EP1668669A2 - Material und zellenaufbau für speicheranwendungen - Google Patents
Material und zellenaufbau für speicheranwendungenInfo
- Publication number
- EP1668669A2 EP1668669A2 EP04765710A EP04765710A EP1668669A2 EP 1668669 A2 EP1668669 A2 EP 1668669A2 EP 04765710 A EP04765710 A EP 04765710A EP 04765710 A EP04765710 A EP 04765710A EP 1668669 A2 EP1668669 A2 EP 1668669A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- aryl
- heteroaryl
- composition according
- composition
- memory cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000015654 memory Effects 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 title description 13
- 239000000203 mixture Substances 0.000 claims abstract description 37
- 238000004377 microelectronic Methods 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 24
- 229920000642 polymer Polymers 0.000 claims description 18
- 239000000178 monomer Substances 0.000 claims description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 239000002318 adhesion promoter Substances 0.000 claims description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 125000000217 alkyl group Chemical group 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 9
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 8
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- 229910052715 tantalum Inorganic materials 0.000 claims description 8
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 8
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 125000003118 aryl group Chemical group 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 229920000570 polyether Polymers 0.000 claims description 7
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- 125000003342 alkenyl group Chemical group 0.000 claims description 6
- 125000001072 heteroaryl group Chemical group 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 238000004544 sputter deposition Methods 0.000 claims description 6
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical group CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000004642 Polyimide Substances 0.000 claims description 5
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 5
- 125000000304 alkynyl group Chemical group 0.000 claims description 5
- 229920001643 poly(ether ketone) Polymers 0.000 claims description 5
- 229920002480 polybenzimidazole Polymers 0.000 claims description 5
- 229920002577 polybenzoxazole Polymers 0.000 claims description 5
- 229920006393 polyether sulfone Polymers 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- 239000002861 polymer material Substances 0.000 claims description 4
- 229920000193 polymethacrylate Polymers 0.000 claims description 4
- 238000004528 spin coating Methods 0.000 claims description 3
- RRQYJINTUHWNHW-UHFFFAOYSA-N 1-ethoxy-2-(2-ethoxyethoxy)ethane Chemical compound CCOCCOCCOCC RRQYJINTUHWNHW-UHFFFAOYSA-N 0.000 claims description 2
- SVONRAPFKPVNKG-UHFFFAOYSA-N 2-ethoxyethyl acetate Chemical compound CCOCCOC(C)=O SVONRAPFKPVNKG-UHFFFAOYSA-N 0.000 claims description 2
- CCTFMNIEFHGTDU-UHFFFAOYSA-N 3-methoxypropyl acetate Chemical compound COCCCOC(C)=O CCTFMNIEFHGTDU-UHFFFAOYSA-N 0.000 claims description 2
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 claims description 2
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 2
- 125000005129 aryl carbonyl group Chemical group 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- 229940019778 diethylene glycol diethyl ether Drugs 0.000 claims description 2
- 150000002170 ethers Chemical class 0.000 claims description 2
- UHKJHMOIRYZSTH-UHFFFAOYSA-N ethyl 2-ethoxypropanoate Chemical compound CCOC(C)C(=O)OCC UHKJHMOIRYZSTH-UHFFFAOYSA-N 0.000 claims description 2
- 239000002243 precursor Substances 0.000 claims description 2
- UGNWTBMOAKPKBL-UHFFFAOYSA-N tetrachloro-1,4-benzoquinone Chemical compound ClC1=C(Cl)C(=O)C(Cl)=C(Cl)C1=O UGNWTBMOAKPKBL-UHFFFAOYSA-N 0.000 claims description 2
- 150000003568 thioethers Chemical class 0.000 claims description 2
- 238000007738 vacuum evaporation Methods 0.000 claims description 2
- 238000007740 vapor deposition Methods 0.000 claims description 2
- 229920000292 Polyquinoline Polymers 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 17
- 239000002184 metal Substances 0.000 description 17
- 230000008569 process Effects 0.000 description 14
- 239000010410 layer Substances 0.000 description 10
- 150000002739 metals Chemical class 0.000 description 9
- 230000021615 conjugation Effects 0.000 description 5
- 229920002120 photoresistant polymer Polymers 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- 238000005019 vapor deposition process Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000004693 Polybenzimidazole Substances 0.000 description 3
