KR100843061B1 - 비휘발성 메모리 소자의 제조 방법 - Google Patents
비휘발성 메모리 소자의 제조 방법 Download PDFInfo
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- KR100843061B1 KR100843061B1 KR1020060131118A KR20060131118A KR100843061B1 KR 100843061 B1 KR100843061 B1 KR 100843061B1 KR 1020060131118 A KR1020060131118 A KR 1020060131118A KR 20060131118 A KR20060131118 A KR 20060131118A KR 100843061 B1 KR100843061 B1 KR 100843061B1
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000000137 annealing Methods 0.000 claims abstract description 29
- 150000004767 nitrides Chemical class 0.000 claims abstract description 28
- 229910021332 silicide Inorganic materials 0.000 claims abstract description 20
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 239000004065 semiconductor Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 48
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical group [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 claims description 11
- 229910021342 tungsten silicide Inorganic materials 0.000 claims description 11
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 10
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000000151 deposition Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 4
- 238000005468 ion implantation Methods 0.000 claims description 4
- 230000008021 deposition Effects 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 239000012298 atmosphere Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract 1
- 230000035882 stress Effects 0.000 description 8
- 238000002955 isolation Methods 0.000 description 4
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005137 deposition process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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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 at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System 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
- H01L21/28158—Making the insulator
- H01L21/28167—Making the insulator on single crystalline silicon, e.g. using a liquid, i.e. chemical oxidation
- H01L21/28176—Making the insulator on single crystalline silicon, e.g. using a liquid, i.e. chemical oxidation with a treatment, e.g. annealing, after the formation of the definitive gate conductor
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/823475—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type interconnection or wiring or contact manufacturing related aspects
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/401—Multistep manufacturing processes
- H01L29/4011—Multistep manufacturing processes for data storage electrodes
- H01L29/40114—Multistep manufacturing processes for data storage electrodes the electrodes comprising a conductor-insulator-conductor-insulator-semiconductor structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42324—Gate electrodes for transistors with a floating gate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/66825—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a floating gate
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B41/00—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates
- H10B41/30—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by the memory core region
Abstract
Description
Claims (11)
- 반도체 기판상에 게이트 절연층, 제 1 도전층, 유전체층, 제 2 도전층 및 금속-실리사이드층이 적층된 구조를 갖는 게이트들을 형성하는 단계;상기 금속-실리사이드층을 상기 유전체층의 제1 어닐링 온도보다 같거나 낮은 제2 어닐링 온도에서 어닐링하는 단계;전체 구조상에 버퍼 산화막을 형성하는 단계; 및상기 버퍼 산화층 상에 질화층을 형성하는 단계를 포함하는 비휘발성 메모리 소자의 제조 방법.
- 제 1 항에 있어서,상기 유전체층은 산화막-질화막-산화막이 적층된 ONO구조로 형성하며, 800℃ 내지 850℃의 상기 제1 어닐링 온도에서 어닐링하는 비휘발성 메모리 소자의 제조 방법.
- 제 1 항에 있어서,상기 금속-실리사이드층의 상기 제2 어닐링 온도는 750℃ 내지 800℃의 온도범위인 비휘발성 메모리 소자의 제조 방법.
- 제 1 항에 있어서,상기 금속-실리사이드층은 텅스텐-실리사이드층인 비휘발성 메모리 소자의 제조 방법.
- 제 4 항에 있어서,상기 텅스텐-실리사이드층의 어닐링 공정은,750℃의 온도에서 진행하는 로딩 단계;750℃의 온도에서 800℃의 온도까지 상승시키며 진행하는 램프 업 단계;800℃의 온도에서 진행하는 어닐 홀딩 단계;800℃의 온도에서 750℃의 온도까지 하강시키며 진행하는 램프 다운 단계; 및750℃의 온도에서 진행하는 램프 다운 단계를 포함하는 비휘발성 메모리 소자의 제조 방법.
- 제 5 항에 있어서,상기 텅스텐-실리사이드층의 상기 어닐링 공정은 N2 분위기에서 진행하는 비 휘발성 메모리 소자의 제조 방법.
- 제 1 항에 있어서,상기 금속-실리사이드층의 상기 어닐링 공정후에,상기 반도체 기판에 불순물 이온주입 영역을 형성하는 단계; 및게이트 스페이서 절연층을 형성하는 단계를 더 포함하는 비휘발성 메모리 소자의 제조 방법.
