KR20070088614A - 금속 게이트 전극을 포함하는 반도체 디바이스의 제조 방법 - Google Patents
금속 게이트 전극을 포함하는 반도체 디바이스의 제조 방법 Download PDFInfo
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- KR20070088614A KR20070088614A KR1020077008086A KR20077008086A KR20070088614A KR 20070088614 A KR20070088614 A KR 20070088614A KR 1020077008086 A KR1020077008086 A KR 1020077008086A KR 20077008086 A KR20077008086 A KR 20077008086A KR 20070088614 A KR20070088614 A KR 20070088614A
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- semiconductor device
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- 229910052710 silicon Inorganic materials 0.000 claims description 21
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
Description
Claims (20)
- 반도체 디바이스의 제조 방법에 있어서,기판 상에 유전층을 형성하는 단계와,상기 유전층 상에 제 1 층 및 제 2 층을 포함하는 희생 구조체(sacrificial structure) - 상기 제 2 층은 상기 제 1 층 상에 형성되며 상기 제 2 층은 상기 제 1 층보다 넒음 - 를 형성하는 단계와,상기 희생 구조체를 제거하여 트렌치를 생성하는 단계와,상기 트렌치 내에 금속 게이트 전극을 형성하는 단계를 포함하는반도체 디바이스의 제조 방법.
- 제 1 항에 있어서,상기 희생 구조체를 제거한 후 유전층을 제거하는 단계와,상기 기판 상에 높은-k 게이트 유전층을 형성하는 단계와,상기 높은-k 게이트 유전층 상의 트렌치 내에 상기 금속 게이트 전극을 형성하는 단계를 더 포함하는반도체 디바이스의 제조 방법.
- 제 1 항에 있어서,상기 제 1 층은 게르마늄을 포함하고 상기 제 2 층은 실리콘을 포함하는반도체 디바이스의 제조 방법.
- 제 3 항에 있어서,상기 희생 구조체는 게르마늄 함유 층 상에 실리콘 함유 층을 형성한 후, 상기 실리콘 함유 층 및 상기 게르마늄 함유 층을 과산화수소를 포함하는 수용액에 노출시킴으로써 형성되는반도체 디바이스의 제조 방법.
- 제 1 항에 있어서,상기 제 1 층은 실리콘을 포함하고 상기 제 2 층은 게르마늄을 포함하는반도체 디바이스의 제조 방법.
- 제 5 항에 있어서,상기 희생 구조체는 실리콘 함유 층 상에 게르마늄 함유 층을 형성한 후, 상 기 게르마늄 함유 층 및 상기 실리콘 함유 층을 수산화물을 포함하는 수용액에 노출시킴으로써 형성되는반도체 디바이스의 제조 방법.
- 제 6 항에 있어서,상기 수산화물 소스는 수산화암모늄 또는 테트라메틸 수산화암모늄을 포함하는반도체 디바이스의 제조 방법.
- 제 1 항에 있어서,상기 유전층은 높은-k 게이트 유전층인반도체 디바이스의 제조 방법.
- 반도체 디바이스의 제조 방법에 있어서,기판 상에 제 1 유전층을 형성하는 단계와,상기 제 1 유전층 상에 제 1 층을 형성하는 단계와,상기 제 1 층 상에 제 2 층을 형성하는 단계와,상기 제 1 층을 상기 제 2 층보다 실질적으로 더 제거하는 수용액에 상기 제 1 층 및 상기 제 2 층을 노출시키는 단계와,상기 기판 상에 제 2 유전층을 형성하는 단계와,상기 제 1 유전층, 상기 제 1 층 및 상기 제 2 층을 제거하여 상기 제 2 유전층 내에 트렌치를 생성하는 단계와,상기 기판 상의 상기 트렌치 내에 높은-k 게이트 유전층을 형성하는 단계와,상기 트렌치 내부의 상기 높은-k 게이트 유전층 상에 금속 게이트 전극을 형성하는 단계를 포함하는반도체 디바이스의 제조 방법.
- 제 9 항에 있어서,상기 제 1 층은 게르마늄을 포함하고 약 100Å 내지 약 500Å의 두께를 가지며, 상기 제 2 층은 실리콘을 포함하고 약 400Å 내지 약 800Å의 두께를 갖는반도체 디바이스의 제조 방법.
- 제 10 항에 있어서,상기 제 1 층 및 상기 제 2 층은, 부피의 단위로 약 2% 내지 약 5%의 과산화수소를 포함하는 수용액에 노출되는반도체 디바이스의 제조 방법.
- 제 9 항에 있어서,상기 제 1 층은 실리콘을 포함하고 약 100Å 내지 약 500Å의 두께를 가지며, 상기 제 2 층은 게르마늄을 포함하고 약 400Å 내지 약 800Å의 두께를 갖는반도체 디바이스의 제조 방법.
