KR102680861B1 - 질화 갈륨 기판의 제조 방법 - Google Patents
질화 갈륨 기판의 제조 방법 Download PDFInfo
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- KR102680861B1 KR102680861B1 KR1020160171563A KR20160171563A KR102680861B1 KR 102680861 B1 KR102680861 B1 KR 102680861B1 KR 1020160171563 A KR1020160171563 A KR 1020160171563A KR 20160171563 A KR20160171563 A KR 20160171563A KR 102680861 B1 KR102680861 B1 KR 102680861B1
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- 239000000758 substrate Substances 0.000 title claims abstract description 159
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 54
- 150000004767 nitrides Chemical class 0.000 title 1
- 229910002601 GaN Inorganic materials 0.000 claims abstract description 157
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 claims abstract description 144
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 102
- 239000010703 silicon Substances 0.000 claims abstract description 102
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 98
- 238000004140 cleaning Methods 0.000 claims description 42
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 35
- 239000002245 particle Substances 0.000 claims description 34
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical group N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 31
- 238000000151 deposition Methods 0.000 claims description 25
- 230000008021 deposition Effects 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 229910004191 HfTi Inorganic materials 0.000 claims description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 9
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 6
- 229910002704 AlGaN Inorganic materials 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims 3
- 239000010410 layer Substances 0.000 description 375
- 238000000034 method Methods 0.000 description 71
- 230000008569 process Effects 0.000 description 46
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 14
- 239000000463 material Substances 0.000 description 14
- 239000013078 crystal Substances 0.000 description 11
- 238000002248 hydride vapour-phase epitaxy Methods 0.000 description 11
- 230000007547 defect Effects 0.000 description 5
- 238000005137 deposition process Methods 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 239000012298 atmosphere Substances 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000010954 inorganic particle Substances 0.000 description 4
- 229910052594 sapphire Inorganic materials 0.000 description 4
- 239000010980 sapphire Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 229910000449 hafnium oxide Inorganic materials 0.000 description 3
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- 229910004205 SiNX Inorganic materials 0.000 description 2
- 229910020776 SixNy Inorganic materials 0.000 description 2
- XOYLJNJLGBYDTH-UHFFFAOYSA-M chlorogallium Chemical compound [Ga]Cl XOYLJNJLGBYDTH-UHFFFAOYSA-M 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000011146 organic particle Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000000927 vapour-phase epitaxy Methods 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
Classifications
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- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
- C30B25/02—Epitaxial-layer 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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- C30B25/04—Pattern deposit, e.g. by using masks
