KR101422452B1 - 질화물 반도체 발광 소자 및 그 제조 방법 - Google Patents
질화물 반도체 발광 소자 및 그 제조 방법 Download PDFInfo
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- KR101422452B1 KR101422452B1 KR1020147005124A KR20147005124A KR101422452B1 KR 101422452 B1 KR101422452 B1 KR 101422452B1 KR 1020147005124 A KR1020147005124 A KR 1020147005124A KR 20147005124 A KR20147005124 A KR 20147005124A KR 101422452 B1 KR101422452 B1 KR 101422452B1
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- 150000004767 nitrides Chemical class 0.000 title claims abstract description 79
- 239000004065 semiconductor Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title abstract description 14
- 229910002704 AlGaN Inorganic materials 0.000 claims abstract description 72
- 239000000203 mixture Substances 0.000 claims abstract description 38
- 238000005253 cladding Methods 0.000 claims abstract description 27
- 230000004888 barrier function Effects 0.000 claims description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 2
- 238000001947 vapour-phase growth Methods 0.000 claims 2
- 229910002601 GaN Inorganic materials 0.000 description 65
- 239000011777 magnesium Substances 0.000 description 37
- 239000007789 gas Substances 0.000 description 27
- 230000000052 comparative effect Effects 0.000 description 23
- 239000000758 substrate Substances 0.000 description 18
- XCZXGTMEAKBVPV-UHFFFAOYSA-N trimethylgallium Chemical compound C[Ga](C)C XCZXGTMEAKBVPV-UHFFFAOYSA-N 0.000 description 10
- 238000009792 diffusion process Methods 0.000 description 7
- 229910052738 indium Inorganic materials 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 5
- 150000002500 ions Chemical group 0.000 description 5
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 4
- 239000012159 carrier gas Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 229910052594 sapphire Inorganic materials 0.000 description 3
- 239000010980 sapphire Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- RGGPNXQUMRMPRA-UHFFFAOYSA-N triethylgallium Chemical compound CC[Ga](CC)CC RGGPNXQUMRMPRA-UHFFFAOYSA-N 0.000 description 2
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 2
- 238000000927 vapour-phase epitaxy Methods 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- QBJCZLXULXFYCK-UHFFFAOYSA-N magnesium;cyclopenta-1,3-diene Chemical compound [Mg+2].C1C=CC=[C-]1.C1C=CC=[C-]1 QBJCZLXULXFYCK-UHFFFAOYSA-N 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- IBEFSUTVZWZJEL-UHFFFAOYSA-N trimethylindium Chemical compound C[In](C)C IBEFSUTVZWZJEL-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
도 2는 질화물 반도체 발광 소자에 있어서의 Mg의 깊이 프로파일을 도시하는 도면.
도 3은 질화물 반도체 발광 소자의 발광 효율을 제1 비교예와 대비해서 도시하는 도면.
도 4는 제1 비교예의 질화물 반도체 발광 소자를 도시하는 단면도.
도 5는 질화물 반도체 발광 소자의 발광 효율을 제2 비교예와 대비해서 도시하는 도면.
도 6은 제2 비교예의 질화물 반도체 발광 소자를 도시하는 단면도.
도 7은 질화물 반도체 발광 소자의 발광 효율을 제3 비교예와 대비해서 도시하는 도면.
도 8은 질화물 반도체 발광 소자의 제조 공정을 도시하는 단면도.
도 9는 질화물 반도체 발광 소자의 제조 공정을 도시하는 단면도.
도 10은 질화물 반도체 발광 소자의 제조 공정을 도시하는 단면도.
도 11은 질화물 반도체 발광 소자의 제조 공정을 도시하는 단면도.
