KR101027107B1 - 완전 변환된 반도체 금속 합금에 의한 금속 게이트mosfet - Google Patents
완전 변환된 반도체 금속 합금에 의한 금속 게이트mosfet Download PDFInfo
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- KR101027107B1 KR101027107B1 KR1020087004254A KR20087004254A KR101027107B1 KR 101027107 B1 KR101027107 B1 KR 101027107B1 KR 1020087004254 A KR1020087004254 A KR 1020087004254A KR 20087004254 A KR20087004254 A KR 20087004254A KR 101027107 B1 KR101027107 B1 KR 101027107B1
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- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/601—Insulated-gate field-effect transistors [IGFET] having lightly-doped drain or source extensions, e.g. LDD IGFETs or DDD IGFETs
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- H10D64/017—Manufacture or treatment using dummy gates in processes wherein at least parts of the final gates are self-aligned to the dummy gates, i.e. replacement gate processes
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- H10D84/01—Manufacture or treatment
- H10D84/0123—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs
- H10D84/0126—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs
- H10D84/0165—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs the components including complementary IGFETs, e.g. CMOS devices
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- H—ELECTRICITY
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- H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
- H10D84/01—Manufacture or treatment
- H10D84/0123—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs
- H10D84/0126—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs
- H10D84/0165—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs the components including complementary IGFETs, e.g. CMOS devices
- H10D84/0172—Manufacturing their gate conductors
- H10D84/0174—Manufacturing their gate conductors the gate conductors being silicided
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- H10D84/01—Manufacture or treatment
- H10D84/0123—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs
- H10D84/0126—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs
- H10D84/0165—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs the components including complementary IGFETs, e.g. CMOS devices
- H10D84/0172—Manufacturing their gate conductors
- H10D84/0177—Manufacturing their gate conductors the gate conductors having different materials or different implants
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- H10D84/01—Manufacture or treatment
- H10D84/02—Manufacture or treatment characterised by using material-based technologies
- H10D84/03—Manufacture or treatment characterised by using material-based technologies using Group IV technology, e.g. silicon technology or silicon-carbide [SiC] technology
- H10D84/038—Manufacture or treatment characterised by using material-based technologies using Group IV technology, e.g. silicon technology or silicon-carbide [SiC] technology using silicon technology, e.g. SiGe
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- H—ELECTRICITY
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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- H10D30/00—Field-effect transistors [FET]
- H10D30/01—Manufacture or treatment
- H10D30/021—Manufacture or treatment of FETs having insulated gates [IGFET]
- H10D30/0223—Manufacture or treatment of FETs having insulated gates [IGFET] having source and drain regions or source and drain extensions self-aligned to sides of the gate
- H10D30/0227—Manufacture or treatment of FETs having insulated gates [IGFET] having source and drain regions or source and drain extensions self-aligned to sides of the gate having both lightly-doped source and drain extensions and source and drain regions self-aligned to the sides of the gate, e.g. lightly-doped drain [LDD] MOSFET or double-diffused drain [DDD] MOSFET
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- Electrodes Of Semiconductors (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Thin Film Transistor (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Abstract
Description
Claims (10)
- 반도체 구조물을 형성하는 방법에 있어서,제1 타입 MOSFET 영역에 게이트 스택을 및 제2 타입 MOSFET 영역에 게이트 스택을 포함하는 구조물을 마련하는 단계 ― 상기 게이트 스택 각각은 반도체층을 포함하고, 상기 구조물은 상기 제1 타입 MOSFET 영역 및 상기 제2 타입 MOSFET 영역의 상기 게이트 스택 위에 형성되는 평탄화 유전층(planarized dielectric layer)을 더 포함함 ― ;상기 평탄화 유전층부를 제거하여 상기 게이트 스택의 상기 반도체층을 노출시키는 단계;상기 게이트 스택의 상기 노출된 반도체층과 접촉하여 금속 함유층을 형성하는 단계 ― 상기 금속 함유층은 상기 제1 타입 MOSFET 영역에서는 상기 게이트 스택의 반도체층을 반도체 금속 합금으로 완전히 변환시킬 정도로 두껍고, 상기 제2 타입 MOSFET 영역에서는 상기 반도체층을 반도체 금속 합금으로 완전히 변환시키지 않을 정도로 두꺼움 ― ; 및상기 제1 타입 MOSFET 영역의 상기 게이트 스택의 상기 반도체층과 접촉하는 금속 함유층으로부터 완전 변환된 반도체 금속 합금 게이트 컨덕터를 형성하며, 이와 동시에 상기 제2 타입 MOSFET 영역의 상기 게이트 스택의 상기 반도체층과 접촉하는 금속 함유층으로부터 부분적으로 변환된 반도체 금속 합금 게이트 컨덕터를 형성하는 단계;를 포함하는 반도체 구조물 형성 방법.
- 제 1 항에 있어서,상기 게이트 스택의 상기 반도체층은 실리콘을 포함하고,상기 금속 함유층은 실리콘과 접촉하면 반도체 금속 실리사이드를 형성할 수 있는 금속을 포함하고 고도로 도핑된 폴리실리콘의 일 함수(work-function)와 실질적으로 유사한 일 함수를 갖는, 반도체 구조물 형성 방법.
