- Organic electroluminescent host material and application thereof in organic electroluminescent device
-
The invention relates to an organic electroluminescent host material. In an organic light-emitting device, in order to reduce the problems of exciton quenching, efficiency roll-off, device service life shortening and the like caused by too high exciton concentration in a light-emitting layer, a light-emitting layer structure generally adopts a host-guest doping mode. Aiming at different luminescent material systems/luminescent mechanisms, the requirements on the basic performance of the host material are different. The invention designs an organic electroluminescent host material based on a 3,3'-dicarbazole unit and a 9,9'-diphenyl fluorene steric hindrance group end capping. The dicarbazole unit endows the material with good carrier transport performance, and end group steric hindrance can effectively inhibit local aggregation of a light-emitting guest. According to different luminescent material systems, the polarity and size of molecules are adjusted by changing the difference of carbazole N-substituent (R), so that the comprehensive optimization of the device performance is realized.
- -
-
-
- COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND AN ELECTRONIC DEVICE THEREOF
-
An object of the present invention is to provide a compound capable of improving high luminous efficiency, low driving voltage and lifespan of a device, an organic electric element using the same, and an electronic device thereof. The present invention provides the compound represented by any one of chemical formulas 6 to 9. By using the compound according to the present invention, high luminous efficiency and low driving voltage of the device can be achieved, and the lifespan of the device can be greatly improved.
- -
-
Paragraph 0125-0128; 0129-0130; 0133
(2021/02/16)
-
- Method for synthesizing N-aryl carbazole compound by catalyzing reaction of carbazole with aryl hydrazine by using transition metal
-
The invention relates to a method for synthesizing an N-aryl carbazole compound by catalyzing reaction of carbazole with aryl hydrazine through transition metal. According to the method, a transitionmetal salt is used as a catalyst, a carbazole compound and an aryl hydrazine compound are used as reaction substrates, the reaction substrates and an alkali compound are added into a solvent for a reaction for a certain period of time to obtain a reaction solution, and the reaction solution is separated and purified to obtain the N-aryl carbazole compound. According to the method, low-boiling-point acetonitrile is used as a reaction solvent, so post-reaction treatment is easy to carry out; oxygen in the air serves as an oxidizing agent, so reaction conditions are environmentally friendly and safe, cost is low, and excessive oxidation is avoided; an aryl hydrazine compound is used as an arylation reagent, and reaction byproducts only comprise water and nitrogen, so the method is environment-friendly and pollution-free; the transition metal salt is used as the catalyst, the activity of the transition metal salt is high, the use of equivalent noble metals is avoided, and synthesis cost isreduced; and generally speaking, the synthesis method is friendly to environment, simple in process, good in reaction selectivity and high in yield, and has a relatively strong industrial applicationprospect.
- -
-
Paragraph 0065-0068; 0100
(2020/12/14)
-
- ORGANIC COMPOUND, ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITING DEVICE HAVING THE COMPOUND
-
The present invention refers to the highest level is calculated by calculating a smallest track occupied molecules track molecules containing molecules path energy level and high energy, low energy corresponds to the energy level path track function is an electron donor moiety containing molecules in both molecules distributed subbands cells with an organic compound, an organic compound applied to the organic light-emitting diodes and organic light-emitting device of the whole structure are disclosed. They are out of charge-transporting organic compounds of the present invention, distributed in charge injection delay caused a rise in drive voltage can be prevent, with an adjacent layer interface region in emission since before al but capable, can be semiconductor layer on the organic layer. (by machine translation)
- -
-
-
- ORGANIC MIXTURE, COMPOSITION, AND ORGANIC ELECTRONIC COMPONENT
-
Disclosed in the present application is an organic mixture. The organic mixture comprises two organic compounds H1 and H2. The organic compound H1 has electron transmission performance, and the organic compound H1 satisfies: Δ((LUMO+1)?LUMO)≥0.1 eV, and min((LUMO(H1)?HOMO(H2), LUMO(H2)?HOMO(H1))≤min(ET(H1), ET(H2)). The organic compound H1 and the organic compound H2 are easy to form exciplexes and have balanced electron transmission properties, the organic compound Hi has high stability of electron transmission, and accordingly the efficiency and the service life of related electronic components can be effectively improved, and a feasible solution for improving overall performance of the electronic components is provided.
