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82results about How to "Facilitates electron injection" patented technology
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Perylene n-type semiconductors and related devices
ActiveUS20050176970A1Improve solubilityImproved radical anion stabilityOrganic chemistryNaphthalimide/phthalimide dyesPeryleneElectron
Mono- and diimide perylene and naphthalene compounds, N- and core-substituted with electron-withdrawing groups, for use in the fabrication of various device structures.
Owner:DARPA
High efficiency ultraviolet light emitting diode with band structure potential fluctuations
ActiveUS20140103289A1Improve efficiencyFacilitates electron injectionSemiconductor/solid-state device manufacturingSemiconductor devicesSemiconductor materialsUltraviolet light emitting diodes
A method of growing an AlGaN semiconductor material utilizes an excess of Ga above the stoichiometric amount typically used. The excess Ga results in the formation of band structure potential fluctuations that improve the efficiency of radiative recombination and increase light generation of optoelectronic devices, in particular ultraviolet light emitting diodes, made using the method. Several improvements in UV LED design and performance are also provided for use together with the excess Ga growth method. Devices made with the method can be used for water purification, surface sterilization, communications, and data storage and retrieval.
Owner:TRUSTEES OF BOSTON UNIV
Organic electroluminescent device
InactiveUS20060257684A1Improve efficiencyLow efficiencyDischarge tube luminescnet screensElectroluminescent light sourcesTriplet stateElectron
An organic electroluminescence device comprising a cathode, an anode and at least one layer comprising a phosphorescent light emitting material and a host material which is sandwiched between the cathode and the anode and further comprising an electron injecting layer which is adhered to the light emitting layer and is capable of transporting electrons, wherein an ionization potential of the host material is 5.9 eV or smaller, and wherein an energy gap of the electron transporting material in the electron injecting layer is smaller than that of the host material in the light emitting layer or wherein a triplet energy of the electron transporting material in the electron injecting layer is smaller than that of the host material in the light emitting layer. It emits phosphorescent light with enhanced efficiency because it comprises a light emitting layer and an electron injecting layer both satisfying specified condition and employs a light emitting layer capable of electron transporting.
Owner:IDEMITSU KOSAN CO LTD
Phosphorescent OLED having double hole-blocking layers
InactiveUS20090191427A1Good effectFacilitates electron injectionSolid-state devicesNatural mineral layered productsDopantPhosphorescent oleds
An organic light-emitting device has a first hole-blocking layer in contact with a phosphorescent light-emitting layer and a second hole-blocking layer in contact with the first. The material in the first hole-blocking layer has a triplet energy greater than the host of the phosphorescent layer and the material in the second hole-blocking layer has a triplet energy higher than the dopant in the phosphorescent layer. Both hole-blocking materials have lower HOMO energies than the host of the phosphorescent light-emitting layer
Owner:GLOBAL OLED TECH
Organic light emitting devices
InactiveUS20020135296A1Minimize and reduce changeEnable stabilizationDischarge tube luminescnet screensLamp detailsElectronic transmissionElectron injection
An organic light emitting device containing (i) a substrate; (ii) a first electrode, such as an anode; (iii) a mixed region comprising a mixture of a hole transport material and an electron transport material, and wherein this mixed region includes at least one organic luminescent material; (iv) a second electrode, such as a cathode; (v) a thermal protective element coated on the second electrode; wherein, one of the two said first and second electrodes is a hole injection anode, and one of the two electrodes is an electron injection cathode, and wherein the organic light emitting device further comprises; (vi) a hole transport region, interposed between the anode and the mixed region, wherein the hole transport region optionally includes a buffer layer; and (vii) an electron transport region interposed between the cathode and the mixed region.
Owner:LG DISPLAY CO LTD
Novel materials for organic electroluminescent devices
ActiveCN101490207ALow LUMOFacilitates electron injectionStyryl dyesGroup 4/14 element organic compoundsHost materialOrganic electroluminescence
The invention relates to the compounds of formulae (1) to (6) and to organic electroluminescent devices, especially blue-emitting devices, in which these compounds are used as the host material or doping agent in the emitting layer and / or as the hole transport material and / or as the electron transport material.
