241results about How to "High luminous intensity" patented technology

The invention relates to a method for improving luminous intensity of a plant by introducing an exogenous caffeic acid synthesis pathway. A TAL gene and a P450 gene are introduced into a plant body to obtain a remarkable effect of increasing the expression quantity of caffeic acid. Due to the fact that introduction of the TAL gene and the P450 gene promotes deamination of the L-DOPA, the accumulation amount of the L-DOPA is increased, and then the expression amount of caffeic acid in the plant is effectively increased. Based on the pathway, the synthesis of fluorescein in the plant is increased, so that the luminous intensity of the plant is enhanced.

The invention relates to grape polyketide synthase and application of the grape polyketide synthase in realizing plant luminescence, the grape polyketide synthase can be used for synthesizing milk tree alkali, and then fluorescein is synthesized through other proteins so that plants can emit light. The luminous intensity of the obtained plant is remarkably improved, and a visible photograph of the luminous plant can be obtained through a mobile phone or a camera lens without long-time exposure; the luminous phenotype of the plant can be easily observed by naked eyes.

The invention discloses a temperature sensing material based on dual-mode thermal response up-conversion luminescence and a preparation method and application thereof, and belongs to the technical field of optical temperature sensing. The chemical formula of the material is Bi (4-y) Ti (0.5) M (0.5) O8X: REy, wherein M is W or Mo, X is Cl or Br, RE is Er or Yb / Er, and a hydrothermal-molten salt method series synthesis strategy is adopted for preparation. Different from a traditional thermal quenching material, according to the dual-mode thermal response up-conversion luminescence temperature sensing material Bi4Ti0. 5M0. 5O8X, visible light is weakened along with temperature rise, and meanwhile 800 nm near-infrared luminescence is enhanced. By utilizing the characteristic that the up-conversion luminescence intensity has opposite response to temperature change, the up-conversion temperature sensing material disclosed by the invention has relatively high optical temperature sensitivity in a fluorescence intensity mode and a fluorescence lifetime mode, and is an optical temperature sensing material with a wide temperature measurement range, which can be used for high-temperature environment detection; the method has great application potential in the field of optical temperature sensing.

The invention provides an NIR-IIb / c rare earth nanoparticle fluorescent probe as well as a preparation method and application thereof. The fluorescent probe sequentially comprises a core, an active shell and an inert shell from inside to outside, wherein the core comprises Tm < 3 + > ions and Er < 3 + > ions, and the active shell comprises Er < 3 + > ions, Yb < 3 + > ions and Ce < 3 + > ions. The fluorescent probe provided by the invention has an efficient energy transfer system, not only has bright luminescence in an NIR-IIb wave band (1500-1700 nm), but also has luminous intensity increased by dozens of times in an NIR-IIc wave band (1700-1900 nm) compared with that of a traditional probe. The hydrophilic modification method of the probe is also improved, and the biocompatibility of the probe is improved by a multi-layer polymer cross coating method, so that the probe still has good luminescence property in an organism, and the penetration depth and resolution of biological tissues during imaging are improved.

The invention discloses a colored fluorescent particle for electrophoretic display, and relates to the field of photoelectric display, the colored fluorescent particle is of a core-shell structure, and the colored fluorescent particle sequentially comprises a core, a middle layer and a shell layer from inside to outside; the core is a pigment unit, the middle layer is a quantum dot layer coating the surfaces of pigment particles, the shell layer comprises one or more high-molecular polymers selected from polylauryl methacrylate and polymethyl methacrylate, and the surface of the middle layer is coated with the shell layer; the color fluorescent particles comprise intrinsic primary colors presented by the pigment units and compensation fluorescence excited by the quantum dot layer under light; and the compensation fluorescence is matched with the intrinsic primary color. In addition, the invention also provides a preparation process of the colored fluorescent particles. The colored fluorescent electrophoretic particle provided by the invention is pure and full in color and luster, and is more gorgeous in color under the excitation of ultraviolet rays.

