KR100971851B1 - 벌크 단결정 갈륨-함유 질화물의 제조공정 - Google Patents
벌크 단결정 갈륨-함유 질화물의 제조공정 Download PDFInfo
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- KR100971851B1 KR100971851B1 KR1020047021345A KR20047021345A KR100971851B1 KR 100971851 B1 KR100971851 B1 KR 100971851B1 KR 1020047021345 A KR1020047021345 A KR 1020047021345A KR 20047021345 A KR20047021345 A KR 20047021345A KR 100971851 B1 KR100971851 B1 KR 100971851B1
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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
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- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
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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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- C30B7/00—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions
- C30B7/005—Epitaxial layer growth
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Abstract
Description
Claims (30)
- 가압된 반응용기 내에서 용매로서 암모니아를 사용하고 광화제로서 I족 원소 아지드화물 및 선택적으로 II족 원소 아지드화물을 사용하며, I족 원소 및 선택적으로 II족 원소 이온을 포함하는 초임계 암모니아-함유 용액이 용해 온도 및/또는 용해 압력에서 다음으로 제공되는 갈륨-함유 공급원료를 용해시키기 위해 먼저 얻어지며, 이어서 원하는 갈륨-함유 질화물이 결정화 온도 및/또는 결정화 압력하에서 적어도 하나의 시드의 표면상에서 상기 초임계 용액으로부터 결정화되고, 이 때 상기 결정화 온도 및/또는 결정화 압력은 결정화되는 상기 원하는 갈륨-함유 질화물의 용해도의 온도 계수 및 용해도의 압력 계수에 따라 선택되는 것을 특징으로 하는 광화제의 존재하에서 초임계 암모니아-함유 용액으로부터 벌크 갈륨-함유 질화물 단결정을 제조하는 공정.
- 갈륨-함유 질화물이 초임계 암모니아-함유 용액에서 용해도의 음의 온도 계수를 갖고 용해도의 양의 압력 계수를 가질 때, I족 및 선택적으로 II족 원소-함유 광화제의 존재하에, 가압된 반응용기 내에서, 광화제로서 I족 원소 아지드화물 및 선택적으로 II족 원소 아지드화물을 사용하며, I족 원소 및 선택적으로 II족 원소 이온을 포함하는 초임계 암모니아-함유 용액이 용해 온도 및/또는 용해 압력에서 다음으로 제공되는 갈륨-함유 공급원료를 용해시키기 위해 먼저 얻어지며, 이어서 갈륨-함유 질화물이 온도를 결정화 온도까지 및/또는 압력을 결정화 압력까지 이르게 하여 적어도 하나의 시드의 표면상에서 상기 초임계 용액으로부터 결정화되고, 상기 시드에 대해서 초임계 용액의 과포화가 달성되도록 상기 시드가 위치되는, 상기 가압된 반응용기의 적어도 결정화 영역에서 상기 결정화 온도가 용해 온도보다 높고, 및/또는 상기 결정화 압력이 용해 압력보다 낮으며, 이어서 상기 과포화된 초임계 용액은 질화물의 자발적 결정화가 무시될 정도의 수준으로 유지되는 반면, 상기 시드상에서 원하는 갈륨-함유 질화물의 결정화가 수행되는 것을 특징으로 하는 I족 및 선택적으로 II족 원소-함유 광화제의 존재하에서 초임계 암모니아-함유 용액으로부터 벌크 갈륨-함유 질화물 단결정을 제조하는 공정.
- 제1항 또는 제2항에 있어서, 상기 아지드화물의 분해시 제조된 기체상 질소는 재-결정화 단계가 시작되기 전에 시스템으로부터 적어도 부분적으로 배출되는 것을 특징으로 하는 공정.
- 제1항 또는 제2항에 있어서, 상기 갈륨-함유 질화물로서, 화학식 AlxGa1-xN (0≤x<1)를 갖는 질화물이 결정화되는 것을 특징으로 하는 공정
- 제1항 또는 제2항에 있어서, 상기 아지드화물 광화제는 LiN3, NaN3, KN3, CsN3 및 이들의 혼합물로 이루어진 군으로부터 선택되는 것을 특징으로 하는 공정.
- 제1항 또는 제2항에 있어서, 상기 사용된 광화제는 LiN3, NaN3, KN3 및 CsN3 로 이루어진 군으로부터 선택되는 적어도 하나의 화합물을 함유하는 것을 특징으로 하는 공정.
- 제6항에 있어서, 상기 광화제는 NaN3 및 KN3 를 함유하는 것을 특징으로 하는 공정.
- 제6항에 있어서, 상기 광화제는 NaN3 및 LiN3 를 함유하는 것을 특징으로 하는 공정.
- 제6항에 있어서, 상기 광화제는 KN3 및 LiN3 를 함유하는 것을 특징으로 하는 공정.
- 제6항에 있어서, 상기 광화제는 아지드화물 외에 다른 I족 및 선택적으로 II족 원소-함유 화합물을 또한 함유하는 것을 특징으로 하는 공정.
- 제1항 또는 제2항에 있어서, 상기 I족 원소 아지드화물은 1 : 200 내지 1 : 2의 범위의 아지드화물 대 암모니아의 몰비로 상기 시스템 내에 주입되는 것을 특징으로 하는 공정.
