JP2004207739A - ナノドットを有するメモリ製造方法 - Google Patents
ナノドットを有するメモリ製造方法 Download PDFInfo
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- 230000015654 memory Effects 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000003860 storage Methods 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000002096 quantum dot Substances 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 238000005229 chemical vapour deposition Methods 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 5
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 4
- 238000004544 sputter deposition Methods 0.000 claims description 4
- 238000007743 anodising Methods 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 238000000059 patterning Methods 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 2
- 239000002105 nanoparticle Substances 0.000 abstract description 6
- 238000002048 anodisation reaction Methods 0.000 abstract description 3
- 238000009827 uniform distribution Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 7
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 150000004706 metal oxides Chemical class 0.000 description 4
- 238000004626 scanning electron microscopy Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 2
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000000992 sputter etching Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
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- 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
- H01L29/40—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
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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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/401—Multistep manufacturing processes
- H01L29/4011—Multistep manufacturing processes for data storage electrodes
- H01L29/40117—Multistep manufacturing processes for data storage electrodes the electrodes comprising a charge-trapping insulator
-
- 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
- H01L29/40—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
- H01L29/42332—Gate electrodes for transistors with a floating gate with the floating gate formed by two or more non connected parts, e.g. multi-particles flating gate
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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
- H01L29/788—Field effect transistors with field effect produced by an insulated gate with floating gate
- H01L29/7881—Programmable transistors with only two possible levels of programmation
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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
- H01L29/792—Field effect transistors with field effect produced by an insulated gate with charge trapping gate insulator, e.g. MNOS-memory transistors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/70—Nanostructure
- Y10S977/701—Integrated with dissimilar structures on a common substrate
- Y10S977/723—On an electrically insulating substrate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S977/00—Nanotechnology
- Y10S977/70—Nanostructure
- Y10S977/773—Nanoparticle, i.e. structure having three dimensions of 100 nm or less
- Y10S977/774—Exhibiting three-dimensional carrier confinement, e.g. quantum dots
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- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Non-Volatile Memory (AREA)
- Semiconductor Memories (AREA)
Abstract
【解決手段】ソースとドレイン電極が形成された基板上に第1絶縁層、電荷貯蔵層、犠牲層及び、金属層を順に積層する第1段階と、金属層を陽極酸化して複数のホールを形成した後、ホールに露出された犠牲層を酸化させる第2段階と、酸化された金属層を除去して酸化された犠牲層をマスクとして犠牲層及び電荷貯蔵層をエッチングして電荷貯蔵層をナノドットにパターニングする第3段階及び、酸化された犠牲層を除去してパターニングされた電荷貯蔵層の上部に第2絶縁層及び、ゲート電極を成膜し、第1絶縁層、電荷貯蔵層、第2絶縁層及び、ゲート電極を所定形態にパターニングする第4段階を含むメモリ製造方法。分布が均一なナノサイズのストーリッジノードを有するメモリが具現できる。
【選択図】 図1K
Description
102 第1絶縁層
103 電荷貯蔵層
109 第2絶縁層
111 ゲート電極
S ソース電極
D ドレイン電極
Claims (8)
- ソースとドレイン電極とが形成された基板上に第1絶縁層、電荷貯蔵層、犠牲層及び、金属層を順に積層する第1段階と、
前記金属層を陽極酸化して複数のホールを形成した後、前記ホールに露出された前記犠牲層を酸化させる第2段階と、
前記酸化された金属層を除去して前記酸化された犠牲層をマスクとして前記犠牲層及び前記電荷貯蔵層をエッチングして前記電荷貯蔵層をナノドットにパターニングする第3段階と、
前記酸化された犠牲層を除去し、パターニングされた前記電荷貯蔵層の上部に第2絶縁層及び、ゲート電極を成膜し、前記第1絶縁層、電荷貯蔵層、第2絶縁層及び、ゲート電極を所定形態にパターニングする第4段階と、を含むことを特徴とするナノドットを有するメモリ製造方法。 - 前記電荷貯蔵層はSi、Si3N4及び、Al2O3のうち何れか1つで形成することを特徴とする請求項1に記載のナノドットを有するメモリ製造方法。
- 前記犠牲層はTaで形成することを特徴とする請求項1に記載のナノドットを有するメモリ製造方法。
- 前記金属層はAlまたはAl合金で形成することを特徴とする請求項1に記載のナノドットを有するメモリ製造方法。
- 前記第1及び第2絶縁層はSiO2で形成することを特徴とする請求項1に記載のナノドットを有するメモリ製造方法。
- 前記第1段階で、前記第1絶縁層、電荷貯蔵層、犠牲層、金属層及び第2絶縁層を化学気相成膜法、スパッタリング法またはエバポレーション法を利用して成膜することを特徴とする請求項1に記載のナノドットを有するメモリ製造方法。
