JP2012523119A - 抵抗メモリのコントロールされた局在的欠陥パス - Google Patents
抵抗メモリのコントロールされた局在的欠陥パス Download PDFInfo
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- JP2012523119A JP2012523119A JP2012503631A JP2012503631A JP2012523119A JP 2012523119 A JP2012523119 A JP 2012523119A JP 2012503631 A JP2012503631 A JP 2012503631A JP 2012503631 A JP2012503631 A JP 2012503631A JP 2012523119 A JP2012523119 A JP 2012523119A
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- Prior art keywords
- oxide
- electrode
- metal
- metal oxide
- memory component
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- 230000007547 defect Effects 0.000 title claims abstract description 97
- 230000015654 memory Effects 0.000 title claims description 229
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 162
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 162
- 238000000034 method Methods 0.000 claims abstract description 40
- 230000000873 masking effect Effects 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 73
- 229910000449 hafnium oxide Inorganic materials 0.000 claims description 55
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical group [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 claims description 55
- 230000006870 function Effects 0.000 claims description 41
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 32
- 229910052751 metal Inorganic materials 0.000 claims description 31
- 239000002184 metal Substances 0.000 claims description 31
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 29
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 29
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 29
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 28
- 150000002500 ions Chemical class 0.000 claims description 28
- 229910021332 silicide Inorganic materials 0.000 claims description 24
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 22
- 229910052710 silicon Inorganic materials 0.000 claims description 22
- 239000010703 silicon Substances 0.000 claims description 22
- 230000035515 penetration Effects 0.000 claims description 21
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims description 20
- 229910052760 oxygen Inorganic materials 0.000 claims description 19
- 239000001301 oxygen Substances 0.000 claims description 19
- 229910052721 tungsten Inorganic materials 0.000 claims description 17
- 239000010937 tungsten Substances 0.000 claims description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 16
- 229910052697 platinum Inorganic materials 0.000 claims description 16
- 238000000151 deposition Methods 0.000 claims description 15
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 14
- 238000000137 annealing Methods 0.000 claims description 14
- -1 halogen ions Chemical class 0.000 claims description 14
- 229910052707 ruthenium Inorganic materials 0.000 claims description 14
- HTXDPTMKBJXEOW-UHFFFAOYSA-N dioxoiridium Chemical compound O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 claims description 13
- 229910052741 iridium Inorganic materials 0.000 claims description 13
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 13
- 229910000457 iridium oxide Inorganic materials 0.000 claims description 13
- 229910001925 ruthenium oxide Inorganic materials 0.000 claims description 13
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 claims description 13
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 claims description 13