- -
-
-
- ORGANIC COMPOUND, AND ORGANIC LIGHT EMITTING DIODE AND ORGANIC LIGHT EMITTING DISPLAY DEVICE INCLUDING THE SAME
-
The present invention provides an organic compound for an organic light emitting diode. An example of the organic compound is represented by:
- -
-
-
- ORGANIC COMPOUNDS AND LITHT EMITTING DIODE AND ORGANIC LIGHT EMITTIG DIODE DISPLAY DEVICE USING THE COMPOUNDS
-
The present invention relates to a carbazole moiety with an indolo condensation structure, an organic compound in which a hetero condensation ring having a conjugated structure is connected to an indolo carbazole moiety and, as necessary, a different hetero ring is connected to a hetero condensation ring moiety; and to a light emitting diode and an organic light emitting diode using the organic compound. The organic compound of the present invention has excellent thermal stability and color purity. Also, since the organic compound has excellent hole transporting characteristics and/or electron transporting characteristics, a driving voltage rise which may be caused by a delay of charging electrons in a light emitting diode can be prevented. Also, when the organic compound of the present invention is applied, electrons can be charged in balance in an organic material layer constituting the light emitting diode. Light emitting efficiency and a life span of an element can be improved, because light emitting can be induced in not only an interfacial area with an adjacent layer but also all areas of the organic material layer. Since a relatively broad band gap is contained in the organic compound of the present invention, the organic compound can be utilized as a host of the organic layer in the light emitting diode.(110) First electrode(120) Second electrodeCOPYRIGHT KIPO 2018
- -
-
Paragraph 0182; 0187-0190
(2018/04/12)
-
- ORGANIC OPTOELECTRIC DEVICE AND DISPLAY DEVICE
-
An organic optoelectric device includes an anode and a cathode facing each other, an emission layer between the anode and the cathode, a hole transport layer between the anode and the emission layer, a hole transport auxiliary layer between the hole transport layer and the emission layer, an electron transport layer between the cathode and the emission layer, and an electron transport auxiliary layer between the electron transport layer and the emission layer, wherein the electron transport auxiliary layer includes a first compound represented by the following Chemical Formula 1, and the hole transport auxiliary layer includes a second compound represented by the following Chemical Formula 2: ?? [Chemical Formula 1] ?????[Chemical Formula 2]A display device including the organic optoelectric device is provided.
- -
-
Paragraph 0157; 0128
(2017/12/01)
-
- COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND AN ELECTRONIC DEVICE THEREOF
-
The purpose of the present invention is to provide a compound which is capable of having high light-emitting efficiency of an element, having a low driving voltage, and improving durability; an organic electronic element using the same; and an electronic device thereof. The compound is represented by chemical formula 1.(110) Substrate(120) Positive electrode(130) Hole injection layer(140) Hole transport layer(141) Buffer layer(150) Light emitting layer(151) Light-emitting assisting layer(160) Electron transport layer(170) Electron injection layer(180) Negative electrodeCOPYRIGHT KIPO 2016
- -
-
Paragraph 0128; 0129; 0130
(2016/10/07)
-
- COMPOSITION FOR ORGANIC OPTOELECTRIC DEVICE AND ORGANIC OPTOELECTRIC DEVICE AND DISPLAY DEVICE
-
The present invention relates to: a composition for an organic photoelectric device, which comprises a first host compound represented by the chemical formula I and a second host compound represented by the chemical formula II; an organic photoelectric device including the composition for an organic photoelectric device; and a display device. In the chemical formula I and II, Z, R^1 to R^3, L^1 to L^3, R^4 to R^19, and n are the same as defined in the specification.COPYRIGHT KIPO 2016
- -
-
Paragraph 0404 - 0408
(2016/10/07)
-
- MATERIALS FOR ELECTRONIC DEVICES
-
The present application relates to a compound of a formula (I) which contains an indenocarbazole group, a carbazole group and an electron-deficient group bonded to the indenocarbazole group. The compound is suitable for use in electronic devices, in parti
- -
-
Paragraph 0228; 0229-0231
(2016/10/10)
-
- COMPOUND FOR ORGANIC ELECTRONIC ELEMENT, ORGANIC ELECTRONIC ELEMENT USING THE SAME, AND AN ELECTRONIC DEVICE THEREOF
-
The present invention provides a novel compound which can improve light emitting efficiency, stability, and life of an element, an organic electronic element, and an electronic device thereof. The organic electronic element comprises: a first electrode; a second electrode; and an organic layer located between the first electrode and the second electrode, wherein the compound is included in the organic layer.(110) Substrate(120) Positive electrode(130) Hole injection layer(140) Hole transport layer(141) Buffer layer(150) Light emitting layer(151) Light emitting assisting layer(160) Electron transport layer(170) Electron injection layer(180) Negative electrodeCOPYRIGHT KIPO 2015
- -
-
Paragraph 0109; 0110; 0111
(2016/10/08)
-