- 제 12 항에 있어서,상기 제 1 층 및 상기 제 2 층은, 부피의 단위로 약 2% 내지 약 15%의 수산화암모늄 또는 테트라메틸 수산화암모늄을 포함하는 수용액에 노출되는반도체 디바이스의 제조 방법.
- 반도체 디바이스의 제조 방법에 있어서,기판 상에 제 1 유전층을 형성하는 단계와,상기 제 1 유전층 상에 제 1 희생층을 형성하는 단계와,상기 제 1 희생층 상에 제 2 희생층을 형성하는 단계와,상기 제 1 희생층이 상기 제 2 희생층의 폭보다 적어도 약 100Å 더 작은 폭 을 가질 때까지 상기 제 1 희생층의 부분을 제거하는 단계와,상기 기판 상에 제 2 유전층을 형성하는 단계와,상기 제 1 유전층, 상기 제 1 희생층 및 상기 제 2 희생층을 제거하여 상기 제 2 유전층 내에 둘러싸인 트렌치를 생성하는 단계와,상기 기판 상의 상기 트렌치 내에 높은-k 게이트 유전층을 형성하는 단계와,상기 트렌치의 내부의 상기 높은-k 게이트 유전층 상에 금속 게이트 전극을 형성하는 단계를 포함하는반도체 디바이스의 제조 방법.
- 제 14 항에 있어서,상기 제 1 희생층은 게르마늄을 포함하고 약 100Å 내지 약 500Å의 두께를 가지며,상기 제 2 희생층은 실리콘을 포함하고 약 400Å 내지 약 800Å의 두께를 가지며,상기 제 1 희생층의 부분이 제거된 후 상기 제 1 희생층은 약 300Å 미만의 폭을 갖는반도체 디바이스의 제조 방법.
- 제 15 항에 있어서,상기 제 1 희생층의 부분은, 부피의 단위로 약 2% 내지 약 5%의 과산화수소를 포함하는 수용액에 상기 제 1 희생층을 노출시킴으로써 제거되는반도체 디바이스의 제조 방법.
- 제 14 항에 있어서,상기 제 1 희생층은 실리콘을 포함하고 약 100Å 내지 약 500Å의 두께를 가지며,상기 제 2 희생층은 게르마늄을 포함하고 약 400Å 내지 약 800Å의 두께를 가지며,상기 제 1 희생층의 부분이 제거된 후 상기 제 1 희생층은 약 300Å 미만의 폭을 갖는반도체 디바이스의 제조 방법.
- 제 17 항에 있어서,상기 제 1 희생층의 부분은, 부피의 단위로 약 2% 내지 약 15%의 수산화암모늄 또는 테트라메틸 수산화암모늄을 포함하는 수용액에 상기 제 1 희생층을 노출시 킴으로써 제거되는반도체 디바이스의 제조 방법.
- 제 14 항에 있어서,상기 높은-k 게이트 유전층은 약 40Å 미만의 두께를 갖고, 하프늄 산화물, 하프늄 실리콘 산화물, 란탄 산화물, 란탄 알루미늄 산화물, 지르코늄 산화물, 지르코늄 실리콘 산화물, 티타늄 산화물, 탄탈 산화물, 바륨 스트론튬 티타늄 산화물, 바륨 티타늄 산화물, 스트론튬 티타늄 산화물, 이트륨 산화물, 알루미늄 산화물, 납 스칸듐 탄탈 산화물 및 납 아연 니오브산염으로 구성되는 그룹에서 선택되는 재료를 포함하는반도체 디바이스의 제조 방법.
- 제 14 항에 있어서,상기 금속 게이트 전극은 하프늄, 지르코늄, 티타늄, 탄탈, 알루미늄, 금속 탄화물, 알루미나이드, 루테늄, 팔라듐, 백금, 코발트, 니켈 및 도전성 금속 산화물로 구성되는 그룹에서 선택되는 금속을 포함하는반도체 디바이스의 제조 방법.
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-
2004
- 2004-09-07 US US10/936,114 patent/US7176090B2/en not_active Expired - Fee Related
-
2005
- 2005-09-02 CN CNB2005800297962A patent/CN100565842C/zh not_active Expired - Fee Related
- 2005-09-02 WO PCT/US2005/031499 patent/WO2006029061A1/en active Application Filing
- 2005-09-02 KR KR1020077008086A patent/KR100880038B1/ko not_active IP Right Cessation
- 2005-09-02 TW TW094130151A patent/TWI292181B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
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US20060051957A1 (en) | 2006-03-09 |
US7176090B2 (en) | 2007-02-13 |
CN101010798A (zh) | 2007-08-01 |
CN100565842C (zh) | 2009-12-02 |
TW200616053A (en) | 2006-05-16 |
KR100880038B1 (ko) | 2009-01-22 |
WO2006029061A1 (en) | 2006-03-16 |
TWI292181B (en) | 2008-01-01 |
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