69 results about "Afterglow" patented technology

The present invention relates to the technical field of solar-powered seawater desalination. Specifically disclosed are an all-day solar-powered seawater desalination device and method. In the present invention, by means of a prepared composite hydrogel evaporator, water in seawater can be evaporated into water vapor and the water vapor undergoes condensation to become freshwater. By combining solar energy and a long-afterglow noctilucent device, evaporation occurs in the daytime by means of the composite hydrogel evaporator under solar irradiation, and the evaporation process continues at night by means of light energy released by a long-afterglow noctilucent device, so that seawater can be efficiently evaporated both in the daytime and at night, thus achieving continuous seawater desalination. The present invention can realize continuous and efficient evaporation of seawater all day, thereby improving the freshwater yield, achieves efficient utilization of energy by means of dual energy excitation, and uses a low energy consumption and environmentally friendly method to solve the problem of shortage of freshwater resources.

The invention discloses an early warning method and system for intelligently detecting fire scene waste heat reburning based on AR glasses, and relates to the technical field of fire safety intelligent monitoring. The early warning method comprises the following steps: scanning a conical area in front of a visual field in real time based on AR glasses, capturing temperature matrix data and collecting environmental parameter data, and identifying afterheat hot spots in the visual field and associated article types based on a YOLOv8s model; based on edge AI comprehensive temperature matrix data and environmental parameter data, risk indexes of residual heat hot spots are calculated in real time and visualized into low, medium and high risks; locking and analyzing the temperature change of the medium-high risk article, dynamically correcting the safety coefficient in combination with an article material database, and visualizing the detailed information, the real-time temperature and the risk index of the article; and spraying and cooling the high-risk target based on the guidance of AR glasses, and judging whether the risk is relieved or not according to the temperature attenuation rate and the risk index. By implementing the technical scheme provided by the invention, the fire scene afterheat after-combustion hidden danger can be quickly, comprehensively and intuitively detected.

The application discloses a passive dual-mode tactile sensor and a preparation method thereof, and belongs to the technical field of optical sensing and flexible tactile sensing. The sensor comprises a flexible support substrate, an elastic composite film containing long-afterglow light-emitting particles, micro-nano optical fibers embedded or attached to the surface of the elastic composite film, a flexible packaging layer, and an optical signal detection unit. When an external target approaches, the target surface reflects the scattered light, changes the output light intensity of the micro-nano optical fiber, and realizes non-contact sensing. When the external target contacts or presses, the composite film produces stress-induced luminescence enhancement and interface coupling change under the action of stress, and realizes contact force tactile sensing. The preparation method comprises light-emitting composite layer forming, micro-nano optical fiber taper preparation, interface coupling integration and packaging curing. The application has the advantages of no need for continuous light supply, compact structure, anti-electromagnetic interference, easy flexible integration, and suitability for human-computer interaction application.

Miniature lighting device characterized in that it consists of one or more elements made entirely or partially of phosphorescent material, wherein these elements absorb energy during exposure to natural or artificial light and release it again in the dark in the form of visible afterglow.

The present invention provides: a scintillator which is reduced in the intensity of the afterglow, while having increased luminous intensity; and a charged particle radiation apparatus. A scintillator according to the present invention is characterized in that: a base material, a buffer layer, a light emitting part and a first conductive layer are sequentially stacked in this order; the light emitting part contains one or more elements that are selected from the group consisting of Ga, Zn, In, Al, Cd, Mg, Ca and Sr; and a second conductive layer is provided between the base material and the light emitting part.

The invention relates to a method for plasma-assisted sintering of calcium stannate short-wave infrared long afterglow powder, the chemical composition of the long afterglow powder is Ca2SnO4: xEr < 3 + > / Pr < 3 + > / Nd < 3 + >, and x is more than or equal to 0.1 and less than or equal to 1; the long afterglow powder takes calcium stannate as a matrix and is formed by doping and sintering rare earth capable of emitting red light. The sintering adopts a stir-frying plasma assisted low-temperature sintering method, compounds containing an erbium element, a praseodymium element and a neodymium element are doped, namely erbium trioxide, praseodymium trioxide and neodymium oxide, and H3BO3 is added as a fluxing agent to prepare a sample. The method is low in energy consumption, and the yield of the calcium stannate fluorescent powder is effectively improved; according to the invention, short-wave infrared long-afterglow luminescence of doped ions is realized, and the emission wavelength is adjustable from 800nm to 1600nm.

The application relates to long-afterglow light-emitting concrete and a preparation method thereof, and belongs to the technical field of building engineering materials. The long-afterglow light-emitting concrete is prepared from the following components: cementitious material 420-485 parts by weight, water reducing agent 8-10 parts by weight, long-afterglow light-emitting material 5-10 parts by weight, admixture 5-7.5 parts by weight, and water 50-80 parts by weight. The long-afterglow light-emitting material is combined with high-performance concrete, the light penetration and excellent light-emitting performance of the long-afterglow light-emitting material are utilized, and high-performance long-afterglow light-emitting concrete with high strength and long afterglow time is obtained, which can be used in the fields of emergency passage indication, weak light illumination, building decoration and art crafts.

