JP5730869B2 - 活性イオン界面領域を備えた不揮発性メモリ - Google Patents
活性イオン界面領域を備えた不揮発性メモリ Download PDFInfo
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- JP5730869B2 JP5730869B2 JP2012520686A JP2012520686A JP5730869B2 JP 5730869 B2 JP5730869 B2 JP 5730869B2 JP 2012520686 A JP2012520686 A JP 2012520686A JP 2012520686 A JP2012520686 A JP 2012520686A JP 5730869 B2 JP5730869 B2 JP 5730869B2
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- 230000004888 barrier function Effects 0.000 claims description 44
- 229910052751 metal Inorganic materials 0.000 claims description 32
- 239000002184 metal Substances 0.000 claims description 32
- 150000002500 ions Chemical class 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- -1 oxygen ions Chemical class 0.000 claims description 14
- 229910021645 metal ion Inorganic materials 0.000 claims description 12
- 238000013500 data storage Methods 0.000 claims description 9
- 239000007784 solid electrolyte Substances 0.000 claims description 8
- 229910044991 metal oxide Inorganic materials 0.000 claims description 4
- 150000004706 metal oxides Chemical class 0.000 claims description 4
- 238000001465 metallisation Methods 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 230000005012 migration Effects 0.000 description 6
- 238000013508 migration Methods 0.000 description 6
- 230000002441 reversible effect Effects 0.000 description 4
- 238000003491 array Methods 0.000 description 3
- 239000011575 calcium Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003870 refractory metal Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910001233 yttria-stabilized zirconia Inorganic materials 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 150000004772 tellurides Chemical class 0.000 description 1
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- G11C13/02—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using elements whose operation depends upon chemical change
-
- 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
-
- 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 having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/20—Multistable switching devices, e.g. memristors
-
- 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 having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/20—Multistable switching devices, e.g. memristors
- H10N70/24—Multistable switching devices, e.g. memristors based on migration or redistribution of ionic species, e.g. anions, vacancies
-
- 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 having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/20—Multistable switching devices, e.g. memristors
- H10N70/24—Multistable switching devices, e.g. memristors based on migration or redistribution of ionic species, e.g. anions, vacancies
- H10N70/245—Multistable switching devices, e.g. memristors based on migration or redistribution of ionic species, e.g. anions, vacancies the species being metal cations, e.g. programmable metallization cells
-
- 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 having no potential barriers, 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
-
- 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 having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/841—Electrodes
- H10N70/8416—Electrodes adapted for supplying ionic species
-
- 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 having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/881—Switching materials
- H10N70/882—Compounds of sulfur, selenium or tellurium, e.g. chalcogenides
- H10N70/8822—Sulfides, e.g. CuS
-
- 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 having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/881—Switching materials
- H10N70/882—Compounds of sulfur, selenium or tellurium, e.g. chalcogenides
