JP2011258971A - 抵抗可変メモリ・ディバイスおよび製造方法 - Google Patents
抵抗可変メモリ・ディバイスおよび製造方法 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title abstract description 3
- 239000005387 chalcogenide glass Substances 0.000 claims abstract description 104
- 238000000034 method Methods 0.000 claims abstract description 40
- MFIWAIVSOUGHLI-UHFFFAOYSA-N selenium;tin Chemical compound [Sn]=[Se] MFIWAIVSOUGHLI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000011669 selenium Substances 0.000 claims description 42
- 229910052709 silver Inorganic materials 0.000 claims description 37
- 239000004332 silver Substances 0.000 claims description 35
- 229910052751 metal Inorganic materials 0.000 claims description 32
- 239000002184 metal Substances 0.000 claims description 32
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 31
- 239000000758 substrate Substances 0.000 claims description 28
- 239000000956 alloy Substances 0.000 claims description 27
- 229910045601 alloy Inorganic materials 0.000 claims description 27
- 229910052718 tin Inorganic materials 0.000 claims description 13
- 229910052711 selenium Inorganic materials 0.000 claims description 11
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 11
- 229910052721 tungsten Inorganic materials 0.000 claims description 11
- 239000010937 tungsten Substances 0.000 claims description 11
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 10
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims description 9
- QIHHYQWNYKOHEV-UHFFFAOYSA-N 4-tert-butyl-3-nitrobenzoic acid Chemical compound CC(C)(C)C1=CC=C(C(O)=O)C=C1[N+]([O-])=O QIHHYQWNYKOHEV-UHFFFAOYSA-N 0.000 claims description 7
- 230000003750 conditioning effect Effects 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 3
- 229910001887 tin oxide Inorganic materials 0.000 claims description 3
- QUZPNFFHZPRKJD-UHFFFAOYSA-N germane Chemical compound [GeH4] QUZPNFFHZPRKJD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052986 germanium hydride Inorganic materials 0.000 claims description 2
- 238000005054 agglomeration Methods 0.000 abstract description 5
- 230000002776 aggregation Effects 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 209
- 239000000463 material Substances 0.000 description 31
- 239000004065 semiconductor Substances 0.000 description 12
- 239000004020 conductor Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000005755 formation reaction Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 150000004770 chalcogenides Chemical class 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 238000000137 annealing Methods 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- KDSXXMBJKHQCAA-UHFFFAOYSA-N disilver;selenium(2-) Chemical compound [Se-2].[Ag+].[Ag+] KDSXXMBJKHQCAA-UHFFFAOYSA-N 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- -1 silver ions Chemical class 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 229910052714 tellurium Inorganic materials 0.000 description 3
- 229910001316 Ag alloy Inorganic materials 0.000 description 2
- 229910001128 Sn alloy Inorganic materials 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052798 chalcogen Inorganic materials 0.000 description 2