The present invention discloses a method for preparing a photothermal energy storage super-hydrophobic all-weather anti-icing coating, comprising: step 1, preparing long-afterglow nanoparticles, step 2, in-situ modifying a double-shell microcapsule phase change material with the long-afterglow nanoparticles, step 3, performing low-surface-energy modification treatment on the composite particles, and step 4, preparing a photothermal energy storage super-hydrophobic anti-icing coating; the anti-icing coating prepared by the present invention delays freezing by means of a super-hydrophobic surface formed by super-hydrophobic micro-nanostructured particles; photothermal materials are used to efficiently convert solar energy into thermal energy, thereby achieving instant anti-icing and storing the remaining heat in the phase change material; long-afterglow materials are used to store sunlight for nighttime photothermal conversion, and combined with the stored heat released by the phase change material, long-lasting nighttime anti-icing and de-icing are achieved; the present invention achieves effective all-weather anti-icing through a multi-level anti-icing mechanism, thereby solving the problem of poor all-weather anti-icing / de-icing effects of existing coatings under low-temperature and high-humidity conditions, and has important application prospects in anti-icing fields such as power transmission lines and aircraft wings.

The invention provides a reflective and noctilucent integrated composite PVC (polyvinyl chloride) material and a preparation method thereof. The composite PVC material is composed of a PVC base material layer and a composite functional layer, the preparation raw materials of the PVC base material layer comprise the following components in parts by weight: 80-120 parts of polyvinyl chloride resin, 40-60 parts of a plasticizer and 2-10 parts of a stabilizer; the composite functional layer is prepared from the following components in parts by weight: 20-40 parts of composite reflective powder, 10-30 parts of long afterglow noctilucent powder, 2-10 parts of a dispersing agent, 40-60 parts of polyvinyl chloride resin, 20-40 parts of a plasticizer and 15-35 parts of a solvent. The prepared composite PVC material has high visible light reflectivity, is good in light reflection effectiveness, high in ageing resistance and weather resistance and long in afterglow time, is high in light energy storage capacity and high in continuous luminous efficiency at night, and can further enhance the reliability and safety of the material in practical application.

The invention belongs to the technical field of luminescent materials, and particularly relates to a white long-afterglow luminescent material as well as a preparation method and application thereof. The molecular formula of the white long-afterglow luminescent material is NaSr2GaGe5O14: Pr < 3 + >, Pr < 3 + > is an activator, and NaSr2GaGe5O14 is a matrix. The luminescent material provided by the invention has more advantages in the aspect of chemical stability, is not easily influenced by environmental factors such as water, oxygen and the like to cause reduction of luminescent property, and can be used under wider environmental conditions. In addition, the fluorescent powder also has the advantages of good white light-emitting characteristic, excellent long afterglow performance, high light-emitting stability, strong spectrum adjustability and the like.

The invention discloses a biomass-based multi-light-source excited X-ray response type long-afterglow phosphorescent material as well as a preparation method and application thereof, and belongs to the technical field of functional materials. According to the invention, a novel long-afterglow luminescent material is synthesized by using natural ellagic acid, boric acid, urea and the like as raw materials by using a microwave-assisted strategy. The long-afterglow luminescent material disclosed by the invention shows excellent multi-mode excitation responsiveness, can generate long-afterglow luminescence through irradiation of ultraviolet rays, natural sunlight and X rays, can emit afterglow as long as several hours under the ultraviolet rays and the sunlight, and can still generate luminescence under the irradiation of the X rays under the detection limit as low as 192.2 mu Gy s <-1 >; the method has the potential of anti-counterfeiting and X-ray imaging application.

The present invention provides a red afterglow carbon dot material, a preparation method thereof and an application. The preparation method comprises the following steps: dissolving an organic dye and a nitrogen source in deionized water for hydrothermal reaction; cooling the solution after the hydrothermal reaction to room temperature, centrifuging, collecting the supernatant to obtain a seed solution; dissolving the seed solution in deionized water, then adding a nitrogen source and a silicon source, heating by oil bath until dry, naturally cooling to room temperature, and grinding to obtain the red afterglow carbon dot material, which can be used for afterglow lighting or afterglow display. The preparation method of the present invention is simple, and the prepared afterglow carbon dot luminescent material has a long emission wavelength, the emission range is red light, the photoluminescence quantum yield is close to 100%, the lifetime is up to more than 334 ms, and it has good stability.

The invention relates to the technical field of landscape building materials, in particular to a landscape concrete building block with energy storage and light emitting functions, which comprises a base structure layer and a light emitting functional layer, the light emitting functional layer is a surface layer with the thickness of 3-5mm and contains a pretreated long-afterglow light emitting material; the base layer and the light-emitting functional layer are formed in a layered pouring composite mode. The long-afterglow luminescent material is aluminate fluorescent powder of which the surface is subjected to organic-inorganic hybrid coating treatment, and the coating treatment of the long-afterglow luminescent material comprises the following steps: forming a nano SiO inorganic coating layer on the surface of the luminescent powder by adopting a sol-gel method, and the thickness of the coating layer is 10-20nm; the preparation method comprises the following steps: carrying out organic modification on nano SiO coated luminescent powder by adopting a silane coupling agent to form an organic-inorganic hybrid coating layer; the landscape building material provided by the invention has the energy storage and light emitting capabilities and does not need electricity, and the problems that a traditional landscape product is poor in visibility at night, the cost of installing lighting facilities is high, and an existing light emitting material is insufficient in durability are solved.

