Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
  • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
  • H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
  • H01B1/12—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances organic substances
• • 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
  • H10K85/10—Organic polymers or oligomers
  • H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
  • H10K85/113—Heteroaromatic compounds comprising sulfur or selene, e.g. polythiophene
  • H10K85/1135—Polyethylene dioxythiophene [PEDOT]; Derivatives thereof
• • 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 a potential-jump barrier or a surface barrier
• • 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 a potential-jump barrier or a surface barrier
  • H10K10/40—Organic transistors
• • H—ELECTRICITY
  • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
  • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
  • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
  • H10K71/60—Forming conductive regions or layers, e.g. electrodes
• • 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
  • H10K85/10—Organic polymers or oligomers
  • H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
• • 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
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E10/00—Energy generation through renewable energy sources
  • Y02E10/50—Photovoltaic [PV] energy
  • Y02E10/549—Organic PV cells
• • 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
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
  • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
  • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

• the invention relates to a material for a functional layer of an organic electronic component, in particular one from which both a conductive, a semiconducting and an insulating functional layer can be formed.
• PEDOT-PSS poly (3,4-ethylenedioxythiophene) -poly (styrene-sulfonate)] or PA I (polyaniline) -PSS are known. These materials result in functional layers as thin films of the respective functional polymer.
• the invention relates to a material for forming a functional layer of an electronic component with adjustable conductivity, the material comprising a mixture of at least two fractions of a functional polymer, namely a first fraction based on a dispersion of the functional polymer in a first solvent which the functional polymer is at least partially dispersed and a second fraction of functional polymer which is based on a real solution of the functional polymer in a second solvent, the two fractions being processed, dispersed and / or dissolved together and by the mixing ratio of the at least two fractions the conductivity of the functional layer formed from this material can be adjusted in connection with the thickness of the functional layer.
• the invention also relates to a method for producing a material for a functional layer of an electronic component, in which a mixture of two different fractions
• a dispersion of the functional polymer and a solution of the functional polymer are mixed with high-boiling solvent, then the lower-boiling solvent is removed by distillation in such a way that the various fractions of functional polymer in the high-boiling solvent ultimately essentially form the material.
• the high-boiling solvent is added in equal parts to the fraction.
• the material is essentially free of the solvent and / or dispersant of the fractions on which it is based and / or comprises an additional, third solvent.
• the material can be any other additives and additives such as these types the materials are common and / or useful, such as defoamers or wetting agents etc.
• the “material *” is always the material according to the invention for forming a functional layer of an organic electronic component.
• the two fractions are each in dry substance before the dispersion / solution.
• the two fractions denote two modifications, i.e. two presumably different states of a substance.
• the functional polymer is PEDOT or PANI.
• the functional polymer is in the form of a copolymer or mixture which comprises PSS polystyrene sulfonate as anions.
• the first solvent is water or another high polarity component in which the functional polymer is substantially insoluble.
• the second solvent ethanol or another low-boiling, polar solvent is preferably a polar-protic, which can form H-bridge bonds.
• low-boiling * is understood here to mean solvents which have a boiling temperature of up to 150 ° C.
• the third solvent is different from the first and / or the second solvent.
• ethylene glycol or another alcohol is used as the third solvent.
• sets especially also mixtures of several alcohols and / or alcohols with a carbon content of C4 to CIO, branched and unbranched, also polyhydric alcohols, or mixtures thereof, and mixtures with water, particularly preferably glycol and glycerol.
• solution is used when individual polymer particles are essentially surrounded by solvent molecules and it is in contrast to the term “dispersion”, which denotes the state in which individual polymer particles conglomerate and form clusters, for example, but do not precipitate or settle out, but instead are essentially dispersed and do not form a precipitate, i.e. larger solid agglomerations.
