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49results about How to "Widen the compound area" patented technology

Fused ring compound as well as preparation method and application thereof

The invention discloses a fused ring compound comprising a structure shown as a formula (I) or (II). According to the fused ring compound, by controlling effective conjugation of aromatic rings and heterocyclic rings, the electron transport performance is balanced while the hole performance is improved. The compound has high triplet state energy level and glass transition temperature, is difficultin crystallization of material molecules, and is capable of ensuring high-efficiency transfer of energy to a guest material while serving as a host material of a luminous layer. The substituent groupof the fused ring compound is adjusted, the electron and hole transport performances are further improved, the singlet state and triplet state energy level difference is reduced, the compound area ofthe carrier is widened, and triplet state exciton annihilation is avoided. The invention further discloses an organic electroluminescence device. At least one functional layer contains the fused ringcompound, and the fused ring compound serves as the host material of the luminous layer and is matched with the energy level of an adjacent carrier transport layer. The luminous efficiency of the device is improved, and the driving voltage of the device is reduced.
Owner:NINGBO LUMILAN NEW MATERIAL CO LTD

Fused ring compound as well as preparation method and purpose thereof

The invention discloses a fused ring compound, which has a structure shown as a formula (I) or a formula (II). The effective conjugation of aromatic rings and heterocyclic rings is controlled in the fused ring compound; the hole performance is improved; meanwhile, the electronic transmission performance is favorably balanced; the compound has high triplet state energy level and glass transition temperature; material molecules cannot easily crystallize; when the fused ring compound is used as a luminescent layer host material, the efficient transfer of energy to guest materials can be guaranteed. The substituent group of the fused ring compound is regulated, so that the electron and hole transmission performance is further improved; the singlet state and triplet state energy level difference is reduced; the compound region of carriers is expanded; the triplet state exciton annihilation is prevented. The invention also discloses an organic electroluminescence device; at least one function layer contains the fused ring compound; the fused ring compound is used as the host material of the luminescent layer and is matched with the adjacent carrier transmission layer energy level; the luminous efficiency of the device is improved; meanwhile, the driving voltage of the device is reduced.
Owner:NINGBO LUMILAN NEW MATERIAL CO LTD

Low-voltage organic electroluminescent blue light emitting device and preparation method thereof

The invention discloses a low-voltage organic electroluminescent blue light emitting device. The low-voltage organic electroluminescent blue light emitting device is composed of an ITO transparent substrate, a p-type doping injection layer, a hole transport layer, a luminescent layer with the hole transport characteristic, a hole diffusion layer, an electronic transport layer, an electronic buffer layer and a metal back electrode in a stacked mode. The luminescent layer with the hole transport characteristic is made of blue light emitting materials. The hole diffusion layer is made of organic semiconductor materials with the bipolar transport characteristic. The HOMO energy level of the hole diffusion layer is between the HOMO energy level of the luminescent layer and the HOMO energy level of the electronic transport layer. A photoluminescent spectrum of the hole diffusion layer and an absorption spectrum of the luminescent layer overlap. The low-voltage organic electroluminescent blue light emitting device has the advantages that the p-type doping injection layer and the hole diffusion layer are arranged in the device, so that the injection capability of holes is improved; meanwhile, cancellation, caused by accumulation of a large number of holes, of excitons in the luminescent layer is avoided, and efficient luminescence of the device at a low voltage is realized; the device has the advantages of low driving voltage, high brightness, high efficiency, good stability and simple preparation processes.
Owner:TIANJIN UNIVERSITY OF TECHNOLOGY

Organic electroluminescent device and display device

The invention provides an organic electroluminescent device and a display device. The organic light-emitting device comprises a first light-emitting layer and a second light-emitting layer, wherein the material of the first light-emitting layer comprises a first main body material, a first sensitizer and a first dye, and the material of the second light-emitting layer comprises a second main bodymaterial, a third main body material, a second sensitizer and a second dye; the first main body material can form an exciplex with the second main body material or the third main body material, and the second main body material can form an exciplex with the third main body material; the first sensitizer and the second sensitizer are both thermally activated delayed fluorescent materials; the firstdye and the second dye are both resonance type thermal activation delayed fluorescence materials. According to the light-emitting layer of the organic light-emitting device provided by the invention,the interface exciplex and the bulk phase exciplex are used as main body materials, and the TADF material is used as a sensitizer to sensitize the resonant TADF material, so that the efficiency roll-off is remarkably reduced, and the device efficiency and stability are remarkably improved.
Owner:YUNGU GUAN TECH CO LTD

