KR100448662B1 - 질화물반도체소자 및 그 제조방법 - Google Patents
질화물반도체소자 및 그 제조방법 Download PDFInfo
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- KR100448662B1 KR100448662B1 KR10-2002-0032837A KR20020032837A KR100448662B1 KR 100448662 B1 KR100448662 B1 KR 100448662B1 KR 20020032837 A KR20020032837 A KR 20020032837A KR 100448662 B1 KR100448662 B1 KR 100448662B1
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- South Korea
- Prior art keywords
- layer
- active layer
- nitride semiconductor
- barrier layer
- semiconductor device
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- Expired - Fee Related
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 65
- 150000004767 nitrides Chemical class 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims description 33
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 230000004888 barrier function Effects 0.000 claims abstract description 63
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000012535 impurity Substances 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims description 19
- 238000005530 etching Methods 0.000 claims description 10
- 238000010030 laminating Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 199
- 229910002704 AlGaN Inorganic materials 0.000 description 34
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 33
- 229910002601 GaN Inorganic materials 0.000 description 32
- 239000010408 film Substances 0.000 description 32
- 239000000758 substrate Substances 0.000 description 27
- 239000013078 crystal Substances 0.000 description 15
- 229910052594 sapphire Inorganic materials 0.000 description 12
- 239000010980 sapphire Substances 0.000 description 12
- 235000012431 wafers Nutrition 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 230000007547 defect Effects 0.000 description 6
- 239000011777 magnesium Substances 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 239000012159 carrier gas Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 3
- UIUXUFNYAYAMOE-UHFFFAOYSA-N methylsilane Chemical compound [SiH3]C UIUXUFNYAYAMOE-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- XCZXGTMEAKBVPV-UHFFFAOYSA-N trimethylgallium Chemical compound C[Ga](C)C XCZXGTMEAKBVPV-UHFFFAOYSA-N 0.000 description 2
- IBEFSUTVZWZJEL-UHFFFAOYSA-N trimethylindium Chemical compound C[In](C)C IBEFSUTVZWZJEL-UHFFFAOYSA-N 0.000 description 2
- KADIEFRANBIGHU-UHFFFAOYSA-N CC[Mg]C1C=CC=C1 Chemical compound CC[Mg]C1C=CC=C1 KADIEFRANBIGHU-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 208000012868 Overgrowth Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/81—Bodies
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/81—Bodies
- H10H20/813—Bodies having a plurality of light-emitting regions, e.g. multi-junction LEDs or light-emitting devices having photoluminescent regions within the bodies
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/81—Bodies
- H10H20/816—Bodies having carrier transport control structures, e.g. highly-doped semiconductor layers or current-blocking structures
- H10H20/8162—Current-blocking structures
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/81—Bodies
- H10H20/822—Materials of the light-emitting regions
- H10H20/824—Materials of the light-emitting regions comprising only Group III-V materials, e.g. GaP
- H10H20/825—Materials of the light-emitting regions comprising only Group III-V materials, e.g. GaP containing nitrogen, e.g. GaN
Landscapes
- Led Devices (AREA)
- Semiconductor Lasers (AREA)
- Junction Field-Effect Transistors (AREA)
Abstract
Description
Claims (13)
- 3족질화물반도체를 포함하고 있는 질화물반도체소자에 있어서,활성층;상기 활성층에 인접하고, 상기 활성층의 밴드갭(band-gap)보다 더 큰 밴드갭(band-gap)을 가지는 재료로 이루어진 장벽층;상기 활성층에서 관통전위(threading dislocation)를 둘러싸는 상기 장벽층과 동일 재료로 형성되고, 정점(vertex)를 가지는 매립부;및상기 정점(vertex)이 위치되어 있는 곳에 1E16/cc 내지 1E17/cc범위의 불순물농도를 가지는 반도체층을 포함하는 질화물반도체소자.
- 제1항에 있어서, 상기 활성층은 단일 또는 다중 양자 우물 구조를 가지는 것을 특징으로 하는 질화물반도체소자.
- 제1항에 있어서, 상기 장벽층의 상기 재료가 상기 활성층상의 계면(interface)으로 둘러싸여져 있는 공부(孔部)를 메워서, 매립부로서 공부(孔部)의 표면을 평탄하게하는 것을 특징으로 하는 질화물반도체소자.
- 제1항에 있어서, 상기 매립부는 원추형상(cone-shape) 또는 절단된 원추형상(truncated cone shape),또는 이것들이 연결된 형상을 가지는 것을 특징으로 하는 질화물반도체소자.
