24results about How to "High luminous intensity" patented technology

The invention provides a surface-modified perovskite nanocrystal and a preparation method and application thereof, and the surface-modified perovskite nanocrystal comprises: a perovskite nanocrystal having a chemical composition of ABX3; wherein A is selected from at least one of Cs < + >, CH3NH3 < + > and HC (NH2) 2 < + >; b is selected from at least one of Pb < 2 + >, Sn < 2 + >, Ge < 2 + > and Mn < 2 + >; x is selected from halogen anions; the surface of the perovskite nanocrystal is coated with an organic ligand layer; the organic ligand comprises a halogenated organic ligand. In the surface modified perovskite nanocrystal, the surface of the perovskite nanocrystal is coated with the organic ligand layer, so that surface defects can be effectively passivated at the same time, and the surface integrity and the crystallization quality of the nanocrystal are remarkably improved. And due to the surface consistency, the defect state density is reduced, and the exciton and phonon coupling coefficient is reduced, so that a non-radiative composite channel is remarkably inhibited, and the optical performance of the perovskite nanocrystal is remarkably improved.

The invention provides a sky-green light source LED packaging device, and belongs to the technical field of luminescent materials. The azure light source LED packaging device comprises a light-emitting substrate, wherein the light-emitting substrate comprises fluorescent powder; the fluorescent powder comprises blue-green fluorescent powder and green fluorescent powder; the light-emitting peak wavelength of the blue-green fluorescent powder is 490-500 nm, the molecular formula of the blue-green fluorescent powder is (Ba1-x-ySrxEuy) Si2N2O2, and x is greater than or equal to 0.001 and less than or equal to 0.3; 0.001 < = y < = 0.1; the blue-green fluorescent powder is of an orthogonal structure and is crystallized in a space group Pcca. According to the invention, on the basis of realizing azure luminescence, the luminescence performance of the azure luminescence is improved, especially the luminescence intensity of the azure luminescence is improved, and the anti-aging performance of the azure light source LED packaging device is also improved.

This invention discloses a III-V semiconductor epitaxial structure, its fabrication method, and its applications. The epitaxial structure includes a first buffer layer and a first interconnecting layer stacked together. The first interconnecting layer has a first protrusion structure with intermittent structures between it. It also includes a second buffer layer and a second interconnecting layer within the intermittent structures, the second interconnecting layer being composed of at least multiple independent second protrusion structures. The first and second protrusion structures can serve as the basis for epitaxial growth. The III-V semiconductor light-emitting layer grown based on the III-V semiconductor epitaxial structure provided by this invention forms light-emitting surfaces of various sizes and curvatures, greatly increasing the light-emitting area. It also enables the light-emitting layer to form quantum dot luminescence, and utilizes the quantum dot confinement effect to reduce the quantum Stark effect, improving the incorporation of light-emitting layer components. These combined effects significantly improve radiative recombination efficiency, ultimately enhancing the overall luminous intensity and efficiency of the device.

The invention belongs to the field of X-ray long-afterglow luminescent materials. The technical problems that traditional Pr < 3 + > doped fluoride is insufficient in afterglow performance, X-ray imaging depends on continuous irradiation, and color scattering noisy points exist are solved. The NaLuF4: Mg / Cs / Pr fluoride material is prepared by adopting a Cs < + >-Mg < 2 + > co-doping regulation strategy, the material is synthesized by an oleic acid-octadecene liquid phase method, and the X-ray excitation afterglow intensity of Pr < 3 + > is improved by about 110 times by utilizing the synergistic effect that Cs < + > enhances X-ray absorption and Mg < 2 + > optimizes a carrier shallow-deep trap level; the material is prepared into the high-light-transmittance rare earth nano flexible scintillation screen with the resolution ratio of 20.01 lp / mm. According to the invention, zero-noisy-point time-delay imaging after low-dose X-ray transient irradiation is realized, continuous irradiation is not needed, the radiation dose is lower, and the method is mainly applied to the field of X-ray time-delay imaging of low-dose medical diagnosis and industrial nondestructive testing. The method does not need continuous X-ray irradiation, and has important application value in the fields of medical diagnosis, industrial nondestructive testing and the like.

