KR102374317B1 - 산화갈륨 결정의 제조 장치 및 산화갈륨 결정의 제조 방법 - Google Patents
산화갈륨 결정의 제조 장치 및 산화갈륨 결정의 제조 방법 Download PDFInfo
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- KR102374317B1 KR102374317B1 KR1020220000203A KR20220000203A KR102374317B1 KR 102374317 B1 KR102374317 B1 KR 102374317B1 KR 1020220000203 A KR1020220000203 A KR 1020220000203A KR 20220000203 A KR20220000203 A KR 20220000203A KR 102374317 B1 KR102374317 B1 KR 102374317B1
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- 239000013078 crystal Substances 0.000 title claims abstract description 115
- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 229910001195 gallium oxide Inorganic materials 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims description 41
- 238000004519 manufacturing process Methods 0.000 title claims description 23
- 230000008569 process Effects 0.000 title description 2
- 238000010438 heat treatment Methods 0.000 claims abstract description 62
- 239000000956 alloy Substances 0.000 claims abstract description 19
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 12
- 229910005191 Ga 2 O 3 Inorganic materials 0.000 claims description 28
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 16
- 229910018967 Pt—Rh Inorganic materials 0.000 claims description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- 239000003779 heat-resistant material Substances 0.000 claims description 10
- 238000002425 crystallisation Methods 0.000 claims description 3
- 230000008025 crystallization Effects 0.000 claims description 3
- QZQVBEXLDFYHSR-UHFFFAOYSA-N gallium(III) oxide Inorganic materials O=[Ga]O[Ga]=O QZQVBEXLDFYHSR-UHFFFAOYSA-N 0.000 description 75
- 230000008018 melting Effects 0.000 description 54
- 238000002844 melting Methods 0.000 description 54
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 48
- 238000002474 experimental method Methods 0.000 description 35
- 239000010948 rhodium Substances 0.000 description 30
- 229910001260 Pt alloy Inorganic materials 0.000 description 24
- 239000000463 material Substances 0.000 description 24
- 229910000629 Rh alloy Inorganic materials 0.000 description 23
- 239000002994 raw material Substances 0.000 description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 20
- 239000001301 oxygen Substances 0.000 description 20
- 229910052760 oxygen Inorganic materials 0.000 description 20
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 14
- 239000011810 insulating material Substances 0.000 description 13
- 238000005231 Edge Defined Film Fed Growth Methods 0.000 description 10
- 230000007547 defect Effects 0.000 description 9
- 239000007789 gas Substances 0.000 description 9
- 238000007711 solidification Methods 0.000 description 9
- 230000008023 solidification Effects 0.000 description 9
- 239000000758 substrate Substances 0.000 description 8
- 229910052786 argon Inorganic materials 0.000 description 7
- 238000002109 crystal growth method Methods 0.000 description 6
- 230000006698 induction Effects 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 description 4
- 229910021343 molybdenum disilicide Inorganic materials 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 238000012512 characterization method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910000953 kanthal Inorganic materials 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
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- 230000003287 optical effect Effects 0.000 description 2
- 239000003870 refractory metal Substances 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
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- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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- 238000007689 inspection Methods 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- XCZLSTLZPIRTRY-UHFFFAOYSA-N oxogallium Chemical compound [Ga]=O XCZLSTLZPIRTRY-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
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- C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
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Abstract
산화갈륨 결정의 대형화, 고품질화를 가능하게 하는, 산화갈륨 결정의 제조 장치를 제공한다.
[해결 수단]
본 발명에 관한 산화갈륨 결정의 제조 장치(10)는, 기체(12)와, 기체(12)상에 배설된 내열성을 갖는 통형상의 노본체(14)와, 노본체(14)를 폐색하는 덮개체(18)와, 노본체(14) 내에 배설된 발열체(20)와, 기체(12)를 관통하여 상하이동 자유롭게 마련된 도가니 받침축(24)과와, 도가니 받침축(24)상에 배설되고, 발열체(20)에 의해 가열되는 도가니(30)를 구비하는 수직 브릿지만로(爐)로 이루어지는 산화갈륨 결정의 제조 장치(10)로서, 도가니(30)가, Pt계 합금제의 도가니이고, 노본체(14)의 내벽이, 소요 높이를 갖는 링형상의 내열 부재(32b)가 복수 적층된 내열벽(32)으로 형성되어 있음과 함께, 링형상의 내열 부재(32b)가 복수의 분할편(32a)이 접합되어 링형상으로 형성되어 있는 것을 특징으로 한다.