- 제1항에 있어서, 상기 3족질화물반도체는 (AlxGa1-x)1-yInyN(0≤x≤1,0≤y≤1)인것을 특징으로 하는 질화물반도체소자.
- 제5항에 있어서, 상기 장벽층과 상기 활성층사이에서 제공되는 저온 장벽층을 부가적으로 포함하고, 상기 저온장벽층은 상기 활성층의 성장 온도와 동일한 온도에서 상기 장벽층과 같은 재료로 형성되는 것을 특징으로 하는 질화물반도체소자.
- 제6항에 있어서, 상기 저온 장벽층은 상기 장벽층의 AlN조성비보다 낮은 AlN조성비를 가지는 것을 특징으로 하는 질화물반도체.
- 3족질화물반도체를 포함하고, 상기 활성층에 인접하고 상기 활성층보다 큰 밴드갭(band-gap)을 가지는 재료로 형성되는 활성층과 장벽층을 가지는 질화물반도체소자의 제조방법으로서,1E16/cc 내지 1E17/cc범위의 불순물 농도를 가지는 반도체층을 형성하는 공정;활성층에서 관통전위(threading dislocation)에 기인하는 공부(孔部)를 가지는 반도체층상에 활성층을 형성하는 공정;및관통전위(threading dislocation)를 둘러싸고 공부(孔部)의 한측면에 의해 제한되는 계면(interface)를 가지는 매립부를 형성하기 위해 활성층상에 장벽층의 재료를 적층하는 공정을 포함하는 것을 특징으로 하는 질화물반도체소자의 제조방법
- 제8항에 있어서, 상기 반도체층 형성 공정은 상기 활성층 성장 전에 600∼850℃의 온도에서 행해지는 것을 특징으로 하는 질화물반도체소자의 제조방법.
- 제8항에 있어서, 상기 활성층 형성공정은 상기 활성층이 적층된후에, 상기 활성층을 에칭(etching)하는 공정을 포함하는 것을 특징으로 하는 질화물반도체소자의 제조방법.
- 제10항에 있어서, 상기 에칭(etching)공정은 관통전위(threading dislocation)를 따라 식각(蝕刻)이 반도체층에 도달한 시점에서 상기 에칭(etching)이 종료되는 것을 특징으로 하는 질화물반도체소자의 제조방법.
- 제8항에 있어서, 피트(pit)형성 공정과 재료적층공정사이에 활성층의 성장온도와 같은 온도에서 장벽층과 동일한 재료인 저온 장벽층 형성 공정을 부가적으로 포함하는 것을 특징으로 하는 질화물반도체소자의 제조방법.
- 제12항에 있어서, 상기 저온 장벽층은 AlN 조성비가 장벽층의 AlN조성비보다 낮은 것을 특징으로 하는 질화물반도체소자의 제조방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JPJP-P-2001-00177383 | 2001-06-12 | ||
JP2001177383A JP3909811B2 (ja) | 2001-06-12 | 2001-06-12 | 窒化物半導体素子及びその製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20030006990A KR20030006990A (ko) | 2003-01-23 |
KR100448662B1 true KR100448662B1 (ko) | 2004-09-13 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR10-2002-0032837A Expired - Fee Related KR100448662B1 (ko) | 2001-06-12 | 2002-06-12 | 질화물반도체소자 및 그 제조방법 |
Country Status (7)
Country | Link |
---|---|
US (1) | US6693303B2 (ko) |
EP (1) | EP1267422B1 (ko) |
JP (1) | JP3909811B2 (ko) |
KR (1) | KR100448662B1 (ko) |
CN (1) | CN1249820C (ko) |
DE (1) | DE60217943T2 (ko) |
TW (1) | TW569470B (ko) |
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US20030001161A1 (en) | 2003-01-02 |
TW569470B (en) | 2004-01-01 |
DE60217943D1 (de) | 2007-03-22 |
KR20030006990A (ko) | 2003-01-23 |
JP3909811B2 (ja) | 2007-04-25 |
DE60217943T2 (de) | 2007-10-18 |
EP1267422B1 (en) | 2007-01-31 |
EP1267422A3 (en) | 2005-08-03 |
EP1267422A2 (en) | 2002-12-18 |
JP2002368269A (ja) | 2002-12-20 |
CN1249820C (zh) | 2006-04-05 |
CN1391293A (zh) | 2003-01-15 |
US6693303B2 (en) | 2004-02-17 |
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