- 150000001787 chalcogens Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 229910052699 polonium Inorganic materials 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- GNWCVDGUVZRYLC-UHFFFAOYSA-N [Se].[Ag].[Ag] Chemical compound [Se].[Ag].[Ag] GNWCVDGUVZRYLC-UHFFFAOYSA-N 0.000 description 1
- 229910052946 acanthite Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010549 co-Evaporation Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 231100001231 less toxic Toxicity 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- HZEBHPIOVYHPMT-UHFFFAOYSA-N polonium atom Chemical compound [Po] HZEBHPIOVYHPMT-UHFFFAOYSA-N 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 150000003378 silver Chemical class 0.000 description 1
- XUARKZBEFFVFRG-UHFFFAOYSA-N silver sulfide Chemical compound [S-2].[Ag+].[Ag+] XUARKZBEFFVFRG-UHFFFAOYSA-N 0.000 description 1
- 229940056910 silver sulfide Drugs 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- UQMCSSLUTFUDSN-UHFFFAOYSA-N sulfanylidenegermane Chemical compound [GeH2]=S UQMCSSLUTFUDSN-UHFFFAOYSA-N 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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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
- 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
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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
- G11C13/0009—RRAM elements whose operation depends upon chemical change
- G11C13/0011—RRAM elements whose operation depends upon chemical change comprising conductive bridging RAM [CBRAM] or programming metallization cells [PMCs]
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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
- H10N70/011—Manufacture or treatment of multistable switching devices
- H10N70/061—Shaping switching materials
- H10N70/063—Shaping switching materials 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 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
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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
- H10N70/801—Constructional details of multistable switching devices
- H10N70/881—Switching materials
- H10N70/882—Compounds of sulfur, selenium or tellurium, e.g. chalcogenides
- H10N70/8825—Selenides, e.g. GeSe
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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
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- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S438/00—Semiconductor device manufacturing: process
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Abstract
【解決手段】第1の電極16と、第2の電極24と、前記第1の電極16と前記第2の電極24との間のカルコゲナイド・ガラス層18と、前記カルコゲナイド・ガラス層18と前記第2の電極24との間の錫−カルコゲナイド層20とを備え、少なくとも1つの錫−カルコゲナイド層20と少なくとも1つのカルコゲナイド・ガラス層18とが近接し,前記錫−カルコゲナイド層20がセレン化錫を含む抵抗可変メモリ・ディバイス100、および、抵抗可変メモリ・ディバイス100の形成方法。
【選択図】図1
Description
Claims (22)
- 第1の電極と,
第2の電極と,
前記第1の電極と前記第2の電極との間のカルコゲナイド・ガラス層と,
前記カルコゲナイド・ガラス層と前記第2の電極との間の錫−カルコゲナイド層とを備え,
前記錫−カルコゲナイド層がセレン化錫を含む,
抵抗可変メモリ・ディバイス。 - 合金制御層をさらに備える請求項1に記載の抵抗可変メモリ・ディバイス。
- 前記合金制御層がセレンを含む請求項2に記載の抵抗可変メモリ・ディバイス。
- 前記合金制御層が酸化錫を含む請求項2に記載の抵抗可変メモリ・ディバイス。