- 前記第3段階で、前記電荷貯蔵層をナノドット状の柱が複数配列されたドットアレイ構造にパターニングすることを特徴とする請求項1に記載のナノドットを有するメモリ製造方法。
- 前記ナノドット状の円筒が蜂の巣形状に配列されるようにパターニングすることを特徴とする請求項7に記載のナノドットを有するメモリ製造方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20020082387A KR100763897B1 (ko) | 2002-12-23 | 2002-12-23 | 나노도트를 가지는 메모리 제조방법 |
Publications (2)
Publication Number | Publication Date |
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JP2004207739A true JP2004207739A (ja) | 2004-07-22 |
JP4434721B2 JP4434721B2 (ja) | 2010-03-17 |
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JP2003425346A Expired - Fee Related JP4434721B2 (ja) | 2002-12-23 | 2003-12-22 | ナノドットを有するメモリ製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6913984B2 (ja) |
EP (1) | EP1437775B1 (ja) |
JP (1) | JP4434721B2 (ja) |
KR (1) | KR100763897B1 (ja) |
CN (1) | CN100336201C (ja) |
DE (1) | DE60333819D1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2006129367A1 (ja) * | 2005-06-02 | 2006-12-07 | Misuzu R & D Ltd. | 不揮発性メモリ |
US20130157453A1 (en) * | 2011-12-20 | 2013-06-20 | SK Hynix Inc. | Methods of manufacturing semiconductor device |
Families Citing this family (31)
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KR100585462B1 (ko) * | 2003-12-26 | 2006-06-07 | 한국전자통신연구원 | 정보 저장 및 독출 장치 |
KR100601943B1 (ko) * | 2004-03-04 | 2006-07-14 | 삼성전자주식회사 | 고르게 분포된 실리콘 나노 도트가 포함된 게이트를구비하는 메모리 소자의 제조 방법 |
US7208793B2 (en) * | 2004-11-23 | 2007-04-24 | Micron Technology, Inc. | Scalable integrated logic and non-volatile memory |
US7170128B2 (en) * | 2004-12-02 | 2007-01-30 | Atmel Corporation | Multi-bit nanocrystal memory |
JP4442454B2 (ja) * | 2005-02-16 | 2010-03-31 | 株式会社日立製作所 | 不揮発性半導体メモリの製造方法 |
CN100483613C (zh) * | 2005-02-24 | 2009-04-29 | 鸿富锦精密工业(深圳)有限公司 | 量子点制作方法 |
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US7173304B2 (en) * | 2005-06-06 | 2007-02-06 | Micron Technology, Inc. | Method of manufacturing devices comprising conductive nano-dots, and devices comprising same |
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KR100690925B1 (ko) * | 2005-12-01 | 2007-03-09 | 삼성전자주식회사 | 나노 크리스탈 비휘발성 반도체 집적 회로 장치 및 그 제조방법 |
KR100718142B1 (ko) * | 2005-12-02 | 2007-05-14 | 삼성전자주식회사 | 금속층-절연층-금속층 구조의 스토리지 노드를 구비하는불휘발성 메모리 소자 및 그 동작 방법 |
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KR100740613B1 (ko) * | 2006-07-03 | 2007-07-18 | 삼성전자주식회사 | 비휘발성 기억 소자의 형성 방법 |
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KR100933831B1 (ko) * | 2006-09-06 | 2009-12-24 | 주식회사 하이닉스반도체 | 플래시 메모리 소자의 플로팅 게이트 형성 방법 |
US20080093744A1 (en) * | 2006-10-23 | 2008-04-24 | Wang Lorraine C | Anodization |
KR100858085B1 (ko) * | 2006-12-18 | 2008-09-10 | 삼성전자주식회사 | 나노닷을 전하 트랩 사이트로 이용하는 전하 트랩형 메모리소자 |
US7790560B2 (en) * | 2007-03-12 | 2010-09-07 | Board Of Regents Of The Nevada System Of Higher Education | Construction of flash memory chips and circuits from ordered nanoparticles |
US20110151190A1 (en) * | 2007-05-08 | 2011-06-23 | Jae-Hyun Chung | Shadow edge lithography for nanoscale patterning and manufacturing |
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-
2002
- 2002-12-23 KR KR20020082387A patent/KR100763897B1/ko not_active IP Right Cessation
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2003
- 2003-11-21 CN CNB2003101164388A patent/CN100336201C/zh not_active Expired - Lifetime
- 2003-11-25 DE DE60333819T patent/DE60333819D1/de not_active Expired - Lifetime
- 2003-11-25 EP EP03257431A patent/EP1437775B1/en not_active Expired - Lifetime
- 2003-12-22 JP JP2003425346A patent/JP4434721B2/ja not_active Expired - Fee Related
- 2003-12-23 US US10/743,377 patent/US6913984B2/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006129367A1 (ja) * | 2005-06-02 | 2006-12-07 | Misuzu R & D Ltd. | 不揮発性メモリ |
US20130157453A1 (en) * | 2011-12-20 | 2013-06-20 | SK Hynix Inc. | Methods of manufacturing semiconductor device |
US8999784B2 (en) * | 2011-12-20 | 2015-04-07 | SK Hynix Inc. | Methods of manufacturing semiconductor device |
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Publication number | Publication date |
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US6913984B2 (en) | 2005-07-05 |
EP1437775B1 (en) | 2010-08-18 |
CN1510740A (zh) | 2004-07-07 |
US20040137704A1 (en) | 2004-07-15 |
DE60333819D1 (de) | 2010-09-30 |
EP1437775A2 (en) | 2004-07-14 |
JP4434721B2 (ja) | 2010-03-17 |
KR100763897B1 (ko) | 2007-10-05 |
EP1437775A3 (en) | 2006-08-30 |
CN100336201C (zh) | 2007-09-05 |
KR20040056409A (ko) | 2004-07-01 |
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