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 12
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- 229920005591 polysilicon Polymers 0.000 claims description 12
- 238000005468 ion implantation Methods 0.000 claims description 11
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- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 11
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 11
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- 229920002120 photoresistant polymer Polymers 0.000 claims description 10
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 9
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 8
- 229910000476 molybdenum oxide Inorganic materials 0.000 claims description 7
- 229910000484 niobium oxide Inorganic materials 0.000 claims description 7
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims description 7
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 claims description 7
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 claims description 7
- 229910001936 tantalum oxide Inorganic materials 0.000 claims description 7
- ZXEYZECDXFPJRJ-UHFFFAOYSA-N $l^{3}-silane;platinum Chemical compound [SiH3].[Pt] ZXEYZECDXFPJRJ-UHFFFAOYSA-N 0.000 claims description 6
- GPBUGPUPKAGMDK-UHFFFAOYSA-N azanylidynemolybdenum Chemical compound [Mo]#N GPBUGPUPKAGMDK-UHFFFAOYSA-N 0.000 claims description 6
- 229910017052 cobalt Inorganic materials 0.000 claims description 6
- 239000010941 cobalt Substances 0.000 claims description 6
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- RUFLMLWJRZAWLJ-UHFFFAOYSA-N nickel silicide Chemical compound [Ni]=[Si]=[Ni] RUFLMLWJRZAWLJ-UHFFFAOYSA-N 0.000 claims description 6
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- KUVFGOLWQIXGBP-UHFFFAOYSA-N hafnium(4+);oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[Ti+4].[Hf+4] KUVFGOLWQIXGBP-UHFFFAOYSA-N 0.000 claims description 2
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- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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 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
-
- 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
- H10N70/801—Constructional details of multistable switching devices
- H10N70/821—Device geometry
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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 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
- H01L21/26—Bombardment with radiation
- H01L21/263—Bombardment with radiation with high-energy radiation
- H01L21/265—Bombardment with radiation with high-energy radiation producing ion implantation
-
- 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
- H01L21/322—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to modify their internal properties, e.g. to produce internal imperfections
-
- 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
- H10N70/011—Manufacture or treatment of multistable switching devices
- H10N70/021—Formation of switching materials, e.g. deposition of layers
- H10N70/023—Formation of switching materials, e.g. deposition of layers by chemical vapor deposition, e.g. MOCVD, ALD
-
- 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
- H10N70/011—Manufacture or treatment of multistable switching devices
- H10N70/021—Formation of switching materials, e.g. deposition of layers
- H10N70/026—Formation of switching materials, e.g. deposition of layers by physical vapor deposition, e.g. sputtering
