KR20020052968A - 질화물반도체의 제조방법, 질화물반도체소자의 제조방법및 그것을 이용한 질화물반도체소자 - Google Patents
질화물반도체의 제조방법, 질화물반도체소자의 제조방법및 그것을 이용한 질화물반도체소자 Download PDFInfo
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- KR20020052968A KR20020052968A KR1020010083800A KR20010083800A KR20020052968A KR 20020052968 A KR20020052968 A KR 20020052968A KR 1020010083800 A KR1020010083800 A KR 1020010083800A KR 20010083800 A KR20010083800 A KR 20010083800A KR 20020052968 A KR20020052968 A KR 20020052968A
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- group iii
- nitride semiconductor
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 135
- 150000004767 nitrides Chemical class 0.000 title claims abstract description 98
- 238000004519 manufacturing process Methods 0.000 title claims description 34
- 239000002019 doping agent Substances 0.000 claims abstract description 75
- 239000000758 substrate Substances 0.000 claims abstract description 33
- 239000010410 layer Substances 0.000 claims description 355
- 238000000034 method Methods 0.000 claims description 57
- 238000005253 cladding Methods 0.000 claims description 32
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 229910052738 indium Inorganic materials 0.000 claims description 16
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 16
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052733 gallium Inorganic materials 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 229910002601 GaN Inorganic materials 0.000 abstract description 27
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 abstract description 25
- 239000012535 impurity Substances 0.000 abstract description 21
- RNQKDQAVIXDKAG-UHFFFAOYSA-N aluminum gallium Chemical compound [Al].[Ga] RNQKDQAVIXDKAG-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011777 magnesium Substances 0.000 description 52
- XCZXGTMEAKBVPV-UHFFFAOYSA-N trimethylgallium Chemical compound C[Ga](C)C XCZXGTMEAKBVPV-UHFFFAOYSA-N 0.000 description 13
- 229910002704 AlGaN Inorganic materials 0.000 description 7
- 230000004888 barrier function Effects 0.000 description 7
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- IBEFSUTVZWZJEL-UHFFFAOYSA-N trimethylindium Chemical compound C[In](C)C IBEFSUTVZWZJEL-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 125000005842 heteroatom Chemical group 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 238000001947 vapour-phase growth Methods 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 244000154870 Viola adunca Species 0.000 description 1
- 235000005811 Viola adunca Nutrition 0.000 description 1
- 235000013487 Viola odorata Nutrition 0.000 description 1
- 235000002254 Viola papilionacea Nutrition 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 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
- 150000004678 hydrides Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003475 lamination 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
- 238000000691 measurement method Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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Abstract
Description
Claims (22)
- 기판 상에 제 1의 III족 소스 및 질소를 포함하는 V족 소스를 공급함으로써, 제 1의 III족 질화물로 이루어지는 제 1 반도체층을 성장하는 제 1 공정과,상기 제 1 반도체층 상에 제 2의 III족 소스 및 질소를 포함하는 V족 소스를 공급함으로써, 상기 제 1 반도체층 상에 제 2의 III족 질화물로 이루어지는 제 2 반도체층을 성장하는 제 2 공정을 구비하고,상기 제 1 공정 및 제 2 공정 중의 적어도 하나는 상기 기판 상에 p형 도펀트를 공급하는 공정을 포함하며,상기 제 1 반도체층과 상기 제 2 반도체층의 계면의 근방영역은 상기 p형 도펀트의 농도가 국소적으로 증대하도록 성장하는 것을 특징으로 하는 질화물반도체의 제조방법.
- 제 1항에 있어서,상기 제 1의 III족 소스는 갈륨을 포함하고, 상기 제 2의 III족 소스는 알루미늄 또는 인듐을 포함하는 것을 특징으로 하는 질화물반도체의 제조방법.