- 239000004695 Polyether sulfone Substances 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000003446 memory effect Effects 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- FHCPAXDKURNIOZ-UHFFFAOYSA-N tetrathiafulvalene Chemical compound S1C=CSC1=C1SC=CS1 FHCPAXDKURNIOZ-UHFFFAOYSA-N 0.000 description 2
- HGOTVGUTJPNVDR-UHFFFAOYSA-N 2-(4,5-dimethyl-1,3-dithiol-2-ylidene)-4,5-dimethyl-1,3-dithiole Chemical compound S1C(C)=C(C)SC1=C1SC(C)=C(C)S1 HGOTVGUTJPNVDR-UHFFFAOYSA-N 0.000 description 1
- 240000008254 Rosa chinensis Species 0.000 description 1
- 235000000664 Rosa chinensis Nutrition 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 238000010549 co-Evaporation Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- MQWFLKHKWJMCEN-UHFFFAOYSA-N n'-[3-[dimethoxy(methyl)silyl]propyl]ethane-1,2-diamine Chemical compound CO[Si](C)(OC)CCCNCCN MQWFLKHKWJMCEN-UHFFFAOYSA-N 0.000 description 1
- SFDJOSRHYKHMOK-UHFFFAOYSA-N nitramide Chemical compound N[N+]([O-])=O SFDJOSRHYKHMOK-UHFFFAOYSA-N 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920001690 polydopamine Polymers 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- AZJPTIGZZTZIDR-UHFFFAOYSA-L rose bengal Chemical compound [K+].[K+].[O-]C(=O)C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1C1=C2C=C(I)C(=O)C(I)=C2OC2=C(I)C([O-])=C(I)C=C21 AZJPTIGZZTZIDR-UHFFFAOYSA-L 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K10/00—Organic devices specially adapted for rectifying, amplifying, oscillating or switching; Organic capacitors or resistors having potential barriers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K10/00—Organic devices specially adapted for rectifying, amplifying, oscillating or switching; Organic capacitors or resistors having potential barriers
- H10K10/701—Organic molecular electronic devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/611—Charge transfer complexes
Definitions
- the present invention relates to compositions for memory applications, relates to a memory cell which comprises the abovementioned composition and two electrodes, and furthermore relates to a method for producing microelectronic components and the use of the composition according to the invention in the production of these microelectronic components.
- organic semiconductors include light-emitting diodes, field-effect transistors, devices for switching memories, memory elements, logic elements and finally complex lasers. Because industry is moving from mass-to-molecule electronics, there is an increasing trend to take a closer look at the voltage-induced switching phenomena in conjugated organic compounds that were first observed over 30 years ago.
- Non-volatile and at the same time fast storage is the basic requirement for many portable devices such as Laptops, PDAs, cell phones, digital cameras, HDTVs, etc .; such devices should not require booting when turned on and a sudden power failure should not result in loss of data.
- a non-volatile memory in addition to materials with ferroelectric properties or storage elements consisting of magnetic tunnel
- MTJs are particularly suitable for materials that can reversibly change their resistance between two stable states (resistive effect).
- the two different contradictions Level values can be detected via the current flow.
- Another advantage of the resistive memory for example compared to the memory with a ferroelectric effect, is that the memory state is not erased when it is read out and must be written back again.
- memory elements made of resistive materials are constructed very simply.
- two different conductive states are observed at the same applied voltage.
- the two different conductive states are stable up to a certain amount of voltage and can be converted into one another if these threshold voltages are exceeded.
- the reversible switching back and forth between these two differently conductive states usually takes place by reversing the polarity of the voltage, the magnitude of the voltage having to be somewhat larger than the respective threshold voltages.
- the applied voltage has to be below the threshold voltage so that a transfer into the other state is prevented.
- the ON-OFF ratio is generally low (50-80) and the memory lasts only minutes (approximately 15 minutes in nitroamine-based systems).
- the origin of the highly conductive state was traced back to the conjugation modification via an electro-reduction of the molecules.
- the way to increase the ON-OFF ratio is to either increase the current in the ON state or to decrease the current in the OFF state.
