KR20030036675A - 갈륨함유 질화물 벌크 단결정의 이종기판상의 형성법 - Google Patents
갈륨함유 질화물 벌크 단결정의 이종기판상의 형성법 Download PDFInfo
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- KR20030036675A KR20030036675A KR10-2003-7001729A KR20037001729A KR20030036675A KR 20030036675 A KR20030036675 A KR 20030036675A KR 20037001729 A KR20037001729 A KR 20037001729A KR 20030036675 A KR20030036675 A KR 20030036675A
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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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- C30B7/00—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions
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- H01S5/00—Semiconductor lasers
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- H—ELECTRICITY
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- H01S5/00—Semiconductor lasers
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/32—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures
- H01S5/323—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser
- H01S5/32308—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser emitting light at a wavelength less than 900 nm
- H01S5/32341—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser emitting light at a wavelength less than 900 nm blue laser based on GaN or GaP
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
- Y10T117/10—Apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
- Y10T117/10—Apparatus
- Y10T117/102—Apparatus for forming a platelet shape or a small diameter, elongate, generally cylindrical shape [e.g., whisker, fiber, needle, filament]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
- Y10T117/10—Apparatus
- Y10T117/1024—Apparatus for crystallization from liquid or supercritical state
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Abstract
Description
Claims (19)
- 오토클레이브 안에 알칼리 금속이온을 함유하는 초임계 암모니아용매를 형성하고, 이 초임계 암모니아에 갈륨함유 공급원료를 용해시키고, 초임계 용매에 갈륨함유 공급원료를 용해시킬 때, 보다 고온 및/또는 보다 저온의 조건에서 상기 공급원료가 용해된 초임계 용액으로부터 갈륨함유 질화물을, 구성원소로 산소를 포함시키지 않고, a0축의 격자정수가 2.8∼3.6 인 시드면에 결정시키는 것을 특징으로 하는 갈륨 함유 질화물의 벌크 단결정을 이종기판상에 성장시키는 방법.
- 제 1 항에 있어서,시드가 체심입방결정계의 Mo,W, 육방최밀충전결정계의 α-Hf, α-Zr,정방형결정계 다이아몬드, WC구조결정계 WC, W2C, ZnO구조결정계 SiC, TaN, NbN, AlN, 육방체결정(P6/mmm)계 AgB2, AuB2, HfB2,육방체결정(P63/mmc)계 γ-MoC, ε-MbN에서 선택되는 층을 적어도 표면에 가지는 갈륨 함유 질화물의 벌크 단결정을 이종기판상에 성장시키는 방법.
- 제 1 항에 있어서,오토클레이브 내에 온도차이를 가지는 적어도 두 개의 영역을 동시에 형성하고, 갈륨함유 공급원료를 저온의 용해영역에 배치하고, 시드를 고온의 결정화영역에 배치하는 것을 특징으로 하는 갈륨 함유 질화물의 벌크 단결정을 이종기판상에 성장시키는 방법.
- 제 1 항에 있어서,갈륨함유 질화물은 AlxGa1-x-yInyN(0≤x<1, 0≤y<1, 0≤x+y<1)인 것을 특징으로 하는 갈륨 함유 질화물의 벌크 단결정을 이종기판상에 성장시키는 방법.
- 제 1 항에 있어서,갈륨함유 질화물은 도너, 억셉터 또는 자기성 도프를 함유할 수 있는 것을 특징으로 하는 갈륨 함유 질화물의 벌크 단결정을 이종기판상에 성장시키는 방법.
- 제 1 항에 있어서,시드가 가지는 갈륨함유 질화물의 결정층의 표면결함밀도는 106/cm2이하인 것을 특징으로 하는 갈륨 함유 질화물의 벌크 단결정을 이종기판상에 성장시키는 방법.
- 제 1 항에 있어서,갈륨함유 질화물의 결정화는 100∼800℃, 바람직하게는 300∼600℃, 보다 바람직하게는 400∼550℃온도에서 행해지는 것을 특징으로 하는 갈륨 함유 질화물의벌크 단결정을 이종기판상에 성장시키는 방법.
- 제 1 항에 있어서,갈륨함유 질화물의 결정화는 100∼10000bar, 바람직하게는 1000∼5500bar, 보다 바람직하게는 1500∼3000bar 의 압력에서 행해지는 것을 특징으로 하는 갈륨 함유 질화물의 벌크 단결정을 이종기판상에 성장시키는 방법.
- 제 1 항에 있어서,초임계 용매내의 알칼리 금속 이온의 농도는 공급원료 및 갈륨함유 질화물의 특정 용해도를 확보할 수 있도록 조정되는 것을 특징으로 하는 갈륨 함유 질화물의 벌크 단결정을 이종기판상에 성장시키는 방법.
- 제 1 항에 있어서,초임계 용액내의 다른 성분에 대한 알칼리 금속이온의 몰비를 1:200∼1:2, 바람직하게는 1:100∼1:5, 보다 바람직하게는 1:20∼1:8의 범위내로 관리하는 갈륨 함유 질화물의 벌크 단결정을 이종기판상에 성장시키는 방법.
