KR20040018324A - 반도체 소자 - Google Patents
반도체 소자 Download PDFInfo
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- KR20040018324A KR20040018324A KR10-2003-7008891A KR20037008891A KR20040018324A KR 20040018324 A KR20040018324 A KR 20040018324A KR 20037008891 A KR20037008891 A KR 20037008891A KR 20040018324 A KR20040018324 A KR 20040018324A
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- Prior art keywords
- layer
- barrier layer
- barrier
- well
- nitride semiconductor
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- 230000004888 barrier function Effects 0.000 claims abstract description 590
- 150000004767 nitrides Chemical class 0.000 claims abstract description 221
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- 239000007789 gas Substances 0.000 description 18
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- 230000010355 oscillation Effects 0.000 description 17
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- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 10
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- IBEFSUTVZWZJEL-UHFFFAOYSA-N trimethylindium Chemical compound C[In](C)C IBEFSUTVZWZJEL-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910000980 Aluminium gallium arsenide Inorganic materials 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/34—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers
- H01S5/343—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser
- H01S5/34333—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser with a well layer based on Ga(In)N or Ga(In)P, e.g. blue laser
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/02—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
- H01L33/04—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a quantum effect structure or superlattice, e.g. tunnel junction
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/02—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
- H01L33/04—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a quantum effect structure or superlattice, e.g. tunnel junction
- H01L33/06—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a quantum effect structure or superlattice, e.g. tunnel junction within the light emitting region, e.g. quantum confinement structure or tunnel barrier
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- H—ELECTRICITY
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- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/20—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers
- H01S5/2004—Confining in the direction perpendicular to the layer structure
- H01S5/2009—Confining in the direction perpendicular to the layer structure by using electron barrier layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/305—Structure or shape of the active region; Materials used for the active region characterised by the doping materials used in the laser structure
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- H—ELECTRICITY
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- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/305—Structure or shape of the active region; Materials used for the active region characterised by the doping materials used in the laser structure
- H01S5/3086—Structure or shape of the active region; Materials used for the active region characterised by the doping materials used in the laser structure doping of the active layer
- H01S5/309—Structure or shape of the active region; Materials used for the active region characterised by the doping materials used in the laser structure doping of the active layer doping of barrier layers that confine charge carriers in the laser structure, e.g. the barriers in a quantum well structure
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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
- H01S5/3211—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures characterised by special cladding layers, e.g. details on band-discontinuities
- H01S5/3216—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures characterised by special cladding layers, e.g. details on band-discontinuities quantum well or superlattice cladding layers
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- H01S5/00—Semiconductor lasers
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/34—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers
- H01S5/3407—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers characterised by special barrier layers
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- H—ELECTRICITY
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- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/34—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers
- H01S5/3409—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers special GRINSCH structures
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- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Semiconductor Lasers (AREA)
- Led Devices (AREA)
- Bipolar Transistors (AREA)
Abstract
Description
Claims (27)
- 우물층과 장벽층을 가지는 양자 우물 구조의 활성층이 제 1 도전형층 및 제 2 도전형층에 의해 협지된 구조를 가지는 반도체 소자에 있어서,상기 활성층 내에서 적어도 하나의 우물층을 협지하여, 상기 제 1 도전형층측에 제 1 장벽층이, 상기 제 2 도전형층측에 제 2 장벽층이 설치되는 동시에,제 2 장벽층이 제 1 장벽층보다도 밴드 갭 에너지가 작은 것을 특징으로 하는 반도체 소자.
- 제 1 항에 있어서,상기 제 1 도전형층이 n형 질화물 반도체를 가지는 n형층이고, 상기 제 2 도전형층이 p형 질화물 반도체를 가지는 p형층이며, 상기 활성층이 질화물 반도체로 이루어지는 우물층과 장벽층을 가지는 동시에, 제 1 도전형층, 활성층, 제 2 도전형층의 순서로 적층되어 있는 것을 특징으로 하는 반도체 소자.
