20results about How to "Improve luminosity" patented technology

The invention discloses a radioactive medical isotope Ra-223 stably-labeled rare earth nano diagnosis and treatment preparation as well as a preparation method and application thereof. According to the invention, by constructing a dual protection mechanism of the shell layer and the functional biomolecular layer, the Ra-223 is effectively packaged, the recoil nuclei of the Ra-223 are reserved at the tumor part and are prevented from escaping to the surrounding environment of the tumor, the safety of the Ra-223 treatment process can be enhanced, the radioactive energy is ensured to accurately act on the focus, and the treatment effect of the Ra-223 is improved. Meanwhile, the damage risk to healthy tissues is minimized.

This invention belongs to the field of near-infrared luminescent materials technology, and provides a tungstate-based broadband near-infrared luminescent material, its preparation method, and its applications. The preparation method includes: (1) weighing SrCO3, La2O3, WO3, and Bi2O3 raw material powders respectively; (2) grinding the weighed raw material powders in an agate mortar, obtaining a mixture after grinding, and pouring the mixture into a clean alumina crucible; (3) transferring the alumina crucible containing the mixture to a high-temperature box furnace for sintering to obtain the tungstate-based broadband near-infrared luminescent material. This tungstate-based broadband near-infrared luminescent material can achieve continuous control of luminescence behavior by adjusting the concentration of doped ions, the external field temperature, and the excitation wavelength. This tungstate-based luminescent material has wide applications and can be used in lighting, bioimaging, temperature sensing, anti-counterfeiting coding, multi-channel optical information storage / encryption, and many other fields.

This application provides a light-emitting diode (LED) and its fabrication method. The LED includes a stress-relieving layer and a quantum well layer protection structure. The quantum well layer protection structure includes at least one sequentially deposited cyclic structure. Each cyclic structure includes: an AlGaN barrier layer, a first AlN protective layer, a second AlN protective layer, a first AlInN protective layer, an InGaN well layer, a second AlInN protective layer, a third AlN protective layer, and a fourth AlN protective layer sequentially deposited on the stress-relieving layer. The In content in both the first and second AlInN protective layers gradually increases from away from the InGaN well layer to closer to the InGaN well layer. By setting the first and second AlInN protective layers, a high In content is ensured in the InGaN well layer, thereby obtaining a high-quality, high-efficiency red-yellow light InGaN well layer and ensuring the luminous efficiency of the LED.

The invention relates to the technical field of photovoltaic modules, and particularly discloses a tetraphenyl ethylene-benzotriazole derivative compound and application thereof in the photovoltaic field. The absorption spectrum of the tetraphenyl ethylene-benzotriazole derivative compound disclosed by the invention can be subjected to red shift to 420 nm, so that high-energy ultraviolet light can be completely absorbed; the maximum emission wavelength of a fluorescence emission spectrum is more than 440nm and even can reach 500nm, so that the light utilization level of the crystalline silicon solar cell is improved; the absolute light-emitting quantum efficiency is very high, and the converted wavelength can be better utilized by a photovoltaic device. The substituted tetraphenyl ethylene part contained in the derivative compound has AIE performance, and the fluorescence quenching effect of traditional small organic molecules in high concentration, solid state and aggregation state is avoided. The light conversion film can overcome the problem that the fluorescence quantum yield is remarkably reduced in the laminating process, the performance of the film is not affected when the phenomena of precipitation, agglomeration and the like of auxiliaries in the film occur, and the light conversion film is used for preparing a photovoltaic module.

This invention provides a carbazole compound, an organic electroluminescent device, and a display device, relating to the field of organic optoelectronic display technology. Through structural design of the carbazole compound, this invention yields a carbazole compound with excellent performance. The organic electroluminescent device prepared using this compound as the host material for the light-emitting layer exhibits low driving voltage and high current efficiency.

The invention belongs to the technical field of fluorescent ceramic preparation, and relates to an enhanced near-infrared luminescence MgAl2O4: Cr < 3 + > fluorescent ceramic and a preparation method thereof, and the preparation method comprises the following steps: dissolving Mg (NO3) 2.6 H2O, Al (NO3) 3.9 H2O and Cr (NO3) 3.9 H2O in deionized water, then adding urea, stirring and dissolving; transferring the mixed solution into a reaction kettle for hydrothermal reaction to obtain MgAl2O4: Cr < 3 + > powder; adding a sintering aid CaF2 into the MgAl2O4: Cr < 3 + > powder, and carrying out ball milling and mixing; the ball-milled powder is poured into a mold to be compacted and then put into an SPS sintering furnace to be sintered; the sintered ceramic is subjected to annealing treatment; the surface of the annealed ceramic is sequentially subjected to coarse grinding and polishing operation, and the MgAl2O4: Cr < 3 + > fluorescent ceramic is obtained. According to the method, the luminescent property of Cr < 3 + > is remarkably promoted, and meanwhile, the high density and excellent mechanical property of the ceramic are guaranteed.