Owner:MERCK PATENT GMBH
Organic electroluminescence device
InactiveUS20070134511A1Increase brightnessReducing dopantOrganic chemistryDischarge tube luminescnet screensAnthraceneOrganic electroluminescence
An organic electroluminescent device including a pair of electrodes and an emitting layer provided between the pair of electrodes, the emitting layer comprising a derivative having an unsymmetrically substituted anthracene as a partial structure and an amine derivative represented by Formula (1), wherein Ar1 to Ar4 are independently a substituted or unsubstituted aromatic ring having 6 to 50 nucleus carbon atoms, R1 and R2 may be the same or different substituents and linked to each other to form a saturated or unsaturated ring, and p is an integer of 1 to 6.
Owner:IDEMITSU KOSAN CO LTD
Electron injection composition for light emitting element, light emitting element, and light emitting device
ActiveUS6914269B2Facilitates electron injectionHard to crystallize with timeElectroluminescent light sourcesSolid-state devicesAlkaline earth metalElectron injection
In the present invention, an electron injection composition for a light-emitting element, comprising a pyridine derivative represented by general formula 1 and at least one of an alkali metal, an alkali earth metal, and a transition metal, is used to form an electron injection layer in a portion of a layer including luminescent material in a light-emitting element, and it is also an object of the present invention to provide, by using the composition, a light-emitting element that has more superior characteristics and a longer lifetime as compared to conventional ones. (where each of R1 to R8 represents hydrogen, halogen, a cyano group, an alkyl group having 1 to 10 carbon atoms, a haloalkyl group having 1 to 10 carbon atoms, an alkoxyl group having 1 to 10 carbon atoms, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group.)
Owner:SEMICON ENERGY LAB CO LTD
Highly transparent top electrode for OLED device
InactiveUS6875320B2Optimize viewing and image qualityImprove efficiencyElectroluminescent light sourcesVacuum evaporation coatingElectron injectionOptoelectronics
A method of making an OLED device capable of emitting light through the top electrode of such device includes providing a substrate and an anode over the substrate; providing an emissive layer disposed over the anode; providing first and second layers over the emissive layer with the first layer being in contact with the emissive layer or electron-transport layer and having a compound that includes an electron-injecting element, and the second layer having a reactive metal, and wherein such reactive metal reacts with the compound to release the electron-injecting element that dopes the interfacial region of the emissive layer or electron-transport layer to improve electron-injection and also reduces the reflectivity of the first and second layers is reduced; and providing a transparent conducting non-metallic top electrode over the second layer.
Owner:GLOBAL OLED TECH
Organic electroluminescent device comprising triazine derivatives
ActiveUS8679647B2Improve efficiencyFacilitates electron injectionOrganic chemistryDischarge tube luminescnet screensTriazine derivativeOrganic electroluminescence
Owner:MERCK PATENT GMBH
Optical substrate, semiconductor light-emitting element and method of manufacturing semiconductor light-emitting element
InactiveUS20150048380A1Improve light extractionImprovement of internal quantum efficiency IQESemiconductor/solid-state device testing/measurementSemiconductor/solid-state device manufacturingConvex structureQuantum efficiency
In an optical substrate (1), a concave-convex structure (12) including a plurality of independent convex portions (131 to 134) and concave portions (14) provided between the convex portions (131 to 134) is provided in a surface. The average interval Pave between the adjacent convex portions (131 to 134) in the concave-convex structure (12) satisfies 50 nm≦Pave≦1500 nm, and the convex portion (133) having a convex portion height hn satisfying 0.6 h≧hn≧0 h for the average convex portion height Have is present with a probability Z satisfying 1 / 10000≦Z≦1 / 5. When the optical substrate (1) is used in a semiconductor light-emitting element, dislocations in a semiconductor layer are dispersed to reduce the dislocation density, and thus internal quantum efficiency IQE is improved, and a waveguide mode is removed by light scattering and thus the light the extraction efficiency LEE is increased, with the result that the efficiency of light emission of the semiconductor light-emitting element is enhanced.