- 제 1 항 또는 제 2 항에 있어서,상기 활성층 내의 장벽층으로서, 상기 제 1 장벽층이 제 1 도전형층의 가장 가까운 곳에 배치되고, 상기 제 2 장벽층이 제 2 도전형층의 가장 가까운 곳에 배치된 장벽층인 것을 특징으로 하는 반도체 소자.
- 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,상기 제 2 장벽층은 활성층 내에서 가장 외측에 배치된 층인 것을 특징으로 하는 반도체 소자.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,상기 제 1 도전형층이 상기 제 1 장벽층보다도 밴드 갭 에너지가 작은 제 1 반도체층을 가지는 것을 특징으로 하는 질화물 반도체 소자.
- 제 1 항 내지 제 5 항 중 어느 한 항에 있어서,상기 제 2 도전형층이 상기 제 1 장벽층보다도 밴드 갭 에너지가 큰 캐리어 가둠층을 가지는 것을 특징으로 하는 반도체 소자.
- 제 6 항에 있어서,상기 제 2 도전형층이 상기 제 1 장벽층보다도 밴드 갭 에너지가 작은 제 2 반도체층을 가지고, 상기 캐리어 가둠층을 사이에 두고 활성층으로부터 이간되어 설치되어 있는 것을 특징으로 하는 반도체 소자.
- 제 6 항 또는 제 7 항에 있어서,상기 캐리어 가둠층에 p형 불순물이 도프되어 있는 것을 특징으로 하는 반도체 소자.
- 제 6 항 내지 제 8 항 중 어느 한 항에 있어서,상기 제 1 반도체층 및/또는 캐리어 가둠층이 활성층에 접하여 형성되어 있는 것을 특징으로 하는 반도체 소자.
- 제 1 항 내지 제 9 항 중 어느 한 항에 있어서,상기 제 1 장벽층과 제 2 장벽층의 밴드 갭 에너지 차가 0.02eV 이상인 것을 특징으로 하는 질화물 반도체 소자.
- 제 1 항 내지 제 10 항 중 어느 한 항에 있어서,상기 활성층이 우물층을 복수개 가지는 다중 양자 우물 구조이며, 상기 제 1 장벽층과 제 2 장벽층 사이에 제 1 장벽층, 제 2 장벽층과 우물층을 사이에 두고 배치된 내부 장벽층을 가지고, 상기 내부 장벽층이 제 2 장벽층과 밴드 갭 에너지가 상이한 것을 특징으로 하는 질화물 반도체 소자.
- 제 11 항에 있어서,상기 내부 장벽층이 제 2 장벽층보다도 밴드 갭 에너지가 큰 것을 특징으로 하는 질화물 반도체 소자.
- 제 11 항 또는 제 12 항에 있어서,상기 제 1 장벽층이 상기 내부 장벽층보다도 밴드 갭 에너지가 큰 것을 특징으로 하는 질화물 반도체 소자.
- 제 1 항 내지 제 13 항 중 어느 한 항에 있어서,상기 활성층이 질화물 반도체로 이루어지는 우물층과 장벽층을 가지고, 제 1 도전형층이 질화물 반도체를 가지며, 제 2 도전형층이 질화물 반도체를 가지는 반도체 소자에 있어서,상기 우물층이 GaN, 또는 GaN보다도 밴드 갭 에너지가 큰 Al을 함유하는 질화물 반도체로 이루어지는 것을 특징으로 하는 반도체 소자.
- 제 14 항에 있어서,상기 우물층의 조성이 GaN, AlxGa1-xN(0<x≤1), AlxInyGa1-x-yN(0<x≤1, 0<y≤1, x+y<1) 중 어느 하나인 것을 특징으로 하는 반도체 소자.
- 제 14 항 또는 제 15 항에 있어서,상기 장벽층의 조성이 AluInvGa1-u-vN(0<u≤1, 0≤v≤1, u+v<1)인 것을 특징으로 하는 반도체 소자.