- 제 1 항에 있어서,상기 질화층은 플라즈마 증가 화학적 기상 증착(plasma enhanced chemical vapor deposition; PE-CVD)법으로 형성하는 비휘발성 메모리 소자의 제조 방법.
- 제 1 항에 있어서,상기 질화층은 400℃ 내지 730℃의 온도범위에서 형성하는 비휘발성 메모리 소자의 제조 방법.
- 제 1 항에 있어서,상기 질화층의 형성 공정은,N2 분위기에서 대기압으로 유지시키고, 400℃의 온도에서 진행하는 로딩 단계;N2 분위기에서 5Torr의 압력으로 유지시키고, 730℃의 온도까지 높이는 램프 업 단계;N2, NH3, 및 DCS(SiH2Cl2)가 혼합된 분위기에서 0.35 Torr를 유지시키고, 730℃의 온도에서 진행하는 증착 단계;N2 분위기에서 0.35Torr의 압력으로 유지시키고, 400℃의 온도까지 낮추는 램프 다운 단계; 및N2 분위기에서 대기압이 되도록 서서히 압력을 올리면서, 400℃의 온도에서 진행하는 언로딩 단계를 포함하는 비휘발성 메모리 소자의 제조 방법.
- 제 10 항에 있어서,상기 램프 업 단계는 1분당 5℃씩 온도를 상승시키고, 상기 램프 다운 단계는 1분당 3℃씩 온도를 하강시키는 비휘발성 메모리 소자의 제조 방법.
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US11/646,728 US7553729B2 (en) | 2006-05-26 | 2006-12-28 | Method of manufacturing non-volatile memory device |
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KR1020060047684 | 2006-05-26 | ||
KR20060047684 | 2006-05-26 |
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KR100843061B1 true KR100843061B1 (ko) | 2008-07-01 |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020001253A (ko) * | 2000-06-27 | 2002-01-09 | 박종섭 | 플래시 이이피롬의 폴리사이드 산화 방법 |
KR20020007861A (ko) * | 2000-07-19 | 2002-01-29 | 박종섭 | 플래쉬 메모리 소자의 워드라인 형성 방법 |
KR20040002301A (ko) * | 2002-06-29 | 2004-01-07 | 주식회사 하이닉스반도체 | 반도체 소자의 제조 방법 |
KR20050041433A (ko) * | 2003-10-31 | 2005-05-04 | 주식회사 하이닉스반도체 | 게이트전극 구조 형성방법 |
KR20050073050A (ko) * | 2004-01-08 | 2005-07-13 | 주식회사 하이닉스반도체 | 반도체 소자의 제조방법 |
KR20060028765A (ko) * | 2003-06-12 | 2006-04-03 | 어드밴스드 마이크로 디바이시즈, 인코포레이티드 | 비휘발성 메모리 디바이스 |
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- 2006-12-20 KR KR1020060131118A patent/KR100843061B1/ko active IP Right Grant
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- 2007-01-09 CN CNB2007100006031A patent/CN100511650C/zh not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20020001253A (ko) * | 2000-06-27 | 2002-01-09 | 박종섭 | 플래시 이이피롬의 폴리사이드 산화 방법 |
KR20020007861A (ko) * | 2000-07-19 | 2002-01-29 | 박종섭 | 플래쉬 메모리 소자의 워드라인 형성 방법 |
KR20040002301A (ko) * | 2002-06-29 | 2004-01-07 | 주식회사 하이닉스반도체 | 반도체 소자의 제조 방법 |
KR20060028765A (ko) * | 2003-06-12 | 2006-04-03 | 어드밴스드 마이크로 디바이시즈, 인코포레이티드 | 비휘발성 메모리 디바이스 |
KR20050041433A (ko) * | 2003-10-31 | 2005-05-04 | 주식회사 하이닉스반도체 | 게이트전극 구조 형성방법 |
KR20050073050A (ko) * | 2004-01-08 | 2005-07-13 | 주식회사 하이닉스반도체 | 반도체 소자의 제조방법 |
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Publication number | Publication date |
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CN101079396A (zh) | 2007-11-28 |
CN100511650C (zh) | 2009-07-08 |
KR20070113953A (ko) | 2007-11-29 |
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