- 제 1항에 있어서,상기 제 1의 III족 소스는 갈륨으로 이루어지고, 상기 제 2의 III족 소스는 갈륨과, 알루미늄 또는 인듐을 포함하는 것을 특징으로 하는 질화물반도체의 제조방법.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서,상기 제 1 공정 및 제 2 공정이 모두 상기 p형 도펀트를 공급하는 경우에, 상기 각 p형 도펀트의 공급량은 거의 동등한 것을 특징으로 하는 질화물반도체의 제조방법.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서,상기 제 1 공정 및 제 2 공정에서의 상기 p형 도펀트의 공급량은 다른 것을 특징으로 하는 질화물반도체의 제조방법.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서,상기 제 1 반도체층의 성장시에 상기 p형 도펀트를 공급하는 경우에, 상기 p형 도펀트를 상기 제 1 반도체층을 성장하기 전에 공급하기 시작하는 것을 특징으로 하는 질화물반도체의 제조방법.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서,상기 제 2 반도체층의 성장시에 상기 p형 도펀트를 공급하는 경우에, 상기 p형 도펀트를 상기 제 2 반도체층을 성장하기 전에 공급하기 시작하는 것을 특징으로 하는 질화물반도체의 제조방법.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서,상기 p형 도펀트의 농도의 피크는 상기 제 2 반도체층 중에 위치하는 것을 특징으로 하는 질화물반도체의 제조방법.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서,상기 제 2의 III족 소스는 복수의 III족 원소를 포함하고,상기 제 2 반도체층에서의 상기 복수의 III족 원소 중 조성비가 작은 원소의 농도의 피크위치와, 상기 p형 도펀트의 피크위치는 서로 다른 것을 특징으로 하는 질화물반도체의 제조방법.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서,상기 p형 도펀트의 농도는 약 3 ×1019㎝-3이하인 것을 특징으로 하는 질화물반도체의 제조방법.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서,상기 제 2 반도체층의 두께는 약 1.5㎚ 이상인 것을 특징으로 하는 질화물반도체의 제조방법.
- 기판 상에 제 1 질화물반도체로 이루어지는 활성층을 성장하는 제 1 공정과,상기 활성층 상에 제 2 질화물반도체로 이루어져 상기 활성층을 보호하는 p형 캡층을 성장하는 제 2 공정과,상기 p형 캡층 상에 제 3 질화물반도체층으로 이루어지는 p형 클래드층을 성장하는 제 3 공정과,상기 p형 클래드층 상에 제 4 질화물반도체층으로 이루어지는 p형 콘택트층을 성장하는 제 4 공정을 구비하고,상기 제 2 공정, 제 3 공정 및 제 4 공정 중의 적어도 하나는 제 1의 III족 소스 및 질소를 포함하는 V족 소스를 공급함으로써, 제 1의 III족 질화물로 이루어지는 하나의 층을 성장하는 공정과,상기 하나의 층 상에 제 2의 III족 소스 및 질소를 포함하는 V족 소스를 공급함으로써, 상기 하나의 층 상에 제 2의 III족 질화물로 이루어지는 그 밖의 층을 성장하는 공정을 갖고,상기 하나의 층을 성장하는 공정 및 그 밖의 층을 성장하는 공정의 적어도 하나는 상기 기판 상에 p형 도펀트를 공급하는 공정을 포함하며,상기 하나의 층과 상기 그 밖의 층의 계면의 근방영역은 상기 p형 도펀트의 농도가 국소적으로 증대하도록 성장하는 것을 특징으로 하는 질화물반도체소자의 제조방법.
- 제 12항에 있어서,상기 제 1의 III족 소스는 갈륨을 포함하고, 상기 제 2의 III족 소스는 알루미늄 또는 인듐을 포함하는 것을 특징으로 하는 질화물반도체소자의 제조방법.
- 제 12항 또는 제 13항에 있어서,상기 하나의 층 또는 그 밖의 층을 성장하는 공정보다도 전에, 상기 p형 도펀트를 공급하기 시작하는 것을 특징으로 하는 질화물반도체소자의 제조방법.
- 제 12항 또는 제 13항에 있어서,상기 p형 캡층 또는 p형 클래드층의 p형 도펀트의 농도는 약 3 ×1019㎝-3이하인 것을 특징으로 하는 질화물반도체소자의 제조방법.
- 제 12항 또는 제 13항에 있어서,상기 그 밖의 층의 두께는 약 1.5㎚ 이상인 것을 특징으로 하는 질화물반도체소자의 제조방법.