Iridium complex taking thiobis diaryl/aromatic heterophosphamide compound as auxiliary ligand

The invention relates to a novel iridium complex taking heterocyclic nitrogen as a main ligand and taking a thiobis diaryl / aromatic heterophosphamide compound as an auxiliary ligand. The heterocyclicnitrogen and phosphorus-sulfur groups in iridium complex molecules are helpful for increasing the electron mobility of a material and regulating the luminescence color, injection and transmission of cavity and electrons can be balanced, a composite area of a carrier is widened, the equipment efficiency is increased, and the efficiency roll-off is reduced. The iridium complex has the advantages ofsimple synthesis, stable chemical properties, easy sublimation purification, and excellent equipment performance, and provides convenience for acquiring a high-efficiency organic electroluminescent device and an application of the high-efficiency organic electroluminescent device in the fields of illumination and display.
Owner:马鞍山南京大学高新技术研究院 +1

Organic electroluminescent material and device

The invention provides an organic compound with a specific structure. The organic compound is characterized by being shown as a general formula (I): the formula (I) is shown in the description; in theformula (I), X1 to X8 are respectively independently selected from CR1 or N respectively, wherein at least one is an N atom; L is a single bond and is C5 to C12 substituted or unsubstituted arylene and heteroarylene; R1 is selected from hydrogen, C1 to C10 aryl or cycloalkyl, C6 to C15 aryl or C6 to C19 condensed ring aryl and at least one is azacarbazole; Ar is substituted or unsubstituted N heterophenyl. The invention discloses an inverse intersystem crossing constant and emission delayed fluorescence rule and the designed compound is used for an organic electroluminescent device, can be used for effectively improving the current efficiency and is an organic electroluminescent material with good performance. The invention also provides the organic electroluminescent device adopting thecompound shown as the general formula.
Owner:BEIJING ETERNAL MATERIAL TECH +1

Fused ring compound as well as preparation method and application thereof

The invention discloses a fused ring compound. The fused ring compound has the structure as shown in a formula (I) or a formula (II). The fused ring compound is favorable for balancing electronic transmission property while improving the cavitation performance by controlling effective conjugation of an aromatic ring and a heterocyclic ring; and the compound has high three linear energy level and vitreous transition temperature, the material molecules are not liable to crystallization, and the compound serving as a main body material of a light-emitting layer can guarantee that the energy is efficiently transmitted to an object material. The substituent group of the fusing ring compound is adjusted, so that the transmission performance of electrons and cavities is further improved, single linear and three linear energy level difference is reduced, the composite area of a current carrier is widened and three linear exciton annihilation is avoided. The invention also discloses an organicelectroluminescence device; at least one functional layer comprises the fused ring compound; the fused ring compound serves as the main body material of the light-emitting layer and is matched with the energy level of the adjacent current carrier transmission layer; and the driving voltage of the device is reduced while the light-emitting efficiency of the device is improved.
Owner:NINGBO LUMILAN NEW MATERIAL CO LTD

Single-layer-structure inverted top-emission OLED (Organic Light Emitting Device)

The invention discloses a single-layer-structure inverted top-emission OLED (Organic Light Emitting Device), and belongs to the technical field of organic optoelectronic devices. The inverted top-emission OLED with the structure disclosed by the invention comprises a substrate, a cathode, a single-layer organic function layer and a transparent anode in sequence. The single-layer organic function layer is formed by doping two organic dyes into a single matrix material in a dopant mode, wherein the matrix material adopts an organic material with higher electron mobility, and the two organic dyes performs respective functions, namely, one organic dye is used for capturing holes, and the other organic dye is used for emitting light. According to the device with the structure disclosed by the invention, an exciton compound area is enlarged, the balance of electrons and holes in the single-layer organic function layer is favorably realized, and the device has the advantages of high efficiency, low efficiency roll-off, stability of light-emitting optical spectrum, and the like.
Owner:JILIN UNIV

