KR100549590B1 - 비휘발성 메모리 소자의 제조방법 - Google Patents
비휘발성 메모리 소자의 제조방법 Download PDFInfo
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- KR100549590B1 KR100549590B1 KR1020030074826A KR20030074826A KR100549590B1 KR 100549590 B1 KR100549590 B1 KR 100549590B1 KR 1020030074826 A KR1020030074826 A KR 1020030074826A KR 20030074826 A KR20030074826 A KR 20030074826A KR 100549590 B1 KR100549590 B1 KR 100549590B1
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- Prior art keywords
- film
- floating gate
- oxide film
- control gate
- nitride film
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 150000004767 nitrides Chemical class 0.000 claims abstract description 41
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 238000000151 deposition Methods 0.000 claims abstract description 17
- 125000006850 spacer group Chemical group 0.000 claims abstract description 10
- 238000001312 dry etching Methods 0.000 claims abstract description 8
- 238000000059 patterning Methods 0.000 claims abstract description 6
- 239000004065 semiconductor Substances 0.000 claims description 18
- 230000008021 deposition Effects 0.000 claims description 5
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 abstract description 13
- 238000007254 oxidation reaction Methods 0.000 abstract description 13
- 230000015572 biosynthetic process Effects 0.000 abstract description 7
- 241000293849 Cordylanthus Species 0.000 abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052710 silicon Inorganic materials 0.000 abstract description 3
- 239000010703 silicon Substances 0.000 abstract description 3
- 238000010030 laminating Methods 0.000 abstract 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 6
- 229920005591 polysilicon Polymers 0.000 description 6
- 210000003323 beak Anatomy 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 2
- 241000257303 Hymenoptera Species 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
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Classifications
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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
- H01L29/66825—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a floating gate
-
- 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
-
- 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
- H01L21/3105—After-treatment
- H01L21/31051—Planarisation of the insulating layers
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Non-Volatile Memory (AREA)
Abstract
Description
Claims (6)
- 반도체 기판상에 형성된 STI영역 사이의 일정 영역에 플로팅 게이트 산화막, 플로팅 게이트 도전막 및 절연막을 순차적으로 적층하여 플로팅 게이트를 형성하는 단계;상기 결과물 전면에 제 1 질화막, 산화막 및 제 2 질화막을 순차적으로 증착하는 단계;상기 결과물에 대해 건식각을 실시하여 상기 플로팅 게이트의 측벽에 제 1 질화막, 산화막 및 제 2 질화막을 순차적으로 증착된 구조의 스페이서를 형성하는 단계;상기 플로팅 게이트 양측의 반도체 기판상에 컨트롤 게이트 산화막을 형성하는 단계; 및상기 컨트롤 게이트 산화막 상에 컨트롤 게이트 도전막을 증착한 후 패터닝하여 컨트롤 게이트를 형성하는 단계를 포함하여 구성되는 것을 특징으로 하는 비휘발성 메모리 소자의 제조방법.
- 반도체 기판상에 형성된 STI영역 사이의 일정 영역에 플로팅 게이트 산화막, 플로팅 게이트 도전막 및 절연막을 순차적으로 적층하여 플로팅 게이트를 형성하는 단계;상기 반도체 기판 전면에 600-700℃의 증착온도와 100~300mTorr의 증착압력하에서 제1 질화막을 30-70Å의 두께로 증착하는 단계;상기 제1 질화막 위에 산화막을 증착하는 단계;상기 산화막 위에 600-700℃의 증착온도와 100~300mTorr의 증착압력하에서 제2 질화막을 30-70Å의 두께로 증착하는 단계;상기 결과물에 대해 건식식각을 실시하여 상기 플로팅 게이트의 측벽에 제1질화막, 산화막 및 제2 질화막이 순차적으로 적층된 스페이서를 형성하는 단계;상기 플로팅 게이트 양 측의 반도체 기판상에 컨트롤 게이트 산화막을 형성하는 단계; 및상기 컨트롤 게이트 산화막 상에 컨트롤 게이트 도전막을 증착한 후, 패터닝하여 컨트롤 게이트를 형성하는 단계를 포함하는 비휘발성 메모리 소자의 제조방법.
- 제1항 또는 제2항에 있어서, 상기 산화막은 온도 600~750℃의 조건 하에서, TEOS 가스, SiH4+N2O 또는 SiH2Cl2+N2O 가스를 사용하여 형성하는 것을 특징으로 하는 비휘발성 메모리 소자의 제조방법.
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KR1020030074826A KR100549590B1 (ko) | 2003-10-24 | 2003-10-24 | 비휘발성 메모리 소자의 제조방법 |
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KR1020030074826A KR100549590B1 (ko) | 2003-10-24 | 2003-10-24 | 비휘발성 메모리 소자의 제조방법 |
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KR20050039374A KR20050039374A (ko) | 2005-04-29 |
KR100549590B1 true KR100549590B1 (ko) | 2006-02-08 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100997781B1 (ko) * | 2003-11-21 | 2010-12-02 | 매그나칩 반도체 유한회사 | 이이피롬 소자의 제조방법 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100997781B1 (ko) * | 2003-11-21 | 2010-12-02 | 매그나칩 반도체 유한회사 | 이이피롬 소자의 제조방법 |
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KR20050039374A (ko) | 2005-04-29 |
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