- 제 1 항에 있어서,상기 금속 함유층을 형성하기 이전에, 상기 제1 타입 MOSFET 영역의 상기 게이트 스택의 상기 반도체층을 상기 제2 타입 MOSFET 영역의 상기 게이트 스택의 상기 반도체층의 높이보다 낮은 높이까지 리세스하는 단계를 더 포함하는, 반도체 구조물 형성 방법.
- 제 3 항에 있어서,상기 제1 타입 MOSFET 영역의 상기 게이트 스택의 상기 반도체층을 리세스하는 단계는 상기 평탄화 유전층에 대하여 선택적인 상기 제1 타입 MOSFET 영역의 상기 게이트 스택의 상기 반도체층의 이방성 에칭을 포함하는, 반도체 구조물 형성 방법.
- 제 3 항에 있어서,상기 금속 함유층은 니켈을 포함하고,상기 완전히 그리고 부분적으로 변환된 반도체 금속 합금 게이트 컨덕터를 형성하는 단계는 300℃ 내지 600℃의 온도에서 RTA(rapid thermal anneal)를 행하는 단계를 포함하는, 반도체 구조물 형성 방법.
- 제 1 항에 있어서,상기 금속 함유층을 형성하는 단계는 상기 제2 타입 MOSFET 영역 위의 상기 금속 함유층을 상기 제1 타입 MOSFET 영역 위의 상기 금속 함유층의 두께에 대해서 박화(thinning)하는 단계를 더 포함하는, 반도체 구조물 형성 방법.
- 제 6 항에 있어서,상기 상기 제2 타입 MOSFET 영역 위의 상기 금속 함유층을 상기 박화하는 단계는 상기 제1 타입 MOSFET 영역 위의 마스킹 층을 형성하는 단계 및 상기 제2 타입 MOSFET 영역 위의 습식 에칭을 이용하여 상기 금속 함유층을 박화하는 단계를 더 포함하는, 반도체 구조물 형성 방법.
- 제 1 항에 있어서,상기 금속 함유층은 니켈을 포함하고,상기 완전히 그리고 부분적으로 변환된 반도체 금속 합금 게이트 컨덕터를 형성하는 단계는 300℃ 내지 600℃의 온도에서 RTA(rapid thermal anneal)를 행하는 단계를 포함하는, 반도체 구조물 형성 방법.
- 제 1 항에 있어서,상기 게이트 스택의 상기 반도체층은 Si, Ge, SiGe, SiC, SiGeC 및 GaAs로 이루어진 군에서 선택된 반도체를 포함하는, 반도체 구조물 형성 방법.
- 제 1 항에 있어서,상기 제1 타입 MOSFET 영역은 nFET 영역이고, 상기 제2 타입 MOSFET 영역은 pFET 영역인, 반도체 구조물 형성 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/161,372 US7151023B1 (en) | 2005-08-01 | 2005-08-01 | Metal gate MOSFET by full semiconductor metal alloy conversion |
US11/161,372 | 2005-08-01 |
Publications (2)
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KR20080032220A KR20080032220A (ko) | 2008-04-14 |
KR101027107B1 true KR101027107B1 (ko) | 2011-04-05 |
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KR1020087004254A Expired - Fee Related KR101027107B1 (ko) | 2005-08-01 | 2006-08-01 | 완전 변환된 반도체 금속 합금에 의한 금속 게이트mosfet |
Country Status (7)
Country | Link |
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US (2) | US7151023B1 (ko) |
EP (1) | EP1911088A4 (ko) |
JP (1) | JP2009503902A (ko) |
KR (1) | KR101027107B1 (ko) |
CN (1) | CN101233611A (ko) |
TW (1) | TW200725750A (ko) |
WO (1) | WO2007016514A2 (ko) |
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- 2006-08-01 JP JP2008525091A patent/JP2009503902A/ja active Pending
- 2006-08-01 CN CNA2006800274429A patent/CN101233611A/zh active Pending
- 2006-08-01 EP EP06789024A patent/EP1911088A4/en not_active Withdrawn
- 2006-08-01 KR KR1020087004254A patent/KR101027107B1/ko not_active Expired - Fee Related
- 2006-08-01 WO PCT/US2006/029800 patent/WO2007016514A2/en active Application Filing
- 2006-10-02 US US11/537,718 patent/US20070034967A1/en not_active Abandoned
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Also Published As
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EP1911088A4 (en) | 2008-11-12 |
TW200725750A (en) | 2007-07-01 |
WO2007016514A2 (en) | 2007-02-08 |
KR20080032220A (ko) | 2008-04-14 |
CN101233611A (zh) | 2008-07-30 |
JP2009503902A (ja) | 2009-01-29 |
EP1911088A2 (en) | 2008-04-16 |
US7151023B1 (en) | 2006-12-19 |
WO2007016514A3 (en) | 2007-04-05 |
US20070034967A1 (en) | 2007-02-15 |
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