40results about How to "Appropriate energy level" patented technology

The invention relates to an organic material containing spiro (benzo[de]anthracene-7.9'-fluorene) and an organic electroluminescent device utilizing the same, specifically to a new spiro-typed organic material used to an organic electroluminescent device and an organic electroluminescent device having excellent features of low electric power and high efficiency using the organic material.

A light-emitting element which exhibits high emission efficiency is provided without using a rare metal as a light-emitting material. The light-emitting element including a first electrode, a second electrode, and a layer containing organic compounds between the first electrode and the second electrode is provided. The layer containing organic compounds includes a light-emitting layer at least containing a fluorescent substance. The light-emitting layer includes a fluorescent substance, a first organic compound, and a second organic compound. The combination of the first organic compound and the second organic compound forms an exciplex. The first organic compound is a substance having the first skeleton including a benzofuropyrimidine skeleton or a benzothienopyrimidine skeleton.

An apparatus for laser depilation according to the present invention uses a semiconductor laser diode, which is controlled in respect of its energy level, thereby permitting an economical, effective and safe cosmetic treatment. The power output of light of the semiconductor laser diode ranges from 5 to 1500 mW, and the peak wavelength ranges from 600 to 1600 nm. The controller of the semiconductor laser diode comprises pulsating power output control means and radiation period control means for setting a desired length of time for radiation. With these control means the energy level of the beam of light from the laser may be so controlled that a strong beam of light may be thrown for a relatively short time, or that a weak beam of light may be thrown for a relatively long time. Thus, hairs of different thickness and colors can be removed.

The invention discloses an indeno[1,2-b]fluorene unit-based A-D-A conjugate micro-molecule, and an application thereof in photoelectric devices. The conjugate micro-molecule is centered on an indeno[1,2-b]fluorine unit, and adopts a conjugate unit as a bridge bond and different electron withdrawing units as end groups. The conjugate micro-molecule has good absorption and appropriate energy grade in the visible range, and can be applied to donor materials and receptor materials in organic solar cells to make the devices have a good efficiency.

The invention discloses a fluorine-substituted organic micro-molecular hole-transport material and an application thereof. The material provided by the invention has a simple molecular structure, wherein benzodithiophene and derivatives thereof are used as a central core; different heterocycle-containing units are introduced to capping groups; and the central core and the capping groups are linkedby different fluorine-substituted phenyl groups. The material provided by the invention has the advantages of simple synthesis steps, easiness in purification, good solubility in an organic solvent,proper molecular energy levels, high hole mobility and electrical conductivity, and good hydrophobicity, is applied to perovskite solar cells with good stability and high short-circuit current densityand energy conversion efficiency, and has extensive application prospects.

The invention discloses an organic conjugated small molecular material with a terminal group containing a naphthenic chain as well as a preparation method and application thereof to solar cells, and belongs to the technical field of organic solar cells. The terminal group of the organic conjugated small molecular material contains the naphthenic chain with higher rigidity, so that self-assembly and stacking between molecules are facilitated, the photovoltaic performance of the small molecular material is improved, and the heat stability of the small molecular material is good; moreover, he small molecular material has high light absorption property and has appropriate energy levels and can be dissolved in organic solvents such as chloroform, dichloromethane, tetrahydrofuran and chlorobenzene, and is suitable for being used as an organic solar cell material. The organic conjugated small molecular material disclosed by the invention as a light-captured active layer receptor material is applied to the organic solar cells and has higher photoelectric conversion efficiency.

The invention discloses a red organic fluorescence material containing a benzothiadiazole derivative, namely 4,7-bis(10-(4-(tert-butyl) phenyl)-10H-phenothiazine-3-yl) diazosulfide as well as a preparation method and application of the red organic fluorescence material, and belongs to the technical field of organic optoelectronic materials. The red organic fluorescence material is characterized inthat 10-(4-(tert-butyl) phenyl) phenothiazine is used as a donor, and 10-(4-(tert-butyl) phenyl) phenothiazine with a D-A-D structure is obtained by a phenothiazine 3rd-bit bridging mode of benzothiadiazole; due to peculiar properties of a tert-butyl phenyl group, the dissolving processing performance and electronic transmission performance of a derivative compound donor material are improved, carrier support is more balanced in transportation and the luminous efficiency is improved; the prepared compound has high thermal stability and chemical stability and proper energy level, and can be applied to the field of organic electroluminescence as a red light material; and a prepared organic electroluminescence device has the characteristics of lower drive voltage, higher current efficiency,external quantum efficiency and the like and obtains higher electroluminescence.