- Bengal rose was chosen in the prior art, which has electron acceptor groups distributed over the entire surface of the molecule. In the absence of donor groups, the density of the electron distribution in the benzene rings is reduced and the conjugation in the molecule is strongly influenced.
- the present invention has for its object to provide a material that can be switched between two stable states of different resistivity and can therefore serve as a non-volatile memory. It is a further object of the present invention to provide a material which is used for the aforementioned purposes and by common methods in microelectronics, such as e.g. Spin coating, processable and switchable by using electrodes that are used in microelectronics. It is another object of the present invention to provide an organic material as a non-volatile memory, the material switching at low voltages.
- the material according to the invention provides the particular advantage that it can be switched at voltages of 1 V.
- the present invention accomplishes this by providing a new material for storage applications that includes a monomer M1 and additionally a monomer M2 and / or M3.
- the present invention relates to a composition for storage applications, which comprises the following constituents: a) a monomer Ml represented by the following formula 1 formula 1
- R 1, R 2 , R 3 and R 4 independently of one another are H, F, Cl, Br, I, OH, SH, substituted or unsubstituted alkyl, alkenyl, alkynyl, O-alkyl, O-alkenyl, O-alkynyl, S- Alkyl, S-alkenyl, S-alkynyl, aryl, heteroaryl, O-aryl, S-aryl, 0-heteroaryl, or S-heteroaryl, - (CF 2 ) n - F 3 , - CF ((CF 2 ) n CF. 3 ) 2 , - - (CF 2 ) n ⁇ * F 3 , ⁇ F (CF 3 ) 2 or - ⁇ (CF 3 ) 3 ; and
- n 0 to 10; a monomer M2 and / or M3 represented by the following formulas 2 and 3:
- R 9 , Rio, Rn, R ⁇ 2 independently of one another F, Cl, Br, I, CN, N0 2 , substituted or unsubstituted alkyl, alkenyl, alkynyl, O-alkyl, O-alkenyl, O-alkynyl, S- Are alkyl, S-alkenyl, S-alkynyl, aryl, heteroaryl, O-aryl, S-aryl, 0-heteroaryl, S-heteroaryl, aralkyl, arylcarbonyl; where Q is or
- the combinations of the monomers Ml and M2, Ml and M3, or Ml, M2 and M3 are possible.
- R 1, R 2 , R 3 and R 4 are independently substituted or unsubstituted alkyl, O-alkyl, S-alkyl, aryl, heteroaryl, 0-aryl, S-aryl, O-heteroaryl, or S-heteroaryl.
- R 9 , Rio, Rn, R12 are preferably independently of one another Cl, CN or N0 2 .
- R 9 , Rio, Rn, R12 in formula 2 and / or 3 are particularly preferred independently of one another
- alkyl as used herein includes unbranched and branched chain alkyl groups, as well as cycloalkyl groups with 1-10, particularly preferably 1-6 carbon atoms.
- alkenyl, alkynyl as used herein also relate to unbranched and branched-chain alkenyl or alkmyl groups which have 1-10, particularly preferably 1-6, carbon atoms.
- aryl * ⁇ as used herein relates to and encompasses aromatic hydrocarbon radicals preferably having 6-18, particularly preferably 6-10, carbon atoms.
- the composition according to the invention further comprises a polymer material.
- the monomers M1, M2 and / or M3 are formulated in a common, suitable solvent and this formulation is then problem-free, e.g. by means of spin coating, processed further.
- Preferred polymer materials here are polyethers, polyether sulfones, polyether sulfides, polyether ketones, polychmolines, polychmoxalms, polybenzoxazoles, polybenzimidazoles, polyethacrylates or polyimides, including their precursors, and mixtures and copolymers thereof.
- the mixture is preferably dissolved in a solvent.
- This solvent is preferably composed of N-methylpyrrolidone, gam a-butyrolactone, methoxypropyl acetate, ethoxyethyl acetate, ethers of ethylene glycol, in particular selected diethylene glycol diethyl ether, ethoxyethyl propionate, and ethyl acetate.
- these monomers can be chemically bound to the polymer and then dissolved in a solvent.
- the present invention is directed to a memory cell comprising a composition as previously defined and two electrodes, the composition being arranged between the two electrodes.
