45results about How to "Lighting up voltage drop" patented technology

The invention discloses a luminescent material of a series of fluorene derivatives. A structure of the material is as shown in formula I. The material as shown in formula I is easily dissolved in an organic solvent, is good in heat stability and can be used to prepare a luminescent device in a way of fluid manufacturing procedures such as printing, instilling, coating and printing. An organic electroluminescent device prepared by coating the material has the characteristics that the power efficiency is good, the material utilization rate is high, the manufacturing cost of an OLED device is greatly decreased, and the material synthesis and purification method is simply suitable for mass production, so that the luminescent material is an ideal choice of the organic electroluminescent device luminescent material. Utilizing the organic electroluminescent diode material as a main body material or a doping material in a luminescent layer or independently as a luminescent material or a hole transmission material or an electron transmission material also falls within a protection scope (see the specification).

The invention relates to a method for preparing 9,9-bis(trianilino) fluorene derivatives and their use. The derivatives can be prepared by Suzuki coupling of dihalogenated 9,9-bis(trianilino) fluorene and aromatic ring or heterocyclo-boric acid or its ester. And the derivatives can be used as auxiliary hole transportation materials of organic light emitting diode and can reduce the starting voltage of device.

The invention discloses an organic LED by adopting doped metallic oxide as a hole injection structure, which comprises a transparent anode, an organic hole injection layer, an organic hole transmission layer, an organic luminescent layer, an organic electronic transmission layer and a cathode; wherein the organic hole injection layer is deposited on the transparent anode and the area of the organic hole injection layer is smaller than that of the transparent anode; the organic hole injection transmission layer is deposited on the organic hole injection layer; the organic luminescent layer is deposited on the organic hole injection transmission layer; the electronic transmission layer is deposited on the organic luminescent layer; the cathode is deposited on the organic electronic transmission layer and the area of the cathode is smaller than that of the organic electronic transmission layer.

The present invention relates to a kind of organic electroluminescent material bis(8-hydroxy quinoline lithium sodium), which is prepared with 8-hydroxy quinoline, lithium hydroxide and sodium hydroxide as materials, acetone and deionized water as solvent, and nitrogen as protecting gas, and through the steps of compounding solution, synthesis reaction, washing and filtering, re-crystallization to purify, vacuum stoving and final vacuum sublimation to purify to obtain blue light emitting high purity bis(8-hydroxy quinoline lithium sodium) powder. Owing to sodium ion for emitting light and electron injection, the bis (8-hydroxy quinoline lithium sodium) material is superior to 8-hydroxy quinoline lithium and has the features of good filming performance, long fluorescence life, high color purity, high light emitting efficiency, etc. The present invention may be used widely in electronic information display and lighting technology.

The invention discloses a double color core containing white light hyperbranched conjugated polymer prepared based on a red, green and blue tri-phosphor principle. Green and red phosphorescence Ir (III) complexes are taken as cores of a hyperbranched structure, and a polyfluorene derivative blue fluorescent material is taken as a skeleton of the hyperbranched structure, and through regulating the contents of the green and red phosphorescence Ir (III) complexes, a hyperbranched conjugated polymer which can achieve white light emission is obtained. The electroluminescent spectrum of the conjugated polymer disclosed by the invention has high color saturation, and is close to that of pure white light emission; and the conjugated polymer has good electroluminescent properties, and can be used as a light-emitting material for preparing white-light organic electroluminescent devices with single light-emitting layers.

The invention provides a metal aluminium complex with the structural formula shown as a formula (I). In the formula (I), Q has a structural formula selected from a formula (Q1) or a formula (Q2); R1 is methyl, R2-R6 are independently selected from hydrogen, methyl and cyan; L has a structural formula shown as a formula (IV); R7-R11 are independently selected from hydrogen, phenyl, pyridyl, pyrimidinyl, C6-C30 substituted or unsubstituted aromatic rings and C6-C30 nitrogen-containing heteroaromatic rings. The invention also provides an organic luminescent device containing the metal aluminium complex. The metal aluminium complex is high in electro mobility, and is applicable to OLED devices as a luminescent-layer main material, a cavity barrier-layer material or an electron transfer layer, so that the multi-functionalization of a single material is realized, also the structure of the device is simplified, and high efficiency and low voltage of the device are realized.

The invention discloses an organic small molecular photoelectric functional material adopting 3-benzoylpyridine as a receptor unit, which mainly depends on hydrogen-bond interaction of nitrogen in benzoylpyridine, can effectively avoid the deficiency of low radiation rate caused by large torsion angle, thereby improving the horizontal molecular orientation, and realizing the structure simplification of devices and performance of the devices and prolonging the service life. By controlling the type and size of a donor connecting unit, the intrinsic characteristics of the material such as a molecular weight, a conjugated length, charge transfer and the like can be effectively adjusted. The invention also discloses a preparation method and application of the organic small molecular photoelectric functional material. The organic small molecular photoelectric functional material adopting 3-benzoylpyridine as the receptor unit has the advantages that the radiation rate coefficient is high, the quantum efficiency is high, the current carrier transport performance is high, the color is adjustable when being used as a luminescent layer of an organic electroluminescent device, high efficiencyand stability can be realized, the service life is long, and the like.

