24results about How to "Excellent luminous properties" patented technology

The invention relates to the technical field of semiconductor manufacturing, in particular to a light-emitting diode, which comprises a semiconductor laminated layer, a first connecting electrode, a second connecting electrode, a first electrode, a second electrode, an insulating layer, a first bonding pad and a second bonding pad, the first connecting electrode and the second connecting electrode are connected with the semiconductor laminated layer, the first electrode is connected with the first connecting electrode, and the second electrode is connected with the second connecting electrode. The first electrode is connected with the first connecting electrode, the second electrode is connected with the second connecting electrode, the insulating layer covers the semiconductor laminated layer, the first bonding pad is connected with the first electrode, the second bonding pad is connected with the second electrode, the first electrode comprises annular electrodes and strip-shaped electrodes, the strip-shaped electrodes and the annular electrodes are arranged at intervals, the second electrode comprises extension electrodes, and the strip-shaped electrodes are located between the extension electrodes. The second opening is formed in one side of the second electrode, and the first opening is formed in one end, away from the second opening, of the strip-shaped electrode. Therefore, current congestion of the light-emitting diode can be avoided, the light-emitting uniformity of the light-emitting diode is improved, and the light-emitting quality of the light-emitting diode is improved.

The present invention relates to an organic light-emitting device with high efficiency and long life. The organic light-emitting device uses a polycyclic compound that can be used in various organic layers of the organic light-emitting device as a dopant for the light-emitting layer, and uses an anthracene derivative compound with a specific structure and substituent as the main body of the light-emitting layer, thereby improving the color purity and significantly improving the luminous efficiency and life characteristics.

The present invention provides an organic light-emitting device, which includes: an anode; a cathode disposed opposite to the anode; a light-emitting layer between the anode and the cathode; a hole transport region between the anode and the light-emitting layer; and an electron transport region between the light-emitting layer and the cathode.

The invention belongs to the technical field of photoelectric materials and application, and discloses a main chain conjugated intrinsic stretchable thermal delay fluorescent elastomer as well as a preparation method and application thereof. The elastomer is prepared through free radical polymerization by taking a high-efficiency luminous TADF conjugated unit as a main chain and acrylic ester as a flexible side chain. The innovation of the invention lies in that a flexible acrylate side chain is introduced into a rigid efficient electroluminescent TADF conjugated main chain for the first time in a chemical cross-linking manner to form a rod-like bottle brush structure, so that the elastomer has good photoelectric characteristics on the basis of improving the intrinsic tensile property of the elastomer; the structure is novel, the design strategy is unique, and meanwhile the problems that a traditional conjugated luminescent material is not intrinsic in stretchability and a traditional elastomer does not have the high-performance photoelectric characteristic are solved; the elastomer is used as a luminescent layer material to prepare an organic photoelectric device with high stability, high stretchability and high efficiency.

The invention discloses manganese ion doped enhanced up-conversion red light emitting scandium aluminate and a synthesis method thereof, and belongs to the technical field of up-conversion luminescent materials. The molecular formula of the up-conversion luminescent material provided by the invention is Ba (2-x) MnxSc (0.67) Yb (0.3) Er (0.03) AlO5 (x = 0-0.5), and the preparation method is a high-temperature solid phase method. The radius of manganese ions is much smaller than that of barium ions, so that the manganese ions easily enter a main substrate Ba2ScAlO5 and influence a crystal field, and oxygen vacancies are generated in the material. Defects formed by the oxygen vacancies can increase the energy transfer efficiency of the material, so that the sensitization and emission capabilities of rare earth ions are improved, and the luminescence characteristic of the material is improved. The obtained Ba1. 6Mn0. 4Sc0. 67Yb0. 3Er0. 03AlO5 has the maximum red light emission intensity at the red light wavelength of 664nm under the excitation of 980nm near infrared laser, and compared with the red light emission intensity of Ba2Sc0. 67Yb0. 3Er0. 03AlO5 obtained in a contrast, the red light emission intensity of the Ba1. 6Mn0. 4Sc0. 67Yb0. 3Er0. 03AlO5 is improved by nearly 27.4 times. The manganese ion doped scandium barium aluminate up-conversion luminescent material prepared by the invention has excellent single red up-conversion luminescence, and meanwhile, the preparation method is simple, good in controllability, high in yield and more energy-saving and environment-friendly in preparation process, and is suitable for industrial popularization.