1,2,4-Triazole acceptor-based thermally activated delayed fluorescence material

InactiveCN106939000AGood electronic propertiesGood electron-absorbing propertiesOrganic chemistrySolid-state devicesFluorescenceTriazole derivatives
The invention discloses a 1,2,4-riazole acceptor-based thermally activated delayed fluorescence material with the structure represented by general formula (I) and capable of realizing dark blue lights. The material is formed through connecting the para-position of 3-substituted phenyl group of a 1,2,4-triazole derivative used as an acceptor unit with an N-containing donor unit. The thermally activated delayed fluorescence material has small singlet-triplet energy level difference, can meet requirements of the thermally activated delayed fluorescence material, allows a dark blue fluorescence material to be obtained, and improves the luminous efficiency of TADF type OLED devices.
Owner:TAIYUAN UNIV OF TECH

Organic electroluminescent device and preparation method thereof

The invention provides an organic electroluminescent device which comprises a substrate, an anode, a hole transmitting layer, an electron blocking layer, a light emitting layer, a hole blocking layer, an electron transmitting layer and a cathode, wherein the substrate, the anode, the hole transmitting layer, the electron blocking layer, the light emitting layer, the hole blocking layer, the electron transmitting layer and the cathode are sequentially stacked. The light emitting layer comprises a red and green mixed light emitting layer, an exciton blocking layer, a yellow light emitting layer and a blue light emitting layer, wherein the red and green mixed light emitting layer, the exciton blocking layer, the yellow light emitting layer and the blue light emitting layer are sequentially stacked on the electron blocking layer. The light emitting layer is a compound layer structure which is formed by sequentially stacking the red and green mixed light emitting layer, the exciton blocking layer, the yellow light emitting layer and the blue light emitting layer. The red and green mixed light emitting layer can expand an exciton composite region. The exciton blocking layer can control and regulate the energy transfer between a blue light and a green light. The combination of the red and green mixed light emitting layer, the yellow light emitting layer and the blue light emitting layer can acquire abundant spectra. The color rendering index of the organic electroluminescent device is high. The invention further provides a preparation method of the organic electroluminescent device.
Owner:OCEANS KING LIGHTING SCI&TECH CO LTD +2

Novel iridium complex with thiocarboxylic acid compound as auxiliary ligand

The invention relates to a novel iridium complex with a nitrogen heterocyclic ring as a main ligand and a thiocarboxylic acid compound as an auxiliary ligand. The nitrogen heterocyclic ring and a carbon-sulfur group in an iridium complex molecule help to improve the electron mobility of the material and control a luminescence color, so the injection and transmission of holes and electrons are balanced, the current carrier recombination region is broadened, the device efficiency is improved and the efficiency roll-off is reduced. The iridium complex has the advantages of simple synthesis, stable chemical property, easy sublimation and purification, and excellent device performance, and provides convenience for the acquisition of high-efficiency organic electroluminescent devices and application in the technical fields of lighting and display.
Owner:马鞍山南京大学高新技术研究院 +1

Iridium complex taking dithiolyl ring/aromatic heterocyclic phosphate compound as auxiliary ligand

The invention relates to a novel iridium complex taking heterocyclic nitrogen as a main ligand and taking a dithiolyl ring / aromatic heterocyclic phosphate compound as an auxiliary ligand. The heterocyclic nitrogen and phosphorus-sulfur groups in iridium complex molecules are helpful for increasing the electron mobility of a material and regulating the luminescence color, injection and transmissionof cavity and electrons can be balanced, a composite area of a carrier is widened, the equipment efficiency is increased, and the efficiency roll-off is reduced. The iridium complex has the advantages of simple synthesis, stable chemical properties, easy sublimation purification, and excellent equipment performance, and provides convenience for acquiring a high-efficiency organic electroluminescent device and an application of the high-efficiency organic electroluminescent device in the fields of illumination and display.
Owner:马鞍山南京大学高新技术研究院 +1

