28results about How to "Easy to dope" patented technology

The invention belongs to the technical field of light-emitting materials, and particularly relates to a near-infrared light-emitting ytterbium-doped quantum dot material and a preparation method and application thereof. According to the preparation method of the near-infrared light-emitting ytterbium-doped quantum dot material, a Yb-doped perovskite quantum dot synthesis method which is high in near-infrared light-emitting intensity, good in stability and simple in preparation is innovatively provided, short-chain amine is used in the preparation process, and the near-infrared light-emitting ytterbium-doped quantum dot material has high reaction activity, small steric hindrance and high near-infrared light-emitting efficiency. The complex ability with precursor raw materials is low, chemical bonds between halogen and metal ions are easy to open in the reaction process, and the complex is matched with long-chain amine (such as oleylamine and the like) in a perovskite quantum dot system prepared by a conventional injection method, so that doping of rare earth Yb ions is facilitated, the Yb ions smoothly enter perovskite crystal lattices, and the perovskite quantum dot is prepared. The near-infrared luminous intensity of the material is improved.

The invention relates to a high-performance silicon-based heat insulation micro-ring design method and system, and belongs to the technical field of photoelectrons. Comprising the following steps: drawing a half outer contour curve of a to-be-designed micro-ring by utilizing double Euler bending according to a free spectral range of the to-be-designed micro-ring; using the N-order Bezier curve and optimizing control point coordinates of the N-order Bezier curve according to a transmission loss minimum principle, and drawing a half inner contour curve of the to-be-designed micro-ring; wherein N is a positive integer greater than 1; the transmission loss is half micro-ring transverse electric field 0-order mode transmission loss; obtaining a half optimized micro-ring according to the half outer contour curve and the half inner contour curve; and splicing the two half optimized micro-rings into a complete micro-ring. According to the invention, serious mode loss occurring when a wider multi-mode waveguide is used and serious bending loss occurring when a small bending radius design is adopted are avoided, and the problem that the doping space of the micro-ring is narrow due to the limited waveguide width is solved. And meanwhile, the free spectral range of the micro-ring is enlarged.

The invention belongs to the technical field of batteries, and particularly relates to a doped phosphate positive electrode material and a preparation method and application thereof. The doped phosphate positive electrode material comprises a phosphate active material and a doped metal element doped in a crystal structure of the phosphate active material; according to the doped phosphate positive electrode material, under the condition that the pressure is 100-500 MPa, the maximum deformation quantity of particles is smaller than 50%, and the reversible deformation quantity is smaller than 10%. By doping the metal elements in the crystal structure of the phosphate-based active material, the structure of the doped phosphate-based positive electrode material is optimized, the structural stability of the doped phosphate-based positive electrode material is improved, the compression modulus of the positive electrode material is improved, and meanwhile, the chemical components and the electronic structure of the surface of the positive electrode material can be changed; therefore, the doped phosphate positive electrode material has the characteristics of relatively high ionic conductivity, electron conductivity, gram volume, cycling stability and the like.

The invention discloses a preparation method of a self-supporting three-dimensional electrocatalyst with an adjustable pore structure and ordered metal distribution. The method is divided into the following two methods according to different adding steps of metal nanoparticles or metal precursors: the method I comprises the following steps: 1) preparing a porous organic polymer by adopting an ice template method; 2) dissolving a metal precursor in an ethanol solution at room temperature, mixing with the porous organic polymer carrier, and standing until ethanol is completely volatilized to obtain a porous organic polymer with orderly distributed metals; and 3) performing high-temperature carbonization on the porous organic polymer with orderly distributed metals to obtain the porous organic polymer. The method II comprises the following steps: a) preparing a porous organic polymer with orderly distributed metals by adopting an ice template method; and b) carrying out high-temperature carbonization on the porous organic polymer with orderly distributed metals. The application of the porous organic polymer material in the fields of catalysis, composite material modification, supercapacitors and the like in other fields can be expanded through copolymerization or addition of functional fillers (such as magnetic particles, conductive fillers and the like).