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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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- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
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- C30B25/18—Epitaxial-layer growth characterised by the substrate
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- 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
- C30B29/40—AIIIBV compounds wherein A is B, Al, Ga, In or Tl and B is N, P, As, Sb or Bi
- C30B29/403—AIII-nitrides
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Abstract
Description
도 2는 일 실시예에 따라 홀이 형성된 제1 버퍼층의 이미지이다.
도 3은 다른 일 실시예에 따른 질화 갈륨 기판의 제조 공정을 나타낸 공정 단면도이다.
도 4는 다른 일 실시예에 따른 질화 갈륨 기판의 제조 공정을 나타낸 공정 단면도이다.
도 5는 다른 일 실시예에 따른 질화 갈륨 기판의 제조 공정을 나타낸 공정 단면도이다.
111: 질화규소 영역 121: 제1 버퍼층
122: 제2 버퍼층 130: 중간층
140: GaN층 150: 절연층
152: 절연층 패턴 200: 질화갈륨 기판
1000: 증착 챔버 2000: 세정장치
3000: 반응기
Claims (20)
- 실리콘 기판 상에 상기 실리콘 기판이 노출되는 하나 이상의 홀을 갖는 제1 버퍼층을 형성하는 단계;
상기 하나 이상의 홀에 의해 노출된 실리콘 기판에 질화규소 영역을 형성하는 단계;
상기 제1 버퍼층 상에 하나 이상의 홀을 갖는 제2 버퍼층을 형성하는 단계;
상기 제2 버퍼층 상에 GaN층을 형성하는 단계를 포함하고,
상기 제1 버퍼층의 홀은 상기 제2 버퍼층에 의하여 채워진 질화 갈륨 기판의 제조 방법. - 삭제
- 제1항에서,
상기 하나 이상의 홀을 갖는 제1 버퍼층을 형성하는 단계는
제1 버퍼층을 증착하는 단계:
상기 제1 버퍼층을 물리적으로 세정하여 제1 버퍼층 상의 불순물 입자를 제거하는 단계를 포함하는 질화 갈륨 기판의 제조 방법. - 제3항에서,
상기 제1 버퍼층의 형성은 증착 챔버 내에서 이루어지고,
상기 물리적 세정은 증착 챔버 밖에서 이루어지며,
상기 물리적 세정은 나노 스프레이 또는 초음파 세정인 질화 갈륨 기판의 제조 방법. - 삭제
- 제1항에서,
상기 하나 이상의 홀을 갖는 제2 버퍼층을 형성하는 단계는
제2 버퍼층을 증착하는 단계:
상기 제2 버퍼층을 물리적으로 세정하여 제1 버퍼층 상의 불순물 입자를 제거하는 단계를 포함하는 질화 갈륨 기판의 제조 방법. - 제1항에서,
상기 GaN층 두께는 10 nm 내지 10 cm인 질화 갈륨 기판의 제조 방법. - 제1항에서,
상기 제1 버퍼층 또는 제2 버퍼층은 각각 AlN, TaN, TiN, HfN 및 HfTi 로 이루어진 군에서 선택되는 하나인 질화 갈륨 기판의 제조 방법. - 제1항에서,
상기 제2 버퍼층을 형성하는 단계와 상기 제2 버퍼층 상에 GaN층을 형성하는 단계 사이에, 상기 제2 버퍼층 상면의 테두리에 절연층 패턴을 형성하는 단계를 더 포함하고,
상기 제2 버퍼층 상에 GaN층을 형성하는 단계 이후에, 상기 절연층 패턴을 제거하는 단계를 더 포함하는 질화 갈륨 기판의 제조 방법. - 제1항에서,
상기 GaN층을 제외한 나머지 구조물들을 제거하는 단계를 더 포함하는 질화 갈륨 기판의 제조 방법. - 제1항에서,
상기 제2 버퍼층 상에 제n 버퍼층을 형성하는 단계를 더 포함하고,
상기 n은 3 내지 10의 정수이며,
상기 GaN층은 가장 상부에 위치하는 버퍼층 상에 형성되는 질화 갈륨 기판의 제조 방법. - 제1항에서,
상기 제2 버퍼층 상에 중간층을 형성하는 단계를 더 포함하고,
상기 GaN층은 상기 중간층 상에 형성되며,
상기 중간층은 GaN 또는 AlGaN을 포함하는 질화 갈륨 기판의 제조 방법. - 실리콘 기판 상에 하나 이상의 홀을 갖는 제1 버퍼층을 형성하는 단계;
상기 홀에 의해 노출된 실리콘 기판에 질화규소 영역을 형성하는 단계;
상기 제1 버퍼층 상에 GaN층을 형성하는 단계를 포함하는 질화 갈륨 기판의 제조 방법. - 제13항에서,
상기 질화규소 영역의 두께는 1Å 내지 10 nm인 질화 갈륨 기판의 제조 방법. - 제13항에서,
상기 제1 버퍼층의 형성과 상기 질화규소 영역의 형성은 동일 챔버 내에서 이루어지는 질화 갈륨 기판의 제조 방법. - 제13항에서,
상기 하나 이상의 홀을 갖는 제1 버퍼층을 형성하는 단계는
제1 버퍼층을 증착하는 단계:
상기 제1 버퍼층을 물리적으로 세정하여 제1 버퍼층 상의 불순물 입자를 제거하는 단계를 포함하는 질화 갈륨 기판의 제조 방법. - 제13항에서,
상기 실리콘 기판과 상기 GaN층은 서로 접촉하지 않는 질화 갈륨 기판의 제조 방법. - 제13항에서,
상기 제1 버퍼층을 형성하는 단계와 상기 제1 버퍼층 상에 GaN층을 형성하는 단계 사이에, 상기 제1 버퍼층 상면의 테두리에 절연층 패턴을 형성하는 단계를 더 포함하고,
상기 제1 버퍼층 상에 GaN층을 형성하는 단계 이후에, 상기 절연층 패턴을 제거하는 단계를 더 포함하는 질화 갈륨 기판의 제조 방법. - 제13항에서,
상기 제1 버퍼층 상에 제n 버퍼층을 형성하는 단계를 더 포함하고,
상기 n은 2 내지 10의 정수이며,
상기 GaN층은 복수개의 버퍼층 중 가장 상부에 위치하는 버퍼층 상에 형성되는 질화 갈륨 기판의 제조 방법. - 실리콘 기판 상에 하나 이상의 홀을 갖는 제1 버퍼층을 형성하는 단계;
상기 홀에 의해 노출된 실리콘 기판에 질화규소 영역을 형성하는 단계;
상기 제1 버퍼층 상에 하나 이상의 홀을 갖는 제2 버퍼층을 형성하는 단계;
상기 제2 버퍼층 상면의 테두리에 절연층 패턴을 형성하는 단계;
상기 제2 버퍼층 및 절연층 패턴 상에 GaN층을 형성하는 단계;
상기 절연층 패턴을 제거하는 단계를 포함하는 질화 갈륨 기판의 제조 방법.
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