154results about How to "Reduce energy level difference" patented technology

The invention discloses a compound with anthrone as a core and a use thereof. According to the compound, anthrone is a mother nucleus and is connected to an aromatic heterocyclic group so that molecular symmetry is destroyed, molecule crystallinity is destroyed, intermolecular aggregation is avoided and good film-forming performances are obtained. The compound as a light-emitting layer material is used for an organic light-emitting diode. An OLED device prepared from the compound has good photoelectric properties and can satisfy the requirements of the panel manufacturing companies.

The invention discloses a five-membered ring substituted compound with xanthone as a core and a use thereof. According to the compound, xanthone is a mother nucleus and is connected to an aromatic heterocyclic group so that molecular symmetry is destroyed, molecule crystallinity is destroyed, intermolecular aggregation is avoided and good film-forming performances are obtained. The compound as a light-emitting layer material is used for an organic light-emitting diode. An OLED device prepared from the compound has good photoelectric properties and can satisfy the requirements of the panel manufacturing companies.

The invention discloses a compound taking triazine as a core and an application of the compound on an organic electroluminescent device. The compound takes triazine as the core, which has the characteristics of difficult crystallization among molecules, difficult aggregation and good film forming ability. When the compound is taken as a luminescent layer main material of the organic electroluminescent device for usage, current efficiency, power efficiency and external quantum efficiency of the device are greatly improved; at the same time, the device life can be obviously increased.

The invention discloses an inversed organic thin-film solar cell and a manufacturing method of the inversed organic thin-film solar cell. The inversed organic thin-film solar cell structurally and sequentially comprises a substrate, a transparent electric conduction cathode ITO, a cathode buffer layer, an optical activity layer, an anode buffer layer and a metallic cathode from bottom top top. Transparent electric conduction nano-particles are added in the anode buffer layer. The manufacturing method includes the steps of forming a substrate body through the substrate and the transparent electric conduction cathode ITO, washing and drying the base plate, manufacturing the cathode buffer layer on the surface of the transparent electric conduction cathode ITO, manufacturing and baking the optical activity layer on the surface of the cathode buffer layer, manufacturing the anode buffer layer on the surface of the optical activity layer, conducting annealing on the substrate body, and plating the anode buffer layer with the metallic cathode in an evaporation mode. High conductivity and high reflectivity of the transparent electric conduction nano-particles are used, the electron transmission rate and the light reflection rate of a traditional anode buffer layer are strengthened, the absorptivity of the optical activity layer to sunlight is improved, the light current density and the carrier transmission efficiency of the organic thin-film solar cell are accordingly improved, the series resistance of the cell is reduced, and the photoelectric conversion efficiency of a device is improved.

The invention discloses a compound containing ketone and heterocyclic nitrogen and application thereof to an organic light-emitting device. The compound has the advantages of being not subjected to crystallization and aggregation easily and having good film-forming property, and rigid groups in molecules can improve heat stability of a material. The compound serving as a light-emitting layer material is applied to an organic light-emitting diode (OLED), and a manufactured OLED device has good photoelectric property and can meet the requirements of panel manufacturing enterprises.

The invention relates to a boron-containing organic compound and application of the boron-containing organic compound to an OLED device. The structure of the compound is shown as a general formula (1), the whole molecule of the compound is a large rigid structure, and the introduction of substituent groups reduces the planarity of a material, so the steric hindrance of the material is increased, the material is not easy to rotate, and a three-dimensional space structure is more stable; and therefore, the compound has higher glass transition temperature and molecular thermal stability. In addition, the HOMO and LUMO distribution positions of the compound are separated from each other, so the compound has appropriate HOMO and LUMO energy levels; and therefore, after the compound is applied to the OLED device, the luminous efficiency of the device can be effectively improved, and the service life of the device can be effectively prolonged.

Polymerized phthalocyanine compound with following general formulas can be used as cell cathode catalyst with direct alcohols as fuel. Polymerized phthalocyanine compound has more atoms which can form big ªð bonds, high catalytic activity and high selectivity, and large probability of 4e reduction by catalyzing oxygen for releasing oxygen completely. The compound belongs to non-platinums and alcohol-resistant catalyst.