- 제1항 또는 제2항에 있어서, 107/㎠ 미만의 전위 밀도를 갖는 XIII족 원소 질화물의 적어도 하나의 결정층을 갖는 시드 결정이 사용되는 것을 특징으로 하는 공정.
- 제1항 또는 제2항에 있어서, 1차 기판상에 배열되고 결정성 질화물의 횡형 과잉성장이 쉽게 일어날 수 있는, 서로 적당히 이격된 다수의 표면을 갖는 구조물이 시드로서 사용되는 것을 특징으로 하는 공정.
- 제1항 또는 제2항에 있어서, 단결정 질화물층이 점점 두꺼워짐에 따라 같거나 보다 나은 품질을 갖도록 제조되는 것을 특징으로 하는 공정.
- 제1항 또는 제2항에 있어서, 상기 시드는 XIII족 원소의 결정성 질화물로 제조된 1차 기판을 함유하는 것을 특징으로 하는 공정.
- 제15항에 있어서, 상기 시드는 갈륨 질화물-GaN으로 제조된 1차 기판을 함유하는 것을 특징으로 하는 공정.
- 제15항에 있어서, 상기 시드는 사파이어, 스피넬, ZnO, SiC 또는 Si를 포함하는 결정성 물질로 제조된 1차 기판을 함유하며, 여기서 초임계 암모니아-함유 용액과 반응하는 물질로 제조된 상기 1차 기판은 단결정 질화물 층의 형성 전에 XIII족 원소 또는 금속성 Ag를 함유하는 질화물로 제조된 보호층으로 피복되는 것을 특징으로 하는 공정.
- 제1항 또는 제2항에 있어서, 얻어진 벌크 질화물 단결정은 갈륨 질화물-GaN으로 이루어지는 것을 특징으로 하는 공정.
- 제1항 또는 제2항에 있어서, 얻어진 벌크 질화물 단결정은 Ni, Cr, Co, Ti, Fe, Al, Ag, Mo, W, Si 및 Mn의 원소들 중 어느 하나를 함유하는 것을 특징으로 하는 공정.
- 제1항 또는 제2항에 있어서, 상기 시드의 일부 표면이 단결정 질화물 층의 형성 전에 마스크 층으로 피복되는 것을 특징으로 하는 공정.
- 삭제
- 청구항 1 또는 2에 의하여 벌크 단결정 갈륨-함유 질화물을 얻는 단계; 및상기 벌크 단결정 갈륨-함유 질화물을 슬라이싱(slicing)하는 단계;를 포함하는 단결정 갈륨-함유 질화물의 웨이퍼를 얻기 위한 방법.
- 삭제
- 삭제
- 청구항 1 또는 2에 있어서, 상기 광화제는 LiN3, NaN3, KN3 및 CsN3 로 이루어진 군으로부터 선택되는 적어도 두 개의 화합물을 포함하는 것을 특징으로 하는 벌크 갈륨-함유 질화물 단결정을 제조하는 공정.
- 삭제
- 삭제
- 삭제
- 제6항에 있어서, 상기 광화제는 NaN3, KN3 및 LiN3 를 함유하는 것을 특징으로 하는 벌크 갈륨-함유 질화물 단결정을 제조하는 공정.
- 삭제
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
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PLP-354740 | 2002-06-26 | ||
PL354740A PL205838B1 (pl) | 2002-06-26 | 2002-06-26 | Podłoże do epitaksji |
PLP-357697 | 2002-12-11 | ||
PL357697A PL232212B1 (pl) | 2002-12-11 | 2002-12-11 | Sposób otrzymywania objętościowego monokrystalicznego azotku zawierającego gal w środowisku nadkrytycznego rozpuszczalnika amoniakalnego |
PCT/PL2003/000040 WO2004003261A1 (en) | 2002-06-26 | 2003-04-17 | Process for obtaining of bulk monocrystallline gallium-containing nitride |
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KR20050016907A KR20050016907A (ko) | 2005-02-21 |
KR100971851B1 true KR100971851B1 (ko) | 2010-07-23 |
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US (1) | US7364619B2 (ko) |
EP (1) | EP1518009B1 (ko) |
JP (1) | JP4663319B2 (ko) |
KR (1) | KR100971851B1 (ko) |
CN (1) | CN100339512C (ko) |
AU (1) | AU2003238980A1 (ko) |
PL (1) | PL225422B1 (ko) |
WO (1) | WO2004003261A1 (ko) |
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EP1769105B1 (en) | 2004-06-11 | 2014-05-14 | Ammono S.A. | Bulk mono-crystalline gallium nitride and method for its preparation |
PL371405A1 (pl) | 2004-11-26 | 2006-05-29 | Ammono Sp.Z O.O. | Sposób wytwarzania objętościowych monokryształów metodą wzrostu na zarodku |
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JP2005530674A (ja) | 2005-10-13 |
CN1681974A (zh) | 2005-10-12 |
PL377151A1 (pl) | 2006-01-23 |
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AU2003238980A8 (en) | 2004-01-19 |
JP4663319B2 (ja) | 2011-04-06 |
KR20050016907A (ko) | 2005-02-21 |
WO2004003261A1 (en) | 2004-01-08 |
EP1518009B1 (en) | 2013-07-17 |
AU2003238980A1 (en) | 2004-01-19 |
US20060032428A1 (en) | 2006-02-16 |
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US7364619B2 (en) | 2008-04-29 |
PL225422B1 (pl) | 2017-04-28 |
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