KR101350092B1 - 화합물 반도체 장치 및 그 제조 방법 - Google Patents
화합물 반도체 장치 및 그 제조 방법 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 99
- 150000001875 compounds Chemical class 0.000 title claims abstract description 80
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 22
- 239000000758 substrate Substances 0.000 claims abstract description 60
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 174
- 229910002704 AlGaN Inorganic materials 0.000 description 25
- 239000011241 protective layer Substances 0.000 description 22
- 238000002161 passivation Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 10
- 239000000203 mixture Substances 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 5
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052594 sapphire Inorganic materials 0.000 description 4
- 239000010980 sapphire Substances 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000002109 crystal growth method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000001451 molecular beam epitaxy Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- XCZXGTMEAKBVPV-UHFFFAOYSA-N trimethylgallium Chemical compound C[Ga](C)C XCZXGTMEAKBVPV-UHFFFAOYSA-N 0.000 description 2
- -1 AlN compound Chemical class 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
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000005533 two-dimensional electron gas Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000000927 vapour-phase epitaxy Methods 0.000 description 1
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Abstract
기판(1)과, 기판(1) 상방에 형성된 GaN계 화합물 반도체 적층 구조(3)와, 기판(1)과 GaN계 화합물 반도체 적층 구조(3)와의 사이에 형성된 AlN계의 응력 완화층(2)이 형성되어 있다. 응력 완화층(2)의 GaN계 화합물 반도체 적층 구조(3)와 접하는 면에, 깊이가 5㎚ 이상의 오목부(2a)가 2×1010㎝-2 이상의 개수 밀도로 형성되어 있다.
Description
도 2는 제1 실시 형태에 관한 화합물 반도체 장치의 작용을 나타내는 도면이다.
도 3은 표면 성상과 스큐니스 Rsk의 관계를 나타내는 도면이다.
도 4는 제2 실시 형태에 관한 GaN계 HEMT의 구조를 나타내는 도면이다.
도 5는 제2 실시 형태에 관한 GaN계 HEMT의 제조 방법을 공정순으로 나타내는 단면도이다.
도 6은 제2 실시 형태의 변형예를 나타내는 단면도이다.
도 7은 고출력 증폭기의 외관의 예를 나타내는 도면이다.
도 8은 전원 장치를 도시하는 도면이다.
도 9는 응력 완화층의 표면 성상의 분석 결과를 나타내는 도면이다.
도 10은 오목부의 깊이와, 휘어짐의 크기 및 크랙의 길이의 관계를 나타내는 도면이다.
2 : 응력 완화층
2a : 오목부
3 : 화합물 반도체 적층 구조
11 : 기판
12 : 응력 완화층
13 : 버퍼층
14 : 전자 주행층
15 : 전자 공급층
16 : 보호층
17g : 게이트 전극
17s : 소스 전극
17d : 드레인 전극
Claims (10)
- 기판과,
상기 기판 상방에 형성된 GaN계 화합물 반도체 적층 구조와,
상기 기판과 상기 GaN계 화합물 반도체 적층 구조와의 사이에 형성된 AlN계의 응력 완화층을 갖고,
상기 응력 완화층의 상기 GaN계 화합물 반도체 적층 구조와 접하는 면에, 깊이가 5㎚ 이상인 오목부가 2×1010㎝-2 이상의 개수 밀도로 형성되어 있고,
상기 응력 완화층의 상기 GaN계 화합물 반도체 적층 구조와 접하는 면에 있어서의 거칠기 곡선의 스큐니스가 마이너스인 것을 특징으로 하는 화합물 반도체 장치. - 제1항에 있어서,
상기 응력 완화층의 상기 GaN계 화합물 반도체 적층 구조와 접하는 면에, 깊이가 7㎚ 이상인 오목부가 8×109㎝-2 이상의 개수 밀도로 형성되어 있는 것을 특징으로 하는 화합물 반도체 장치. - 기판과,
상기 기판 상방에 형성된 GaN계 화합물 반도체 적층 구조와,
상기 기판과 상기 GaN계 화합물 반도체 적층 구조와의 사이에 형성된 AlN계의 응력 완화층을 갖고,
상기 응력 완화층의 상기 GaN계 화합물 반도체 적층 구조와 접하는 면에, 깊이가 15㎚ 이상인 오목부가 9×109㎝-2 이상의 개수 밀도로 형성되어 있고,
상기 응력 완화층의 상기 GaN계 화합물 반도체 적층 구조와 접하는 면에 있어서의 거칠기 곡선의 스큐니스가 마이너스인 것을 특징으로 하는 화합물 반도체 장치. - 제1항에 있어서,
상기 오목부의 직경이 80㎚ 이상인 것을 특징으로 하는 화합물 반도체 장치. - 삭제
- 기판 상방에 AlN계의 응력 완화층을 형성하는 공정과,
상기 응력 완화층 상에 GaN계 화합물 반도체 적층 구조를 형성하는 공정을 갖고,
상기 응력 완화층을 형성할 때에, 상기 응력 완화층의 상기 GaN계 화합물 반도체 적층 구조와 접하는 면에, 깊이가 5㎚ 이상인 오목부를 2×1010㎝-2 이상의 개수 밀도로 형성하고,
상기 응력 완화층을 형성할 때에 이용하는 원료 가스의 V/III비를 200 이상으로 하는 것을 특징으로 하는 화합물 반도체 장치의 제조 방법. - 제6항에 있어서,
기판 상방에 AlN계의 응력 완화층을 형성하는 공정과,
상기 응력 완화층 상에 GaN계 화합물 반도체 적층 구조를 형성하는 공정을 갖고,
상기 응력 완화층을 형성할 때에, 상기 응력 완화층의 상기 GaN계 화합물 반도체 적층 구조와 접하는 면에, 깊이가 7㎚ 이상인 오목부를 8×109㎝-2 이상의 개수 밀도로 형성하는 것을 특징으로 하는 화합물 반도체 장치의 제조 방법. - 제6항에 있어서,
상기 응력 완화층을 형성할 때에, 상기 응력 완화층의 상기 GaN계 화합물 반도체 적층 구조와 접하는 면에, 깊이가 15㎚ 이상인 오목부를 9×109㎝-2 이상의 개수 밀도로 형성하는 것을 특징으로 하는 화합물 반도체 장치의 제조 방법. - 삭제
- 제6항에 있어서,
상기 응력 완화층을 형성할 때의 성장 온도를 1000℃ 내지 1040℃로 하는 것을 특징으로 하는 화합물 반도체 장치의 제조 방법.
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JP2011178957A JP5891650B2 (ja) | 2011-08-18 | 2011-08-18 | 化合物半導体装置及びその製造方法 |
JPJP-P-2011-178957 | 2011-08-18 |
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JP (1) | JP5891650B2 (ko) |
KR (1) | KR101350092B1 (ko) |
CN (2) | CN102956679B (ko) |
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US8981380B2 (en) * | 2010-03-01 | 2015-03-17 | International Rectifier Corporation | Monolithic integration of silicon and group III-V devices |
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