The invention provides a europium ion doped titanate compound as well as a preparation method and application thereof, and relates to the technical field of rare earth luminescent materials. The chemical formula of the titanate compound provided by the invention is K2Ti6O13: xEu < 3 + >, the titanate compound is in a monoclinic system. A proper amount of Eu < 3 + > ions are doped in K2Ti6O13, so that the prepared rare earth fluorescent powder has higher color rendering index and quantum yield, and the luminescent property of a white light LED can be greatly improved; as K2Ti6O13 has good electrochemical performance and relatively high conductivity, the rare earth fluorescent powder provided by the invention can also be used in the fields of illumination, display, photocatalysis and energy storage. And on the other hand, the preparation method provided by the invention is simple in process, mild in condition, convenient for large-scale production and wide in development and application space.

The invention provides an LED chip, a preparation method thereof and a display device. The preparation method of the LED chip comprises the following steps: providing a substrate; growing a non-doped GaN layer on the substrate; an epitaxial layer is formed on the surface of the side, away from the substrate, of the non-doped GaN layer, the epitaxial layer is etched to form a plurality of light-emitting tables arranged at intervals, and each light-emitting table comprises a table top away from the side of the substrate and a side face connected with the table top; and growing a quantum dot layer on the surface of one side, far away from the substrate, of the light-emitting table, wherein the quantum dot layer at least comprises a plurality of quantum dots distributed on the side surface. The etching damage, introduced by etching, on the side surface of the light-emitting table can be efficiently and precisely repaired in a targeted manner; the high-density quantum dots grown on the side face of the light-emitting table can increase the scattering sectional area of light emitted by the active area of the light-emitting table, so that the light-emitting efficiency is enhanced, and the light-emitting intensity of the LED is greatly improved.

The invention provides an Eu < 3 + >-doped aluminoborate red-orange luminescent material as well as a preparation method and application thereof, and belongs to the technical field of luminescent materials. Wherein the chemical formula of the Eu < 3 + >-doped boron aluminate red and orange luminescent material is Li4Al2B4O11: 4xEu < 3 + >, x is the mole number of Eu < 3 + > replacing Li < + >, and x is more than or equal to 0.005 and less than or equal to 0.04. The material can be effectively excited by light with near ultraviolet and blue light wavelengths, and emits a sharp spectrum with a wavelength peak value at 593 nanometers, and the red and orange light has pure chromaticity, high luminous intensity and good thermal stability. The Eu < 3 + >-doped aluminoborate red-orange luminescent material can be combined with a near-ultraviolet or blue-light semiconductor chip to prepare a corresponding white-light LED (light-emitting diode) lighting device.

The invention discloses an all-inorganic perovskite nanocrystalline composite material and a preparation method and application thereof, and belongs to the technical field of luminescent materials. The preparation method comprises the following steps: mixing lead bromide and octadecene, carrying out first heat treatment, adding oleic acid and oleylamine, and carrying out second heat treatment to obtain a lead bromide precursor solution; mixing and reacting the lead bromide precursor solution with the cesium oleate solution, and cooling to obtain an all-inorganic perovskite nanocrystalline mixed solution; and mixing the full-inorganic perovskite nanocrystalline mixed solution with zinc stearate and dodecanethiol for reaction, centrifuging, and removing the solvent to obtain the full-inorganic perovskite nanocrystal. The preparation method is easy to operate, high in reproducibility, clean, free of pollution and suitable for large-scale production, the effective component of the prepared all-inorganic perovskite nanocrystalline composite material is a heterojunction structure composite material attached with zinc sulfide microspheres, the stability is good, the photoluminescence intensity is high, the sensitivity to pressure is high, and the application prospect is wide. Meanwhile, excellent sensitivity is also realized under low pressure.

The invention relates to the technical field of inorganic luminescent materials, in particular to a mechanoluminescent composite material and a preparation method thereof. The invention provides a mechanoluminescence composite material. The mechanoluminescence composite material comprises aluminate modified by metal fluoride and rare earth doped ions doped in the aluminate modified by the fluoride, the metal fluoride modified aluminate comprises aluminate and metal fluoride, and a heterojunction is formed between the aluminate and the metal fluoride. The mechanoluminescence composite material has high crystallinity and high purity, and also has mechanoluminescence properties of high brightness and high repeatability.