- 오토클레이브내에서 갈륨함유 공급원료를 암모니아와 알칼리 금속이온을 함유하는 초임계 용매에 용해시키고, 갈륨함유 질화물의 용해도가 음 온도계수를 가지는 초임계 용액을 공급하고, 상기 초임계 용액으로부터 갈륨함유 질화물의 용해도의 음온도계수를 이용하여 오토클레이브내로 배치된, 구성원소에 산소를 포함하지 않는, a0축의 격자정수가 2.8∼3.6 인 시드면에만 갈륨 함유 질화물의 결정을 선택적으로 성장시키는 것을 특징으로 하는 갈륨 함유 질화물의 벌크 단결정을 이종기판상에 형성하는 방법.
- 오토클레이브내에 갈륨함유 공급원료를 암모니아와 알칼리 금속이온을 함유하는 초임계 용매에 용해시키고, 갈륨함유 질화물의 용해도가 양(+) 압력계수를 가지는 초임계 용액을 공급하고, 상기 초임계 용액으로부터 갈륨함유 질화물의 용해도의 양압력계수를 이용하여 오토클레이브내로 배치된, 구성원소에 산소를 포함하지 않는, a0축의 격자정수가 2.8∼3.6 인 시드면에만 갈륨 함유 질화물의 결정을 선택적으로 성장시키는 것을 특징으로 하는 갈륨 함유 질화물의 벌크 단결정을 얻는 방법.
- 제 11 항 또는 제 12 항에 있어서,시드가 체심입방결정계인 Mo, W, 육방최밀충전결정계인 α-Hf, α-Zr, 정방형결정계 다이아몬드, WC구조결정계 WC, W2C, ZnO구조결정계 SiC, TaN, NbN, AlN, 육방체결정(P6/mmm)계 AgB2, AuB2, HfB2, 육방체결정(P63/mmc)계 γ-MoC, ε-MbN으로부터 선택되는 1층을 적어도 표면에 가지는 갈륨 함유 질화물의 벌크 단결정을 얻는 방법.
- 제 11 항 또는 제 12 항에 있어서,상기 갈륨함유 질화물이 질화갈륨인 것을 특징으로 하는 갈륨 함유 질화물의 벌크 단결정을 얻는 방법.
- 암모니아와 알칼리 금속이온을 함유하는 초임계 용매에 용해시키고, 갈륨함유 질화물의 용해도가 음 온도계수를 가지는 초임계 용액을, 적어도 오토클레이브내의 구성원소에 산소를 포함하지 않고, a0축의 격자정수가 2.8∼3.6 인 시드면을 가지는 시드가 배치된 영역에 있어서, 소정온도로 상승시키거나 소정의 압력으로 저하시켜 초임계용액의 용해도를 상기 시드에 대한 과포화 영역으로서, 자발적 결정화가 일어나지 않는 농도 이하로 조절하여 오토클레이브 내에 배치된 상기 시드면에만 갈륨함유 질화물의 결정을 선택적으로 성장시키는 것을 특징으로 하는 갈륨함유 질화물의 벌크 단결정을 결정화시키는 방법.
- 제 15 항에 있어서,오토클레이브내에 용해영역과 결정화영역이라는 두 개의 영역을 동시에 형성하고, 시드에 대한 초임계용액의 과포화 관리를 용해온도와 결정화온도의 조정에 의하여 행하는 것을 특징으로 하는 갈륨함유 질화물의 벌크 단결정을 결정화시키는 방법.
- 제 15 항에 있어서,결정화영역의 온도를 400∼600℃의 온도로 설정하는 것을 특징으로 하는 갈륨함유 질화물의 벌크 단결정을 결정화시키는 방법.
- 제 15 항에 있어서,오토클레이브내에 용해영역과 결정화영역이라는 두 개의 영역을 동시에 형성하고, 영역간의 온도차이를 150℃이하, 바람직하게는 100℃이하로 유지하는 것을 특징으로 하는 갈륨함유 질화물의 벌크 단결정을 결정화시키는 방법.
- 제 15 항에 있어서,오토클레이브내에 특정의 온도차이를 가지는 용해영역과 결정화영역이라는 두 개의 영역을 형성하고, 구성원소에 산소를 포함하지 않는, a0축의 격자정수가 2.8∼3.6 인 시드면을 가지는 시드에 대한 초임계 용액의 과포화 조정은, 시드의 총면적을 상회하는 총면적을 가지는 GaN 결정으로서 투여되는 갈륨함유 공급원료를 이용함으로서 행해지는 것을 특징으로 하는 갈륨함유 질화물의 벌크 단결정을 결정화시키는 방법.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PLP-347918 | 2001-06-06 | ||
PL347918A PL207400B1 (pl) | 2001-06-06 | 2001-06-06 | Sposób i urządzenie do otrzymywania objętościowego monokryształu azotku zawierającego gal |
PL35037501A PL350375A1 (en) | 2001-10-26 | 2001-10-26 | Epitaxial layer substrate |
PLP-350375 | 2001-10-26 | ||
PCT/JP2002/005626 WO2002101126A1 (en) | 2001-06-06 | 2002-06-06 | Method of forming gallium-containing nitride bulk single crystal on heterogeneous substrate |
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KR20030036675A true KR20030036675A (ko) | 2003-05-09 |
KR100865348B1 KR100865348B1 (ko) | 2008-10-27 |
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