Description
도 2는 기존의 문헌 데이터와 발명자에 의한 실험 데이터를 기초로 제작한 Pt/Rh 합금의 조성(wt%)과 융점과의 관계를 도시하는 그래프.
도 3은 산화갈륨 결정 제조 장치의 구성을 도시하는 단면도.
도 4는 링형상의 내열 부재를 도시하는 사시도.
도 5는 노본체의 사시도.
도 6은 발열체의 사시도.
도 7은 덮개의 평면도.
도 8은 고주파 유도가열에 의한 산화갈륨 결정의 제조 장치의 개략도.
도 9는 도가니에 β-Ga2O3를 넣고, 도가니의 온도를 상승시킨 때의, 도가니의 온도 프로필의 실측 데이터.
도 10은 도가니 중의 β-Ga2O3를 융해시킨 후, 서서히 도가니의 온도를 강하시킨 때의 온도 프로필의 실측 데이터.
도 11은 도가니에 넣은 β-Ga2O3 재료의 가열 전(a)과 융해·고화시킨 후(b)의 상태를 도시하는 사진.
도 12는 Pt/Rh : 70/30wt%로 이루어지는 Pt/Rh 합금 도가니를 사용한 β-Ga2O3의 융해 실험을 도시하는 사진.
도 13은 Pt/Rh : 90/10wt%로 이루어지는 Pt/Rh 합금 도가니를 사용한 β-Ga2O3의 융해 실험을 도시하는 사진.
도 14는 Pt/Rh : 90/10wt%로 이루어지는 Pt/Rh 합금 도가니를 사용하고, 아르곤 가스 분위기 중에서 행하는 β-Ga2O3의 융해 실험을 도시하는 사진.
도 15는 도가니 내에서 일방향 응고된 전형적인 3종류의 결정 사진.
도 16은 양면 경면 연마 기판에 관해, 크로스 니콜 관찰, X선 토포그래프 관찰, 광학 현미경 감사를 행한 결과를 도시하는 사진.
도 17은 도 3에 도시하는 저항 발열체 대형(大型) 대기로(大氣爐)를 사용하여, 내경 2인치의 Pt-Rh 80-20wt% 합금 도가니를 사용하여 육성한 β-Ga2O3 결정의 사진.
도 18은 결정 육성 방법(FZ법, CZ법, EFG법, VB법, HB법)를 도시하는 설명도.
Claims (3)
- 기체와, 그 기체상에 배설된 내열성을 갖는 통형상의 노본체와, 그 노본체를 폐색하는 덮개체와, 상기 노본체 내에 배설된 발열체와, 상기 기체를 관통하여 상하이동 자유롭게 마련된 도가니 받침축과, 그 도가니 받침축상에 배설되고, 상기 발열체에 의해 가열되는 도가니를 구비한 수직 브릿지만로로 이루어지는 산화갈륨 결정의 제조 장치로서,
상기 도가니가, Rh 함유량이 10∼30wt%의 Pt-Rh계 합금제이고, 1800℃의 온도에 견디는 내열성을 갖는 도가니이고,
상기 도가니 받침축의 상단에는, 지르코니아제의 내열 재료로 이루어지는 어댑터가 부착되고, 그 어댑터에 상기 도가니가 재치되는 것을 특징으로 하는 산화갈륨 결정의 제조 장치. - 제1항에 있어서,
상기 도가니 받침축을 구성하는 내열 재료는, 알루미나제의 내열 재료로 이루어지는 것을 특징으로 하는 산화갈륨 결정의 제조 장치. - 제1항 또는 제2항에 기재된 산화갈륨 결정의 제조 장치를 이용하여, β-Ga2O3의 결정을 육성하는 것을 특징으로 하는 산화갈륨 결정의 제조 방법.
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