The invention provides a thermal activation delayed fluorescent material and application of the thermal activation delayed fluorescent material to organic light emitting diodes. The chemical structureof the thermal activation delayed fluorescent material is shown as a formula (1). A group R in the formula (1) is a chemical group, and triphenylamine derivatives and carbazole derivatives are linkedwith one another to form the chemical group; the R is selectively a type of the certain carbazole derivatives, and the numbers of annular carbon atoms of the certain carbazole derivatives are 18. Thethermal activation delayed fluorescent material and the application have the advantages that donor groups of organic light emitting materials are modified, accordingly, the current carrier transportperformance of the donor groups can be greatly improved, and the organic light emitting materials are good in device performance when applied to blue light, deep blue light or white light; the thermalactivation delayed fluorescent material not only can be used as blue light dye, but also can be used as a host material for yellow light or green light dye; the problem of efficiency roll-off under the condition of high brightness can be solved when the thermal activation delayed fluorescent material is applied to the organic light emitting diodes with single light emitting layers, the structuresof white organic light emitting diode devices can be simplified, and the industrial production cost can be reduced.

The invention discloses an organic n-type semiconductor polymer material based on naphthalimide-selenophen derivative as well as a preparation method and application of the organic n-type semiconductor polymer material. The organic n-type semiconductor polymer material is based on long-chain naphthalimide or a derivative thereof as an electron withdrawing unit and alkoxy substituted selenophen ora selenophen derivative as an electron donating unit, wherein 3-position or 4-position of selenophen or the selenophen derivative is substituted with alkoxy or 3-position and 4-position of selenophenor the selenophen derivative is substituted with alkoxy. The n-type conjugated polymer semiconductor based on naphthalimide and selenophen derivatives disclosed by the invention has the advantages ofsolution processing, high electron mobility, proper energy level, excellent film-forming properties and the like, and is an ideal non-fullerene acceptor material.

The invention belongs to the field of organic materials, and relates to a spiro compound and an application thereof, and an organic electroluminescent device and an electronic device using the spiro compound. The spiro compound has a structure represented by a formula 1 shown in the description: wherein the group A has a structure represented by a formula 2; and Ar2 is selected from a group consisting of structures shown as a formula a', a formula b', a formula c' and a formula d'. The spiro compound is used as a hole transport material and is applied to an OLED (Organic Light Emitting Diode)device, and a good device performance and relatively low voltage can be obtained.

The invention relates to a pyrene and imidazole derivative and a preparation method and application thereof. The bridging mode of C2 atom and N1 atom of an imidazole group is changed to form the pyrene and imidazole derivative with the structural formula as shown in (A), the pyrene and imidazole derivative is a novel blue-light emitting material, and owing to introduction of the imidazole group, the level structure and the electron transmission performance of the pyrene and imidazole derivative can be regulated. The pyrene and imidazole derivative can serve as an organic electroluminescent material to prepare an organic electroluminescent device, and the prepared device has the characteristics of high efficiency, low driving voltage and the like.

The invention discloses a high efficiency organic small molecule receptor material, a preparation method and application thereof. The method includes: taking 2, 7-dibromobenzo[b]benzo[4, 5]thieno[2, 3-d]thiophene (BTBT) and difluoro-indandione as the raw materials, carrying out Suzuki-Miyaura coupling reaction, Friedel-Crafts reaction, Vilsmeier-Haack reaction and Knoevenagel condensation reaction to synthesize A-D-A type organic small molecule receptor material shown as formula (I). The obtained material can be purified by recrystallization and has good thermal stability. By applying the material to polymer solar cells, under the condition of optimizing devices, 12.66% energy conversion efficiency can be acquired, and the material has certain practical application value.

The invention discloses an organic red light micromolecule based on feidazole-trans-diphenyl dicyanide ethylene and a preparation method and application thereof in an electroluminescent device, and belongs to the technical field of organic electroluminescence. Beginning from phenanthrenequinone, a one-pot method is adopted for preparing feidazole raw materials, feidazole and trans-diphenyl dicyanide ethylene are connected through a Suzuki condensation reaction to obtain a novel feidazole derivative of the D-pi-A-pi-D structure adopting feidazole as a donor and adopting the trans-diphenyl dicyanide ethylene as a receptor. The obtained compound has the high fluorescence quantum yield and can be adopted as a luminous layer to be applied in a non-doped or doped organic light-emitting device (OLED), and the prepared device has the advantages of being high in efficiency, low in driving voltage and the like.