-
- 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
- H10N70/011—Manufacture or treatment of multistable switching devices
- H10N70/041—Modification of switching materials after formation, e.g. doping
-
- 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
- H10N70/011—Manufacture or treatment of multistable switching devices
- H10N70/041—Modification of switching materials after formation, e.g. doping
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Abstract
【選択図】図1
Description
I. メモリ構造
メモリアレイ100は、可能性があるメモリ構成の例であり、いくつかの他の構成が可能なことが理解される。
II. メモリ動作
A. 基本動作
B. 伝導メカニズム
III. 局在的欠陥パスを含むメモリ構成要素
セットおよびリセット電圧を下げ、オンオフ電流比を上げると信じられている。
IV. スイッチング材質特性
A. バルクを介在させたスイッチング
B. 欠陥
V. メモリ構成要素構造
A. 設計の検討
B. 材質
1. 金属酸化物
2. 電極
C. 酸化物の単一層
1. 浸透パス
2. 電流ステアリング構成要素
3. スイッチング極性
4. ハフニウム酸化物システム
5. 他の単一層メモリ構成要素
D. 酸化物スタック
1. 設計
i. ベース層
ii. ドーピング層
iii. 欠陥アクセス層
2. 構造の例
3. 材質システムの例
i. ハフニウム酸化物およびアルミニウム酸化物
ii. ハフニウム酸化物およびチタニウム酸化物
iii. アルミニウム酸化物およびチタニウム酸化物
iv.ドープされたシリコンの例
v.他の材質システム
Claims (20)
- 第1の電極を形成することと、
前記第1の電極の金属酸化物層を形成することと、
前記金属酸化物層の表面の露出部域および隠蔽部域を生成するために前記金属酸化物層をマスキングすることと、
前記金属酸化物層の前記露出部域を変化させ、かつ前記露出部域の下方の局在的欠陥パスを生成することと、を含む抵抗スイッチングメモリ構成要素を形成する方法。 - 前記変化させることが、前記金属酸化物層内へのイオンの注入を含む、請求項1に記載の方法。
- 前記イオンが、金属イオン、ハロゲンイオン、および酸素イオンからなる群から選択される、請求項2に記載の方法。
- 前記イオンの注入が、酸素空孔、金属侵入、および酸素侵入のうち少なくとも1つを含む欠陥の生成を含む、請求項2に記載の方法。
- 前記マスキングが、前記金属酸化物層の蒸着およびフォトレジストのパターニングを含む、請求項1に記載の方法。
- 前記金属酸化物層が、ハフニウム酸化物、チタニウム酸化物、アルミニウム酸化物、ジルコニウム酸化物、ニオブ酸化物、ハフニウムチタニウム酸化物、ハフニウムアルミニウム酸化物、ランタン酸化物、およびモリブデン酸化物からなる群から選択される、請求項1に記載の方法。
- 前記第1の電極の第1の作業機能が、前記第2の電極の第2の作業機能より小さい、請求項1に記載の方法。
- さらに、
前記金属酸化物層内の非金属浸透パスを生成するためセットパルスを印加することと、
前記非金属浸透パスを破壊するためリセットパルスを印加することと、を含む請求項7に記載の方法。 - 前記セットパルスの印加が前記第2の電極においてポジティブで、かつ前記リセットパルスが前記第2の電極においてネガティブである、請求項8に記載の方法。
- 前記第1の電極が、チタニウム窒化物、シリサイド、コバルトシリサイド、ニッケルシリサイド、パラジウムシリサイド、プラチナシリサイド、チタニウムシリサイド、タンタル窒化物、モリブデン窒化物、タングステン、タングステン窒化物、およびポリシリコンからなる群から選択され、
前記第2の電極が、プラチナ、ルテニウム、ルテニウム酸化物、イリジウム、イリジウム酸化物、チタニウム窒化物およびニッケルからなる群から選択される、請求項1に記載の方法。 - 第1の電極と、
4eVより大きいバンドギャップ、および金属酸化物層の局在的部域内に非金属欠陥パスを有する材質を含む前記第1の電極の上方の金属酸化物層と、
前記金属酸化物層の第2の電極と、を備える不揮発性抵抗スイッチングメモリ構成要素。 - 前記金属酸化物層が、ハフニウム酸化物、チタニウム酸化物、アルミニウム酸化物、ジルコニウム酸化物、ニオブ酸化物、ハフニウムアルミニウム酸化物、ランタン酸化物、およびモリブデン酸化物からなる群から選択される、請求項11に記載のメモリ構成要素。
- 前記第1の電極が、チタニウム窒化物、シリサイド、コバルトシリサイド、ニッケルシリサイド、パラジウムシリサイド、プラチナシリサイド、チタニウムシリサイド、タンタル窒化物、モリブデン窒化物、タングステン、タングステン窒化物、およびドープされたシリコンからなる群から選択され、
前記第2の電極が、プラチナ、ルテニウム、ルテニウム酸化物、イリジウム、イリジウム酸化物、チタニウム窒化物、およびニッケルからなる群から選択される、請求項11に記載のメモリ構成要素。 - 前記非金属浸透パスが、酸素空孔、金属侵入および酸素侵入のうち少なくとも1つを含む、請求項11に記載の方法。
- 第1の作業機能を有する第1の電極を形成することと、
4eVより大きいバンドギャップを有する、前記第1の電極の上方の金属酸化物層を形成することと、
前記金属酸化物層の表面内の露出部域および隠蔽部域を生成するために前記金属酸化物層をマスキングすることと、
前記金属酸化物層の前記露出部域を変化させ、かつ欠陥パスを生成することと、
前記欠陥パスから局在的チャネルを形成するために前記金属酸化物層をアニーリングすることと、
前記第1の作業機能と0.1〜1.0eVの間で異なる第2の作業機能を有する第2の電極を蒸着することと、を含む方法。 - 前記金属酸化物層が、ハフニウム酸化物、アルミニウム酸化物、タンタル酸化物、ジルコニウム酸化物、イットリウム酸化物、およびランタン酸化物からなる群から選択される、請求項15に記載の方法。
- 前記第1の電極がドープされたシリコンであり、前記第2の電極がチタニウム窒化物である、請求項15に記載の方法。
- 前記金属酸化物層のマスキングが、前記金属酸化物層のフォトレジストの蒸着を含む、請求項15に記載の方法。
- 前記欠陥パスが非金属浸透パスを含む、請求項15に記載の方法。
- 前記欠陥パスが、酸素空孔、金属侵入、金属置換および酸素侵入のうち少なくとも1つを含む、請求項19に記載の方法。
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WO2010117818A2 (en) | 2010-10-14 |
WO2010117818A3 (en) | 2011-01-13 |
JP5727996B2 (ja) | 2015-06-03 |
US8420478B2 (en) | 2013-04-16 |
US20100243983A1 (en) | 2010-09-30 |
US8872268B2 (en) | 2014-10-28 |
KR20120006018A (ko) | 2012-01-17 |
US20130207105A1 (en) | 2013-08-15 |
US20140138602A1 (en) | 2014-05-22 |
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