KR100871006B1 - 얇은 텅스텐 실리사이드층 증착 및 게이트 금속 집적화 - Google Patents
얇은 텅스텐 실리사이드층 증착 및 게이트 금속 집적화 Download PDFInfo
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- KR100871006B1 KR100871006B1 KR1020077004146A KR20077004146A KR100871006B1 KR 100871006 B1 KR100871006 B1 KR 100871006B1 KR 1020077004146 A KR1020077004146 A KR 1020077004146A KR 20077004146 A KR20077004146 A KR 20077004146A KR 100871006 B1 KR100871006 B1 KR 100871006B1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—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
- 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
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/28008—Making conductor-insulator-semiconductor electrodes
- H01L21/28017—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon
- H01L21/28026—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor
- H01L21/28035—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being silicon, e.g. polysilicon, with or without impurities
- H01L21/28044—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being silicon, e.g. polysilicon, with or without impurities the conductor comprising at least another non-silicon conductive layer
- H01L21/28061—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being silicon, e.g. polysilicon, with or without impurities the conductor comprising at least another non-silicon conductive layer the conductor comprising a metal or metal silicide formed by deposition, e.g. sputter deposition, i.e. without a silicidation reaction
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/60—Electrodes characterised by their materials
- H10D64/66—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes
- H10D64/661—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon having vertical doping variation
- H10D64/662—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon having vertical doping variation the conductor further comprising additional layers, e.g. multiple silicon layers having different crystal structures
- H10D64/663—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon having vertical doping variation the conductor further comprising additional layers, e.g. multiple silicon layers having different crystal structures the additional layers comprising a silicide layer contacting the layer of silicon, e.g. polycide gates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—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
- 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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/32051—Deposition of metallic or metal-silicide layers
- H01L21/32053—Deposition of metallic or metal-silicide layers of metal-silicide layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/60—Electrodes characterised by their materials
- H10D64/66—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes
- H10D64/661—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon having vertical doping variation
- H10D64/662—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon having vertical doping variation the conductor further comprising additional layers, e.g. multiple silicon layers having different crystal structures
- H10D64/664—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon having vertical doping variation the conductor further comprising additional layers, e.g. multiple silicon layers having different crystal structures the additional layers comprising a barrier layer between the layer of silicon and an upper metal or metal silicide layer
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Abstract
Description
Claims (20)
- 기판 상에 게이트 전극의 층들을 증착하는 방법으로서,상기 기판 상에 폴리실리콘층을 증착하는 단계;상기 폴리실리콘층 상에 약 20Å 내지 약 80Å의 두께를 갖는 텅스텐 실리사이드층을 증착하는 단계; 및상기 텅스텐 실리사이드층 상에 금속층을 증착하는 단계를 포함하며, 상기 폴리실리콘층은 도핑되고, 상기 텅스텐 실리사이드층이 증착되기 이전에 상기 폴리실리콘층 보다 낮은 도펀트 농도를 갖는 폴리실리콘-풍부층이 상기 폴리실리콘층 상에 증착되는, 게이트 전극의 층들을 증착하는 방법.
- 제 1 항에 있어서,상기 텅스텐 실리사이드층을 증착하는 단계는 열화학적 기상 증착 프로세스에서 실리콘 소스 및 텅스텐 소스를 포함하는 가스 혼합물을 반응시키는 단계를 포함하는 것을 특징으로 하는 게이트 전극의 층들을 증착하는 방법.
- 제 2 항에 있어서,상기 실리콘 소스는 디클로로실란이며 상기 텅스텐 소스는 텅스텐 헥사플루오라이드인 것을 특징으로 하는 게이트 전극의 층들을 증착하는 방법.
- 제 2 항에 있어서,상기 실리콘 소스는 실란이며 상기 텅스텐 소스는 텅스텐 헥사플루오라이드 인 것을 특징으로 하는 게이트 전극의 층들을 증착하는 방법.
- 삭제
- 삭제
- 삭제
- 제 1 항에 있어서,상기 텅스텐 실리사이드층은 약 2.1:1 내지 약 3.0:1의 실리콘 대 텅스텐 비 율을 가지는 것을 특징으로 하는 게이트 전극의 층들을 증착하는 방법.
- 제 1 항에 있어서,상기 금속층은 텅스텐층, 텅스텐 질화물층, 또는 이들의 조합물인 것을 특징으로 하는 게이트 전극의 층들을 증착하는 방법.