The invention provides a D-A type conjugated polymer, a preparation method and applications thereof, wherein a compound having a structure represented by a formula defined in the specification, an electron donating monomer and a catalyst are subjected to light shielding reaction in an organic solvent system under the protection of an inert gas, and column chromatography purification is performed to obtain the target product. According to the present invention, the D-A type conjugated polymer can be used for solar cell devices, wherein the solar cell device sequentially comprises a glass layer,an indium tin oxide electric-conduction layer, a zinc oxide electron transport layer, a D-A type conjugated polymer and C71 mixing active layer, a molybdenum trioxide hole transport layer and a silver electrode layer from bottom to top; and the used fluoroboron dipyrrole group has a certain rigid plane structure and good carrier transporting property, and can form the donor-receptor (D-A) conjugated structure with the electron donating group, such that the low energy bandgap can be obtained, and the spectral absorption of the material can be broadened and enhanced so as to be used for constructing high-efficiency organic solar cell materials.

The present invention relates to a triphenylene derivative for an organic light-emitting element, a light-emitting element material containing the triphenylene derivative, and a light-emitting element, and more specifically, to a soluble organic compound having excellent color purity and high brightness and light-emitting efficiency, and an OLED device using the compound. The compound is characterized by being represented by a general formula (1).

The present invention relates to a pyrene derivative for an organic light-emitting element, a light-emitting element material containing the pyrene derivative, and a light-emitting element, and more specifically, to a soluble organic compound having excellent color purity and high brightness and light-emitting efficiency, and an OLED device using the same. Compounds are characterized by being represented by general formula (1).

The invention belongs to the technical field of heterocyclic compounds, and discloses an A-D-A type benzothiadiazole small molecule, a preparation method and application thereof. The preparation method comprises: first, under the condition of shielding from light, respectively reacting benzothiadiazoles with different numbers of fluorine atoms with an electron-donating monomer in the presence of acatalyst in an organic solvent system under an inert gas atmosphere, and finally carrying out column chromatography purification to prepare a target product. The benzothiadiazole group used in the invention has a certain rigid planar structure and good carrier transport properties, and can form an acceptor-donor-acceptor (A-D-A) conjugated structure with an electron donating group to achieve a lower bandgap, and broaden and enhance spectral absorption of a material, and the A-D-A type benzothiadiazole small molecule is used to construct highly efficient organic solar cell materials. The conjugated small molecule] has good absorption and suitable energy level in a visible light range, and is applied to donor materials in an organic solar cell, and good device efficiency is obtained. The organic solar cell has a simple preparation process, large-area manufacturing is easy to realize, and the cost is low.

The invention relates to a derivative containing bispyrenyl imidazole, and a preparation method and an application thereof. The bridging mode of the C2 atom and the N1 atom in an imidazolyl group is changed o form the derivative containing bispyrenyl imidazole, the structure of the derivative containing bispyrenyl imidazole is represented by formula (A) or formula (B), the derivative containing bispyrenyl imidazole is a novel blue light material, and the imidazolyl group is introduced to adjust the energy level structure and the electron transport property of the above compound. The derivative containing bispyrenyl imidazole can be used for making organic electroluminescent device as an organic electroluminescent material, and the made devices have the characteristics of high brightness, high efficiency and low driving voltage.

The invention discloses a perovskite solar cell based on a magnetron sputtering zinc oxide / stannic oxide double-electron transport layer, and the perovskite solar cell takes magnetron sputtering zincoxide as the electron transport layer, and forms the double-electron transport layer through the spin coating of stannic oxide, thereby improving the mobility of the electron transport layer, improving the compactness of a film, improving the carrier transmission, and improving the photoelectric conversion efficiency and stability of the device. According to the invention, the zinc oxide and stannic oxide electron transport layer can be prepared under a low-temperature condition, and the stable high-performance perovskite solar cell is obtained.

The invention provides an organic electroluminescent material and application thereof. The organic electroluminescent material can provide a proper energy level; high-speed hole transport capability is realized; the organic electroluminescent material can be applied to the field of organic electroluminescence and used as a red hole transport material so as to improve the hole transport capabilityof a red organic layer material, adjust the microcavity resonance of a device, reduce the voltage of the device and improve the light efficiency of the device, sand thus the performance of an OLED device can be improved, and the application range of the OLED device can be expanded.

The invention provides a D-A type chlorinated conjugated polymer as well as a preparation method and application thereof. The chlorinated conjugated polymer molecule is prepared by the following steps: firstly carrying out a light-shielding reaction on thiophene units contained in different repeating units, an electron-donating monomer, an electron-withdrawing monomer and a catalyst in an organicsolvent system under the protection of an inert gas, and finally purifying by adopting column chromatography, thereby obtaining a target product. The D-A type chlorinated conjugated polymer has good electron transmission capability and good absorption in a visible light range, is applied to a donor material in an organic solar cell, and has good photovoltaic performance.

The invention discloses an organic small molecule acceptor material and its preparation method and application. Suzuki‑Miyaura coupling reaction starting from 2,7‑dibromobenzo[b]benzo[4,5]thieno[2,3‑d]thiophene (BTBT) and difluoro‑indandione , Friedel-Crafts reaction, Vilsmeier-Haack reaction and Knoevenagel condensation reaction to synthesize A-D-A type organic small molecule acceptor material, as shown in formula (I), the resulting material can be purified by recrystallization, and has good thermal stability. When it is applied to polymer solar cells, an energy conversion efficiency of 12.66% can be obtained under optimized device conditions, which has certain practical application value.