Owner:ASAHI KASEI KK
Organic / macromolecule top emission light-emitting device and its application
InactiveCN1731901AFacilitates electron injectionImprove long-term stabilityElectroluminescent light sourcesSolid-state devicesElectron injectionFluorescence
This invention discloses an organic macromolecule top light emitting device, which comprises a glass substrate, a negative pole, a light-emitting layer, a positive pole, characterized in that: an electron layer is located between the positive pole and light-emitting layer adopting conjugated polymer of polar monomer with polar gene or ionic gene. The invention discloses the application of the top light-emitting device in high-resolution full color top emitting monitor, characterized in: using a high work function metal negative pole on the substrate and a conjugated polymer of strong polarity component with polarity gene or ionic gene, actualizing effective electron injection, via desposit the electroluminescence emits in the transparent positive pole, with stable efficiency.
Owner:GUANG ZHOU NEW VISION OPTO ELECTRONICS TECH
S,S-dioxo-dibenzothiophene monomer containing polar substituent groups, water/alcohol soluble polymers thereof, and application thereof
ActiveCN103224486AFacilitates electron injectionPlays the role of injection / hole blockingGroup 5/15 element organic compoundsSolid-state devicesElectron injectionLight-emitting diode
The invention discloses a S,S-dioxo-dibenzothiophene monomer containing polar substituent groups, water / alcohol soluble polymers thereof, and an application thereof The water / alcohol soluble linear polymers of the S,S-dioxo-dibenzothiophene monomer containing the polar substituent groups and hyperbranched polymers can be used as a cathode interface modification layer of high work function metals, such as aluminium and gold, and thus applied in light-emitting diodes and photovoltaic cell devices. Compared with present polymers (PFN) used for cathode interface layers, the S,S-dioxo-dibenzothiophene unit polymers containing the polar groups has relatively low highest occupied molecular orbital (HOMO) energy level and can simultaneously play effects of electron injection and hole blocking. The polymer can be dissolved in methanol, N,N-dimethyl formamide (DMF), dimethyl sulfoxide (DMSO), water and other polar solvents, and thus phenomena of interface mixing do not occur between an electron transport layer and an active layer during constructing multilayer devices.
Owner:SOUTH CHINA UNIV OF TECH
1,3,5-triazine derivative, production method thereof and organic electroluminescence device comprising this as a composing component
ActiveUS7994316B2Excellent luminescence characteristic and durabilityFacilitates electron injectionOrganic chemistryDischarge tube luminescnet screensLeaving groupTriazine derivative
Since the conventional electron transporters have low thermal stability, the organic electroluminescent devices using them are not sufficient in terms of the compatibility of their luminance and luminous efficiency with device lifetime.A 1,3,5-triazine derivative of formula (1) is obtained by a metal catalyst-aided coupling reaction of a compound of formula (2) with a compound of formula (3), and this is used as a composing component of an organic electroluminescent device.[In the formulae, Ar1 and Ar2 represent phenyl group or the like, R1 and R2 represent hydrogen atom or the like, R3 represents methyl or the like, m is an integer of 0 to 2, X represents 2,4-pyridylene or the like, p is 1 or 2, a and b are 1 or 2, a+b is 3, q is 0 or an integer of p or less, M represents —MgR4 group or the like, R4 represents chlorine atom or the like, r is p-q, and Y represents a leaving group.]
Owner:TOSOH CORP +1
1,3,5-triazine derivative, production method thereof and organic electroluminescence device comprising this as a composing component
ActiveUS20090281311A1Improve electron injection efficiencyReduce the driving voltageOrganic chemistryDischarge tube luminescnet screensPtru catalystLeaving group
Since the conventional electron transporters have low thermal stability, the organic electroluminescent devices using them are not sufficient in terms of the compatibility of their luminance and luminous efficiency with device lifetime.A 1,3,5-triazine derivative of formula (1) is obtained by a metal catalyst-aided coupling reaction of a compound of formula (2) with a compound of formula (3), and this is used as a composing component of an organic electroluminescent device.[In the formulae, Ar1 and Ar2 represent phenyl group or the like, R1 and R2 represent hydrogen atom or the like, R3 represents methyl or the like, m is an integer of 0 to 2, X represents 2,4-pyridylene or the like, p is 1 or 2, a and b are 1 or 2, a+b is 3, q is 0 or an integer of p or less, M represents —MgR4 group or the like, R4 represents chlorine atom or the like, r is p-q, and Y represents a leaving group.]