- 제 1 항에 있어서,상기 폴리실리콘층을 증착한 이후 및 상기 텅스텐 실리사이드층을 증착하기 이전에 상기 기판을 세정하는 단계를 더 포함하며, 상기 기판을 세정하는 단계는 상기 기판을 불산(hydrofluoric acid)에 노출하는 단계를 포함하는 것을 특징으로 하는 게이트 전극의 층들을 증착하는 방법.
- 기판 상에 게이트 전극의 층들을 증착하는 방법으로서,상기 기판 상에 폴리실리콘층을 증착하는 단계;상기 폴리실리콘층 상에 약 20Å 내지 약 80Å의 두께를 갖는 텅스텐 실리사이드층을 증착하는 단계; 및상기 텅스텐 실리사이드층 상에 금속층을 증착하는 단계를 포함하며, 상기 텅스텐 실리사이드층을 증착하는 단계는,상기 폴리실리콘층을 실란에 노출하는 단계;상기 텅스텐 실리사이드층이 증착되도록 디클로로실란 및 텅스텐 헥사플루오라이드를 포함하는 가스 혼합물을 반응시키는 단계; 및상기 텅스텐 실리사이드층을 실란에 노출하는 단계를 포함하고, 상기 폴리실리콘층은 도핑되며, 상기 텅스텐 실리사이드층이 증착되기 이전에 상기 폴리실리콘층 보다 낮은 도펀트 농도를 갖는 폴리실리콘-풍부층이 상기 폴리실리콘층 상에 증착되는, 게이트 전극의 층들을 증착하는 방법.
- 제 11 항에 있어서,상기 텅스텐 실리사이드층은 기판 프로세싱 챔버에서 증착되며, 상기 텅스텐 실리사이드층을 실란에 노출하는 단계는 약 0.8 Torr 내지 약 2 Torr의 압력에서 약 100sccm 내지 약 700sccm의 유량으로 상기 기판 프로세싱 챔버에 실란을 주입하는 단계를 포함하는 것을 특징으로 하는 게이트 전극의 층들을 증착하는 방법.
- 제 11 항에 있어서,상기 폴리실리콘층을 실란에 노출하는 단계는 약 5 Torr 내지 약 10 Torr의 압력에서 약 300 sccm 내지 약 1200sccm의 유량으로 기판 프로세싱 챔버에 실란을 주입하는 단계를 포함하는 것을 특징으로 하는 게이트 전극의 층들을 증착하는 방법.
- 삭제
- 제 11 항에 있어서,상기 기판은 상기 텅스텐 실리사이드층을 증착하는 동안 약 400℃ 내지 약 650℃의 온도로 가열되는 기판 지지 부재 상에서 지지되는 것을 특징으로 하는 게이트 전극의 층들을 증착하는 방법.
- 제 11 항에 있어서,상기 폴리실리콘층을 증착한 이후 및 상기 텅스텐 실리사이드층을 증착하기 이전에 상기 기판을 세정하는 단계를 더 포함하며, 상기 기판을 세정하는 단계는 상기 기판을 불산에 노출하는 단계를 포함하는 것을 특징으로 하는 게이트 전극의 층들을 증착하는 방법.
- 기판 처리 방법으로서,통합된 프로세싱 시스템의 제 1 챔버에서 상기 기판상에 폴리실리콘층을 증착하는 단계;상기 통합된 프로세싱 시스템의 제 2 챔버에서 상기 폴리실리콘층상에 약 20Å 내지 약 80Å의 두께를 가지는 텅스텐 실리사이드층을 증착하는 단계; 및상기 텅스텐 실리사이드층상에 금속층을 증착하는 단계를 포함하며, 상기 텅스텐 실리사이드층을 증착하는 단계는,상기 폴리실리콘층을 실란에 노출하는 단계;상기 텅스텐 실리사이드층을 증착하기 위해 디클로로실란 또는 실란 및 텅스텐 헥사플루오라이드를 포함하는 가스 혼합물을 반응시키는 단계; 및상기 텅스텐 실리사이드층을 실란에 노출하는 단계를 포함하고, 상기 기판은 폴리실리콘층을 증착한 이후 및 텅스텐 실리사이드층을 증착하기 이전에 상기 통합된 프로세싱 시스템 외부의 대기에 노출되지 않으며, 상기 텅스텐 실리사이드층이 증착되기 이전에 상기 폴리실리콘층 보다 낮은 도펀트 농도를 갖는 폴리실리콘-풍부층이 상기 폴리실리콘층 상에 증착되는, 기판 처리 방법.