The invention discloses a floating interactive intelligent display chip based on dynamic distance sensing and a preparation process, and relates to the field of integrated chip preparation, the floating interactive intelligent display chip comprises a substrate layer, a buffer layer, an intrinsic layer, a multi-quantum well layer, a barrier layer, a source electrode, a grid electrode, a p-GaN layer, an anode and a drain electrode, the buffer layer, the intrinsic layer, the multi-quantum well layer and the barrier layer are sequentially arranged on the substrate layer, and the source electrode, the grid electrode, the p-GaN layer, the anode and the drain electrode are sequentially arranged on the substrate layer. The source electrode is arranged on one side of the upper surface of the barrier layer, the grid electrode is arranged in the middle of the upper surface of the barrier layer, the p-GaN layer is arranged on the other side of the upper surface of the barrier layer, and the anode and the drain electrode are sequentially arranged above the p-GaN layer. An InGaN / GaN multi-quantum well structure is embedded into a p-GaN HEMT epitaxial layer structure to form a light-emitting HEMT structure, and a driving transistor, a light source and a photoelectric detector are subjected to monolithic integration, so that a floating interactive intelligent display chip with an epitaxial integrated structural characteristic is realized.

The utility model discloses a novel fish lure with noctilucent effect, including the fish bait main part, the lateral surface of fish bait main part is equipped with two first recess and second recess, and the first recess and second recess are symmetric distribution, and the both ends of fish bait main part are installed with two connecting rings, the utility model discloses a first recess and second recess etc. are arranged, and the fishing line and the fish hook are installed on the fish bait main part through two connecting rings, when the fishing line is pulled upward when the fish bait main part is thrown in the water and fishes, the fish bait main part will pull the surrounding water, and the position and shape of first recess and second recess determine the flow direction and speed of water, after the water enters first recess and second recess, due to the change of the flow rate of water around because of the water distribution, the air bubble will be produced, these air bubbles rise in the water, form a kind of dynamic bubble flow, and the bubble flow can simulate the air bubble produced when the aquatic insects, small fish and other organisms swim and struggle in the water, attract the predatory fish to come and attack, and then play the effect of fish lure.

The application discloses a kind of multispectral nanocluster doped multiple coating light concentrator and its method, including preparation substrate layer, preparation light emitting layer and preparation anti-reflection function layer, multispectral nanocluster doped light emitting layer is coated on substrate layer, anti-reflection function layer is coated on light emitting layer, the multispectral nanocluster is using Eu 3+ 、Tb 3+ 、Ce 3+ Ion or any combination thereof induced nanocluster of agglomerated polymer formation, the light emitting layer is obtained using multispectral nanocluster doped resin, for the absorption of incident short-wave light and conversion into characteristic emission light;The anti-reflection function layer is coupled to the outermost layer of light emitting coating, for limiting the light quantum conduction in coating, using different refractive index coating to limit the light quantum conduction in coating, to lock the fluorescent light quantum escape emitted by inner layer light emitting material, while, also can play the role of reducing interface reflection loss and improving the injection efficiency of incident light to light emitting layer.

This invention relates to the field of red luminescent materials, specifically disclosing a europium-doped sodium manganese mica red luminescent material, its preparation method, and its applications. The general chemical formula of the europium-doped sodium manganese mica red luminescent material is NaMg. a Mn 3‑a AlSi3O 10 F2:xEu 2+ x = 2 mol%–5 mol%, a = 2.4–2.8. This invention uses sodium manganese mica as the luminescent matrix and Eu... 2+ As a sensitizer, some of the Mg atoms in fluorophlogopite are located in octahedral positions. 2+ Mn 2+ Replaced by Mn 2+ It appears in the matrix as an activator; Eu 2+ Doping into the matrix, in Eu 2+ →Mn 2+ Under the action of energy transfer, Mn 2+ The red light emission is greatly enhanced; through Na + interlayer cations K in manganese mica + By exchanging and regulating the lattice of the mica matrix, europium-doped sodium manganese mica red luminescent material has great application potential in the field of LEDs for plant growth.

In some embodiments, the display device includes an anti-reflective pattern or columnar spacer disposed between the light-emitting diode and the diaphragm layer and comprising a blue colorant. Blue light reflected from the anti-reflective pattern or columnar spacer is almost imperceptible. Image quality can be improved by preventing rainbow spots (or blotches) caused by reflections of external light. Since blue light emitted from the light-emitting diode can pass through the anti-reflective pattern and / or columnar spacer, the light intensity emitted from the light-emitting diode can be increased.