- Electrodes All materials commonly used in microelectronics are suitable as electrodes, but in particular electrodes made of AlSi, AlSiCu, copper, aluminum, titanium, tantalum, titanium nitride and tantalum nitride.
- the electrodes are preferably structured here, the structuring preferably being carried out by means of shadow masks or photolithographic techniques.
- the layer thicknesses for the composition and the electrodes are preferably each 20 nm to 2000 nm, particularly preferably 50 nm to 200 nm.
- adhesion promoters By using adhesion promoters, the adhesion of the polymers to surfaces relevant in microelectronics such as e.g. As silicon, silicon oxide, silicon nitride, tantalum nitride, tantalum, copper, aluminum, titanium or titanium nitride can be improved.
- the following compounds can preferably be used as adhesion promoters:
- the memory cell is present in combination with a diode, PIN diode, Z diode or a transistor.
- the invention is directed to a method for producing microelectronic components, which comprises the following steps: a) applying a first electrode to a silicon wafer, b) applying a composition as defined herein to the electrode formed in a) , c) applying a second electrode to the layer formed in b).
- the application in steps a) and c) takes place by means of vapor deposition or sputtering.
- the composition is preferably spin-coated and then dried.
- the monomers contained in the composition are applied simultaneously or in succession by means of vacuum evaporation.
- the composition according to the invention is preferably used in the production of microelectronic components or as a storage medium.
- FIG. 1 shows the exemplary cell structure of a memory cell according to the invention, comprising a silicon substrate with an SiO 2 surface, a layer of copper (sputtered) and, as the upper layer, the materials according to the invention and titanium pads.
- FIG 2 shows the circuit diagram used to measure the I (U) characteristic of the memory cell according to the invention.
- the SourceMeter Series 2400 from Keithley was used for the measurement.
- FIG 3 shows the typical I (U) characteristic of the cells according to the invention.
- a silicon wafer with an insulating SiO or SiN surface is a vapor deposition process in a high vacuum or the metal of the lower electrode (bottom electrode) is applied by a sputtering process.
- All metals relevant in microelectronics such as copper, aluminum, gold, titanium, tantalum, tungsten, titanium nitride or tantalum nitride can be used as metals.
- the structuring of the metals can take place either by applying the metals via shadow masks or by lithographic structuring with subsequent etching of the metals applied over the entire surface by known methods.
- polyether, polyether sulfone, polyether ketone, polyimide, polybenzoxazole, polybenzimidazole or polymethacrylate are mixed with 5g tetrathiafulvalene and 5.98g chloroanil in 75 g dist.
- VLSI-Selectipur ® Methylpyrrolidone (VLSI-Selectipur ® ) or dist. ⁇ -Butyrolactone (VLSI-Selectipur ® ) dissolved.
- the dissolving process is expediently carried out on a shaker at room temperature. The solution is then pressure filtered through a 0.2 ⁇ m filter into a cleaned, particle-free sample glass. The viscosity of the polymer solution can be changed by varying the dissolved mass of polymer.
- polyether, polyether sulfone, polyether ketone, polyimide, polybenzoxazole, polybenzimidazole or polymethacrylate are mixed with 4g tetrathiafulvalene and 4.78g chloroanil in 75 g dist.
- the dissolving process is expediently carried out on a shaker at room temperature.
- the solution is then pressure filtered through a 0.2 ⁇ m filter into a cleaned, particle-free sample glass.
- the viscosity of the Polymer solution can be changed by varying the dissolved mass of polymer.
- polyether, polyether sulfone, polyether ketone, polyimide, polybenzoxazole, polybenzimidazole or polymethacrylate are mixed with 5g tetramethyl tetrathiafulvalene and 4.35 dichlorodicyanophenzoquinone in 75 g dist. N-methylpyrrolidone (VLSI-Selectipur ® ) or dist. ⁇ -Butyrolactone (VLSI-Selectipur ® ) dissolved.
- the dissolving process is expediently carried out on a shaker at room temperature.
- the solution is then pressure filtered through a 0.2 ⁇ m filter into a cleaned, particle-free sample glass.
- the viscosity of the polymer solution can be changed by varying the dissolved mass of polymer.
- adhesion promoters By using adhesion promoters, the adhesion of the polymers to surfaces relevant in microelectronics such as e.g. As silicon, silicon oxide, silicon nitride, tantalum nitride, tantalum, copper, aluminum, titanium or titanium nitride can be improved.