The invention relates to preparation methods of a natural biomass quantum dot and a biomass quantum dot-copper nanocomposite and application of the natural biomass quantum dot. The preparation methodof the biomass quantum dot comprises the following steps: S1, grinding spinach leaves into paste; S2, adding a mixed solution of ethanol and acetone, uniformly mixing and filtering; S3, adding oleic acid, polyethylene glycol diamine and a magnetic stir bar into a three-neck flask, pumping air out after sealing, introducing argon, stirring, heating to 170 to 190 DEG C, and stopping heating when thesolution is in orange-yellow color; S4, cooling the solution to room temperature, adding a chlorophyll crude extracting solution, heating the solution to 170 to 190 DEG C under the protection of theargon and magnetic stirring, and keeping the temperature for 170 to 190 minutes; S5, naturally cooling the solution to room temperature, and adding concentrated HCl till the solution is in strong acidity; S6, standing for layering, and collecting subnatant; S7, adjusting the pH value of the solution to neutral with a saturated NaOH solution, filtering larger particles, and performing dialysis to obtain a biomass quantum dot solution. The biomass quantum dot solution has the characteristics of high fluorescence intensity, high light stability and high biocompatibility.

The invention relates to the technical field of OLEDs, and provides compounds having TADF properties. The compounds have a structure represented by a formula (1) shown in the description, wherein L1 and L2 are each independently selected from the group consisting of a hydrogen atom, phenyl, naphthyl, anthryl, pyridyl, pyrimidinyl, and pyrazinyl; and R1 and R2 are each independently selected from aromatic or heteroaryl groups such as substituted or unsubstituted carbazolyl and a derivative group of the substituted or unsubstituted carbazolyl, acridinyl and a derivative group of the acridinyl, diarylamino and a derivative group of the diarylamino. According to the compounds provided by the invention, the bis-boron heterocyclic structure is used not only as an electron acceptor group but alsoas a linking group; and in the compounds, a large-steric-hindrance group is linked to a boron atom of a boron heterocyclic ring, so that aggregation of the compound molecules is avoided, pi-aggregation or an excimer is prevented from being formed due to direct accumulation of a conjugate plane, and the luminous efficiency is improved.

The invention discloses a boron-containing multi-element heterocyclic organic compound and an application thereof to an OLED (organic light-emitting diode) device. The compound utilizes benzo six-membered rings as a core, and boron is located on the six-membered ring in the center. The compound has the characteristics that molecules are not prone to crystallization and aggregation and film-formingproperty is good. When the compound is utilized as a luminous layer material of the OLED device, current efficiency, power efficiency and external quantum efficiency of the device are greatly improved; besides, the service life of the device is obviously prolonged.

The invention belongs to the technical field of OLEDs (organic light emitting diodes) and provides a polymer of a structure of formula (I) as shown in the specification. In the formula, R1 and R2 arerespectively selected from C1-C20 alkyl, C3-C20 naphthenic base, C1-C20 alkoxyl and substituted or unsubstituted aryl or heteroaryl; L is selected from single bonds, phenyl, naphthyl, pyridyl, pyrimidyl and pyrazinyl; R3 is selected from substituted or unsubstituted aryl or heteroaryl; R4 is selected from alkyl or alkoxyl of C4-C20; n is greater than or equal to 4. The polymer provided by the invention comprises heterocyclic boron-carbazole structure and has TADF (thermal activation delay fluorescence) properties, when the polymer is used in an organic light emitting diode, light can be emitted from triplet exciton with transition inhibition of conventional fluorescence molecules, and thus the efficiency of a device can be improved. Meanwhile, a carbazole polymer type TADF material self has a bipolar property, when the polymer is used as a main body or secondary material of a light emitting layer, the transmission capability of two charge carriers and charge carrier balance can be greatly improved, the fluorescence quantum efficiency can be improved, and the voltage of the device can be reduced.

The invention discloses an organic compound taking pyridine as a core and application thereof to OLED. The organic compound has the characteristics that the molecules are not easy to crystallize and aggregate, and have good film-forming property. The rigid group in the compound molecule can improve the heat stability of materials. When the compound serving as a luminescent layer material is applied to OLED, manufactured OLED devices have good photoelectric property and can properly meet the requirements of panel manufacturing enterprises.

The invention discloses a heterocyclic compound with xanthone as a core and a preparation method and applications thereof, and belongs to the technical field of semiconductors. The structure of the compound provided by the invention is represented by a general formula (I) shown in the description. The invention also discloses the preparation method and the applications of the compound. The compound of the invention has high glass transition temperature and molecular thermal stability and has a suitable HOMO and LUMO energy leves, has a singlet-triplet energy level difference ([delta]Est), andcan be used as a doping material of a light emitting layer of an organic electroluminescent device, thereby improving the luminous efficiency and service life of the device.