A biocidal product for application to a surface, in particular a porous surface, such as a fabric, textile, and the like, which product incorporates an identification mark that enables the presence of the product to be confirmed and thus protected in maintenance. The biocidal composition comprises: between 0.01% and 0.05%, relative to the total weight of the product, of a vinyl ester resin acting as a carrier for the biocidal agent; the mixture is formed by combining 0.1 to 2.0 percent of dimethyl didecyl ammonium chloride and 2.0 to 10.0 percent of dimethyl octadecyl [3-(trimethoxysilyl) propyl] ammonium chloride in a medium which is formed by a mixture of 0.2 to 1.0 percent of methanol and 0.02 to 1.50 percent of ethanol; urea with a ratio of 0.2 to 1.0% and acetic acid with a ratio of 0.001 to 0.010%; and the luminescent additive is combined with the aluminosilicate metal oxide containing rare earth ions in the form of a dopant.

The present invention relates to the technical field of organic electroluminescent materials, and specifically to a fully deuterated pyridine and boron oxygen heterocyclic compound and its application. The fully deuterated pyridine and boron oxygen heterocyclic compound has the structural formula:; The fully deuterated pyridine and boron oxygen heterocyclic compound can be applied to the field of organic electroluminescent materials, and can achieve ultra-high green light base color purity. The parent structure of the fully deuterated pyridine and boron oxygen heterocyclic compound is a high-rigidity condensed ring structure with six six-membered heterocyclic rings arranged in parallel, which has a large steric hindrance, significantly increases the spin-orbit coupling effect between different excited states, and greatly limits the molecular relaxation process. Finally, the device achieves ultra-pure green light emission, and the full deuteration can significantly improve the device life and luminous efficiency.

Provided is a semiconductor light-emitting element having better light-emitting characteristics than conventional light-emitting elements. This semiconductor light-emitting element is provided with a light-emitting layer having a laminate in which a first group III-V compound semiconductor layer and a second group III-V compound semiconductor layer are repeatedly laminated, the group III element in the first group III-V compound semiconductor layer and the second group III-V compound semiconductor layer is one or more elements selected from the group consisting of Al, Ga, and In, and the group V element in the first group III-V compound semiconductor layer and the second group III-V compound semiconductor layer is one or more elements selected from the group consisting of As, Sb, and P. The difference between the composition wavelength of the first group III-V compound semiconductor layer and the composition wavelength of the second group III-V compound semiconductor layer is 70 nm or more, the well depth (Dc) on the conduction band side in the energy band structure of the laminate is greater than the well depth (Dv) on the valence band side, and Dc / (Dc + Dv) is 65% or more.

The present application relates to the technical field of organic photoelectric material, in particular to a stretchable polymer based on diarylfluorene derivative and a preparation method and application thereof.The stretchable polymer based on diarylfluorene derivative has a structural unit as shown in formula (I), wherein R1 is selected from a fluorine-substituted alkyl chain with 4-20 carbon atoms, and R2 is selected from an alkyl chain or a fluorine-substituted alkyl chain with 4-20 carbon atoms.The present application designs and synthesizes a fluorene monomer substituted by diaryl at the 9th position by using 2,7-dibromofluorenone as raw material through Bayer-Villiger rearrangement and Grignard reaction, introduces a fluorine-substituted alkyl chain at the 4th position of the fluorene unit, effectively enhances the chain entanglement between polymers and constructs a crosslinked network structure, and provides a polymer with excellent flexibility, stretchability and stable photoelectric performance.

A phosphor particle, whose composition is represented by the general formula (1): A2MF6:Mn, has at least one micro-concave portion on the surface. In the general formula (1), the element A is one or more alkali metal elements including K, and the element M is a simple substance of Si, a simple substance of Ge, or a combination of Si and one or more elements selected from Ge, Sn, Ti, Zr and Hf.

The present invention is a quantum dot, which is a quantum dot as a crystalline nanoparticle phosphor, wherein the quantum dot has a core-shell structure, the core-shell structure includes a core particle containing a first metal element and a shell layer containing a second metal element, and a third metal element different from the first metal element and the second metal element exists at the interface between the core particle and the shell layer, and the amount of the third metal element is 10% or less relative to the amount of the first metal element contained in the core particle in terms of molar ratio. Thus, a quantum dot having excellent controllability of emission wavelength and high luminescence characteristics and luminescence efficiency is provided.

The present invention is a quantum dot, which is a crystalline nanoparticle, the quantum dot has a core particle and a multilayer structure including a plurality of layers on the core particle, the quantum dot has Zn, S, Se and Te as constituent elements, and the quantum dot has at least one quantum well structure in a radial direction from the center of the quantum dot. Thus, a quantum dot which is a crystalline nanoparticle can be provided, which does not contain harmful substances such as Cd and Pb, has excellent luminescence characteristics such as luminescence half-value width, and has high quantum efficiency.

