JP5001295B2 - 半導体デバイス用の自己整合ショットキー接合の形成方法 - Google Patents
半導体デバイス用の自己整合ショットキー接合の形成方法 Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66568—Lateral single gate silicon transistors
- H01L29/66636—Lateral single gate silicon transistors with source or drain recessed by etching or first recessed by etching and then refilled
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66568—Lateral single gate silicon transistors
- H01L29/66575—Lateral single gate silicon transistors where the source and drain or source and drain extensions are self-aligned to the sides of the gate
- H01L29/66583—Lateral single gate silicon transistors where the source and drain or source and drain extensions are self-aligned to the sides of the gate with initial gate mask or masking layer complementary to the prospective gate location, e.g. with dummy source and drain contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66568—Lateral single gate silicon transistors
- H01L29/66643—Lateral single gate silicon transistors with source or drain regions formed by a Schottky barrier or a conductor-insulator-semiconductor structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7839—Field effect transistors with field effect produced by an insulated gate with Schottky drain or source contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66545—Unipolar field-effect transistors with an insulated gate, i.e. MISFET using a dummy, i.e. replacement gate in a process wherein at least a part of the final gate is self aligned to the dummy gate
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Electrodes Of Semiconductors (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Light Receiving Elements (AREA)
Description
− 半導体基板上にゲートを設けるステップと、
− 前記活性領域上に、ソース/ドレイン領域である接合領域を規定する犠牲材料の層を選択的に堆積するステップと、
− 前記ゲート及び前記犠牲材料の層の上に誘電体の層を設けるステップと、
− 前記接合領域における前記誘電体を選択的にエッチングして、コンタクトホールを形成するステップと、
− 続いて、前記接合領域から前記誘電体を除去して、キャビティを作成するステップと、
− 前記コンタクトホールを経て前記キャビティを金属材料で満たしてショットキー接合を形成するステップと、
を含むことを特徴とする、自己整合金属−半導体接合の形成方法が提供される。
Claims (17)
- 半導体デバイスの活性領域に対して自己整合金属−半導体接合を形成する方法であって、
− 半導体基板上にゲートを設けるステップと、
− 前記活性領域上に、ソース/ドレイン領域である接合領域を規定する犠牲材料の層を選択的に堆積するステップと、
− 前記ゲート及び前記犠牲材料の層の上に誘電体の層を設けるステップと、
− 前記接合領域における前記誘電体を選択的にエッチングして、コンタクトホールを形成するステップと、
− 続いて、前記接合領域から前記誘電体を除去して、キャビティを作成するステップと、
− 前記コンタクトホールを経て前記キャビティを金属材料で満たしてショットキー接合を形成するステップと、
を含むことを特徴とする、自己整合金属−半導体接合の形成方法。 - 前記半導体基板上にゲートを設けるステップの後であり、かつ、前記活性領域上に、ソース/ドレイン領域である接合領域を規定する犠牲材料の層を選択的に堆積するステップの前に、
前記活性領域に対応する前記半導体基板の表面から基板材料の一部を除去して、前記接合領域を規定する凹所を形成するステップを更に含む、請求項1に記載の方法。 - 前記犠牲材料が半導体材料である、請求項1に記載の方法。