The invention discloses a preparation method and application of a transition metal ion sensitized rare earth fluoride long-afterglow nano material, and belongs to the technical field of biological nano materials. The NaYF4: Tb, Mn long-afterglow nano scintillator is synthesized through a solvothermal decomposition method, divalent Mn < 2 + > with smaller ion radius and rare earth ions Tb < 3 + > are co-doped in a rare earth fluoride NaYF4 matrix, Tb < 3 + > is used as a luminescence center ion, Mn < 2 + > is used as a sensitizer, doping of heterovalent Mn < 2 + > ions can occupy crystal sites to adjust a local crystal field, and doping of the heterovalent Mn < 2 + > ions is realized. Vacancies or gaps can be generated, so that afterglow emission is enhanced; the obtained nano scintillator is combined with a substrate material PDMS to prepare a flexible transparent film, a clear object image is successfully presented under irradiation of X rays with a low dosage rate of 278 [mu] Gy.s <-1 >, and long-term optical stability can still be maintained after continuous 20 times of cyclic irradiation.

The invention belongs to the technical field of perovskite batteries, and particularly relates to a perovskite precursor and a preparation method thereof. According to the invention, the perovskite precursor is prepared into an emulsion form, Ge < 4 + > is adopted to prepare the perovskite precursor, and the silicon dioxide nano oxide, the additive and the stabilizer are introduced into the emulsion precursor, so that the moisture resistance and hydrophobicity of the perovskite thin film are improved, and tiny liquid drops in the emulsion are used as a template for perovskite crystal growth, so that the perovskite thin film is prepared. The size and form of perovskite crystals are controlled, the silicon dioxide nano oxide can passivate defect states on the surface of perovskite and reduce recombination of electron-hole pairs, and a precursor in the emulsion is also beneficial to passivating surface defects in the curing process, reducing defect state density and improving device performance. The device prepared by using the perovskite precursor prepared by the invention has good photoelectric property and stability.

The invention discloses a multi-element rare earth doped vanadate-based luminescent material and a preparation method thereof, and belongs to the field of rare earth luminescent material preparation. A multi-element rare earth doped vanadate-based luminescent material comprises A, B and C, A, B and C are rare earth elements, A, B and C are different, the chemical formula of the luminescent material is (AxB1-x) 1-yVO4: Cy, x is more than or equal to 0.10 and less than or equal to 1.00, and y is more than or equal to 0.01 and less than or equal to 0.10; the invention can overcome the problems of general luminous intensity, poorer stability and shorter service life of the luminescent material.

The invention discloses fluorescent powder, a preparation method thereof and a light-emitting device. The chemical composition of the fluorescent powder is CaY < 2-y > Mg < 2-x > Ge3O12: xNi, yA or CaY < 2 > Mg < 2-x > Ge3O12: xNi, yA, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt, 0 lt X is smaller than or equal to 0.6, y is larger than or equal to 0 and smaller than or equal to 0.6, and A is one of Zr, Bi, Sn, Sb or Cr. The fluorescent powder provided by the invention can generate broadband near-infrared fluorescence emission with an emission band of 1200-1700nm and an emission peak of 1500nm by being effectively excited by a wavelength in a spectral region of 250-880nm, and can be used as a light conversion material of a near ultraviolet or blue light LED (Light Emitting Diode) chip with the wavelength of 390-460nm, so that the preparation of a broadband near-infrared light emitting device is realized.

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.

The invention discloses a narrow-band blue light molecule as well as a preparation method and application thereof. Two donor units are introduced into a fluorene skeleton and form a staggered structure with multiple resonance units in space to regulate and control the space charge transfer intensity, on one hand, the reverse intersystem crossing rate can be improved to improve the performance and efficiency of the device, and on the other hand, efficient light emission of a narrow band is maintained. The invention further discloses a preparation method and application of the material. The compound can be used as a novel luminescent molecule with high performance, high color purity and high quantum efficiency. The narrow-band blue-light molecule has huge application potential in the aspects of preparation of luminescent materials, luminescent devices, electronic technologies and the like, and has obvious and clear prospects in the fields of display technologies and solid-state illumination luminescence.