- 제 1 항 내지 제 13 항 중 어느 한 항에 있어서,상기 활성층이 질화물 반도체로 이루어지는 우물층과 장벽층을 가지고, 제 1 도전형층이 질화물 반도체를 가지며, 제 2 도전형층이 질화물 반도체를 가지는 반도체 소자에 있어서,상기 우물층의 조성이 InzGa1-zN(0<z<1)이고, 상기 장벽층의 조성이 AluInvGa1-u-vN(0<u≤1, 0≤v≤1, u+v<1)인 것을 특징으로 하는 반도체 소자.
- 제 14 항 내지 제 17 항 중 어느 한 항에 있어서,상기 제 1 장벽층의 Al 혼성결정비 u와 상기 우물층의 Al 혼성결정비 x의 차가 0.1 이상, u-x≥0.1인 것을 특징으로 하는 반도체 소자.
- 제 14 항 내지 제 18 항 중 어느 한 항에 있어서,상기 제 1 반도체층 및 제 2 반도체층 중 적어도 한쪽이 Al을 함유하는 질화물 반도체로 이루어지는 것을 특징으로 하는 반도체 소자.
- 제 6 항 내지 제 19 항 중 어느 한 항에 있어서,상기 제 1 장벽층의 막 두께가 상기 제 2 장벽층의 막 두께보다도 얇은 것을 특징으로 하는 반도체 소자.
- 제 1 항 내지 제 20 항 중 어느 한 항에 있어서,상기 제 1 장벽층의 막 두께가 30Å 이상 150Å 이하의 범위인 것을 특징으로 하는 반도체 소자.
- 제 1 항 내지 제 21 항 중 어느 한 항에 있어서,상기 제 2 장벽층의 막 두께가 50Å 이상 300Å 이하의 범위인 것을 특징으로 하는 반도체 소자.
- 제 6 항 내지 제 22 항 중 어느 한 항에 있어서,상기 제 1 도전형층, 제 2 도전형층 내에 상기 제 1 반도체층, 제 2 반도체층을 사이에 두고, 활성층으로부터 이간하여 클래드층이 각각 설치되어 있는 동시에,제 1 도전형층 내의 클래드층이 제 1 반도체층보다도 밴드 갭 에너지가 크고, 제 2 도전형층 내의 클래드층이 제 2 반도체층보다도 밴드 갭 에너지가 큰 것을 특징으로 하는 반도체 소자.
- 제 5 항 내지 제 22 항 중 어느 한 항에 있어서,상기 제 1 도전형층, 제 2 도전형층에 각각 설치된 광 가둠의 클래드층에 협지된 활성층에 의해 도파로가 형성된 발광 소자에 있어서,제 1 도전형층 내에 설치된 광가이드층이 상기 제 1 반도체층을 가지는 것을 특징으로 하는 질화물 반도체 소자.
- 제 24 항에 있어서,상기 제 2 도전형층 내에 설치된 광가이드층이 상기 제 1 장벽층보다도 밴드 갭 에너지가 작은 제 2 반도체층을 가지는 것을 특징으로 하는 반도체 소자.
- 제 24 항 또는 제 25 항에 있어서,상기 제 1 반도체층, 제 2 반도체층 중 적어도 한쪽이 Al을 함유하는 질화물 반도체로 이루어지고, 상기 Al을 함유하는 질화물 반도체의 Al 혼성결정비가 상기 질화물 반도체로 이루어지는 제 1 장벽층의 Al 혼성결정비보다도 작은 것을 특징으로 하는 질화물 반도체 소자.
- 제 23 항 내지 제 26 항 중 어느 한 항에 있어서,상기 제 1 장벽층이 상기 클래드층보다도 밴드 갭 에너지가 큰 것을 특징으로 하는 질화물 반도체 소자.
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EP1453160B1 (en) | 2008-02-27 |
CN1484880A (zh) | 2004-03-24 |
TWI275220B (en) | 2007-03-01 |
JP2003273473A (ja) | 2003-09-26 |
DE60225322D1 (de) | 2008-04-10 |
US7667226B2 (en) | 2010-02-23 |
EP1453160A4 (en) | 2005-07-20 |
CN1236535C (zh) | 2006-01-11 |
JP4328366B2 (ja) | 2009-09-09 |
TW200303105A (en) | 2003-08-16 |
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