The invention provides a method for preparing a high-efficiency copper indium gallium sulfur selenium solar cell based on antimony doping by a solution method. The method comprises the following steps: preparing precursor solutions with different antimony doping concentrations; performing spin-coating annealing on the precursor solution for multiple times to obtain a precursor film; through selenylation, a micron-sized CIGS absorption layer penetrating through crystal grains up and down is obtained; and depositing a buffer layer, a window layer and a top electrode to prepare the antimony-doped CIGS thin film solar cell. According to the method for preparing the efficient copper-indium-gallium-sulfur-selenium solar cell by doping antimony based on the solution method, the metal antimony salts with different concentrations are added into the precursor solution, so that the micron-sized penetrating high-quality absorption layer is prepared, and the corresponding cell performance of the solar cell prepared based on the method is obviously improved.

The invention relates to the field of optical thin films, and particularly discloses a preparation method of an ultra-wide-angle low-reflection composite nanostructure optical thin film, which comprises the following steps: S1, cleaning the surface of a glass substrate, and then carrying out laser etching treatment to obtain etched glass; s2, putting the etched glass into a melamine solution, heating to 780-800 DEG C, treating for 30-40 minutes, and cooling to obtain nitrogen-doped glass; treating the surface with boric acid and ammonia gas to obtain a semi-finished product; s3, coating the surface of the semi-finished product with a rare earth terbium modified silicon dioxide layer to obtain a finished product; the optical thin film has the advantages of ultra-wide angle, low reflectivity and high transmissivity.

The present invention relates to the field of biomedicine technology, and in particular to a preparation method and application of an injectable hydrogel for the treatment of colon cancer, comprising firstly loading a TPT package into ZIF-8 to keep the lactone ring stable to exert toxicity, and then co-loading the ZIF-8 loaded with the chemotherapy drug TPT and the sonosensitizer riboflavin sodium phosphate VB2 into the injectable ALG hydrogel, utilizing Ca in the tumor microenvironment to 2+ It forms an injectable hydrogel locally in situ; the specific steps are as follows: step 1, preparation of TPT / ZIF‑8; step 2, preparation of GRTZ. The present invention simply dopes two functional materials by using a carrier. First, TPT is encapsulated in the zeolite imidazole framework TPT / ZIF‑8, and then TPT / ZIF‑8 and riboflavin sodium phosphate (VB2) are blended in a sodium alginate solution to form an injectable gel TPT / ZIF‑8@GR (abbreviated as GRTZ). The accumulation and long-term release of drugs at the tumor site are finally achieved; and GRTZ can produce enhanced ROS under ultrasound, realizing chemotherapy-sound dynamic synergistic treatment of tumors.

The invention belongs to the technical field of semiconductor materials, and particularly relates to a low-dielectric silicon nitride film and a preparation method and application thereof. The preparation method of the low-dielectric silicon nitride film comprises the following steps: S1, introducing an organic amino silane precursor into a reaction chamber, and performing atomic layer deposition on the surface of a substrate to obtain a first reactant; s2, an auxiliary agent is introduced into the reaction chamber to be subjected to a contact reaction with the first reactant, and a second reaction product is obtained; and S3, introducing a plasma source-containing gas into the reaction chamber, and carrying out contact reaction on the plasma source-containing gas and the second reaction product to obtain the low-dielectric silicon nitride film, wherein the auxiliary agent is a nitrogen-containing MOF material. The preparation method is characterized in that a nitrogen-containing MOF material is introduced as a sacrificial template assistant to react with an organic amino silane precursor, so that metal and carbon can be uniformly doped into the silicon nitride film, and the prepared silicon nitride film has the properties of low dielectric constant, low density and reduction of wet etching rate.

The application provides a sodium ion battery negative electrode material and a preparation method thereof. The preparation method of the sodium ion battery negative electrode material comprises the following steps: obtaining a coal-based raw material; performing a defect operation on the coal-based raw material, so that the coal-based raw material is oxidized and crosslinked to obtain a pre-oxidized coal-based negative electrode material; performing a hot extraction treatment on the pre-oxidized coal-based negative electrode material to remove organic impurities in the pre-oxidized coal-based negative electrode material; and performing a high-temperature doping operation on the pre-oxidized coal-based negative electrode material after the hot extraction treatment to obtain the sodium ion battery negative electrode material. The preparation method of the sodium ion battery negative electrode material can effectively change the disorder degree of the microstructure, increase the interlayer spacing of the coal-based raw material, and further effectively improve the reversible specific capacity and the cycle performance.