The invention discloses a fluorescent antibacterial polymer taking natural extract curcumin as a raw material and application of the fluorescent antibacterial polymer in fluorescent fibers. The curcumin polymer has an aggregation-induced emission effect and an antibacterial property, and under the irradiation of a 365nm ultraviolet lamp, the polymer emits yellow-green fluorescence in a solid state. The invention discloses a preparation method of a fluorescent fiber with a curcumin polymer as a dye, which comprises the following steps: blending the curcumin polymer and a resin matrix, granulating to obtain a fluorescent master batch, adding the fluorescent master batch into fiber slices, and carrying out melt spinning to prepare the fluorescent fiber. And the fiber has relatively good luminescence characteristic and mechanical property.

The invention discloses a preparation method of a cerium-based halogen perovskite phosphor and a product thereof, and belongs to the technical field of luminescent materials. The invention adds 4,4-difluoropiperidine and CeCl3·7H2O to a mixed solution of concentrated hydrochloric acid and methanol, and obtains a solid powder by heating; the solid powder is dissolved in methanol, single crystals are precipitated under the action of anti-solvent ether, and the cerium-based halogen perovskite phosphor is obtained after washing and drying. The cerium-based halogen perovskite phosphor of the invention is prepared by a solution method, so it is low in cost and meets the requirements of industrial production. The luminescent wavelength of the material covers 350 to 450nm, does not contain high-energy ultraviolet radiation, and thus meets the requirements of safe ultraviolet light emission. The material also has excellent luminescent properties, and the fluorescence quantum yield reaches 100%, which exceeds most ultraviolet fluorescent materials.

The present invention is based on a novel receptor that is easy to synthesize, i.e., cyano-substituted dithiafulvalene fused benzothiadiazoles, for the construction of dark red / near infrared luminescent materials. The dark red / near-infrared luminescent material can be easily obtained in five steps by changing a donor and connected functional groups, and shows excellent luminous efficiency in both an aggregation state and a solid state. Based on the novel donor-acceptor system, various materials applied to organic electroluminescent devices can be designed, and the material has a good prospect in the aspect of being applied to high-performance non-doped OLED (Organic Light Emitting Diode) devices.

The invention provides Mg2Al4Si5O18: X glass with low-temperature blue light long afterglow, the chemical expression of the glass is Mg2Al4Si5O18: X, and X is Eu < 2 + >, Sm < 3 + >, Tb < 3 + >, Pr < 3 + > and Er < 3 + >; the preparation method comprises the following steps: (1) determining a mathematical relationship between reaction temperature and reaction time, and obtaining a fitted curve by taking the reaction temperature x as an abscissa and the reaction time y as an ordinate; (2) determining rare earth ions required to be doped, and preparing corresponding raw material mixed powder; and (3) carrying out a reaction according to the predicted reaction time to obtain the Mg2Al4Si5O18: X glass with low-temperature blue light long afterglow. By adjusting the composition and structure of the material, the depth and distribution of traps are optimized, and the electron capture and release efficiency is improved, so that the long afterglow luminescence characteristic of the Mg2Al4Si5O18: X glass is further improved.

The invention belongs to the technical field of ratio type detection probes, and particularly relates to a metal organic framework material with double ligands and application of the metal organic framework material in DPA detection. The invention discloses a metal organic framework material with double ligands. The metal organic framework material is prepared from the following raw materials: pyromellitic acid, 2-aminoterephthalic acid and europium. The metal organic framework material is of a sheet structure with the particle size of 200-300 nm. The ratio-type fluorescent probe with a double-ligand strategy is designed for an Eu < 3 + > sensitization mechanism based on the antenna effect of DPA, the synthesis method is simple, convenient and rapid, the cost is low, the materials are easy to obtain, and the prepared MOF has good dispersity and very high stability, shows excellent luminescence characteristics, can effectively avoid interference of the external environment on a detection result, and has good application prospects. The method has high sensitivity and selectivity, and meanwhile, visual detection based on a smart phone platform is realized. The ratio (I621 / I450) of the fluorescence intensity at the emission peak of 621nm to the emission peak of 450nm is increased along with the increase of the DPA concentration, and quantitative detection can be realized.