- 前記基板材料の一部を、ウェット及び/又はドライエッチングプロセスによって前記半導体基板の表面から除去する、請求項2に記載の方法。
- 前記半導体基板がシリコンから成り、前記半導体基板上に堆積する前記半導体材料の層がシリコンゲルマニウム(SiGe)であり、該堆積をエピタキシーによって行う、請求項3に記載の方法。
- 前記半導体基板上にゲートを設けるステップの後であり、かつ、前記活性領域上に、ソース/ドレイン領域である接合領域を規定する犠牲材料の層を選択的に堆積するステップの前に、
前記活性領域に対応する前記半導体基板の表面から基板材料の一部を除去して、前記接合領域を規定する凹所を形成するステップを更に含み、
前記SiGeの層を前記凹所内に成長させる、請求項5に記載の方法。 - 前記ゲートがポリシリコンから成り、前記SiGe層を、前記ゲートの頂部にも成長させる、請求項5に記載の方法。
- 前記凹所における前記犠牲材料の層が、前記凹所を形成する前の、前記半導体基板の元の表面よりも高くに延在する、請求項2に記載の方法。
- 前記犠牲材料を、選択的化学エッチングによって前記凹所から除去する、請求項2に記載の方法。
- 前記半導体基板上にゲートを設けるステップの後であり、かつ、前記活性領域上に、ソース/ドレイン領域である接合領域を規定する犠牲材料の層を選択的に堆積するステップの前に、
前記活性領域に対応する前記半導体基板の表面から基板材料の一部を除去して、前記接合領域を規定する凹所を形成するステップを更に含み、
前記SiGe層を、SiGeの選択的化学エッチングによって前記凹所から除去する、請求項5に記載の方法。 - 前記キャビティを、前記コンタクトホールを経て金属材料で満たすステップが、先ず、金属堆積処理を行って、コンタクトホールの側壁と前記誘電体の表面を金属層で覆うサブステップと、その後に前記コンタクトホールの残り部分を金属で完全に満たすサブステップを含む、請求項1に記載の方法。
- 前記誘電体の表面から前記堆積した金属層を除去するステップを更に含む、請求項1に記載の方法。
- 前記接合を形成するのに用いる金属が、前記半導体デバイスを製造するプロセスフローの最大温度で規定される所定の温度下では、前記半導体基板の材料と反応しない、請求項1に記載の方法。
- 前記半導体デバイスは、pMOS及びnMOSデバイスを構成するCMOSトランジスタを備え、前記pMOS及びnMOSデバイスのそれぞれの接合を形成するのに種々の金属を用いる、請求項1に記載の方法。
- 前記半導体デバイスは、pMOS及びnMOSデバイスを構成するCMOSトランジスタを備え、前記pMOS及びnMOSデバイスのそれぞれの金属接合の厚さが異なる、請求項1に記載の方法。
- 前記pMOS及びnMOSデバイスのそれぞれのコンタクトホールを形成するのに、別々のコンタクトエッチングステップを用いる、請求項13に記載の方法。
- 請求項1に記載の方法によって形成される金属半導体接合を内蔵する、少なくとも1つの半導体デバイスを基板上に備えている集積回路。
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EP05300971.8 | 2005-11-28 | ||
EP05300971 | 2005-11-28 | ||
PCT/IB2006/054446 WO2007060641A1 (en) | 2005-11-28 | 2006-11-27 | Method of fabricating self aligned schottky junctions for semiconductors devices |
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JP5001295B2 true JP5001295B2 (ja) | 2012-08-15 |
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US (1) | US7884002B2 (ja) |
EP (1) | EP1958244B1 (ja) |
JP (1) | JP5001295B2 (ja) |
CN (1) | CN101317253B (ja) |
AT (1) | ATE457525T1 (ja) |
DE (1) | DE602006012215D1 (ja) |
WO (1) | WO2007060641A1 (ja) |
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FR2931294B1 (fr) | 2008-05-13 | 2010-09-03 | Commissariat Energie Atomique | Procede de realisation d'un transistor a source et drain metalliques |
US7989824B2 (en) * | 2009-06-03 | 2011-08-02 | Koninklijke Philips Electronics N.V. | Method of forming a dielectric layer on a semiconductor light emitting device |
FR2947384B1 (fr) * | 2009-06-25 | 2012-03-30 | Commissariat Energie Atomique | Procede de realisation d'un transistor a source et drain metalliques |
FR2976122A1 (fr) * | 2011-05-31 | 2012-12-07 | St Microelectronics Crolles 2 | Transistor mosfet, composant incluant plusieurs tels transistors et procede de fabrication |