The preparation method comprises the following steps: dissolving a cesium source, a copper source and an optional doping element source in a mixed solvent consisting of a polar aprotic solvent and organic carboxylic acid according to a volume ratio of (95: 5)-(85: 15) to prepare a clear precursor solution; placing the solution in a rotary evaporator, carrying out rotary evaporation for 30-180 min at a water bath temperature of 80-120 DEG C and a rotation speed of 2-10 rpm, and directly crystallizing in a bottle to obtain a solid product; and washing and drying to obtain the copper-based halide scintillator. The method is simple in process, mild in condition, recyclable in solvent and suitable for macro preparation. The crystal structure of the obtained scintillator is A3Cu2X5: M (wherein A is Cs < + >, X is one or more of Cl <->, Br <-> and I <->, and M is a doping element), and the scintillator has good scintillation performance.

The application discloses a kind of transmission type three-layer composite structure fluorescent ceramic for laser illumination and a preparation method thereof, and the fluorescent ceramic is three-layer composite structure from top to bottom in turn (Re 1‑x Ce x )3Al5O 12 Yellow-green fluorescent layer, transparent high-thermal-conductivity heat-dissipation layer, (A 1‑y Ce y )3(Al 1‑z B z )5O 12 Red fluorescent layer. The preparation method comprises the following steps: placing yellow-green fluorescent ceramic obtained by dry pressing into the bottom of a copper mold, pouring magnesium-aluminum spinel molten liquid into the preheated copper mold, placing red fluorescent ceramic above the molten liquid, and placing the composite structure material obtained after cooling in a muffle furnace for crystallization treatment to obtain the composite structure fluorescent ceramic of yellow-green fluorescent layer / transparent high-thermal-conductivity heat-dissipation layer / red fluorescent layer. The method can realize good connection and combination between different ceramic matrices, and has the advantages of simple process and low cost. The obtained transmission type composite structure fluorescent ceramic can maintain higher luminous intensity at high temperature, and excellent color rendering property can be obtained.

The invention discloses a targeted modified fungal luciferase protein and application thereof in enhancing the bioluminescence intensity of fungi or plants. The invention aims to solve the problems of subcellular localization disorder and activity loss caused by deletion of natural membrane localization signals of fungal luciferase in heterologous systems such as plants and the like. The invention creatively provides an innovative positioning reconstruction strategy: removing a natural membrane positioning sequence at the N end of the Luz protein, and then carrying out double modification on the N end and the C end. The method specifically comprises the following steps: fusing endoplasmic reticulum targeting signal peptide at the N end to guide a target protein into an endoplasmic reticulum cavity; meanwhile, endoplasmic reticulum retention signal peptide is fused at the C end of the Luz protein, so that the Luz protein is stably retained in an endoplasmic reticulum, subcellular localization of the Luz protein is accurately reconstructed, Luz is ensured to be localized into cytoplasm, and the Luz protein is prevented from entering a secretion path, so that the expression level and activity of the Luz protein in a fungus or plant system are remarkably improved, and the bioluminescence intensity of fungi or plants is remarkably enhanced.

The invention discloses a preparation method and application of a high-efficiency optical communication waveband luminescent material, and belongs to the field of luminescent material preparation, the chemical general formula of the luminescent material is as follows: the luminescent material comprises a matrix with a double perovskite structure and ions doped in the matrix; wherein the luminescent material has a characteristic emission peak at the wave band of 1500 to 1600 nm under the excitation of ultraviolet light. The process is simple to operate, good in reproducibility, low in energy consumption and extremely easy for large-scale production.

The application provides carbon nanodots with red anti-Stokes luminescence characteristics and a preparation method and application thereof, relates to the field of carbon nanomaterials, and the carbon nanodots are prepared by using o-phenylenediamine as raw material, mainly have a main emission peak in a red light-near infrared region, and have anti-Stokes emission characteristics in a protic solvent. The anti-Stokes luminescence of the carbon nanodots with red anti-Stokes luminescence characteristics is derived from phonon-assisted single-photon absorption, can be excited by a continuous laser light source, and the anti-Stokes luminescence intensity increases with the increase of temperature. The carbon nanodots with red anti-Stokes luminescence characteristics can be applied to anti-Stokes fluorescence imaging and optoelectronic devices as anti-Stokes imaging reagents.