- 0.5 g coupling agent eg N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane
- a cleaned, particle-free sample glass at room temperature in 95g methanol, ethanol or isopropanol (VLSI-Selectipur ® ) and 5g demineralized water.
- VLSI-Selectipur ® isopropanol
- the adhesion promoter solution is ready for use. This solution can be used for a maximum of 3 weeks.
- the adhesion promoter should result in a monomolecular layer on the surface.
- the coupling agent can expediently be applied by centrifugal technology.
- the adhesion promoter solution is applied over a 0.2 ⁇ m pre-filter and spun at 5000 rpm for 30s. This is followed by a drying step for 60 s at 100 ° C.
- Example 6 Application of a polymer by spin process
- the filtered solution of the polymer according to Examples 2 to 4 is applied to the wafer using a syringe and evenly distributed with a centrifuge on the silicon wafer processed according to Example 1 or possibly processed silicon wafer pretreated according to Example 5.
- the layer thickness should be in the range of 50 - 500nm.
- the polymer is then placed on a hot plate for 1 min. at 120 ° C and for 4 min. heated to 200 ° C.
- the Components Ml and M2 or M3 can also be applied by the generally known method of co-evaporation.
- the two components M1 and M2 are cover-vaporized, if possible in a molar ratio of 1: 1, to a layer thickness of 10-300 nm.
- the wafer should be cooled to 10 - 30 ° C.
- Example 8 Production of the top electrode using a shadow mask
- the metal of the top electrode is applied to the silicon wafer processed according to Example 6 or 7 via a shadow mask by a vapor deposition process in a high vacuum or by a sputtering process. All metals relevant in microelectronics such as e.g. Copper, aluminum, gold, titanium, tantalum, tungsten, titanium nitride or tantalum nitride can be used.
- Example 9 Production of the top electrode by a lithographic process
- the metal of the top electrode is applied to the entire surface of the silicon wafer processed according to Example 6 or 7 by a vapor deposition process in a high vacuum or by a sputtering process. All metals relevant in microelectronics such as copper, aluminum, gold, titanium, tantalum, tungsten, titanium nitride or tantalum nitride can be used as metals.
- a photoresist is applied to the metal, exposed and structured using a spin-on process. The metal not covered with the photoresist is then removed using an etching process using known methods. The remaining photoresist is removed with a suitable stripper.
- Example 10 Production of the top electrode by a lift-off process
- a photoresist is applied, exposed and structured on the silicon wafer processed according to Example 6 or 7 using known methods.
- the metal of the top electrode is then applied over the entire surface by a vapor deposition process in a high vacuum or by a sputtering process. All metals relevant in microelectronics such as e.g. Copper, aluminum, gold, titanium, tantalum, tungsten, titanium nitride or tantalum nitride can be used.
- the photoresist and the metal adhering to it are removed by a lift-off process.
- the I (U) characteristic is measured in accordance with the circuit diagram shown in FIG.
- the SourceMeter Series 2400 from Keithley was used for the measurement.
- the cells show the typical I (U) characteristic shown in FIG. 3.