KR101873911B1 (ko) | 2011-06-07 | 2018-07-04 | 삼성전자주식회사 | 콘택 구조체를 포함하는 반도체 소자와 그 제조방법, 및 그것을 포함하는 전자 시스템 |
EP3417760A1 (en) * | 2012-10-23 | 2018-12-26 | Olympus Corporation | Semiconductor apparatus, and manufacturing method of semiconductor apparatus |
CN103745929A (zh) * | 2013-12-24 | 2014-04-23 | 上海新傲科技股份有限公司 | 肖特基势垒mosfet的制备方法 |
CN106062962A (zh) * | 2014-03-21 | 2016-10-26 | 英特尔公司 | 用于集成富Ge的p‑MOS源极/漏极接触部的技术 |
DE102016119799B4 (de) | 2016-10-18 | 2020-08-06 | Infineon Technologies Ag | Integrierte schaltung, die einen vergrabenen hohlraum enthält, und herstellungsverfahren |
CN112864116B (zh) * | 2019-11-27 | 2024-06-04 | 华邦电子股份有限公司 | 半导体元件及其制造方法 |
CN112018076A (zh) * | 2020-07-28 | 2020-12-01 | 中国科学院微电子研究所 | 一种半导体结构及其制备方法 |
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JPH02188967A (ja) * | 1989-01-18 | 1990-07-25 | Nissan Motor Co Ltd | 半導体装置 |
JP3444931B2 (ja) * | 1993-08-25 | 2003-09-08 | 株式会社日立製作所 | 半導体装置及びその製造方法 |
JPH0974188A (ja) * | 1995-09-05 | 1997-03-18 | Mitsubishi Electric Corp | 半導体装置及びその製造方法 |
JPH09312391A (ja) * | 1996-05-22 | 1997-12-02 | Toshiba Corp | 半導体装置およびその製造方法 |
JPH10233451A (ja) * | 1997-02-21 | 1998-09-02 | Fujitsu Ltd | 半導体装置の製造方法 |
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JP3833903B2 (ja) * | 2000-07-11 | 2006-10-18 | 株式会社東芝 | 半導体装置の製造方法 |
US20020155721A1 (en) * | 2001-04-03 | 2002-10-24 | Macronix International Co., Ltd | Method of forming shallow trench isolation structure |
KR100434697B1 (ko) * | 2001-09-05 | 2004-06-07 | 주식회사 하이닉스반도체 | 반도체소자의 제조방법 |
CN1206711C (zh) * | 2002-03-28 | 2005-06-15 | 华邦电子股份有限公司 | 金属-氧化物-半导体晶体管的自对准硅化物的制备方法 |
DE102004012630A1 (de) | 2004-03-16 | 2005-06-30 | Infineon Technologies Ag | Feldeffekttransistor mit geringem Leckstrom und Verfahren zu seiner Herstellung |
JP3910971B2 (ja) * | 2004-03-26 | 2007-04-25 | 株式会社東芝 | 電界効果トランジスタ |
JP2006054423A (ja) * | 2004-07-13 | 2006-02-23 | Toshiba Corp | 半導体装置及びその製造方法 |
US20060252191A1 (en) * | 2005-05-03 | 2006-11-09 | Advanced Micro Devices, Inc. | Methodology for deposition of doped SEG for raised source/drain regions |
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US7884002B2 (en) | 2011-02-08 |
EP1958244A1 (en) | 2008-08-20 |
EP1958244B1 (en) | 2010-02-10 |
JP2009517860A (ja) | 2009-04-30 |
ATE457525T1 (de) | 2010-02-15 |
WO2007060641A1 (en) | 2007-05-31 |
DE602006012215D1 (de) | 2010-03-25 |
US20080299715A1 (en) | 2008-12-04 |
CN101317253A (zh) | 2008-12-03 |
CN101317253B (zh) | 2010-10-27 |
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