JP3889023B2 - 可変抵抗素子とその製造方法並びにそれを備えた記憶装置 - Google Patents
可変抵抗素子とその製造方法並びにそれを備えた記憶装置 Download PDFInfo
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- JP3889023B2 JP3889023B2 JP2005228600A JP2005228600A JP3889023B2 JP 3889023 B2 JP3889023 B2 JP 3889023B2 JP 2005228600 A JP2005228600 A JP 2005228600A JP 2005228600 A JP2005228600 A JP 2005228600A JP 3889023 B2 JP3889023 B2 JP 3889023B2
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body
- H01L27/10—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/0002—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using resistive RAM [RRAM] elements
- G11C13/0007—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using resistive RAM [RRAM] elements comprising metal oxide memory material, e.g. perovskites
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/0002—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using resistive RAM [RRAM] elements
- G11C13/0021—Auxiliary circuits
- G11C13/0023—Address circuits or decoders
- G11C13/0026—Bit-line or column circuits
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B63/00—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices
- H10B63/30—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices comprising selection components having three or more electrodes, e.g. transistors
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/011—Manufacture or treatment of multistable switching devices
- H10N70/021—Formation of the switching material, e.g. layer deposition
- H10N70/028—Formation of the switching material, e.g. layer deposition by conversion of electrode material, e.g. oxidation
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/011—Manufacture or treatment of multistable switching devices
- H10N70/061—Patterning of the switching material
- H10N70/063—Patterning of the switching material by etching of pre-deposited switching material layers, e.g. lithography
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/20—Multistable switching devices, e.g. memristors
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/821—Device geometry
- H10N70/826—Device geometry adapted for essentially vertical current flow, e.g. sandwich or pillar type devices
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/881—Switching materials
- H10N70/883—Oxides or nitrides
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N99/00—Subject matter not provided for in other groups of this subclass
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2213/00—Indexing scheme relating to G11C13/00 for features not covered by this group
- G11C2213/50—Resistive cell structure aspects
- G11C2213/52—Structure characterized by the electrode material, shape, etc.
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2213/00—Indexing scheme relating to G11C13/00 for features not covered by this group
- G11C2213/70—Resistive array aspects
- G11C2213/79—Array wherein the access device being a transistor
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- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49082—Resistor making
Description
2,12 可変抵抗体
3,13 第1電極
14 層間絶縁膜
15 コンタクトホール
16 メタル配線
21 可変抵抗素子
22 パルスジェネレータ
23 デジタルオシロスコープ
24 パラメータアナライザ
25 切替スイッチ
30 本発明に係る記憶装置
31 メモリセルアレイ
32 制御回路
33 読み出し回路
34 ビット線デコーダ
35 ワード線デコーダ
36 電圧パルス発生回路
W1,W2,・・・,Wn,Wx,Wy ワード線
B1,B2,・・・,Bm,Bx,By ビット線
S ソース線
R 可変抵抗素子
T 選択トランジスタ
101 半導体基板
102 素子分離領域
103 ゲート絶縁膜
104 ゲート電極
105 ドレイン拡散層領域
106 ソース拡散層領域
107 第1層間絶縁膜
108,114,115 コンタクトホール
109 バリア層
110 下部電極
111 可変抵抗体
112 上部電極
113 第2層間絶縁膜
116,117 第1配線
118 第3層間絶縁膜
119 第2配線
120 表面保護膜
Claims (7)