The invention provides an organometallic complex and an organic photoelectric element containing the same, in particular an organic electroluminescent diode, the structure of the organometallic complex is shown as a formula (I) in the specification, wherein M is selected from one of nickel (Ni), copper (Cu), cobalt (Co), manganese (Mn) or lead (Pb); detailed information of the organometallic complex and the organic photoelectric element can be understood through the specific description provided by the invention. According to the organic metal compound disclosed by the invention, an OLED device with high efficiency and long service life can be obtained, the luminescent spectrum is between 490 nanometers and 750 nanometers, and the organic metal compound shows potential application on green to red OLEDs. Meanwhile, nickel (Ni), copper (Cu), cobalt (Co), manganese (Mn) or lead (Pb) and other metals are low in price and rich in earth crust, have the potential of replacing platinum, iridium, palladium and other precious metal organometallic complexes, and have good commercial application prospects.

The invention belongs to the field of organic electroluminescence, and particularly relates to an iridium metal compound with a deuterium-fluorine synergistic effect and a photoelectric device containing the iridium metal compound. The structure of the iridium metal compound is shown as a structural formula I, R1 to R17 are partially or completely deuterated substituents, and at least one of R1, R2, R3, R6, R7, R8, R10, R11, R12, R14, R15 and R16 is a fluorine atom. The iridium metal compound has better thermal stability and lower evaporation temperature, and the energy transmission efficiency between a main body material and an iridium metal complex is remarkably improved, specifically, when the iridium metal compound is used as a light-emitting layer material of an organic light-emitting device, the current efficiency of the light-emitting device is improved, the driving voltage is reduced, the service life is obviously prolonged, and a good commercial prospect is achieved.

The invention belongs to the field of organic photoelectricity, and particularly relates to an iridium metal complex and an organic photoelectric element using the iridium metal complex, in particular to an organic light-emitting diode. The structure of the iridium metal complex is shown as a formula (I) in the specification, wherein (L^Z) is selected from astructural formula represented by A, and the formula (I) of the iridium metal complex and the organic optoelectronic element may be understood by referring to the specific description provided herein. The iridium metal complex disclosed by the invention is applied to a light-emitting layer of the organic light-emitting diode, so that the current efficiency of a light-emitting element is improved, the driving voltage is reduced, the service life is obviously prolonged, and the iridium metal complex has a very good commercialization prospect.

The invention provides an organometallic complex. The structure of the organometallic complex is shown as a formula I. An organic optoelectronic device comprising the organometallic complex has good luminous efficiency, reduced driving voltage and prolonged service life.

The invention provides an organometallic complex and an organic photoelectric element comprising the same, and particularly relates to an organic electroluminescent diode. The structure of the organometallic complex is as shown in formula (I) which is described in the specification. In the formula (I), M is selected from platinum (Pt) and palladium (Pd). The detailed information of the organometallic complex and the organic photoelectric element can be understood through specific description in the invention. According to the organometallic complex provided by the invention, an OLED device with high efficiency and long service life can be obtained, and a luminescent spectrum is between 490 nanometers and 750 nanometers, which indicate that the organometallic complex shows application potential in the field of green-light to red-light OLEDs. The platinum and palladium metals are rich in the earth crust, can replace the rare metal iridium to form the sustainable organometallic complex, and good commercial application prospects are obtained.

The invention provides an organometallic complex and an organic photoelectric element containing the same, and particularly relates to an organic electroluminescent diode. The structure of the organometallic complex is as shown in formula (I) which is described in the specification. In the formula (I), M is selected from platinum (Pt) and palladium (Pd). The detailed information of the organometallic complex and the organic photoelectric element can be understood through specific description in the invention. According to the organometallic complex provided by the invention, an OLED device with high efficiency and long service life can be obtained, and a luminescent spectrum is between 490 nanometers and 750 nanometers, which indicate that the organometallic complex shows application potential in the field of green-light to red-light OLEDs. The platinum and palladium metals are rich in the earth crust, can replace the rare metal iridium to form the sustainable organometallic complex, and good commercial application prospects are obtained.

The invention discloses a multi-resonance type thermally activated delayed fluorescence material with a spatial three-dimensional structure, an electronic device and application of the multi-resonance type thermally activated delayed fluorescence material. The material has one of the structural general formulas shown in specification, wherein at least one of R1-R5 is one of the structures shown in specification. The three-dimensional rigid structure can inhibit the aggregation of molecules and avoid the aggregation-induced fluorescence quenching effect caused by intermolecular accumulation of the multi-resonance type thermally activated delayed fluorescence material, thereby improving the efficiency of the device. The peripheral unit of the three-dimensional structure is also beneficial to improving the solubility and the thermal stability of the thermally activated delayed fluorescence material, so that the service life of the device can be effectively prolonged.

The present invention provides an organic electroluminescent device comprising a cathode, an anode and an organic thin film layer, and at least one layer of the organic thin film layer comprises a compound represented by the following formula (1) shown in the description, either as a single or as a mixture component. In the formula (1), X is selected from a nitrogen atom or a carbon atom bonded toR1, and C1 to C5 are independently selected from R2-bonded carbon atoms, R1 and R2 are each independently selected from a hydrogen atom, a cyano group, a linear alkyl group or a fluoroalkyl group having 1 to 20 carbon atoms, branched or cyclic alkyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 carbon atoms, a substituted or unsubstituted heteroaromatic hydrocarbon group having 5 to 30 carbon atoms. The present invention also provides a novel compound selected from the above formula (1). The electrical properties of the organic electroluminescent device of the present invention are very good, and the compound of the formula of the present invention can be used as a luminescent material with excellent stability.