The invention discloses a near-infrared scintillation crystal and a preparation method thereof. The chemical formula of the scintillation crystal is Cs3Ce1-yX6: ySb, wherein X is selected from at least one of Cl and Br; the value range of y is more than or equal to 0.001 and less than or equal to 0.06. The scintillation crystal is prepared by adopting a Bridgman-Stockbarger method, can emit broadband near-infrared light with the wavelength of 800-1000nm under the excitation of high-energy rays or high-energy particles, and is matched with the detection wavelength of an APD (Avalanche Photo Diode) and an SiPM (Silicon Particulate Matrix) detector with high quantum efficiency.

The invention discloses a method for preparing a Na2FePO4F / C material by using iron phosphate waste residue, which comprises the following steps: (1) carrying out oxidizing roasting pretreatment on the iron phosphate waste residue to obtain a roasted product; (2) mixing and reacting the roasted product with an acidic reducing agent to obtain a reaction product; (3) mixing and reacting the reaction product, a sodium source, a fluorine source, a carbon source, an iron source, a phosphorus source and an aluminum source, and drying the reaction product to obtain an intermediate product; and (4) carrying out reduction roasting on the intermediate product to obtain the Na2FePO4F / C. According to the invention, the doping modification effect of the aluminum impurities in the raw materials in the Na2FePO4F / C material is fully utilized, so that the cycle performance of the Na2FePO4F / C at high rate is effectively improved.

This invention provides a perovskite solar cell and its fabrication method. The fabrication method of the perovskite solar cell includes the following steps: forming a first electrode layer on one side surface of a substrate; and forming NiO on one side surface of the first electrode layer using a magnetron sputtering process. x The layer uses a nickel oxide target. During magnetron sputtering, oxygen is introduced into the magnetron sputtering chamber at a flow rate of 4.5 sccm to 15 sccm and a temperature of 100°C to 140°C. The aforementioned NiO... x The layer preparation method facilitates the doping of oxygen molecules into the nickel oxide film, thus achieving the desired oxygen doping level without the need for excessive oxygen introduction, and enabling precise control of NiO. x The oxygen content of the layer; the low oxygen content in the magnetron sputtering chamber can prevent NiO. x Excessive oxygen doping in the NiO layer ensures the photoelectric conversion efficiency of the perovskite solar cell; the aforementioned NiO x The layer preparation method also improves the uniformity of oxygen distribution within the magnetron sputtering chamber, thereby enhancing the NiO content. x The uniformity of oxygen doping in the layer improves the performance uniformity of perovskite solar cells.

The invention discloses a solid electrolyte coated lithium-doped graphite composite material as well as a preparation method and application thereof. The solid electrolyte coated lithium-doped graphite composite material comprises an inner core and a shell coated outside the inner core, the inner core is made of lithium, a first conductive agent and graphite, the lithium and the first conductive agent jointly coat the surface of the graphite, and the shell is made of a solid electrolyte, a second conductive agent and amorphous carbon. The solid electrolyte and the second conductive agent are co-doped in the amorphous carbon. The existence of amorphous carbon in the shell of the solid electrolyte-coated lithium-doped graphite composite material improves the coating effect and strength, and by means of the characteristics of high ionic conductivity of the solid electrolyte and electronic conductivity of the second conductive agent in the shell and exerting the synergistic effect between the solid electrolyte and the second conductive agent, the lithium-doped graphite composite material can be coated with the lithium-doped graphite. The electronic and ionic conductivity of the graphite composite material in the charging and discharging process is improved, and the fast charging and low-temperature performance of the solid electrolyte coated lithium-doped graphite composite material are improved.

The invention discloses a nanoscale positive electrode material precursor as well as a preparation method and application thereof. A spray pyrolysis device is adopted for preparing the nanoscale all-solid-state battery positive electrode material, the spray pyrolysis device comprises a pyrolysis furnace, a spray head is arranged at the top of a hearth of the pyrolysis furnace, and a product outlet is formed in the bottom of the pyrolysis furnace; the pyrolyzing furnace is divided into an upper temperature area, a middle temperature area and a lower temperature area which are independently controlled in temperature from top to bottom; the preparation method comprises the following steps that a mixed metal salt solution is sprayed through a spray head, atomized liquid drops enter a pyrolyzing furnace to be subjected to spray pyrolysis, and the temperature of an upper temperature area is controlled to be t1lt; the temperature of the medium-temperature area is t2lt; the temperature of the lower temperature zone is t3, and obtaining the nanoscale positive electrode material precursor after spray pyrolysis. When the positive electrode material prepared from the nanoscale positive electrode material precursor is applied to a solid-state battery, the contact property of a positive electrode and a solid-state electrolyte can be improved, the conductivity and the lithium ion transmission rate are greatly improved, and the performance of the solid-state battery is improved.