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 invention belongs to the technical field of nano material preparation, discloses a zero-dimensional perovskite nanocrystalline large-scale preparation method based on a room-temperature self-assembly strategy, and aims to solve the technical problems that in the prior art, the uniformity of a product is poor, high luminous efficiency and conductivity are difficult to achieve at the same time, and the wavelength cannot be accurately regulated and controlled. According to the method, a water-in-oil microemulsion system is adopted as a nanoreactor, and the high uniformity of nanocrystal growth is fundamentally guaranteed through a confinement reaction. The composition creatively comprises two ligands: one ligand is a pi-conjugated conductive main functional ligand with surface passivation and charge transfer functions, which solves the problem of poor conductivity caused by the traditional insulating ligand while ensuring high photoluminescence efficiency, and the other ligand is a competitive tuning ligand which forms dynamic competitive balance with the main ligand. The key problems of product uniformity, conductivity, wavelength controllability and the like are synergistically solved, and the prepared nanocrystal has high optical purity, high quantum yield and excellent conductivity.

The application belongs to the technical field of mechanical color-changing materials, and relates to a preparation method and application of a pyrylium salt organic molecule and a host-guest complex thereof. The host-guest complex comprises 2,6-di(4-methoxyphenyl)-4-phenylpyrylium p-toluenesulfonate as described in formula (I) and calix[10]urea. The complex is a smart color-changing material, and the guest molecule only shows a fluorescence color-changing behavior under the stimulation of mechanical force, and the host-guest complex shows a phosphorescence color-changing behavior under the stimulation of mechanical force.

This invention discloses a method for preparing polycrystalline fluoride composites through template-based slow-release in-situ molding, belonging to the field of inorganic luminescent functional materials technology. The method includes: providing raw materials, including at least one bulk material as a template, with the raw materials collectively providing A, B, and M ions; mixing the raw materials in a solvent and maintaining the reaction temperature for a specified time, allowing the template to slowly dissolve and release ions; the ions provided by the raw materials react with fluoride ions provided by the solvent and / or the raw materials to grow fluoride crystals in situ on the template surface, with the crystals interpenetrating and fusing to form a polycrystalline composite; after the reaction, the product is obtained by washing and drying. This invention eliminates the need for tableting, high-temperature sintering, and organic binders, and can generate polycrystalline fluorescent fluoride composites of predetermined sizes in a single self-stacking process, avoiding the defects of powder breakage and high-temperature degradation of luminescent ions in traditional two-step methods. It features high luminescence quantum efficiency, a simple process, and ease of industrial production.

The invention discloses a preparation method of an InP quantum dot based on silicon-based phosphine salt and the InP quantum dot prepared by the preparation method. The preparation method comprises the following steps: stirring and reacting an indium precursor, silicon-based phosphonium salt MP (TMS) 2 and a selectively added first zinc precursor in a solvent in an inert atmosphere at 150-220 DEG C to obtain a solution containing an InP nanocrystal nucleus, then heating to 240-310 DEG C, adding one or more of a second zinc precursor, a selenium precursor and a sulfur precursor, coating the InP nanocrystal nucleus with a shell layer, and carrying out vacuum drying to obtain the indium-selenium-sulfur-doped InP nanocrystal. The shell layer contains one or more of a zinc element, a selenium element and a sulfur element; m in the silicon-based phosphine salt MP (TMS) 2 is K, Na or Li, and TMS is [-Si (CH3) 3].

This invention belongs to the field of organic electroluminescent materials, and discloses an organic electroluminescent material, an organic electroluminescent material containing two main bodies, and an organic electroluminescent device. The organic electroluminescent material containing two main bodies disclosed in this invention includes a first main body material and a second main body material. When the organic electroluminescent material of this invention or the organic electroluminescent material containing two main bodies is applied to an organic electroluminescent device, it has low driving voltage, high luminous efficiency, and long service life.

The invention provides an anthracene compound, an organic electroluminescent device and a display device, and relates to the technical field of organic photoelectric display. Through structural design of the anthracene compound, the obtained anthracene compound has excellent performance, and the organic electroluminescent device prepared by taking the anthracene compound as a luminescent layer main body material has relatively low driving voltage and relatively high current efficiency.