The invention belongs to the technical field of fluorescent nano sensors, and particularly relates to a preparation method of an on-off-on fluorescent nano sensor based on NCl-CQDs (nitrogen-chlorine co-doped carbon quantum dots), nitrogen-chlorine co-doped carbon quantum dots NCl-CQDs are used as a fluorescent needle, 2, 6-dichloroindophenol sodium DCIP is used as a fluorescence quenching agent, ascorbic acid AA is used as a fluorescence restorer, and the fluorescent nano sensor is prepared by a one-step method. The three are specifically combined under a specific sample adding sequence to obtain the'on-off-on 'fluorescent nano sensor; the preparation method specifically comprises the following steps: taking glucose Glu, ethylenediamine EDA and concentrated hydrochloric acid HCl as raw materials, and preparing nitrogen-chlorine co-doped carbon quantum dots NCl-CQDs by adopting a dehydration heat release carbonization method; when the excitation wavelength is 390 nm, the maximum fluorescence emission wavelength of the NCl-CQDs is 467 nm, and at the moment, the fluorescence intensity is in an ON state; when DCIP is introduced into an NCl-CQDs solution, due to the photoinduced electron transfer effect, fluorescence of NCl-CQDs is quenched, the fluorescence signal intensity is closed, and the NCl-CQDs are in an OFF state; aA is continuously introduced into an NCl-CQDs / DCIP system, so that the fluorescence intensity of NCl-CQDs can be remarkably recovered, and at the moment, the fluorescence intensity is in an ON state.

The invention relates to a zirconium-based metal organic framework which is synthesized by introducing a reaction system containing a diketone building block, an aldehyde building block, ammonium acetate and a Zr metal source into an in-situ building block one-pot method system through a Debus-Radziszewski reaction. Wherein in the reaction process, diketone building blocks, aldehyde building blocks and ammonium acetate synthesize an organic ligand, meanwhile, the organic ligand and a Zr metal source are coordinated to synthesize the zirconium-based metal organic framework, and the zirconium-based metal organic framework is polycarboxylic acid Zr-MOFs. The zirconium-based metal organic framework Zr-MOF synthesized by the invention has good luminescence characteristic, so that the Zr-based metal organic framework Zr-MOF can be applied to the field of substance detection or biological imaging.

The invention relates to a yellow-green light-emitting single crystal material, a preparation method thereof and a yellow-green light-emitting device. The preparation method comprises the following steps: mixing soluble alkali metal iodide with soluble luminescent central ion halide, and dissolving the mixture in an acid solution at a first dissolving temperature to obtain a reactant solution; cooling the reactant solution from the first dissolving temperature to a first crystallization ending temperature according to a first cooling rate to obtain first crystal grains; and placing the first crystal grains in the reactant solution at a second dissolution temperature, and cooling to a second crystallization ending temperature according to a second cooling rate to obtain the yellow-green light-emitting single crystal material. The quantum yield of the yellow-green light-emitting single crystal material in the yellow-green wave band can reach up to 98.98%, the preparation method is simple, and the production period is short.

Provided are a triazine compound having a high glass transition temperature that contributes to the formation of an organic electroluminescent element that exhibits high luminous efficiency and long life, a material for an organic electroluminescent element containing the triazine compound, and an organic electroluminescent element. A triazine compound having a specific structure represented by formula (1). #imgabs0#

One aspect of the present application is a phosphor powder composed of Eu-containing α-Sialon phosphor particles. The volume-based median particle diameter (D 50 ) of the phosphor powder, measured using a laser diffraction scattering method, is 10 μm to 20 μm, and the diffuse reflectance for light having a wavelength of 600 nm is 93% to 99%.

The invention belongs to the technical field of photoelectric materials and application, and discloses a main chain conjugated intrinsic stretchable electroluminescent elastomer as well as preparation and application thereof. The elastomer is prepared by taking a conjugated structure with excellent photoelectric properties as a rigid main chain and polyacrylate as a flexible side chain through free radical polymerization reaction. The innovation of the invention lies in that a flexible acrylate side chain is introduced into a rigid luminous conjugated main chain for the first time in a chemical cross-linking manner to form a rod-like bottle brush structure, so that the elastomer has excellent photoelectric characteristics on the basis of improving the intrinsic tensile property of the elastomer; the structure is novel, the design strategy is unique, and meanwhile the problems that a traditional conjugated luminescent material is not intrinsic in stretchability and a traditional elastomer does not have the high-performance photoelectric characteristic are solved; the elastomer is used as a luminescent layer material to prepare an organic photoelectric device with high stability, high stretchability and high efficiency.

A light-emitting element (2) is provided with an EML (8) and an HTL (6), the EML (8) including a base material (16) and a plurality of QDs (14), the base material (16) including at least one parent compound having a Group VI element as the main component and including at least one Group II element having a smaller cycle number than the Group VI element, and the concentration of the sum of the Group II elements in the base material being within the range of 1 * 1016 atoms / cm3 to 1 * 1020 atoms / cm3.