JP2007258743A - 半導体素子のゲート電極形成方法 - Google Patents
半導体素子のゲート電極形成方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 85
- 239000004065 semiconductor Substances 0.000 title claims abstract description 45
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 50
- 229920005591 polysilicon Polymers 0.000 claims abstract description 50
- 229910008486 TiSix Inorganic materials 0.000 claims abstract description 42
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 41
- 239000010703 silicon Substances 0.000 claims abstract description 41
- 229910008484 TiSi Inorganic materials 0.000 claims abstract description 32
- 238000000151 deposition Methods 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 238000000059 patterning Methods 0.000 claims abstract description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000005240 physical vapour deposition Methods 0.000 claims description 12
- 238000005530 etching Methods 0.000 claims description 11
- 230000007547 defect Effects 0.000 claims description 6
- 238000010405 reoxidation reaction Methods 0.000 claims description 4
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 3
- 229910021419 crystalline silicon Inorganic materials 0.000 claims description 2
- 229910021341 titanium silicide Inorganic materials 0.000 abstract description 34
- 238000007254 oxidation reaction Methods 0.000 abstract description 23
- 230000003647 oxidation Effects 0.000 abstract description 11
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 238000007669 thermal treatment Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 196
- 238000005755 formation reaction Methods 0.000 description 19
- 239000010936 titanium Substances 0.000 description 18
- 239000002245 particle Substances 0.000 description 10
- 239000003085 diluting agent Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000007740 vapor deposition Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 description 3
- 229910021342 tungsten silicide Inorganic materials 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 241000293849 Cordylanthus Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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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
- H01L29/6656—Unipolar field-effect transistors with an insulated gate, i.e. MISFET using multiple spacer layers, e.g. multiple sidewall spacers
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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
- 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
- H01L21/28247—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon passivation or protection of the electrode, e.g. using re-oxidation
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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
- H01L29/6659—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 both lightly doped source and drain extensions and source and drain self-aligned to the sides of the gate, e.g. lightly doped drain [LDD] MOSFET, double diffused drain [DDD] MOSFET
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- Computer Hardware Design (AREA)
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- Electrodes Of Semiconductors (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Abstract
【解決手段】半導体基板上にゲート酸化膜及びポリシリコン膜を形成する段階、前記ポリシリコン膜上に第1TiSix膜を蒸着する段階、前記第1TiSix膜上にシリコン膜を蒸着する段階、前記シリコン膜上に第2TiSix膜を蒸着する段階、熱処理によって、前記第1TiSix膜、前記シリコン膜及び前記第2TiSix膜からシリコン過剰状態のTiSi2膜を形成する段階、前記TiSi2膜上に絶縁膜を蒸着する段階、前記絶縁膜、TiSi2膜、ポリシリコン膜及びゲート酸化膜をパターニングして、TiSi2膜/ポリシリコン膜の積層構造のゲート電極を形成する段階、ゲート再酸化を行う段階を含む構成とする。
【選択図】図18
Description
12,32 ゲート酸化膜
13,33 ポリシリコン膜
15 チタンシリサイド膜
16 マスク膜
17 シリコン膜
18,39 酸化膜
30 酸化膜スペーサ