The invention provides a carbazole-containing compound, an organic electroluminescent device and a display device, and relates to the technical field of organic photoelectricity. By designing the structure of the carbazole-containing compound, the obtained carbazole-containing compound has good luminescence performance, can be used for preparing the organic electroluminescent device, especially can effectively reduce the driving voltage of the organic electroluminescent device as a luminescent layer main body material in the organic electroluminescent device, and can improve the luminous efficiency of the organic electroluminescent device. And the current efficiency of the organic electroluminescent device is improved.

This utility model discloses an ambient light for rail transit, comprising a housing, a light diffusion substrate, a light source assembly, and a light-shielding layer. The housing has a mounting groove, in which the light diffusion substrate is embedded. The back side of the light diffusion substrate has a receiving slot extending along its length. The light source assembly is disposed inside the receiving slot and includes a flexible PCB board and LED particles arrayed thereon. The light-shielding layer covers the light source assembly, so that the top side of the light diffusion substrate serves as the light-emitting surface. The sidewall of the housing has a clamping structure for detachable connection. Through the above methods, this utility model has a compact structure, is easy to install, and offers rich colors. The light is concentrated and emitted from the side, achieving the purpose of a linear light source. It can effectively adapt to the complex environment of rail transit, providing a stable and comfortable lighting atmosphere inside the carriage.

The application discloses a tetraphenyl ethylene derivative, a preparation method and application as a perfluorooctyl sulfonate fluorescent probe, and the tetraphenyl ethylene derivative is characterized by a formula II. The tetraphenyl ethylene derivative has obvious aggregation-induced emission effect, excellent luminescence performance, and can realize 'on' detection of perfluorooctane sulfonate. The preparation method of the perfluorooctane sulfonate fluorescent probe of the tetraphenyl ethylene derivative is simple, the reaction condition is mild, is conducive to environmental protection, and meets the characteristics of green chemistry. The prepared tetraphenyl ethylene derivative fluorescent probe has excellent chemical stability, high sensitivity and good anti-interference ability, can realize rapid and efficient detection of perfluorooctyl sulfonate, and is expected to realize industrialization and on-site application.

The utility model discloses a roof ridge lamp, including waterproof body, lens and light emitting device, the lens includes lens main part and is used for with waterproof body of connecting the base shell, the base shell is equipped with the device space for accommodating light emitting device, the lens main part is located on the base shell, and with device space corresponds, the base shell is covered in waterproof body, to make device space form sealed space. Adopt the utility model, simple structure, easy to mass production and good waterproof effect.

This invention provides a carbazole compound and its organic electroluminescent device, specifically relating to the field of organic optoelectronic materials technology. When used as the host material of the emitting layer in an organic light-emitting device, the compound of this invention can improve the mobility of charged holes in the host material, enhancing the exciton recombination effect; simultaneously, it achieves efficient energy transfer from the host material to the doped material, and limits energy loss caused by energy backflow or exciton diffusion, thus improving the device's light-emitting performance. The compound of this invention exhibits good film-forming properties and thermal stability. When used as a capping layer, it can improve optical efficiency and reduce light loss reflected by nearby electrodes during emission, thereby improving device performance. The preparation method of the compound of this invention is simple, the raw materials are readily available, and it can be widely applied in fields such as organic thin-film transistors and panel displays, showing good application effects and industrialization prospects.

The application relates to the technical field of detection, in particular to a lead halide perovskite quantum dot material and a preparation method and application thereof. The method comprises the following steps: mixing a lead source, 1-octadecene, oleylamine, oleic acid and a cesium source, and then carrying out ultrasonic treatment to obtain a mixed solution; placing the mixed solution in a tip ultrasonic instrument, first activating at low power, then improving the power to carry out ultrasonic synthesis reaction, washing the obtained product with a first organic solvent, dispersing the product in a second organic solvent, adding a surfactant, again carrying out ultrasonic treatment and tip ultrasonic activation, and finally preparing the lead halide perovskite quantum dot material. The lead halide perovskite quantum dot CsPbX3 (X is Cl, Br or I) material obtained by the method has excellent quantum dot luminescence performance, good stability in a reverse microemulsion system, can introduce a to-be-detected substance, and realizes quantitative analysis through fluorescence or chroma testing.

The application discloses a lanthanide-actinide heterometallic coordination polymer material and a preparation method and application thereof, and belongs to the technical field of metal organic polymer materials. 2+ The lanthanide-actinide heterometallic coordination polymer material is prepared through precise integration in a one-dimensional structure. The preparation method is simple in operation and easy to realize repeated preparation. The prepared lanthanide-actinide heterometallic coordination polymer material has both characteristic luminescence of lanthanide elements and structure guiding characteristics of actinide ions, is highly ordered in structure and has excellent radiation stability. Compared with other scintillators, the prepared lanthanide-actinide heterometallic coordination polymer material has sensitive scintillation response to X rays, high light output and excellent energy resolution, and has great potential in X ray imaging.