The invention relates to the technical field of fluorescent nano sensors, in particular to a synthesis method of a fluorescent nano sensor for monitoring the content of ferric ions in sewage. The method comprises the following steps: 1, carrying out anhydrous and anaerobic treatment on a reactor, cooling to room temperature, adding an F127 or P123 solution into the reactor, and adding 10-ethyl-3, 7-diformaldehyde phenothiazine under a stirring condition to synthesize fluorescein isothiocyanate with the concentration of (1-9) * 10 <-4 > mol / L; and 2, adding ethanol into fluorescein isothiocyanate, fully stirring, adding tetraethoxysilane, reacting, adding a terminator, continuously stirring, filtering by using a water-based filter membrane, and dialyzing by using deionized water until particles are neutral, thereby obtaining the fluorescent nano sensor. The size of the synthesized fluorescent nano sensor is lower than 20 nm, the water compatibility is good, the luminous intensity in water is high, the online detection capability is achieved, the detection method is visual and effective, and the method can be suitable for chemical sewage and domestic sewage.

The invention provides a tumor targeting nano-drug as well as a preparation method and application thereof. Comprising rare earth fluorescent nanoflowers, the nanoflowers are formed by aggregation of nanoparticles composed of crystal nucleuses and shell layers, the crystal nucleuses are rare earth fluorescent nanocrystals, the rare earth fluorescent nanocrystals are rare earth nanoparticles, and the shell layers are alkaline earth metal ion shell layers coating the surfaces of the crystal nucleuses; the surface of the nanoflower is partially or completely covered with a functional biomolecular layer. The nano-drug has a relatively large gap, a relatively large specific area, efficient luminescence and high targeting property; according to the present invention, the fluorescent material has good light emitting performance in the visible light region and the near-infrared light region, and particularly has strong light emitting performance in the near-infrared second region 1400-1700 nm wave band, such that the application of the fluorescent material in the deep tissue penetrating biological living body real-time fluorescence imaging can be easily achieved, and the living body medical image with the high resolution and the high signal-to-noise ratio can be obtained.

The application discloses a side turn light mounting assembly, a door body of a vehicle and the vehicle, and the side turn light mounting assembly comprises a mounting cover plate and a turn light component, the mounting cover plate is provided with a first light transmission area; the turn light component is arranged on one side of the mounting cover plate and comprises a shell and a light emitting element, the shell is provided with a second light transmission area which is arranged opposite to the first light transmission area, and the light emitting element is arranged in the shell; and light emitted by the light emitting element is adapted to be emitted out through the first light transmission area and the second light transmission area. According to the side turn light mounting assembly provided by the application, the turn light component is mounted in the mounting cover plate, and the mounting cover plate is connected with the vehicle body; therefore, the joint gap of the vehicle body is overlapped with the modeling feature line as much as possible, the additional joint gap of the vehicle body is reduced, and the appearance is improved.

This invention discloses a rare-earth-doped optical imaging film and its preparation method. The method specifically includes: providing an optical glass substrate and pre-treating its surface; sputtering a base layer onto the surface of the optical glass substrate; depositing a rare-earth-doped layer onto the surface of the base layer; etching micro / nano structures onto the surface of the doped layer; using the micro / nano structures to enhance the luminescence efficiency of the doped layer; depositing a hydrophobic layer onto the surfaces of the doped layer and the micro / nano structures; and annealing the optical glass substrate forming the base layer, doped layer, and hydrophobic layer to obtain the rare-earth-doped optical imaging film. Through optimized design of the base layer, doped layer, and micro / nano structures, the optical imaging film exhibits higher luminescence efficiency, lower light loss, and maintains stable optical properties during long-term use. Therefore, this invention solves the technical problem of the imbalance between high refractive index and low absorption loss in existing optical imaging films.

The invention relates to a high-brightness-ratio chip coarsening etching solution and a preparation method and application thereof, and the high-brightness-ratio chip coarsening etching solution comprises the following components by weight: 20-50 parts of quaternary ammonium hydroxide; 20-50 parts of ammonium salt; 1-15 parts of a buffer agent; 0.1 to 1 part of a surfactant; and 30-50 parts of ultrapure water. The addition of the buffer agent can inhibit the generation of precipitates, balance the pH and Factivity, control the etching rate, form a uniform and fine pyramid structure on the surface of the epitaxial layer, and avoid the problem of over-etching caused by too fast local micro-chemical reaction; and meanwhile, the buffer agent can also enable the quaternary ammonium hydroxide to be uniformly adsorbed on the LED chip, so that further lateral erosion is avoided.

