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JP2012206875A (ja) * | 2011-03-29 | 2012-10-25 | Shin Etsu Handotai Co Ltd | SiC成長装置 |
JP2015127267A (ja) * | 2013-12-27 | 2015-07-09 | 住友電気工業株式会社 | 炭化珪素単結晶の製造装置および炭化珪素単結晶の製造方法 |
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US20170204532A1 (en) * | 2014-09-25 | 2017-07-20 | Melior Innovations, Inc. | Vapor deposition apparatus and techniques using high puritiy polymer derived silicon carbide |
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