Owner:TOSOH CORP +1
Electron injection composition for light emitting element, light emitting element, and light emitting device
InactiveUS20050147847A1Facilitates electron injectionHard to crystallize with timeDischarge tube luminescnet screensElectroluminescent light sourcesElectron injectionAlkaline earth metal
In the present invention, an electron injection composition for a light-emitting element, comprising a pyridine derivative represented by general formula 1 and at least one of an alkali metal, an alkali earth metal, and a transition metal, is used to form an electron injection layer in a portion of a layer including luminescent material in a light-emitting element, and it is also an object of the present invention to provide, by using the composition, a light-emitting element that has more superior characteristics and a longer lifetime as compared to conventional ones. (where each of R1 to R8 represents hydrogen, halogen, a cyano group, an alkyl group having 1 to 10 carbon atoms, a haloalkyl group having 1 to 10 carbon atoms, an alkoxyl group having 1 to 10 carbon atoms, a substituted or unsubstituted aryl group, or a substituted or unsbstituted heterocyclic group.)
Owner:SEMICON ENERGY LAB CO LTD
Light emitting device and method of producing light emitting device
InactiveUS20090134427A1Facilitates electron injectionIncrease brightnessDischarge tube luminescnet screensLamp detailsLight-emitting diodeLight emitting device
There has not been a DC drive type light emitting device capable of providing high brightness. The present invention provides a light emitting device, including: a pair of electrodes; a light emitter placed between the electrodes; and a semiconductor laminated to be adjacent to the light emitter, in which the semiconductor contains one of a chalcopyrite and an oxychalcogenide.
Owner:CANON KK
Dye-sensitized solar cell
InactiveUS20090020159A1Improve efficiencyEfficient injectionElectrolytic capacitorsSolid-state devicesElectronCounter current
A dye-sensitized solar cell includes a first electrode layer, a photosensitive dye layer, a second electrode layer, an energy-level intermediary layer, a first substrate and a second substrate. The photosensitive dye layer is used to receive sunlight and convert the sunlight to electrons and holes for being released. The first electrode layer is disposed on one side of the photosensitive dye layer to receive the electrons generated from the photosensitive dye layer. The second electrode layer is disposed on the other side of the photosensitive dye layer to receive the holes generated from the photosensitive dye layer. The energy-level intermediary layer is positioned between the first electrode layer and the photosensitive dye layer, so as to improve an injection efficiency of electrons and to prevent the generation of counter current, and thereby enhancing photoelectric conversion efficiency of the cell.
Owner:NATIONAL YUNLIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Hybrid polymer light-emitting devices
InactiveUS20080084158A1Maintain good propertiesShort response timeDischarge tube luminescnet screensLamp detailsPhotoelectrochemical cellLuminescent polymers
Mixtures and light-emitting devices that incorporate such mixtures are disclosed in which a soluble phenyl-substituted poly(para-phenylene vinylene) (PPV) copolymer (“superyellow”) is used as the host light-emitting polymer and methyltrioctylammonium trifluoromethanesulfonate, an ionic liquid, is used to introduce a dilute concentration of mobile ions into the emitting polymer layer. These mixtures and devices incorporating them are able to combine some of the characteristics of polymer light emitting diodes (PLEDs) and polymer light-emitting electrochemical cells (PLECs).
Owner:RGT UNIV OF CALIFORNIA
Organic light emitting display device
InactiveUS20160163771A1Extended service lifeSmall increase in lifetime of deviceSolid-state devicesSemiconductor/solid-state device manufacturingDisplay deviceLight-emitting diode
An organic light emitting display device is disclosed. The organic light emitting display device includes a first light emitting part between an anode and a cathode, the first light emitting part having a first light emitting layer, and a second light emitting part between the first light emitting part and the cathode, the second light emitting part having a second light emitting layer and a third light emitting layer, wherein the second light emitting layer includes a hole-type host and a first electron-type host, and the third light emitting layer includes a first electron-type host and a second electron-type host.