The invention belongs to the field of polymer electrolyte membranes, and particularly relates to a guanidine salt / imidazole derivative-based composite proton exchange membrane for a high-temperature fuel cell and a preparation method. The preparation method comprises the following steps: firstly synthesizing fluorine-containing polybenzimidazole (6FPBI), then synthesizing a guanidine salt derivative (GBIM) containing imidazole and guanidyl, and finally preparing the guanidine salt / imidazole derivative filler polybenzimidazole composite proton exchange membrane. GBIM is a guanidyl imidazole derivative and has a stronger resonance effect, namely higher stability, and guanidyl and imidazole both have strong alkali properties, so that doping of phosphoric acid is facilitated; the composite membrane is prepared by adding the composite membrane as a filler into a polymer matrix, so that the phosphoric acid retention rate, the chemical stability, the proton conductivity and the high-temperature fuel cell performance are improved.

A dual-layer optical encryption fluorescent polymer waveguide chip based on optical pulse code modulation technology belongs to the field of functional photonic chip technology. It consists of a substrate layer, a buffer layer, a cladding layer, a bottom waveguide layer, and a top waveguide layer. The cladding layer is divided into three parts: a lower cladding layer, a middle cladding layer, and an upper cladding layer. The bottom waveguide is located within the middle cladding layer, and the top waveguide is located within the upper cladding layer. The bottom and top waveguides do not overlap in the chip's top-view plane. The waveguide layer material is obtained by doping fluorescent small-molecule oligomer chromophores into a polymer material. This invention achieves signal optical pulse coding by modulating the pump light power intensity. By detecting changes in optical transmission loss in the fiber optic system, it determines whether eavesdropping has occurred. Eavesdropping is indicated by optical transmission loss exceeding a threshold. False information is displayed in the bottom waveguide for disguise, while the modulated information is transmitted encrypted through the top waveguide, thus solving the problems of limited controllability and insufficient security in traditional encryption technologies.

The invention discloses a preparation method and application of a conformal perovskite film, and belongs to the technical field of perovskite photoelectric materials.According to the method, a solution method is used for film formation in the whole technological process, an anti-solvent is gradually volatilized in a gas phase form to enter a precursor solution to promote film crystallization and deposition, and the film is formed. According to the method, perovskite thin films can be grown on various substrates including textured silicon, an ABX3 perovskite material can be directly deposited on the substrate to form a film, and (Ai) mBnXm + 2n can be firstly deposited on the substrate and then a solution with the solute being AjX is spin-coated to form the film. The preparation method provided by the invention has the advantages of mild conditions, no need of high-temperature, vacuum and other environments, simple preparation process, low cost and easiness in large-scale production, and can be used for depositing a high-quality conformal perovskite thin film on a substrate with relatively large surface fluctuation, such as textured silicon, so that the whole textured structure is completely covered, and carrier transmission is facilitated.

The present application relates to the field of optical films, and specifically discloses a method for preparing an ultra-wide-angle low-reflection composite nanostructure optical film, comprising the following steps: S1, cleaning the surface of a glass substrate, and then performing laser etching to obtain an etched glass; S2, placing the etched glass in a melamine solution, heating it to 780-800°C for treatment for 30-40 minutes, and obtaining nitrogen-doped glass after cooling; then treating the surface with boric acid and ammonia to obtain a semi-finished product; S3, coating a rare earth terbium-modified silica layer on the surface of the semi-finished product to obtain a finished product; the optical film has the advantages of ultra-wide angle, low reflectivity, and high transmittance.

The present disclosure provides a method for preparing a GaN-based light-emitting diode epitaxial wafer and an epitaxial wafer, belonging to the field of optoelectronic manufacturing technology. The method for preparing the GaN-based light-emitting diode epitaxial wafer includes: providing a substrate; epitaxially growing an n-type GaN layer on the substrate; epitaxially growing a multi-quantum well layer on the n-type GaN layer; intermittently introducing a Mg source into the reaction chamber in a pulsed manner to form a pretreatment layer on the multi-quantum well layer, wherein the pretreatment layer is a Mg metal layer; and epitaxially growing a p-type GaN layer on the pretreatment layer. The embodiments of the present disclosure can improve the problem of low doping concentration due to the memory effect of Mg when doping Mg in the p-type GaN layer, thereby improving the luminous efficiency of the light-emitting diode chip.