- 前記合金制御層が前記錫−カルコゲナイド層の上にある請求項2に記載の抵抗可変メモリ・ディバイス。
- 約260℃で約5分間のアニールに耐え,その後にメモリ・ディバイスとして動作することが可能な,請求項1に記載の抵抗可変メモリ・ディバイス。
- 前記第2の電極が前記メモリ・ディバイスの基板上の位置を定める請求項1に記載の抵抗可変メモリ・ディバイス。
- 前記カルコゲナイド・ガラス層が導電チャネルをその内部に有する請求項1に記載の抵抗可変メモリ・ディバイス。
- 前記メモリ・ディバイスを低抵抗メモリ状態にプログラムするために,前記カルコゲナイド・ガラス層内に導電路が形成されうる,請求項1に記載の抵抗可変メモリ・ディバイス。
- 前記導電路が錫および銀のうちの少なくともいずれか一方を含む請求項9に記載の抵抗可変メモリ・ディバイス。
- 前記錫−カルコゲナイド層がSn1+/-xSeを含み,ここでxは約1と約0の間である,請求項1に記載のメモリ・ディバイス。
- 基板と,
前記基板の上の導電アドレス線と,
前記導電アドレス線の上の第1の電極と,
前記第1の電極の上の第1のカルコゲナイド・ガラス層である前記カルコゲナイド・ガラス層と,
前記第1のカルコゲナイド・ガラス層の上の前記錫−カルコゲナイド層と,
前記錫−カルコゲナイド層の上の第2のカルコゲナイド・ガラス層と,
前記第2のカルコゲナイド・ガラス層の上の銀層と,
前記銀層の上の第3のカルコゲナイド・ガラス層と,
前記第3のカルコゲナイド・ガラス層の上の第2の電極とを備え,
前記第1の電極がタングステンを含み,前記第1のカルコゲナイド・ガラス層がセレン化ゲルマニウムを含み,前記第2のカルコゲナイド・ガラス層がセレン化ゲルマニウムを含み,前記第3のカルコゲナイド・ガラス層がセレン化ゲルマニウムを含み,前記第2の電極がタングステンおよび錫のうちのいずれか一方を含む,請求項1に記載の抵抗可変メモリ・ディバイス。 - プロセッサと,
請求項1から12のいずれか一項に記載の抵抗可変メモリ・ディバイスとを備える,
プロセッサ・システム。 - 抵抗可変メモリ・ディバイスの形成方法であって,
基板を準備し,
前記基板の上に第1の電極を設け,
前記基板の上に第2の電極を設け,
前記第1の電極と前記第2の電極との間に第1のカルコゲナイド・ガラス層を形成し,そして
前記第1のカルコゲナイド・ガラス層と前記第2の電極との間に錫−カルコゲナイド層を形成し,前記錫−カルコゲナイド層がセレン化錫を含む,
方法。 - 前記セレン化錫の化学量論的組成がSn1+/-xSeであり,xの範囲が約1から約0である,請求項14に記載の方法。
- コンディショニング・ステップにより,前記第1のカルコゲナイド・ガラス層内に導電チャネルを形成する請求項14に記載の方法。
- 前記コンディショニング・ステップが,前記第1のカルコゲナイド・ガラス層および前記錫−カルコゲナイド層を横切って電圧パルスを印加することを含む,請求項16に記載の方法。
- 前記基板の上に導電アドレス線を形成し,
前記アドレス線および前記基板の上に第1の絶縁層を形成し,
前記第1の絶縁層に開口部を形成し,前記開口部において前記アドレス線の一部を露出させ,
前記アドレス線の上の前記開口部内に第1の電極層を形成し,
前記第1の電極の上に第1のカルコゲナイド・ガラス層を形成し,
前記第1のカルコゲナイド・ガラス層の上に錫−カルコゲナイド層を形成し,
前記錫−カルコゲナイド層の上に第2のカルコゲナイド・ガラス層を形成し,
前記第2のカルコゲナイド・ガラス層の上に金属層を形成し,
前記金属層の上に第3のカルコゲナイド・ガラス層を形成し,
前記第3のカルコゲナイド・ガラス層の上に前記第2の電極層を形成し,
前記第1の電極層の上に,前記第1のカルコゲナイド・ガラス層,前記錫−カルコゲナイド層,前記第2のカルコゲナイド・ガラス層,前記金属層,前記第3のカルコゲナイド・ガラス層および前記第2の電極層によるスタックをエッチングにより形成し,
前記錫−カルコゲナイド層がSn1+/-xSeを含み,ここでxの範囲は約1から約0の間である,
請求項14に記載の方法。 - 合金制御層をさらに設ける請求項14または18に記載の方法。
- 前記合金制御層がセレンを含む請求項19に記載の方法。
- 前記合金制御層が酸化錫を含む請求項19に記載の方法。
- 前記合金制御層が前記錫−カルコゲナイド層の上にある請求項19に記載の方法。
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US10/893,299 US7190048B2 (en) | 2004-07-19 | 2004-07-19 | Resistance variable memory device and method of fabrication |
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US (4) | US7190048B2 (ja) |
EP (1) | EP1769507B1 (ja) |
JP (2) | JP5107037B2 (ja) |
KR (1) | KR100917095B1 (ja) |
CN (1) | CN100530432C (ja) |
AT (1) | ATE450042T1 (ja) |
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US20060289851A1 (en) | 2006-12-28 |
EP1769507B1 (en) | 2009-11-25 |
CN100530432C (zh) | 2009-08-19 |
US7282783B2 (en) | 2007-10-16 |
US7348209B2 (en) | 2008-03-25 |
JP2008507151A (ja) | 2008-03-06 |
JP5364762B2 (ja) | 2013-12-11 |
EP1769507A1 (en) | 2007-04-04 |
TWI293509B (en) | 2008-02-11 |
KR20070034116A (ko) | 2007-03-27 |
US7868310B2 (en) | 2011-01-11 |
KR100917095B1 (ko) | 2009-09-15 |
CN101019191A (zh) | 2007-08-15 |
DE602005017899D1 (de) | 2010-01-07 |
TW200620649A (en) | 2006-06-16 |
JP5107037B2 (ja) | 2012-12-26 |
US20060012008A1 (en) | 2006-01-19 |
US20080164456A1 (en) | 2008-07-10 |
WO2006019845A1 (en) | 2006-02-23 |
US7190048B2 (en) | 2007-03-13 |
ATE450042T1 (de) | 2009-12-15 |
US20070138598A1 (en) | 2007-06-21 |
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