Dibenzo-heterocyclic compound and preparation method and applications thereof

The invention discloses a dibenzo-heterocyclic compound, which has a structure represented by the formula (I). The LUMO energy level of the dibenzo-heterocyclic compound is low, the dibenzo-heterocyclic compound can be well matched with an electron transport material, and the electron injection and transportation are promoted. The dibenzo-heterocyclic compound has a good hole transport performance, is capable of balancing the ratio of electrons / holes in a luminous layer when being used as a luminous layer material, increases the compounding probability, and improves the luminous efficiency. Due to the spatial configuration of the dibenzo-heterocyclic compound, molecule stacking is avoided, the generation of high energy exciton generated by energy transmission between molecules is prevented, annihilation of exciton is inhibited, and the roll-off is inhibited. At the same time, the dibenzo-heterocyclic compound has good thermal stability and is capable of efficiently and stably emittingblue light. The invention also discloses an organic electroluminescent device, at least one functional layer of the device comprises the dibenzo-heterocyclic compound, and the blue light device has the advantages of high blue light luminous efficiency and low work voltage.
Owner:NINGBO LUMILAN NEW MATERIAL CO LTD +1

Iridium complex taking sulfo aromatic ring/aromatic heterocyclic phosphate compound as auxiliary ligand

The invention relates to a novel iridium complex taking heterocyclic nitrogen as a main ligand and taking a sulfo aromatic ring / aromatic heterocyclic phosphate compound as an auxiliary ligand. The heterocyclic nitrogen and phosphorus-sulfur groups in iridium complex molecules are helpful for increasing the electron mobility of a material and regulating the luminescence color, injection and transmission of cavity and electrons can be balanced, a composite area of a carrier is widened, the equipment efficiency is increased, and the efficiency roll-off is reduced. The iridium complex has the advantages of simple synthesis, stable chemical properties, easy sublimation purification, and excellent equipment performance, and provides convenience for acquiring a high-efficiency organic electroluminescent device and an application of the high-efficiency organic electroluminescent device in the fields of illumination and display.
Owner:马鞍山南京大学高新技术研究院 +1

Organic electroluminescent material, electronic element, and electronic device

The invention belongs to the technical field of organic materials, and provides a nitrogen-containing compound, an organic electroluminescent device and an electronic device. The structure of the nitrogen-containing compound is shown as a chemical formula I defined in the description.
Owner:SHAANXI LIGHTE OPTOELECTRONICS MATERIAL CO LTD

Organic electroluminescence device

The invention relates to an organic electroluminescence device, in particular to a luminous layer structure of an organic white light emitting device. In the invention, in order to obtain a device with high efficiency, long service life and good color compatibility, particularly a white device, a compound luminous layer structure is adopted, and two different dyes are respectively doped; and the color of the device can be easily adjusted by adjusting the doping concentration of one dye so as to meet different color requirements, which is especially important for the white device.
Owner:KUNSHAN VISIONOX DISPLAY TECH +2

Imidazole substituted spirofluorene compound and applications thereof

The invention discloses an imidazole substituted spirofluorene compound and applications thereof, and discloses a compound represented by the following general formula defined in the specification, wherein X<1>-X<4> are selected from CR4 or N, R<4> is selected from hydrogen, C1-C10 alkyl, substituted or unsubstituted C6-C15 aryl and substituted or unsubstituted C3-C15 heteroaryl, R<1>-R<3> are selected from hydrogen, C1-C10 alkyl, substituted or unsubstituted C6-C15 aryl and substituted or unsubstituted C3-C15 heteroaryl, R<1>-R<3> are respectively and independently fused to a linked benzene ring to form C9-C30 aryl or heteroaryl, m and n are integers of 0-4, p is an integer of 0-3, L<1> and L<2> are selected from single bonds, substituted or unsubstituted C6-C30 arylene and substituted orunsubstituted C3-C30 heteroarylene, and Ar<1> and Ar<2> are selected from hydrogen, substituted or unsubstituted C6-C30 aryl and substituted or unsubstituted C3-C30 heteroaryl. According to the invention, with the application of the imidazole substituted spirofluorene compound as the luminescent material in an OLED device or an electron transport material, the compound shows excellent device performance and excellent stability. The invention further discloses an organic light-emitting device adopting the compound with the general formula.
Owner:BEIJING ETERNAL MATERIAL TECH

Organic compound, electronic device comprising same, and electronic apparatus

The invention relates to an organic compound, an electronic device comprising the same, and an electronic apparatus comprising the electronic device. The structural formula of the organic compound is shown as a chemical formula 1, and the organic compound is applied to the electronic device and can remarkably improve the performance of the electronic device.
Owner:SHAANXI LIGHTE OPTOELECTRONICS MATERIAL CO LTD