The present invention provides a solid electrolyte lithium titanium aluminum phosphate precursor and a preparation method and application thereof, wherein the solid electrolyte lithium titanium aluminum phosphate precursor comprises lithium, aluminum, titanium, oxygen, hydrogen and phosphorus; in the XRD spectrum of the solid electrolyte lithium titanium aluminum phosphate precursor, the peak intensity ratio of the first strong diffraction peak and the second strong diffraction peak is 0.5-2.0, and the half-height width range of the first strong diffraction peak and the second strong diffraction peak is independently 0.3-0.8°; the peak position of the first strong diffraction peak is within the range of 26.5-27.5°, and the peak position of the second strong diffraction peak is within the range of 27.5-28.5°. The present invention can obtain lithium titanium aluminum phosphate precursor particles with a primary particle size of 5-30nm, and the precursor can be directly used for surface coating of positive electrode materials, and the precursor particles only need simple calcination to be converted into nano lithium titanium aluminum phosphate.

The application discloses a ferrous sulfide composite catalyst and a preparation method thereof. The ferrous sulfide composite catalyst comprises a nitrogen-doped carbon layer, and ferrous sulfide nanoparticles are loaded on the nitrogen-doped carbon layer. The preparation method comprises the following steps: mixing iron chloride and ethanol, adding thiourea and o-phenanthroline, stirring, obtaining a precursor dispersion, mixing with melamine, stirring, drying, and obtaining a precursor powder; and calcining the precursor powder, acid washing, and obtaining the ferrous sulfide composite catalyst. The ferrous sulfide composite catalyst has the advantages of excellent catalytic activity, strong stability and the like, can effectively activate an oxidant, a system constructed by the ferrous sulfide composite catalyst can quickly generate a large amount of active species, is favorable for quickly and completely degrading refractory organic pollutants in wastewater, and has high use value and good application prospect. The preparation method also has the advantages of simple process, convenient operation, low cost and the like, and can realize large-scale production and be favorable for industrial application.

The invention belongs to the field of photoelectric detectors, and particularly relates to a thin film for improving response wave band and sensitivity of a silicon detector and a preparation method thereof. The material comprises TiO2 nano-particles, MgF2 nano-particles and Tb < 3 + > ions, the size of the TiO2 nano-particles is 10-20 nm, the MgF2 nano-particles are of a hollow structure, the size of the MgF2 nano-particles is about 10-30 nm, the Tb < 3 + > ions are doped into crystal lattices of MgF2, the thickness of the film is 70-110 nm, and the film can reduce reflected light on the silicon surface and can convert ultraviolet light into visible light at the same time. The responsivity of the detector can be improved by reducing reflected light, and the response wave band of the silicon detector can be widened by converting ultraviolet light into visible light.

The application discloses a kind of preparation device of biomass-based hard carbon negative material, comprising: surface distortion system, high-energy surface modification system and high-temperature carbonization system.The application also provides a kind of preparation device of biomass-based hard carbon negative material for preparing biomass-based hard carbon negative material using the above preparation method and the application of biomass-based hard carbon negative material prepared by the above preparation method.The preparation device and preparation method of biomass-based hard carbon negative material of the application are based on the principle of biomass heteroatomic doping modification-high temperature pyrolysis carbonization, based on the crystal structure characteristics of hard carbon material, combined with material surface distortion-high-energy surface modification-high-temperature carbonization, which can improve production efficiency and reduce production cost while realizing the efficient preparation of biomass-based amorphous hard carbon negative material.