The invention provides an optical fiber image transmission element for ultraviolet detection and a preparation method and application thereof, and the preparation method comprises the steps: carrying out the pickling of the cross section of one end of the optical fiber image transmission element, enabling the cross section to form a microporous structure with the depth of 10-50 [mu] m, and obtaining a pickled optical fiber image transmission element; a fiber core of the optical fiber image transmission element is made of an easily acid-etching material, and a cladding is made of an acid-etching-resistant material; the preparation method comprises the following steps: dissolving CsX and PbX2 in an organic solvent to obtain a precursor solution; wherein X is at least one of Cl, Br and I; the precursor solution is heated, gas is introduced, the gaseous precursor solution is brought to the microporous structure, the precursor solution reacts at the microporous structure in a gaseous form to generate CsPbX3 quantum dots, the microporous structure is filled, and a filled optical fiber image transmitting element is obtained; and the protection window is arranged on the filling surface of the filling optical fiber image transmission element, so that the optical fiber image transmission element for ultraviolet detection is obtained, the optical fiber image transmission element has the advantages of high brightness and high resolution, and the efficiency and the resolution of an ultraviolet detector can be effectively improved.

The invention provides a light-emitting diode, a preparation method and LED equipment, the light-emitting diode comprises a substrate and an epitaxial structure, the epitaxial structure comprises an N-type semiconductor layer and a P-type table, the P-type table comprises a multi-quantum well layer and a P-type semiconductor layer, the N-type semiconductor layer is provided with a first current blocking part, and the P-type semiconductor layer is provided with a second current blocking part; the P-type semiconductor layer is provided with a second current blocking part, a third current blocking part and a transparent conductive part, the first current blocking part is provided with a plurality of first adhesion metal parts, a plurality of second adhesion metal parts are arranged between the second current blocking part and the third current blocking part, the first adhesion metal parts are provided with first reflection metal parts, and the second adhesion metal parts are provided with second reflection metal parts. And a second reflection metal part is arranged on the plurality of second adhesion metal parts. By arranging the first adhesion metal part, the second adhesion metal part, the first reflection metal part and the second reflection metal part, the metal structure has the adhesion force, and meanwhile the light reflection effect is enhanced.

The invention relates to Eu (III) doped tantalate red fluorescent powder, a preparation method thereof and application of the Eu (III) doped tantalate red fluorescent powder in pixelated LEDs, and belongs to the technical field of inorganic luminescent materials. The invention discloses Eu (III) doped tantalate red fluorescent powder, which is mainly Eu < 3 + > doped tantalate red fluorescent powder (the chemical composition is Sr2Lu1-xTaO6: xEu < 2 + >, and x is greater than or equal to 0.05 and less than or equal to 0.25). According to the Eu (III) doped tantalate red fluorescent powder, the oxide Sr2LuTaO6 is used as a fluorescent powder matrix, Eu < 3 + > is added for doping, so that strong red light emission is achieved, the Eu (III) doped tantalate red fluorescent powder is stable in structure and excellent in thermal stability, the color rendering performance of a white light LED can be remarkably improved, and pixelated LEDs (representing high luminous intensity, high brightness and high brightness) can be achieved. The high-efficiency pixelated white-light LED is expected to be realized when the high-efficiency pixelated white-light fluorescent powder is combined with green-light or yellow-light fluorescent powder in the prior art.

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 provides an intelligent mechanical response luminescent heterojunction material and a preparation method and application thereof, the chemical expression is x ZnS-(1-x) CaZnSO: 1% Mn < 2 + >, 0 < = x < = 1; the preparation method of the material comprises the following steps: (1) mixing ZnS, CaCO3 and MnCO3 according to a molar ratio of (1: 0)-(1: 1), and then adding MnCO3 accounting for 1% of the mass of the mixed powder; adding ethanol, grinding, and uniformly mixing to obtain mixed powder; (2) putting the mixed powder into a raw material reaction bottle, then putting the raw material reaction bottle into a reactor, and preparing a heat-insulating brick group to obtain a reaction device equipped with the mixed powder; and (3) preparing a microwave reaction furnace provided with a turntable capable of controlling rotation, placing the reaction device in the microwave reaction furnace for a synthetic reaction, and cooling after the reaction is finished to obtain the intelligent mechanical response luminescent heterojunction material. The material disclosed by the invention is obvious in mechanical luminescence phenomenon and high in luminescence efficiency, can directly generate the mechanical luminescence phenomenon through external force application, and can be applied to preparation of a mechanical force responsive film.