- H10N70/8828—Tellurides, e.g. GeSbTe
-
- 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 having no potential barriers, 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
- H10N70/8833—Binary metal oxides, e.g. TaOx
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2213/00—Indexing scheme relating to G11C13/00 for features not covered by this group
- G11C2213/30—Resistive cell, memory material aspects
- G11C2213/31—Material having complex metal oxide, e.g. perovskite structure
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2213/00—Indexing scheme relating to G11C13/00 for features not covered by this group
- G11C2213/30—Resistive cell, memory material aspects
- G11C2213/34—Material includes an oxide or a nitride
-
- 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
- G11C2213/54—Structure including a tunneling barrier layer, the memory effect implying the modification of tunnel barrier conductivity
-
- 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
- G11C2213/55—Structure including two electrodes, a memory active layer and at least two other layers which can be a passive or source or reservoir layer or a less doped memory active layer
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Semiconductor Memories (AREA)
Description
一般的にデータ記憶装置は、データを速く効率的に記憶および読み出すように動作する。記憶装置の中には、固体メモリセルの半導体アレイを利用してデータの個々のビットを記憶するものもある。そのようなメモリセルは、揮発性(たとえば、DRAM、SRAM)または不揮発性(RRAM(登録商標)、STRAM、フラッシュなど)であり得る。
本発明のさまざまな実施例は、一般的に、プログラム可能なメタライゼーションセル(PMC:Programmable Metallization Cell)構造を有するメモリセルなどの、しかしこれに限定されない不揮発性メモリセルおよびその使用方法に関する。
図1は、この発明のさまざまな実施例に従って構築され動作されるデータ記憶装置100の機能ブロック図である。データ記憶装置は、PCMCIAカードまたはUSB式外部メモリ装置などの可搬性の不揮発性メモリ記憶装置を含むものとして企図される。しかしながら、装置100のそのような特徴付けは、特定の実施例を例示するためのものに過ぎず、特許請求の主題を限定するものではないことが理解されるであろう。
Claims (13)
- 導電領域と金属領域との間に配置されたトンネル領域を備えた不揮発性メモリセルであって、前記トンネル領域は、第1のトンネル障壁と第2のトンネル障壁との間に配置された活性界面領域を含み、前記メモリセルを選択された抵抗状態へとプログラムする書込電流の印加に応じた前記金属領域と前記導電領域との両方からのイオンの移動とともに高抵抗性膜が前記活性界面領域に隣接して形成される、メモリセル。
- 金属イオンのみが前記第1のトンネル障壁を通過し、酸素イオンのみが前記第2のトンネル障壁を通過する、請求項1に記載のメモリセル。
- 不揮発性メモリセルであって、
導電領域と金属領域との間に配置されたトンネル領域を備え、前記トンネル領域は、第1のトンネル障壁と第2のトンネル障壁との間に配置された活性界面領域を含み、
活性界面領域に隣接してかつ前記第1および第2のトンネル障壁の中に生成する金属酸化物を有する高抵抗性膜が、前記メモリセルを選択された抵抗状態へとプログラムする書込電流の印加に応じて、前記活性界面領域に隣接して形成される、不揮発性メモリセル。 - 前記トンネル領域は、プログラム可能なメタライゼーションセル(PMC)を含み、前記PMCでは、第1のトンネル障壁は、金属イオンを伝導する固体電解質材料を含み、第2のトンネル障壁は、酸素イオンを伝導する固体電解質材料を含む、請求項1から3のいずれか1項に記載のメモリセル。
- 前記第1および第2のトンネル障壁は、前記活性界面領域と同じ材料を含む、請求項1から4のいずれか1項に記載のメモリセル。
- 前記高抵抗性膜は、前記書込電流として第1の方向の第1の電流を前記トンネル領域を通過させることによって形成され、前記高抵抗性膜は、第2の方向の第2の電流を前記トンネル領域を通過させることによって完全に消散される、請求項1から5のいずれか1項に記載のメモリセル。
- 導電領域と金属領域との間に配置されたトンネル領域を含む不揮発性メモリセルを用意するステップを備えた方法であって、前記トンネル領域は、第1のトンネル障壁と第2のトンネル障壁との間に配置された活性界面領域を含み、前記方法は、前記メモリセルを選択された抵抗状態へとプログラムする書込電流を印加することによる前記金属領域と前記導電領域との両方からのイオンの移動とともに高抵抗性膜を前記活性界面領域に隣接して形成するステップをさらに備える、方法。
- 金属イオンのみが前記第1のトンネル障壁を通過し、酸素イオンのみが前記第2のトンネル障壁を通過する、請求項7に記載の方法。
- 導電領域と金属領域との間に配置されたトンネル領域を含む不揮発性メモリセルを用意するステップを備えた方法であって、
前記トンネル領域は、第1のトンネル障壁と第2のトンネル障壁との間に配置された活性界面領域を含み、前記方法は、書込電流を印加して、前記メモリセルを選択された抵抗状態へとプログラムすることによって、活性界面領域に隣接してかつ前記第1および第2のトンネル障壁の中に生成する金属酸化物を有する高抵抗性膜を形成するステップを備える、方法。 - 前記トンネル領域は、プログラム可能なメタライゼーションセル(PMC)を含み、前記PMCでは、第1のトンネル障壁は、金属イオンを伝導する固体電解質材料を含み、第2のトンネル障壁は、酸素イオンを伝導する固体電解質材料を含む、請求項7から9のいずれか1項に記載の方法。
- 前記第1および第2のトンネル障壁は、前記活性界面領域と同じ材料を含む、請求項7から10のいずれか1項に記載の方法。
- 前記高抵抗性膜は、前記書込電流として第1の方向の第1の電流を前記トンネル領域を通過させることによって形成され、前記高抵抗性膜は、第2の方向の第2の電流を前記トンネル領域を通過させることによって完全に消散される、請求項7から11のいずれか1項に記載の方法。
- 請求項1に記載のメモリセルを含むアレイと、
コントローラと、
前記アレイと前記コントローラとの間の通信のためのインターフェイス回路とを備える、データ記憶装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/501,689 US8421048B2 (en) | 2009-07-13 | 2009-07-13 | Non-volatile memory with active ionic interface region |
US12/501,689 | 2009-07-13 | ||