The invention discloses an iron-based nano-clay material with a functional element sequence and a preparation method and application thereof. The preparation method comprises the following steps: acidizing nano-clay, mixing the acidized nano-clay with ferrocene and an organic solvent to prepare a precursor, and pyrolyzing the precursor to obtain the iron-based nano-clay material with the functional element sequence. According to the preparation method disclosed by the invention, the nano-clay is acidified, ferrocene is taken as a doped iron source, and the iron-based nano-clay material which is large in specific surface area, large in number of active sites, excellent in catalytic performance and good in structural stability and is constructed by functional elements can be prepared through pyrolysis; when the persulfate catalyst is used for treating emerging pollutant wastewater, emerging pollutants can be effectively degraded, pH interference is small, catalytic efficiency can be achieved under the very wide pH condition, and the persulfate catalyst has the advantages of being simple in process, convenient to operate, low in cost, high in treatment efficiency, good in degradation effect and the like, and has wide application prospects. The method has important significance for effectively removing emerging pollutants in the environment.

The utility model discloses water cutting equipment with a recycling mechanism, which comprises a fixing frame, a working frame and a portal frame, the working frame is fixedly mounted on the top surface of the fixing frame in a penetrating manner, and the portal frame is fixedly mounted on the top surface of the fixing frame; the electric sliding block is connected to the top surface of the portal frame in a sliding manner; the water cutting spray head is mounted on the front side surface of the electric sliding block; the water tank is fixedly mounted on the inner bottom surface of the fixing frame; the water supply mechanism is arranged on the inner bottom face of the fixing frame. According to the water cutting equipment with the recycling mechanism, water after water cutting can be conveniently recycled, water resource waste is avoided, the use cost is reduced, economical efficiency is improved, meanwhile, filtering treatment is conducted while water is recycled, impurities are prevented from being doped in the recycled water, the water quality is guaranteed, follow-up use is facilitated, a filter screen is conveniently cleaned, the filtering effect is guaranteed, and the water cutting equipment is suitable for popularization and application. Operation is simple and flexible, and practicability is high.

The invention relates to an S-doped g-C3N4 / Bi2MoO6Z type heterojunction photocatalyst as well as a preparation method and application thereof, and belongs to the technical field of photocatalysis. The preparation method of the catalyst comprises the following steps: mixing and grinding melamine, ammonium bromide and thioacetamide, and then carrying out a thermal polycondensation reaction to synthesize S-doped g-C3N4; mixing the S-doped g-C3N4 with a molybdenum source and bismuth source solution to form a turbid liquid; and finally, carrying out solvothermal reaction on the turbid liquid to obtain the S-doped g-C3N4 / Bi2MoO6 photocatalyst. The preparation process is simple, the cost is low, the operation repeatability is high, and the prepared catalyst has a homogeneous structure and excellent visible light photocatalytic activity, can effectively degrade organic pollutants, and has a wide application prospect, especially in the fields of energy and environmental governance.

The invention discloses an organic nanowire for an electronic nose for pneumoconiosis detection and a detection method thereof, and the detection method comprises the following steps: representing the organic nanowire by SEM and XRD to judge whether the morphological characteristics of the organic nanowire are qualified, applying a load to an organic nanowire sample, and calculating the hardness value of the organic nanowire according to the load, preparing an indirectly-heated gas-sensitive element from the organic nanowires to test the sensitive characteristics of the indirectly-heated gas-sensitive element to different gases, and judging whether the gas-sensitive property and the mechanical property are qualified or not according to the hardness value and the sensitive characteristics; the diameter of the nanowire is smaller, the surface area is larger, the oxygen adsorption amount is increased, so that the gas-sensitive performance is improved, precious metal doping plays a good catalytic role, the activation energy of chemical adsorption of detected gas can be effectively reduced, the sensitivity of gas detection is improved, and the application prospect is wide. The detection method provided by the invention can realize accurate, effective and low-cost detection of the mechanical properties and gas-sensitive properties of the nanowire product, and ensures the quality of the nanowire for the electronic nose.

The invention relates to anti-counterfeiting ink as well as a preparation method and application thereof. The anti-counterfeiting ink comprises polymer chiral mesoporous microspheres, a fluorescent dye and a polymer solution, the polymer chiral mesoporous microsphere has a photonic forbidden band; the central wavelength of the photonic forbidden band is recorded as x nm, the width of the photonic forbidden band is recorded as y nm, the emission wavelength of the fluorescent dye is recorded as z nm, and | x-z | is smaller than or equal to 0.5 y. The anti-counterfeiting ink provided by the invention has the advantages of convenience in processing and writing and multi-mode anti-counterfeiting and encryption functions of circularly polarized light and multi-mode excitation, can meet the application requirements in the fields of anti-counterfeiting, information encryption and the like, and improves the information security.