This patent application discloses an indenoquinolinone or chromenequinolinone derivative and its preparation method and application. The indenoquinolinone or chromenequinolinone derivative in this patent application is based on quinoline methyl ketone as an electron-withdrawing group, and with the help of the electron-donating ability of N in the heterocyclic ring, an indenoquinolinone or chromenequinolinone derivative organic luminescent small molecule is prepared. The quinolinone derivative containing aromatic amine groups provided in this patent application has a unique aggregation-induced emission effect, high luminous intensity, good thermal stability and good solubility, and can be used as a new type of solid luminescent molecule with good performance, low cost and highly distorted spatial structure. The quinolinone derivative containing aromatic amine groups has significant economic value in the preparation of luminescent materials, luminescent devices or smart materials, and has good application prospects in the fields of full-color display and solid-state lighting.

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 present application belongs to the technical field of fluorescent material preparation, and discloses a lutetium / cerium yellow-green phosphor for white light LED, wherein the lutetium / cerium yellow-green phosphor for white light LED comprises a matrix and cerium-containing oxide and lutetium-containing oxide shallowly doped on the surface of the matrix, wherein the shallow doping is achieved by the migration of the cerium-containing oxide and lutetium-containing oxide precipitated on the surface of the matrix into the interior of the matrix; the chemical formula of the lutetium / cerium yellow-green phosphor for white light LED is (Ce x Lu y Y (3‑x‑y‑z) M z )Al5O 12 ; Wherein, M is selected from at least one of the elements Li, Na, Mg, K, Ca, and Sc, and 0.03≤x≤0.06, 1.00≤y≤2.00, and 0.05≤z≤0.1. The present application obtains a phosphor with good thermal stability and high luminous intensity through the above design. In addition, the present application also discloses a method for preparing the above-mentioned lutetium / cerium yellow-green phosphor for white light LEDs.

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 discloses a plasmon core-shell quantum dot and a preparation method thereof, and belongs to the technical field of quantum dot luminescent materials.The preparation method comprises the steps that S1, silver nitrate and sodium hydroxide are added into methylthiouracil, then magnetic stirring is conducted at the temperature of 20-35 DEG C, ultrafiltration centrifugation is conducted through an ultrafiltration centrifuge tube, and a plasmon core-shell quantum dot solution is obtained; an inner layer silver core solution of the plasmon core-shell quantum dot is obtained; s2, sodium hydroxide, chloroauric acid and methylthiouracil are added into the inner layer silver core solution of the plasmon core-shell quantum dot, then magnetic stirring is conducted at the temperature of 20-35 DEG C, and the plasmon core-shell quantum dot is obtained. The plasmon core-shell quantum dot disclosed by the invention is high in luminous intensity, high in quantum yield, adjustable in luminous wavelength and adjustable in excitation wavelength, and can be used for preparing a luminous grating and a display device.

The present invention relates to the technical field of quantum dot light-converting agricultural film, and in particular to a rare earth-doped quantum dot composite light-converting agricultural film and a preparation method thereof. The light-converting agricultural film comprises a light-converting masterbatch with a mass fraction of 0.2-5% and a polymer matrix with a mass fraction of 95-99.8%; the light-converting masterbatch comprises a red quantum dot light-converting agent with a mass fraction of 10-50%, a green rare earth light-converting agent with a mass fraction of 1-5%, an auxiliary agent with a mass fraction of 1-10%, and a masterbatch matrix, and the red quantum dot light-converting agent is at least one of perovskite quantum dots, II-VI group quantum dots, III-V group quantum dots, IV-VI group quantum dots, carbon quantum dots, and silicon quantum dots; and the green rare earth light-converting agent comprises at least one of Tb, Dy, Ce, Ho, and Pr elements. The advantage is that by adding green rare earth materials, the green rare earth materials absorb energy under the irradiation of sunlight and transfer the energy to the red light quantum dots, thereby enhancing the luminous intensity of the quantum dots.

The invention discloses a high-load full-color transparent display film as well as a preparation method and application thereof, and belongs to the technical field of display screens. According to the invention, rare earth ions are selectively doped to obtain the green light, red light and blue light emitting nanocrystalline colloid. The structure of the light-emitting film is reasonably designed, and the epoxy resin layer, namely the near ultraviolet light blocking layer, is added between the light-emitting layers on the two sides, so that the light-emitting film of a sandwich structure is formed, and color crosstalk of transfer emission under red light and green light is inhibited. The problem that a down-transfer light-emitting display screen can only emit monochromatic light for a long time is solved, the full-color transparent screen is prepared, the load rate of the light-emitting material is remarkably improved, and the method has important economic value and social benefit.