- 第1電極と第2電極と可変抵抗体とを備え、前記可変抵抗体が前記第1電極と前記第2電極とに挟持された領域に存し、前記第1の電極と前記第2の電極間に電圧パルスを印加することにより、前記第1電極と前記第2電極間の電気抵抗が変化する可変抵抗素子において、
前記可変抵抗体が遷移金属元素の酸窒化物であり、前記第1電極と前記可変抵抗体とが接触或いは対向する領域の面積、若しくは前記第2電極と前記可変抵抗体とが接触或いは対向する領域の面積のうち小さい方の面積が、0.06μm 2 以下であることを特徴とする可変抵抗素子。 - 前記可変抵抗体が、チタン、ニッケル、バナジウム、ジルコニウム、タングステン、コバルト、亜鉛の中から選択される元素の酸窒化物であることを特徴とする請求項1に記載の可変抵抗素子。
- 前記第2電極が、酸窒化物である前記可変抵抗体を構成する遷移金属と同元素を含んで成る導電性窒化物であることを特徴とする請求項1から請求項2の何れか1項に記載の可変抵抗素子。
- 前記第2電極が、チタン、ニッケル、バナジウム、ジルコニウム、タングステン、コバルト、亜鉛の中から選択される元素の導電性窒化物であることを特徴とする請求項3に記載の可変抵抗素子。
- 請求項1から請求項4の何れか1項に記載の可変抵抗素子の製造方法であって、
遷移金属の導電性窒化物からなる前記第2電極を形成する工程と、
前記第2電極の表面を酸化することにより遷移金属元素の酸窒化物からなる前記可変抵抗体を形成する工程と、
前記第1電極を形成する工程と、を有し、
前記第1電極と前記可変抵抗体とが接触或いは対向する領域の面積、若しくは前記第2電極と前記可変抵抗体とが接触或いは対向する領域の面積のうち小さい方の面積を、0.06μm 2 以下とすることを特徴とする可変抵抗素子の製造方法。 - 前記第2電極が、チタン、ニッケル、バナジウム、ジルコニウム、タングステン、コバルト、亜鉛の中から選択される元素の導電性窒化物であることを特徴とする請求項5に記載の可変抵抗素子の製造方法。
- 第1電極と第2電極と可変抵抗体とを有し、前記可変抵抗体が前記第1電極と前記第2電極とに挟持された領域に存し、前記第1の電極と前記第2の電極間に電圧パルスを印加することにより、前記第1電極と前記第2電極間の電気抵抗が変化する可変抵抗素子を備えた記憶装置であって、
前記可変抵抗体が遷移金属元素の酸窒化物であり、前記第1電極と前記可変抵抗体とが接触或いは対向する領域の面積、若しくは前記第2電極と前記可変抵抗体とが接触或いは対向する領域の面積のうち小さい方の面積が、0.06μm 2 以下であることを特徴とする可変抵抗素子を備えた記憶装置。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005228600A JP3889023B2 (ja) | 2005-08-05 | 2005-08-05 | 可変抵抗素子とその製造方法並びにそれを備えた記憶装置 |
TW095126239A TW200710845A (en) | 2005-08-05 | 2006-07-18 | Variable resistor element and production method therefor and storage device provided with it |
US11/997,184 US7884699B2 (en) | 2005-08-05 | 2006-07-21 | Variable resistor element, manufacturing method thereof, and memory device provided with it |
EP06781409.5A EP1914806B1 (en) | 2005-08-05 | 2006-07-21 | Variable resistor element and production method therefor and storage device provided with it |
KR1020087004154A KR100966063B1 (ko) | 2005-08-05 | 2006-07-21 | 가변 저항 소자와 그 제조 방법, 그리고 가변 저항 소자를구비한 기억 장치 |
PCT/JP2006/314487 WO2007018026A1 (ja) | 2005-08-05 | 2006-07-21 | 可変抵抗素子とその製造方法並びにそれを備えた記憶装置 |
CN200680029245A CN100580930C (zh) | 2005-08-05 | 2006-07-21 | 可变电阻元件和其制造方法以及具备其的存储装置 |
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JP2005228600A JP3889023B2 (ja) | 2005-08-05 | 2005-08-05 | 可変抵抗素子とその製造方法並びにそれを備えた記憶装置 |
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JP2007048779A JP2007048779A (ja) | 2007-02-22 |
JP3889023B2 true JP3889023B2 (ja) | 2007-03-07 |
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US (1) | US7884699B2 (ja) |
EP (1) | EP1914806B1 (ja) |
JP (1) | JP3889023B2 (ja) |
KR (1) | KR100966063B1 (ja) |
CN (1) | CN100580930C (ja) |
TW (1) | TW200710845A (ja) |
WO (1) | WO2007018026A1 (ja) |
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2005
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- 2006-07-21 KR KR1020087004154A patent/KR100966063B1/ko not_active IP Right Cessation
- 2006-07-21 WO PCT/JP2006/314487 patent/WO2007018026A1/ja active Application Filing
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9373664B2 (en) | 2014-07-28 | 2016-06-21 | Samsung Electronics Co., Ltd. | Variable resistance memory devices and methods of manufacturing the same |
Also Published As
Publication number | Publication date |
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WO2007018026A1 (ja) | 2007-02-15 |
CN101238582A (zh) | 2008-08-06 |
KR100966063B1 (ko) | 2010-06-28 |
TWI299865B (ja) | 2008-08-11 |
EP1914806B1 (en) | 2013-09-25 |
EP1914806A4 (en) | 2012-06-20 |
JP2007048779A (ja) | 2007-02-22 |
CN100580930C (zh) | 2010-01-13 |
US7884699B2 (en) | 2011-02-08 |
US20100085142A1 (en) | 2010-04-08 |
TW200710845A (en) | 2007-03-16 |
EP1914806A1 (en) | 2008-04-23 |
KR20080028501A (ko) | 2008-03-31 |
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