Owner:LG DISPLAY CO LTD
Organic electroluminescent devices with organic layers deposited at elevated substrate temperatures
InactiveUS20020182307A1Improve performanceShort range orderDischarge tube luminescnet screensElectroluminescent light sourcesOrganic filmShort range order
An organic light-emitting diode has been disclosed, in which crystalline organic films were utilized to increase device stability upon operation. Correspondingly, a novel method has been developed to improve device performance through depositing organic electroluminescent materials at elevated substrate temperatures. The improvements are attributed to the formation of crystalline films or amorphous films with a better short range order.
Owner:CITYU RES
Polyaza-spirobifluorene compound and organic optoelectronic device using the same
PendingCN108997342ASimple structureExtended service lifeGroup 5/15 element organic compoundsSolid-state devicesOrganic solar cellOrganic field-effect transistor
The invention provides a polyaza-spirobifluorene compound and its use in an organic optoelectronic device. The polyaza-spirobifluorene compound has a chemical formula (1). The polyaza-spirobifluorenecompound can be used as an electron transport material, an electron injecting material and a hole blocking material in organic photoelectric devices especially such as organic electroluminescent devices (OLEDs), organic field-effect transistors (OFETs) and organic solar cells. The polyaza-spirobifluorene compound also can be used as a host material or an illuminant material in an OLED. The polyaza-spirobifluorene compound has an adjustable energy level, good compatibility with other functional layer materials, a high glass transition temperature, good thermal and light stability and a tripletenergy level meeting exciton binding requirements, improves the efficiency of the organic electroluminescent devices (OLEDs), reduces the operating voltage of OLED, prolongs the service life of OLED and has a good application prospect.
Owner:SHANGHAI FUTURE OPTOETECH CO LTD
Electron injection composition for light emitting element, light emitting element, and light emitting device
InactiveUS7189996B2Facilitates electron injectionHard to crystallize with timeElectroluminescent light sourcesSolid-state devicesElectron injectionAlkaline earth metal
In the present invention, an electron injection composition for a light-emitting element, comprising a pyridine derivative represented by general formula 1 and at least one of an alkali metal, an alkali earth metal, and a transition metal, is used to form an electron injection layer in a portion of a layer including luminescent material in a light-emitting element, and it is also an object of the present invention to provide, by using the composition, a light-emitting element that has more superior characteristics and a longer lifetime as compared to conventional ones.(where each of R1 to R8 represents hydrogen, halogen, a cyano group, an alkyl group having 1 to 10 carbon atoms, a haloalkyl group having 1 to 10 carbon atoms, an alkoxyl group having 1 to 10 carbon atoms, a substituted or unsubstituted aryl group, or a substituted or unsbstituted heterocyclic group.)
Owner:SEMICON ENERGY LAB CO LTD
Novel fluorene bipolar fluorescent material based on anthraquinone group and application of novel fluorene bipolar fluorescent material in organic light emitting diodes
ActiveCN105482813AFacilitates electron injectionImprove transmission performanceOrganic chemistrySolid-state devicesAnthraquinonesCharge carrier
The invention relates to a novel fluorene bipolar fluorescent material based on an anthraquinone group and application of the novel fluorene bipolar fluorescent material in organic light emitting diodes; the material has a D-Pi-A type or an A-Pi-A type intramolecular charge transfer structure, the general structural formula is shown in the formula I; the material shown in the formula I has bipolar charge carrier transport property, the organic light emitting diodes prepared by utilizing the material have good luminescence property, the synthesis and purification operation of the material are simple, the yield is high, and the material is an ideal choice for a material for changing yellow light to red light in the organic light emitting diodes; it can be expected that the material can be an organic electroluminescent material with the commercial potential.