The utility model provides an LED chip. The LED chip comprises a substrate, a first electrode layer in bonding connection with the substrate, an epitaxial laminated layer located on the surface of the side, away from the substrate, of the first electrode layer, a first insulating layer, a first extension electrode, a second insulating layer and a second extension electrode. The epitaxial laminated layer comprises a plurality of light-emitting structures, three-dimensional stacking and interconnection among layers are realized, and the light-emitting structures are connected in parallel through the first expansion electrode and the second expansion electrode, so that under the condition that the voltage of the LED chip is not increased, larger current can pass through the LED chip, and the wavebands of emergent light of the light-emitting structures can be flexibly selected to realize light mixing. Moreover, the epitaxial laminated layer is provided with a plurality of first grooves, and the first expansion electrode and the second expansion electrode share the first grooves to perform current expansion injection without respective grooving to realize current expansion injection, so that uniform transmission of current can be ensured, too much light-emitting area does not need to be compressed, and the light-emitting area is maximized.

The application belongs to the technical field of luminescent substrate liquid preparation, and particularly relates to a single-component acridinium ester luminescent substrate liquid and a preparation method thereof. The single-component acridinium ester luminescent substrate liquid comprises the following raw materials: sodium hydroxide, urea peroxide, N-methyl pyrrolidone, a surfactant, sodium percarbonate, a stabilizer, triton 405 and a catalyst, does not contain hazardous components, and is safer to use. The luminescent substrate liquid has the advantages of high luminescent intensity, low background signal, good stability and thermal stability, low cost, convenient use and the like. The preparation method of the luminescent substrate liquid is simple, and the luminescent substrate liquid can be used in all types of magnetic microparticle chemiluminescence acridinium ester projects.

The present application relates to the field of fluorescent powder preparation, especially to a red light fluorescent powder coated with quantum dots and a preparation method and application thereof.A red light fluorescent powder with high light-emitting thermal stability and high temperature resistance is excited by blue light, and the general formula of the combination ratio is K 1.9 (MEA) 0.1 TiF6: x Mn 4+ @GQDs y mg / mol ; wherein 0.01<= x <=0.12, 1<= y <=10.The preparation method is ion exchange method and hydrothermal synthesis method, the raw materials are mixed and stirred at room temperature, then KF*2H2O, HF, K 1.9 (MEA) 0.1 TiF6: x Mn 4+ and GQDs are mixed and fully reacted, and the obtained mixture is washed and dried to obtain the final product.The fluorotitanate red light fluorescent powder of the present application can be excited by the blue light emitted by InGaN chip, has excellent high temperature fluorescent performance and heat resistance, and has good market prospect.

The present application relates to a TAL H180 The application relates to application of a gene mutant in increasing biosynthesis amount of 3-aryl acrylic acid or increasing light emission intensity of an organism or a cell. The application provides an innovative solution for creating an efficient self-luminous plant, and can be widely applied to the fields of biosensor development, in-vivo imaging, ornamental plant cultivation and the like, and has important scientific value and broad application prospect.

This invention relates to a luminescent composite film material and its preparation method, belonging to the field of film materials. The preparation of the luminescent composite film material includes the following raw materials: an inorganic salt precursor for forming Cs3Cu2I5, an antioxidant, an organic solvent, and a polymer; the inorganic salt precursor for forming Cs3Cu2I5 includes cesium iodide and cuprous iodide, etc. Compared with existing technologies, this invention mainly improves the compatibility and film-forming performance of the film-forming system with Cs3Cu2I5 by optimizing the solvent and film-forming polymer, selecting specific organic solvents and specific polymers for combination, and utilizing solvent evaporation to induce in-situ crystallization of the inorganic salt precursor and polymer film formation, significantly improving the stability of the obtained film material under high heat and humidity environments. Simultaneously, this material has excellent luminescence intensity and can be applied to flexible displays, solid-state lighting, and anti-counterfeiting labels, with wide applications.