The invention discloses a compound taking heteroatom-containing benzfluorenone as a core and application of the compound to an organic electroluminescence device. The compound takes the heteroatom-containing benzfluorenone as the core and has the characteristics that molecules are not easy to crystallize or gather, and a good film forming property is realized. When the compound disclosed by the invention is used as a luminescent layer material of the organic electroluminescence device, the current efficiency of the device is greatly improved; meanwhile, the life of the device is obviously prolonged.

The invention discloses a compound taking anthranone as a core and an application of the compound in organic electroluminescent devices. The compound has the characteristics that molecules are not prone to crystallization and not prone to aggregation and the film forming property is good, and the thermal stability of the material can be improved due to rigid radicals in the molecules. The compound disclosed by the invention is applied to the organic electroluminescent devices as a luminescent layer material, and manufactured organic electroluminescent devices have good photoelectric properties and can meet the requirements of panel manufacturing enterprises.

The invention discloses a pyridine-based five-membered-ring substituted compound and application thereof. The compound provided by the invention has the characteristics that the crystallization and the aggregation among molecules are difficult, and the compound has a favorable film-forming property. The heat stability of a material can be improved by rigid groups in the molecules of the compound provided by the invention; the compound provided by the invention is applied to OLEDs (Organic Light Emission Diodes) as a luminescent layer material; a made OLED appliance has favorable photoelectric properties, and can better meet the requirements of a panel manufacturing enterprise.

The invention discloses a compound adopting dimethylanthrone as a core, and an application thereof in organic electroluminescent devices. The compound adopting the dimethylanthrone as the core and heteroarylcarbazole as a branched chain has the characteristics of difficulty in intermolecular crystallization, difficulty in aggregation and good electrochemical stability. When the compound is used as the luminescent layer material of the organic electroluminescent devices, the current efficiency of the devices is greatly improved, and the life of the devices is obviously prolonged.

The invention discloses a compound taking a quinolinone derivative as a core and an application of the compound in an organic electroluminescent device. The compound structurally contains the quinolinone derivative as an electron acceptor, so that transmission of electrons in a light-emitting layer is facilitated. A connected heterocyclic group is an electron donor, so as to facilitate the transmission of holes in the light-emitting layer. Nitrogen atoms in the heteroatom-containing benzoazadione are saturated atoms, have quite strong rigidity and are beneficial to improving the triplet stateenergy level of the parent nucleus compound, and the combination of the electron donor and the electron acceptor can improve the recombination efficiency of excitons, the starting voltage is reduced and the performance of the device is improved. When the compound is used as a light-emitting layer material of the organic electroluminescent device, the current efficiency of the device is greatly improved, and the service life of the device is obviously prolonged.

The invention discloses a compound taking dimethyl anthrone as a core and an application of the compound to an organic electroluminescence device. The compound taking the dimethyl anthrone as the core has the advantages that molecules are not easily crystallized or gathered, and the compound has a good film-forming property. When the compound is used as a light-emitting layer material of the organic electroluminescence device, the current efficiency of the device is greatly improved, and the service life of the device is obviously prolonged.

The invention discloses an organic light-emitting diode (OLED) and a preparation method thereof, a display substrate, and a display apparatus. The organic light-emitting diode is composed of an anode, a hole injection layer, a hole transport layer, an organic light emitting layer, an electron transport layer and a cathode. The cathode is made of a transparent conductive oxide material layer. An energy level transition layer is formed between the electron transport layer and the cathode and is used for carrying out energy level transition between the electron transport layer and the cathode, thereby reducing the difficulty of the electron injection. Compared with the OLED device in the prior art, the electron injection of the OLED device becomes easy and the operating voltage of the OLED device is substantially reduced, thereby substantially improving the service life of the OLED device and solving problems of short service life and over large operating voltage of the OLED device due to mismatching of the TCO process or energy level.

The invention discloses a boron-containing organic electroluminescent compound and an application thereof on organic electroluminescent devices, and belongs to the technical field of semiconductors. The boron-containing organic electroluminescent compound has a structure shown in a general formula (1). The invention also discloses an application of the boron-containing organic electroluminescent compound on organic electroluminescent devices. When the compound is used as a luminescent layer material of an organic electroluminescent device, the current efficiency, the power efficiency and the external quantum efficiency of the device are greatly improved; and meanwhile, the service life of the device is obviously prolonged.