34 第1TiSix膜
35 シリコン膜
36 第2TiSix膜
37 TiSi2膜
38 絶縁膜
Claims (10)
- 半導体基板上にゲート酸化膜及びポリシリコン膜を形成する段階と、
前記ポリシリコン膜上に第1TiSix膜を蒸着する段階と、
前記第1TiSix膜上にシリコン膜を蒸着する段階と、
前記シリコン膜上に第2TiSix膜を蒸着する段階と、
熱処理によって、前記第1TiSix膜、前記シリコン膜及び前記第2TiSix膜からシリコン過剰状態のTiSi2膜を形成する段階と、
前記TiSi2膜上に絶縁膜を蒸着する段階と、
前記絶縁膜、TiSi2膜、ポリシリコン膜及びゲート酸化膜をパターニングして、TiSi2膜/ポリシリコン膜の積層構造のゲート電極を形成する段階と、
エッチングによる欠陥除去、残留しているポリシリコン膜の残留物除去及びゲート酸化膜の信頼性を向上させるためにゲート再酸化を行う段階を
含むことを特徴とする半導体素子のゲート電極形成方法。 - 前記第1及び第2TiSix膜は、Si:Tiのモル比が2.0乃至2.2のTiSixターゲットを用いる物理的気相成長で形成されることを特徴とする請求項1記載の半導体素子のゲート電極形成方法。
- 前記第1及び第2TiSix膜は300乃至800Å厚さで形成されることを特徴とする請求項1または請求項2記載の半導体素子のゲート電極形成方法。
- 前記シリコン膜は50乃至300Å厚さで形成されることを特徴とする請求項1記載の半導体素子のゲート電極形成方法。
- 前記シリコン膜は非晶質シリコン膜、結晶質シリコン膜、ドープしないシリコン膜、ドープしたシリコン膜のうちで選択される1つであることを特徴とする請求項1記載の半導体素子のゲート電極形成方法。
- 前記熱処理は炉熱処理または急速熱処理のうちで選択される1つで行われることを特徴とする請求項1記載の半導体素子のゲート電極形成方法。
- 前記炉熱処理は、700乃至900℃で、5乃至30分間行われることを特徴とする請求項6記載の半導体素子のゲート電極形成方法。
- 前記急速熱処理は、700乃至1,000℃で、10乃至60秒間行われることを特徴とする請求項6記載の半導体素子のゲート電極形成方法。
- 前記ゲート再酸化を行う段階は、700乃至850℃で、ドライ雰囲気下で行われることを特徴とする請求項1記載の半導体素子のゲート電極形成方法。
- 前記ゲート再酸化を行う段階は、酸化膜の厚さが20乃至100Åとなるように行われることを特徴とする請求項1記載の半導体素子のゲート電極形成方法。
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KR1019980059944A KR100318259B1 (ko) | 1998-12-29 | 1998-12-29 | 반도체소자의게이트전극형성방법 |
KR1998/P59944 | 1998-12-29 | ||
KR1998/P61862 | 1998-12-30 | ||
KR10-1998-0061862A KR100480907B1 (ko) | 1998-12-30 | 1998-12-30 | 반도체소자의게이트전극형성방법 |
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JP36548899A Division JP3988342B2 (ja) | 1998-12-29 | 1999-12-22 | 半導体素子のゲート電極形成方法 |
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JP2007258743A true JP2007258743A (ja) | 2007-10-04 |
JP4748484B2 JP4748484B2 (ja) | 2011-08-17 |
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JP2007141320A Expired - Fee Related JP4748484B2 (ja) | 1998-12-29 | 2007-05-29 | 半導体素子のゲート電極形成方法 |
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JP (2) | JP3988342B2 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100909628B1 (ko) | 2007-10-26 | 2009-07-27 | 주식회사 하이닉스반도체 | 반도체소자의 폴리메탈게이트 형성방법 |
US9299854B2 (en) | 2013-02-25 | 2016-03-29 | Renesas Electronics Corporation | Patterning a conductive film in a manufacturing method of semiconductor device |
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JP3396030B2 (ja) | 2001-04-27 | 2003-04-14 | 沖電気工業株式会社 | 半導体装置の製造方法 |
US6890824B2 (en) * | 2001-08-23 | 2005-05-10 | Matsushita Electric Industrial Co., Ltd. | Semiconductor device and manufacturing method thereof |
US7407882B1 (en) | 2004-08-27 | 2008-08-05 | Spansion Llc | Semiconductor component having a contact structure and method of manufacture |
KR20070003021A (ko) * | 2005-06-30 | 2007-01-05 | 주식회사 하이닉스반도체 | 반도체소자의 제조 방법 |
KR100724629B1 (ko) * | 2005-12-12 | 2007-06-04 | 주식회사 하이닉스반도체 | 반도체 소자 제조 방법 |
JP2008177316A (ja) * | 2007-01-18 | 2008-07-31 | Toshiba Corp | 半導体装置およびその製造方法 |
JP2012059961A (ja) * | 2010-09-09 | 2012-03-22 | Rohm Co Ltd | 半導体装置およびその製造方法 |
JP2016143732A (ja) * | 2015-01-30 | 2016-08-08 | 三菱電機株式会社 | 電荷結合素子、電荷結合素子の製造方法、および固体撮像装置 |
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KR100909628B1 (ko) | 2007-10-26 | 2009-07-27 | 주식회사 하이닉스반도체 | 반도체소자의 폴리메탈게이트 형성방법 |
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US9780232B2 (en) | 2013-02-25 | 2017-10-03 | Renesas Electronics Corporation | Memory semiconductor device with peripheral circuit multi-layer conductive film gate electrode and method of manufacture |
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US6468914B1 (en) | 2002-10-22 |
JP3988342B2 (ja) | 2007-10-10 |
JP2000196087A (ja) | 2000-07-14 |
JP4748484B2 (ja) | 2011-08-17 |
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