- the cells switch from a high-resistance state at approx. +0.6 V to Cu to a stable, low-resistance state and at - 0.3 V to Cu back to a stable, high-resistance state. These two resistively different states are stable even in the de-energized case.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Semiconductor Memories (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10345403A DE10345403A1 (de) | 2003-09-30 | 2003-09-30 | Material und Zellenaufbau für Speicheranwendungen |
| PCT/EP2004/010924 WO2005034172A2 (de) | 2003-09-30 | 2004-09-30 | Material und zellenaufbau für speicheranwendungen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1668669A2 true EP1668669A2 (de) | 2006-06-14 |
Family
ID=34399076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04765710A Withdrawn EP1668669A2 (de) | 2003-09-30 | 2004-09-30 | Material und zellenaufbau für speicheranwendungen |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20060237716A1 (de) |
| EP (1) | EP1668669A2 (de) |
| JP (1) | JP2007507869A (de) |
| KR (1) | KR100821691B1 (de) |
| CN (1) | CN1860624A (de) |
| DE (1) | DE10345403A1 (de) |
| WO (1) | WO2005034172A2 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5665256B2 (ja) * | 2006-12-20 | 2015-02-04 | キヤノン株式会社 | 発光表示デバイス |
| US7657999B2 (en) * | 2007-10-08 | 2010-02-09 | Advantech Global, Ltd | Method of forming an electrical circuit with overlaying integration layer |
| EP3813132A1 (de) * | 2019-10-21 | 2021-04-28 | Merck Patent GmbH | Elektronische schaltvorrichtung |
| CN111009611B (zh) * | 2019-11-13 | 2022-07-12 | 浙江师范大学 | 有机无机杂化纳米薄膜阻变存储器的制备方法 |
| CN113871415A (zh) * | 2021-11-17 | 2021-12-31 | 长江先进存储产业创新中心有限责任公司 | 相变存储器及其制备方法 |
| CN114512602A (zh) * | 2022-01-28 | 2022-05-17 | 长江先进存储产业创新中心有限责任公司 | 相变存储器及其制作方法 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5185208A (en) * | 1987-03-06 | 1993-02-09 | Matsushita Electric Industrial Co., Ltd. | Functional devices comprising a charge transfer complex layer |
| JPS63237293A (ja) * | 1987-03-24 | 1988-10-03 | Matsushita Electric Ind Co Ltd | 可変調分子素子 |
| JP3153537B2 (ja) | 1988-03-29 | 2001-04-09 | 株式会社東芝 | 有機薄模素子 |
| US5155566A (en) * | 1990-03-27 | 1992-10-13 | Kabushiki Kaisha Toshiba | Organic thin film element |
| AR015425A1 (es) * | 1997-09-05 | 2001-05-02 | Smithkline Beecham Corp | Compuestos de benzotiazol, composicion farmaceutica que los contiene, su uso en la manufactura de un medicamento, procedimiento para su preparacion,compuestos intermediarios y procedimiento para su preparacion |
| DE10016972A1 (de) * | 2000-04-06 | 2001-10-25 | Angew Solarenergie Ase Gmbh | Solarzelle |
| JP2001345431A (ja) * | 2000-05-31 | 2001-12-14 | Japan Science & Technology Corp | 有機強誘電体薄膜及び半導体デバイス |
| US20020021204A1 (en) * | 2000-08-18 | 2002-02-21 | Ga-Tek Inc. (Dba Gould Electronics Inc.) | Method and component for forming an embedded resistor in a multi-layer printed circuit |
| US20020146556A1 (en) * | 2001-04-04 | 2002-10-10 | Ga-Tek Inc. (Dba Gould Electronics Inc.) | Resistor foil |
| US6858481B2 (en) * | 2001-08-13 | 2005-02-22 | Advanced Micro Devices, Inc. | Memory device with active and passive layers |
| SG142163A1 (en) * | 2001-12-05 | 2008-05-28 | Semiconductor Energy Lab | Organic semiconductor element |
| US7274035B2 (en) * | 2003-09-03 | 2007-09-25 | The Regents Of The University Of California | Memory devices based on electric field programmable films |
-
2003
- 2003-09-30 DE DE10345403A patent/DE10345403A1/de not_active Withdrawn
-
2004
- 2004-09-30 CN CNA2004800285547A patent/CN1860624A/zh active Pending
- 2004-09-30 WO PCT/EP2004/010924 patent/WO2005034172A2/de not_active Ceased
- 2004-09-30 JP JP2006530053A patent/JP2007507869A/ja not_active Withdrawn
- 2004-09-30 EP EP04765710A patent/EP1668669A2/de not_active Withdrawn
- 2004-09-30 KR KR1020067006060A patent/KR100821691B1/ko not_active Expired - Fee Related
-
2006
- 2006-03-29 US US11/392,238 patent/US20060237716A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005034172A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005034172A3 (de) | 2005-08-18 |
| KR100821691B1 (ko) | 2008-04-14 |
| WO2005034172A2 (de) | 2005-04-14 |
| DE10345403A1 (de) | 2005-04-28 |
| KR20060096001A (ko) | 2006-09-05 |
| US20060237716A1 (en) | 2006-10-26 |
| JP2007507869A (ja) | 2007-03-29 |
| CN1860624A (zh) | 2006-11-08 |
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