Owner:NANJING UNIV OF POSTS & TELECOMM
Light emitting element, light emitting device, and electronic apparatus
ActiveUS20170279068A1Improve display qualityHigh quality and reliableSolid-state devicesSemiconductor/solid-state device manufacturingLight emitting deviceMaterials science
An organic EL element includes a pixel electrode, a light emitting function layer that is formed on the pixel electrode, an electron injection layer formed on the light emitting function layer, and a counter electrode that is formed on the electron injection layer and that has semi-transmissive reflectivity, in which the counter electrode contains a reductive material that reduces material of the electron injection layer and Ag with atomic ratio of 75% or more, and an adsorption layer is formed on the counter electrode.
Owner:SEIKO EPSON CORP
Organic electroluminescent device
InactiveUS8623524B2Improve efficiencyLow efficiencyDischarge tube luminescnet screensElectroluminescent light sourcesTriplet stateLight-emitting diode
An organic electroluminescence device comprising a cathode, an anode and at least one layer comprising a phosphorescent light emitting material and a host material which is sandwiched between the cathode and the anode and further comprising an electron injecting layer which is adhered to the light emitting layer and is capable of transporting electrons, wherein an ionization potential of the host material is 5.9 eV or smaller, and wherein an energy gap of the electron transporting material in the electron injecting layer is smaller than that of the host material in the light emitting layer or wherein a triplet energy of the electron transporting material in the electron injecting layer is smaller than that of the host material in the light emitting layer. It emits phosphorescent light with enhanced efficiency because it comprises a light emitting layer and an electron injecting layer both satisfying specified condition and employs a light emitting layer capable of electron transporting.
Owner:IDEMITSU KOSAN CO LTD
Organic light emitting display device
ActiveUS20160285010A1Facilitates electron injectionLow working voltageSolid-state devicesSemiconductor/solid-state device manufacturingOrganic layerDisplay device
An organic light emitting display device is discussed. The organic light emitting display device in one embodiment includes at least one light emitting part between an anode and a cathode, and including at least one organic layer and a light emitting layer, wherein the organic layer includes a compound having one or more nitrogen atoms and a substituent with relatively high electron mobility.
Owner:LG DISPLAY CO LTD
Electron injection composition for light emitting element, light emitting element, and light emitting device
InactiveUS7514159B2Hard to crystallize with timeSuperior characteristicDischarge tube luminescnet screensLamp detailsPhysicsMetal
In the present invention, an electron injection composition for a light-emitting element, comprising a benzoxazole derivative represented by general formula 1 and at least one of an alkali metal, an alkali earth metal, and a transition metal, is used to form an electron injection layer in a portion of a layer including luminescent material in a light-emitting element, and it is an object of the present invention to provide, by using the composition, a light-emitting element that has more superior characteristics and a longer lifetime as compared to conventional ones.wherein Ar represents an aryl group, and each of R1 to R4 represents hydrogen, halogen, a cyano group, an alkyl group having 1 to 10 carbon atoms, a haloalkyl group having 1 to 10 carbon atoms, an alkoxyl group having 1 to 10 carbon atoms, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group.
Owner:SEMICON ENERGY LAB CO LTD
Benzene-naphthalene diimide derivative, preparation method and its application
InactiveCN101550104AGood film-forming propertiesImprove mobilityOrganic chemistryNaphthalimide/phthalimide dyesBenzeneElectron injection
The invention discloses a benzene-naphthalene diimide derivative, preparation method and its application. The benzene-naphthalene diimide derivative has the structure as shown in the right. The compound has good film-forming properties, higher mobility and fluorescent efficiency, stable narrow-band light-emitting properties, excellent electron injection and transport capacity. The preparation method uses amidation, Miyaura boric acid esterification, Suzuki coupling and other organic synthesis reactions, the preparation process is simple, and the product yield is high. The benzene-naphthalene diimide derivative can be applied in optoelectronic device fabrication.
Owner:SHENZHEN UNIV
Hybrid polymer light-emitting devices
InactiveUS7745520B2Maintain good propertiesShort response timeLayered productsSolid-state devicesPhotoelectrochemical cellLuminescent polymers
Owner:RGT UNIV OF CALIFORNIA
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