KR20130081956A - 질화물 반도체층 성장 방법 - Google Patents
질화물 반도체층 성장 방법 Download PDFInfo
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Abstract
Description
도 5는 실리콘 기판 상에 HVPE에 의해 성장된 GaN 버퍼층을 보여준다.
도 6은 약 1050℃에서 HCl 분압(partial pressure)에 따른 HVPE 반응기에서의 실리콘의 에칭율(Etch rate)을 보여준다.
도 7은 약 1050℃에서 HCl 분압이 10%일 때의 에칭 시간(etching time)에 따른 실리콘 두께(Thickness) 변화를 보여준다.
도 8은 약 80μm 두께의 실리콘 기판 상에 300μm 두께의 GaN 성장 후 HVPE 반응기 내에서 실리콘 기판의 HCl 에칭에 의한 기판(1) 두께 변화와, GaN 후막의 보잉(bowing) 변화를 나타내는 그래프이다.
Claims (20)
- 반응기내에 기판을 준비하는 단계와;
상기 반응기내에 준비된 기판 상에 일차적으로 질화물 반도체를 적층하는 단계와;
상기 반응기 내에서 상기 기판을 식각하는 단계;를 포함하는 질화물 반도체층 성장 방법. - 제1항에 있어서, 상기 일차적으로 적층된 질화물 반도체 상에 추가적으로 질화물 반도체를 더 적층하는 단계;를 포함하는 질화물 반도체층 성장 방법.
- 제2항에 있어서, 상기 추가적인 질화물 반도체 적층은 10μm 이상 진행되는 질화물 반도체층 성장 방법.
- 제2항에 있어서, 상기 기판 상에 버퍼층을 형성하는 단계;를 더 포함하며,
상기 버퍼층 위에 질화물 반도체를 적층하는 질화물 반도체층 성장 방법. - 제1항에 있어서, 상기 기판 상에 버퍼층을 형성하는 단계;를 더 포함하며,
상기 버퍼층 위에 질화물 반도체를 적층하는 질화물 반도체층 성장 방법. - 제4항 또는 제5항에 있어서, 상기 버퍼층은, MOCVD법, 스퍼터링법, HVPE법 중 어느 하나를 이용하여 형성되는 질화물 반도체층 성장 방법.
- 제4항 또는 제5항에 있어서, 상기 버퍼층은, AlN, TaN, TiN, HfN, GaN, AlGaN 중 어느 하나로 형성되는 질화물 반도체층 성장 방법.
- 제4항 또는 제5항에 있어서, 상기 버퍼층은, 10nm 내지 3μm 두께로 형성되는 질화물 반도체층 성장 방법.
- 제4항 또는 제5항에 있어서, 상기 버퍼층은 3-fold symmetry 결정 구조로 형성되는 질화물 반도체층 성장 방법.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 상기 기판의 에칭은 일차적으로 질화물 반도체를 1μm 내지 500μm 성장한 후 진행하는 질화물 반도체층 성장 방법.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 상기 기판은 상기 반응기 내에서 HCl 가스를 이용하여 에칭되는 질화물 반도체층 성장 방법.
- 제11항에 있어서, 상기 HCl 가스의 부분 분압은 1 내지 100%인 질화물 반도체층 성장 방법.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 상기 기판의 에칭 공정은 대략 800℃ 내지 1100℃ 범위에서 이루어지는 질화물 반도체층 성장 방법.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 상기 기판은 질화물 반도체의 N-페이스 표면이 나올 때까지 에칭되는 질화물 반도체층 성장 방법.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 상기 기판의 에칭 공정은 질화물 반도체 성장을 멈추거나 성장시키면서 진행되는 질화물 반도체층 성장 방법.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 상기 반응기는 HVPE 반응기이고,
상기 질화물 반도체는 HVPE법을 이용하여 적층되는 질화물 반도체층 성장 방법. - 제16항에 있어서, 상기 일차적인 질화물 반도체 적층은, 대략 950℃ 내지 1100℃의 온도에서 이루어지는 질화물 반도체층 성장 방법.
- 제1항 내지 제5항 중 어느 한 항에 있어서, 성장된 질화물 반도체층은 프리스탠딩 질화물 반도체 기판으로 사용되는 질화물 반도체층 성장 방법.
- 제18항에 있어서, 상기 질화물 반도체는 GaN인 질화물 반도체층 성장 방법.
- 제18항에 있어서, 상기 질화물 반도체 기판은 1μm 내지 3mm의 두께, 10mm 내지 18인치의 직경을 가지는 질화물 반도체층 성장 방법.
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KR1020120003085A KR20130081956A (ko) | 2012-01-10 | 2012-01-10 | 질화물 반도체층 성장 방법 |
US13/733,632 US9741560B2 (en) | 2012-01-10 | 2013-01-03 | Method of growing nitride semiconductor layer |
EP13150658.6A EP2615628B1 (en) | 2012-01-10 | 2013-01-09 | Method of growing nitride semiconductor layer |
CN2013100090427A CN103199168A (zh) | 2012-01-10 | 2013-01-10 | 生长氮化物半导体层的方法 |
JP2013002389A JP2013142057A (ja) | 2012-01-10 | 2013-01-10 | 窒化物半導体層の成長方法 |
JP2017239671A JP2018087128A (ja) | 2012-01-10 | 2017-12-14 | 窒化物半導体層の成長方法 |
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KR1020120003085A KR20130081956A (ko) | 2012-01-10 | 2012-01-10 | 질화물 반도체층 성장 방법 |
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US (1) | US9741560B2 (ko) |
EP (1) | EP2615628B1 (ko) |
JP (2) | JP2013142057A (ko) |
KR (1) | KR20130081956A (ko) |
CN (1) | CN103199168A (ko) |
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US9190270B2 (en) | 2013-06-04 | 2015-11-17 | Samsung Electronics Co., Ltd. | Low-defect semiconductor device and method of manufacturing the same |
US9337381B2 (en) | 2013-10-21 | 2016-05-10 | Samsung Electronics Co., Ltd. | Semiconductor buffer structure, semiconductor device including the semiconductor buffer structure, and method of manufacturing the semiconductor device using the semiconductor buffer structure |
KR20170141308A (ko) * | 2016-06-14 | 2017-12-26 | 삼성전자주식회사 | 질화물 반도체 기판 제조방법 |
KR20180044032A (ko) * | 2016-10-21 | 2018-05-02 | 삼성전자주식회사 | 갈륨 질화물 기판의 제조 방법 |
US10229831B2 (en) | 2016-12-16 | 2019-03-12 | Samsung Electronics Co., Ltd. | Method of forming nitride semiconductor substrate and method of fabricating semiconductor device |
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KR102311677B1 (ko) | 2014-08-13 | 2021-10-12 | 삼성전자주식회사 | 반도체소자 및 그 제조방법 |
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KR102165760B1 (ko) | 2018-02-12 | 2020-10-14 | 전주대학교 산학협력단 | Hvpe반응기 |
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Also Published As
Publication number | Publication date |
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EP2615628A1 (en) | 2013-07-17 |
CN103199168A (zh) | 2013-07-10 |
US9741560B2 (en) | 2017-08-22 |
US20130175541A1 (en) | 2013-07-11 |
EP2615628B1 (en) | 2020-04-08 |
JP2018087128A (ja) | 2018-06-07 |
JP2013142057A (ja) | 2013-07-22 |
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