PCT/US2010/041554 WO2011008653A1 (en) | 2009-07-13 | 2010-07-09 | Non-volatile memory with active ionic interface region |
Publications (3)
Publication Number | Publication Date |
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JP2012533194A JP2012533194A (ja) | 2012-12-20 |
JP2012533194A5 JP2012533194A5 (ja) | 2013-04-18 |
JP5730869B2 true JP5730869B2 (ja) | 2015-06-10 |
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Family Applications (1)
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JP2012520686A Expired - Fee Related JP5730869B2 (ja) | 2009-07-13 | 2010-07-09 | 活性イオン界面領域を備えた不揮発性メモリ |
Country Status (5)
Country | Link |
---|---|
US (1) | US8421048B2 (ja) |
JP (1) | JP5730869B2 (ja) |
KR (1) | KR101323779B1 (ja) |
CN (1) | CN102473455B (ja) |
WO (1) | WO2011008653A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102008024078A1 (de) * | 2008-05-17 | 2009-12-17 | Forschungszentrum Jülich GmbH | Speicher sowie Verfahren zum Schreiben und Auslesen von Information in einem Speicher |
US8780607B2 (en) | 2011-09-16 | 2014-07-15 | Micron Technology, Inc. | Select devices for memory cell applications |
US9349445B2 (en) | 2011-09-16 | 2016-05-24 | Micron Technology, Inc. | Select devices for memory cell applications |
US9142767B2 (en) | 2011-09-16 | 2015-09-22 | Micron Technology, Inc. | Resistive memory cell including integrated select device and storage element |
US9112138B2 (en) | 2012-06-14 | 2015-08-18 | Micron Technology, Inc. | Methods of forming resistive memory elements |
US9178143B2 (en) * | 2013-07-29 | 2015-11-03 | Industrial Technology Research Institute | Resistive memory structure |
US10840431B2 (en) | 2016-03-31 | 2020-11-17 | Intel Corporation | Multilayer selector device with low holding voltage |
WO2017171821A1 (en) * | 2016-03-31 | 2017-10-05 | Intel Corporation | Programmable metallization cell with alloy layer |
KR20220099061A (ko) | 2021-01-05 | 2022-07-12 | 에스케이하이닉스 주식회사 | 반도체 장치 및 반도체 장치의 동작 방법 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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US6204139B1 (en) * | 1998-08-25 | 2001-03-20 | University Of Houston | Method for switching the properties of perovskite materials used in thin film resistors |
US7538338B2 (en) * | 2004-09-03 | 2009-05-26 | Unity Semiconductor Corporation | Memory using variable tunnel barrier widths |
US20060171200A1 (en) | 2004-02-06 | 2006-08-03 | Unity Semiconductor Corporation | Memory using mixed valence conductive oxides |
JP5502320B2 (ja) * | 2006-03-30 | 2014-05-28 | 日本電気株式会社 | スイッチング素子およびスイッチング素子の製造方法 |
US8766224B2 (en) * | 2006-10-03 | 2014-07-01 | Hewlett-Packard Development Company, L.P. | Electrically actuated switch |
JP5092355B2 (ja) * | 2006-10-31 | 2012-12-05 | ソニー株式会社 | 記憶装置 |
US7619917B2 (en) * | 2006-11-28 | 2009-11-17 | Qimonda North America Corp. | Memory cell with trigger element |
DE102008024078A1 (de) * | 2008-05-17 | 2009-12-17 | Forschungszentrum Jülich GmbH | Speicher sowie Verfahren zum Schreiben und Auslesen von Information in einem Speicher |
-
2009
- 2009-07-13 US US12/501,689 patent/US8421048B2/en active Active
-
2010
- 2010-07-09 JP JP2012520686A patent/JP5730869B2/ja not_active Expired - Fee Related
- 2010-07-09 CN CN201080032408.7A patent/CN102473455B/zh not_active Expired - Fee Related
- 2010-07-09 WO PCT/US2010/041554 patent/WO2011008653A1/en active Application Filing
- 2010-07-09 KR KR1020127003814A patent/KR101323779B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN102473455A (zh) | 2012-05-23 |
KR20120037482A (ko) | 2012-04-19 |
US8421048B2 (en) | 2013-04-16 |
CN102473455B (zh) | 2015-10-14 |
JP2012533194A (ja) | 2012-12-20 |
US20110007544A1 (en) | 2011-01-13 |
KR101323779B1 (ko) | 2013-10-31 |
WO2011008653A1 (en) | 2011-01-20 |
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