• a component is referred to here as a solvent or as a dispersing agent only depends on how the functional polymer in question behaves in this agent. The conditions that prevail during production, storage and / or processing must be considered.
• organic material or “functional material” or * functional polymer ”here encompasses all types of organic, organometallic and / or organic-inorganic plastics (hybrids), in particular those which are referred to in English, for example, as“ plastics ” all types of substances with the exception of the semiconductors that form the classic diodes (germanium, silicon) and the typical metallic conductors. Accordingly, a restriction in the dogmatic sense to organic material as carbon-containing material is not intended, but rather is the term is intended to be widely used, for example silicones, and the term should not be subject to any restriction with regard to the molecular size, in particular to polymeric and / or oligomeric materials, but the use of "small molecules" is also entirely possible
• Polymer in the functional polymer is historically determined and therefore contains no information about the existence of an actual lent polymeric compound and no statement whether it is a polymer mixture or a copolymer or not.
• a dry substance is a substance that is essentially free of solvent.
• An “organic, electronic component *” here is, for example, a transistor, a diode, an optocoupler, a solar cell, an organic light-emitting diode, organic lighting, a display (active and passive matrix), a conductive fabric, an antistatic coating, or an optoelectronic component designated.
• the conductivity is modified by many orders of magnitude without changing the solvent environment.
• a mixture of two different PEDOT solutions both with the same solvent, e.g.
• Ethylene glycol which have different conductivities due to their history (one solution is made from a water-based solution, the other from an ethanol-based solution).
• the solution obtained from water-based PEDOT (WPEDOT) has a specific resistance of 10 ⁇ 2 ⁇ cm, that from ethanol-based PEDOT (EPEDOT) has a specific resistance of 10 7 ⁇ cm.
• the surface conductivity can even be varied by 10 orders of magnitude by adjusting the layer thickness (between 5 nm and 500 ⁇ m).
• a surface resistance is generally given for this.
• the ITO used for LCDs, OLEDs or solar cells has a sheet resistance of 20 OHM / square as the anode.
• a Pedot mixture with 10 s / cm (corresponds to 10 "1 Ohm cm specific resistance) achieves these conductive properties with a layer thickness of 5 ⁇ m.
• the same volume of ethylene glycol is added to the original solutions, which are commercially available, for example, from HC Starck, and then the original solvent is distilled off in a rotary evaporator. Since ethylene glycol can only be distilled at 200 ° C, a pure glycolic PEDOT solution then remains. Since the original materials WPEDOT and EPEDOT are of a different nature, in the case of the WPEDOT the conductivity is drastically reduced by replacing the water with ethylene glycol, which is due to the dispersive nature of the WPEDOT. In the case of the EPEDOT, which is a real solution, the conductivity is not changed by replacing the ethanol with ethylene glycol. This creates two glycolic PEDOT variations with 5 orders of magnitude of different conductivity. By mixing (blending) the two solutions, any conductivity in between can now be set (see Figure 1).
• the present invention is intended to solve the problem of targeted fine tuning (“tuning *”) of the conductivity of the polymer film over many orders of magnitude while maintaining the optimum solution or dispersion properties for the coating process.
• This invention makes it possible to use a low-cost coating method, such as a polymer film, the conductivity of which can be chosen in a wide range.
• the invention relates to a material (polymer mixture) for forming a thin layer (5 nm to 500 ⁇ m) with adjustable conductivity.
• the material comprises at least a mixture of two different fractions of a functional polymer, preferably in a solvent.
• the invention relates to a material for applying thin organic layers with conductivity that can be set in a defined manner.
• the material comprises at least a mixture of two different fractions of a functional polymer, preferably in a solvent, and comes e.g. as a functional layer of an organic electronic component by means of various application techniques.

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• 2003
  • 2003-06-05 CN CN038138786A patent/CN1663061A/zh active Pending
  • 2003-06-05 JP JP2004514159A patent/JP2005530351A/ja active Pending
  • 2003-06-05 WO PCT/DE2003/001867 patent/WO2003107453A2/de not_active Application Discontinuation
  • 2003-06-05 EP EP03759828A patent/EP1514318A2/de not_active Withdrawn
  • 2003-06-05 US US10/515,159 patent/US7871543B2/en active Active
• 2011
  • 2011-01-05 US US12/985,145 patent/US8696941B2/en not_active Expired - Lifetime

Non-Patent Citations (1)

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