11: 기판
12: GaN층
13: n형 GaN 클래드층
14: MQW 활성층
15: GaN 장벽층
16: InGaN 웰층
17: GaN 캡층
18: AlGaN 캡층
19: p형 AlGaN 전자 장벽층
20: p형 GaN 클래드층
21: p형 GaN 콘택트층
22: p측 전극
23: n측 전극
Claims (3)
- n형 질화물 반도체를 갖는 제1 클래드층과,
상기 제1 클래드층 위에 형성되고, In을 포함하는 질화물 반도체를 가지며, 장벽층과 웰층이 교대로 적층된 다중 양자 웰 구조의 활성층과,
상기 활성층 위에 상기 장벽층을 형성하는 온도와 동일한 제1 온도에서 형성되고, Mg 농도가 1E18cm-3 이하인 GaN층과,
상기 GaN층 위에 상기 제1 온도에서 형성되고, 제1 Al 조성비가 0보다 크고 0.01 이하, Mg 농도가 1E18cm-3 이하, 두께가 상기 GaN층의 두께보다 얇은 제1 AlGaN층과,
상기 제1 AlGaN층 위에 형성되고, 상기 제1 Al 조성비보다 높은 제2 Al 조성비를 갖고, 또한 상기 GaN층 및 상기 제1 AlGaN층보다 다량으로 Mg를 함유하는 p형 제2 AlGaN층과,
상기 제2 AlGaN층 위에 형성되고, p형 질화물 반도체를 갖는 제2 클래드층을 구비하는 것을 특징으로 하는 질화물 반도체 발광 소자. - 제1항에 있어서, 상기 GaN층에 접하는 층이 상기 웰층인 것을 특징으로 하는 질화물 반도체 발광 소자.
- n형 질화물 반도체를 갖는 제1 클래드층 위에, In을 포함하는 질화물 반도체를 갖고, 장벽층과 웰층이 교대로 적층된 다중 양자 웰 구조의 활성층을 형성하는 공정과,
상기 활성층 위에, Mg 농도가 1E18cm-3 이하인 GaN층 및 제1 Al 조성비가 0보다 크고 0.01 이하, Mg 농도가 1E18cm-3 이하, 두께가 상기 GaN층의 두께보다 얇은 제1 AlGaN층을 순서대로, 유기 금속 기상 성장법에 의해 상기 장벽층을 형성하는 온도와 동일한 제1 성장 온도, 질소 가스 분위기 및 Mg의 무첨가 하에서 형성하는 공정과,
상기 제1 AlGaN층 위에, 상기 제1 Al 조성비보다 큰 제2 Al 조성비를 갖는 제2 AlGaN층을, 유기 금속 기상 성장법에 의해 상기 제1 성장 온도보다 높은 제2 성장 온도, 수소 가스를 포함하는 분위기 및 Mg의 첨가 하에서 형성하는 공정과,
상기 제2 AlGaN층 위에, p형 질화물 반도체를 갖는 제2 클래드층을 형성하는 공정을 구비하는 것을 특징으로 하는 질화물 반도체 발광 소자의 제조 방법.
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EP2518783B1 (en) * | 2009-12-21 | 2016-04-13 | Kabushiki Kaisha Toshiba | Nitride semiconductor light-emitting element and method for manufacturing same |
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US9312432B2 (en) * | 2012-03-13 | 2016-04-12 | Tsmc Solid State Lighting Ltd. | Growing an improved P-GaN layer of an LED through pressure ramping |
US20140203287A1 (en) * | 2012-07-21 | 2014-07-24 | Invenlux Limited | Nitride light-emitting device with current-blocking mechanism and method for fabricating the same |
KR20140074516A (ko) * | 2012-12-10 | 2014-06-18 | 서울바이오시스 주식회사 | 질화갈륨계 반도체층 성장 방법 및 발광 소자 제조 방법 |
JP6001446B2 (ja) * | 2012-12-28 | 2016-10-05 | 株式会社東芝 | 半導体発光素子及びその製造方法 |
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EP2881982B1 (en) * | 2013-12-05 | 2019-09-04 | IMEC vzw | Method for fabricating cmos compatible contact layers in semiconductor devices |
EP2988339B1 (en) * | 2014-08-20 | 2019-03-27 | LG Innotek Co., Ltd. | Light emitting device |
CN104392916A (zh) * | 2014-11-17 | 2015-03-04 | 中国科学院半导体研究所 | 制备低比接触电阻率的p-GaN欧姆接触的方法 |
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