The present invention relates to an organic material comprising a spiro ring (benzo[de]anthracene-7.9'-fluorene) and an organic electroluminescent device using the same, and more specifically, to a new spiro ring that can be used in an organic electroluminescent device Type organic compounds and organic electroluminescent devices with excellent characteristics such as low power and high efficiency by using them.

The invention relates to a hole-transporting polymer containing benzyl alcohol groups and its application in perovskite solar cells, belonging to the field of perovskite solar cells. The object of the present invention is to provide a polymer hole transport material containing benzyl alcohol groups. The polymer main chain of this material is composed of triarylamine repeating units to ensure that it has a suitable HOMO energy level and hole mobility; the side chain introduces benzyl alcohol groups to improve the hydrophilicity of the polymer, which can realize calcium titanium The complete and uniform coverage of the mineral layer on the surface of its film. In addition, the repeating unit of the polymer is easy to synthesize, and the raw material is cheap, which reduces the development cost of the material. These are conducive to the application of such polymer hole transport materials in high-efficiency and large-area devices, and have good application prospects.

The invention discloses an organic n-type semiconductor polymer material based on naphthalimide-selenophene and its preparation method and application. Based on the long-chain naphthalimide as an electron-pulling unit, selenophene and its derivative diselenide The invention relates to an n-type organic conjugated polymer semiconductor material with electron-donating units and a preparation method thereof, and the application of the polymer as a cathode interface modification layer material in a perovskite solar cell. The n-type conjugated polymer semiconductor based on naphthalimide and selenophene derivatives disclosed by the present invention has the advantages of solution processing, high electron mobility, excellent thermal stability, and appropriate energy level, and is an ideal perovskite Solar cell cathode interface modification material.

The invention relates to a novel A-D-A conjugate small molecule and an application thereof in a photoelectric device. A novel D conjugate skeleton is synthesized through a one-pot method; each conjugate unit is a bridged bond; and different electron-withdrawing units are end groups. The conjugate small molecule has good absorption and appropriate energy level within a visible light range, is applied to a donor material and an acceptor material in an organic solar cell, and achieves excellent device efficiency.

The invention provides an aromatic amine derivative containing bifluorene and an organic electroluminescence device thereof, and relates to the technical field of organic photoelectric materials. The technical problem to be solved by the invention is the problem of poor stability of current hole transport materials and short service life of organic electroluminescent devices. The bifluorene-containing arylamine derivative of the formula I of the present invention uses bifluorene as a parent, and is connected to the arylamine through a single bond or a bridging group. The organic electroluminescent device of the present invention comprises an anode, an organic layer and a cathode, the organic layer is located between the anode and the cathode, and the organic layer contains the arylamine derivative containing bifluorene. The arylamine derivative containing bifluorene of the present invention has suitable energy level, higher hole mobility, better stability and better film-forming property, and the organic electroluminescent film containing the arylamine derivative The device has lower driving voltage, higher luminous efficiency and longer service life.

The application belongs to the field of organic materials, and relates to a spiro compound and its application as well as an organic electroluminescence device and an electronic device using the same. The spiro compound has a structure shown in formula 1: wherein, represents a chemical bond, and group A has a structure shown in formula 2; Ar 2 Selected from the group consisting of structures represented by formula a', formula b', formula c', and formula d'. The spiro compound of the present application is used as a hole transport material in OLED devices, and can obtain good device performance and lower voltage.

The invention discloses a conjugated polymer based on a thiophene [3, 4-c] pyrrole-4, 6-diketone structure, the chemical structural formula of the conjugated polymer is as shown in formula (I): the thiophene [3, 4-c] pyrrole-4, 6-diketone structure, namely a monomer A, has the characteristics of high symmetry, planar structure, superstrong electron attraction capability and the like; according to the conjugated polymer based on the thiophene [3, 4-c] pyrrole-4, 6-diketone structure, charges in molecules can be transferred, the energy levels of the highest occupied orbital and the lowest unoccupied orbital of the polymer are effectively adjusted, and the conjugated polymer based on the thiophene [3, 4-c] pyrrole-4, 6-diketone structure is wide in absorption spectrum, good in thermal stability and appropriate in energy level and meets the energy requirement of photocatalytic hydrolysis hydrogen production. The nanoparticles have good water solubility and high thermodynamic stability, and have a hydrogen production rate of 133.9 [mu] mol. G <-1 >. H <-1 > at a concentration of 300 [mu] g / mL.