- 제 17 항에 있어서,상기 텅스텐 실리사이드층 상에 금속층을 증착하는 단계를 더 포함하며, 상기 폴리실리콘층, 텅스텐 실리사이드층, 및 금속층은 상기 기판 상에 게이트 전극의 층들을 형성하는 것을 특징으로 하는 기판 처리 방법.
- 제 18 항에 있어서,상기 금속층은 텅스텐층, 텅스텐 질화물층, 또는 이들의 조합물인 것을 특징으로 하는 기판 처리 방법.
- 삭제
Applications Claiming Priority (2)
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US59258504P | 2004-07-30 | 2004-07-30 | |
US60/592,585 | 2004-07-30 |
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KR20070037645A KR20070037645A (ko) | 2007-04-05 |
KR100871006B1 true KR100871006B1 (ko) | 2008-11-27 |
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US (1) | US20060024959A1 (ko) |
JP (1) | JP2008508721A (ko) |
KR (1) | KR100871006B1 (ko) |
CN (1) | CN1989597A (ko) |
WO (1) | WO2006019603A2 (ko) |
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US7964505B2 (en) * | 2005-01-19 | 2011-06-21 | Applied Materials, Inc. | Atomic layer deposition of tungsten materials |
US7211144B2 (en) * | 2001-07-13 | 2007-05-01 | Applied Materials, Inc. | Pulsed nucleation deposition of tungsten layers |
JP2005518088A (ja) | 2001-07-16 | 2005-06-16 | アプライド マテリアルズ インコーポレイテッド | タングステン複合膜の形成 |
US20030029715A1 (en) * | 2001-07-25 | 2003-02-13 | Applied Materials, Inc. | An Apparatus For Annealing Substrates In Physical Vapor Deposition Systems |
US6833161B2 (en) * | 2002-02-26 | 2004-12-21 | Applied Materials, Inc. | Cyclical deposition of tungsten nitride for metal oxide gate electrode |
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US7211508B2 (en) * | 2003-06-18 | 2007-05-01 | Applied Materials, Inc. | Atomic layer deposition of tantalum based barrier materials |
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US20080206987A1 (en) * | 2007-01-29 | 2008-08-28 | Gelatos Avgerinos V | Process for tungsten nitride deposition by a temperature controlled lid assembly |
US7910446B2 (en) * | 2007-07-16 | 2011-03-22 | Applied Materials, Inc. | Integrated scheme for forming inter-poly dielectrics for non-volatile memory devices |
WO2009042713A1 (en) * | 2007-09-28 | 2009-04-02 | Applied Materials, Inc. | Vapor deposition of tungsten materials |
KR100940161B1 (ko) * | 2007-12-27 | 2010-02-03 | 주식회사 동부하이텍 | 모스트랜지스터 및 그 제조방법 |
KR101603056B1 (ko) * | 2010-06-10 | 2016-03-14 | 어플라이드 머티어리얼스, 인코포레이티드 | 강화된 이온화 및 무선 주파수 전력 커플링을 갖는 낮은 비저항의 텅스텐 물리 기상 증착 |
US11043386B2 (en) | 2012-10-26 | 2021-06-22 | Applied Materials, Inc. | Enhanced spatial ALD of metals through controlled precursor mixing |
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KR102441431B1 (ko) | 2016-06-06 | 2022-09-06 | 어플라이드 머티어리얼스, 인코포레이티드 | 표면을 갖는 기판을 프로세싱 챔버에 포지셔닝하는 단계를 포함하는 프로세싱 방법 |
JP6896305B2 (ja) * | 2017-11-09 | 2021-06-30 | 国立研究開発法人産業技術総合研究所 | 半導体装置及びその製造方法 |
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- 2005-07-07 JP JP2007523590A patent/JP2008508721A/ja not_active Withdrawn
- 2005-07-07 KR KR1020077004146A patent/KR100871006B1/ko not_active Expired - Fee Related
- 2005-07-07 CN CNA2005800243869A patent/CN1989597A/zh active Pending
- 2005-07-07 WO PCT/US2005/024163 patent/WO2006019603A2/en active Application Filing
- 2005-07-12 US US11/179,274 patent/US20060024959A1/en not_active Abandoned
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KR20010008590A (ko) * | 1999-07-02 | 2001-02-05 | 김영환 | 반도체장치의 게이트전극 제조방법 |
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WO2006019603A3 (en) | 2006-07-13 |
WO2006019603A2 (en) | 2006-02-23 |
KR20070037645A (ko) | 2007-04-05 |
CN1989597A (zh) | 2007-06-27 |
US20060024959A1 (en) | 2006-02-02 |
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