Nitrogen-containing compound, and electronic component and electronic device comprising same

The invention relates to a nitrogen-containing compound, and an electronic component and an electronic device comprising the same. The nitrogen-containing compound disclosed by the invention contains indolocarbazole, oxadiazole (thiadiazole) and a triazine group. The compound disclosed by the invention has relatively high electron mobility; and meanwhile, the compound has excellent hole transport performance. When the nitrogen-containing compound is used as a main body material, the balance of holes and electrons in an organic light-emitting layer can be improved, and the performance of a device can be remarkably improved.
Owner:SHAANXI LTMS OPTOELECTRONICS MATERIAL CO LTD

OLED device structure

The invention relates to an OLED device structure, and particularly relates to an optimization scheme of the doping proportion of a light-emitting layer of a phosphorescent doped organic light-emitting material device. The host-guest material of the light-emitting layer is unchanged, the doping ratio of the light-emitting layer is converted from single-layer doping to multi-layer echelon concentration doping, a material device is prepared through a vacuum evaporation method and can be applied to a novel flat panel display technology, and the device using the OLED device structure has good electroluminescent performance.
Owner:GUANGDONG AGLAIA OPTOELECTRONICS MATERIALS

Deep ultraviolet AlGaN-based light emitting diode with coupled quantum well structure

ActiveCN112951957AReduce Auger Recombination RateIncreased total spontaneous emission recombination rateSemiconductor devicesChemistryMultiple quantum
The invention discloses a deep ultraviolet AlGaN-based light emitting diode with a coupled quantum well structure. The deep ultraviolet AlGaN-based light emitting diode at least comprises an n-type semiconductor layer, a multi-quantum well structure and a p-type semiconductor layer, wherein the multi-quantum well structure is formed by periodically overlapping a barrier layer and a coupled AlGaN well layer, and the deep ultraviolet AlGaN-based light emitting diode is characterized in that the coupled AlGaN well layer at least comprises a three-layer structure, namely an Al<x>Ga<1-x>N well layer, an Al<y>Ga<1-y>N isolation layer and an Al<x>Ga<1-x>N well layer from bottom to top in sequence. Through the structural design of the coupling well layer, the spontaneous radiation recombination rate of a TE / TM mode of a c-surface LED is enhanced, the internal quantum efficiency of an LED device is improved, and the efficiency reduction effect of a nitride LED device is inhibited, so that the optical performance of the deep ultraviolet nitride light-emitting diode is improved.
Owner:江苏第三代半导体研究院有限公司

An organic electroluminescent device

In the organic electroluminescent device described in the present invention, the first light-emitting layer is a single hole-type host material doped guest dye layer, and the second light-emitting layer is an electron-type host material doped guest dye layer; since the first light-emitting layer and the second light-emitting layer The carrier transport characteristics of the host materials in the two light-emitting layers are different, so that the final electrons and holes recombine between the interface of the first light-emitting layer and the second light-emitting layer to form excitons and emit light, so that the position of the light-emitting center can be adjusted. Therefore, the adjustment of the viewing angle of the organic light-emitting display device is realized. Although the final recombination center of electrons and holes is located at the interface between the first light-emitting layer and the second light-emitting layer, the second light-emitting layer also satisfies the recombination conditions of electrons and holes, so that the recombination region extends into the second light-emitting layer, which is The width of the recombination region of electrons and holes is increased, effectively prolonging the service life of the organic electroluminescence device.
Owner:KUNSHAN NEW FLAT PANEL DISPLAY TECH CENT +1

Compound taking xanthone-linked dibenzofuran as core and application thereof

The invention discloses a compound taking xanthone-linked dibenzofuran as a core. The structure of the compound is shown in a general formula (1) which is described in the specification. The compound contains a xanthone-linked dibenzofuran parent nucleus and a rigid branched chain structure, has relatively high glass transition temperature and molecular thermal stability, proper HOMO, LUMO energy levels and T1 energy level, high chemical bond energy and high carrier mobility, can effectively improve the efficiency of an OLED device through device structure optimization, and especially can reduce the voltage of the OLED device and prolong the service life of the OLED device.
Owner:JIANGSU SUNERA TECH CO LTD
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