- 제 12항 또는 제 13항에 있어서,상기 p형 콘택트층은 인듐을 포함하고,상기 p형 콘택트층에서의 상기 p형 도펀트의 농도는 상기 p형 콘택트층의 표면으로부터 점차 감소하고 또한 상면으로부터의 깊이가 약 10㎚의 위치에서 약 3×1019㎝-3이상인 것을 특징으로 하는 질화물반도체소자의 제조방법.
- 기판 상에 형성된 제 1 질화물반도체로 이루어지는 활성층과,상기 활성층 상에 형성된 제 2 질화물반도체로 이루어지는 p형 캡층과,상기 p형 캡층 상에 형성된 제 3 질화물반도체층으로 이루어지는 p형 클래드층과,상기 p형 클래드층 상에 형성된 제 4 질화물반도체층으로 이루어지는 p형 콘택트층을 구비하고,상기 p형 캡층, p형 클래드층 및 p형 콘택트층 중의 적어도 하나는 제 1의 III족 질화물로 이루어지는 하나의 층과 그 하나의 층 상에 형성되고 또한 상기 제 1의 III족 질화물과 다른 제 2의 III족 질화물로 이루어지는 그 밖의 층이 적층되어 이루어지고,상기 그 밖의 층에서의 상기 하나의 층과의 계면의 근방영역은 p형 도펀트의 농도가 국소적으로 증대하고 있는 것을 특징으로 하는 질화물반도체소자.
- 제 18항에 있어서,상기 제 1의 III족 질화물은 갈륨을 포함하고, 상기 제 2의 III족 질화물은 알루미늄 또는 인듐을 포함하는 것을 특징으로 하는 질화물반도체소자.
- 제 18항 또는 제 19항에 있어서,상기 p형 캡층 또는 p형 클래드층의 p형 도펀트의 농도는 약 3 ×1019㎝-3이하인 것을 특징으로 하는 질화물반도체소자.
- 제 18항 또는 제 19항에 있어서,상기 그 밖의 층의 두께는 약 1.5㎚ 이상인 것을 특징으로 하는 질화물반도체소자.
- 제 18항 또는 제 19항에 있어서,상기 p형 콘택트층에서의 상기 그 밖의 층은 인듐을 포함하고,상기 p형 콘택트층에서의 상기 p형 도펀트의 농도는 상기 p형 콘택트층의 표면으로부터 점차 감소하고 또한 상면으로부터의 깊이가 약 10㎚의 위치에서 약 3 ×1019㎝-3이상인 것을 특징으로 하는 질화물반도체소자.
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JP3679914B2 (ja) * | 1997-02-12 | 2005-08-03 | 株式会社東芝 | 半導体発光装置及びその製造方法 |
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KR100753147B1 (ko) * | 1998-03-12 | 2007-08-30 | 니치아 카가쿠 고교 가부시키가이샤 | 질화물 반도체 소자 |
JP3394488B2 (ja) | 2000-01-24 | 2003-04-07 | 星和電機株式会社 | 窒化ガリウム系半導体発光素子及びその製造方法 |
JP3453558B2 (ja) | 2000-12-25 | 2003-10-06 | 松下電器産業株式会社 | 窒化物半導体素子 |
-
2000
- 2000-12-25 JP JP2000392003A patent/JP3453558B2/ja not_active Expired - Lifetime
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2001
- 2001-12-19 US US10/021,006 patent/US6586774B2/en not_active Expired - Lifetime
- 2001-12-24 KR KR1020010083800A patent/KR100814587B1/ko not_active Expired - Fee Related
- 2001-12-27 EP EP01130923A patent/EP1220304A3/en not_active Withdrawn
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2003
- 2003-05-09 US US10/434,063 patent/US6921678B2/en not_active Expired - Lifetime
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2005
- 2005-02-24 US US11/063,533 patent/US7160748B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2002198314A (ja) | 2002-07-12 |
EP1220304A2 (en) | 2002-07-03 |
JP3453558B2 (ja) | 2003-10-06 |
US7160748B2 (en) | 2007-01-09 |
US20050142682A1 (en) | 2005-06-30 |
US6586774B2 (en) | 2003-07-01 |
US6921678B2 (en) | 2005-07-26 |
US20020081763A1 (en) | 2002-06-27 |
KR100814587B1 (ko) | 2008-03-17 |
EP1220304A3 (en) | 2008-10-08 |
US20030203629A1 (en) | 2003-10-30 |
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