The invention provides an organic long-afterglow material capable of stably emitting light in a severe environment and a preparation method of the organic long-afterglow material, and belongs to the field of organic long-afterglow materials. The preparation method of the organic long-afterglow material comprises the following steps: fully dissolving a tetraphenyl ethylene derivative and polyarylene ether nitrile in an organic solvent, casting on a horizontal glass plate to naturally cast into a film, heating to remove the solvent to obtain a doped film, and irradiating the doped film under an ultraviolet lamp to generate a light cyclization reaction to obtain the organic long-afterglow material. The phosphorescence service life of the doped film is further prolonged, and the organic long-afterglow material capable of stably emitting light in a severe environment is obtained. The organic long afterglow material prepared by the invention has excellent heat resistance, aging resistance and acid and alkali resistance, and can be suitable for severe environments. Meanwhile, the organic long-afterglow material promotes a light cyclization reaction through ultraviolet radiation, so that the photochromism of the material can be realized, the phosphorescence service life is prolonged, longer afterglow is realized, and the organic long-afterglow material has a very good application prospect in the fields of ink-free printing, anti-counterfeiting watermarking, information encryption and the like.

According to the light-emitting building coating and the preparation method thereof, a sol electrophoretic deposition method is adopted for preparing a long-afterglow material, and the obtained light-emitting coating has long afterglow time and high afterglow brightness mainly by improving an electrolyte system in the electrophoretic deposition process and assisting in hydrothermal purification of the performance of the long-afterglow material; the synthesis method is simple in process, good in purification effect and suitable for the fields of roads, walls, lighting buildings, anti-counterfeiting marks and the like.

The present invention relates to the technical field of long afterglow phosphors, and specifically to a Ce 3+ -activated blue long afterglow material and a preparation method thereof. The chemical composition formula of the material is: Rb 3w Gd (1‑y‑x) Sc y Si2O7:Ce x , where 0.95 ≤ w ≤ 0.98, 0.005 ≤ x ≤ 0.05, and 0.001 ≤ y ≤ 0.002. The material prepared by the present invention can exhibit a photochromic effect of changing from white to cyan-gray after absorbing ultraviolet light; after turning off the light source, the material emits blue long afterglow, and the afterglow decay time can reach 30 h; when the afterglow disappears, after being excited again by 980 nm near-infrared light, regenerative up-conversion long afterglow luminescence can be achieved, and the afterglow decay time is about 4 h. The material of the present invention is expected to realize multifunctional applications such as information storage, fluorescence anti-counterfeiting, and bio-optical imaging.

The invention discloses an afterglow scintillator material for X-ray delayed imaging, which is prepared by a high-temperature solid phase method: NaCa3Y1-x (PO4) 3F: xTb < 3 +, 0lt; x is less than or equal to 9%. The afterglow scintillator material can realize high-resolution X-ray afterglow imaging and stable low-dose detection limit, and can perform flat-plate-free X-ray imaging on an electronic object.

The invention belongs to the technical field of marine fishery equipment and fishery engineering, and discloses a liftable wave-avoiding artificial fish collecting device and a self-luminous fish luring method of the liftable wave-avoiding artificial fish collecting device. The upper self-luminous bionic lotus leaf can actively sink to the preset safe water depth from the surface layer when wind waves are enhanced, and the stable wave avoiding state is kept when needed; a strong stormy wave acting area on the surface layer is effectively avoided, and the environment adaptability and survival ability under the complex sea condition are remarkably improved; the self-luminous bionic lotus leaf is prepared from an organic long-afterglow luminescent material, after being excited by natural light or artificial light, the self-luminous bionic lotus leaf can continuously emit blue light, blue-green light or green light signals under the condition of no external power supply, and continuous trapping of phototactic fishes is achieved at night or in a weak light environment; a complex power supply system and a watertight electrical structure are omitted, and the use convenience and reliability under the condition of long-term layout on the sea are remarkably improved.

The present application relates to the field of plant functional materials, and specifically provides a kind of plant night long-lasting luminescent nanohydrogel composite material and preparation method.The composite material is first coated by phosphate on SrAl2O4:Eu 2+ ,Dy 3+ Long afterglow powder;Second, polyurea nanonet reinforced gelatin-glycerol-borax ultrathin hydrogel carrier is prepared;Finally, the coated powder is uniformly dispersed in hydrogel to form a composite functional material.The present application realizes the uniform diffusion and long-term fixation of long afterglow powder in plant body, and after short excitation by natural light or indoor light, the plant can emit light stably for 2-4h at night, the light intensity retention rate is more than 80% for 15 consecutive days, and has no adverse effect on normal growth of plant, the fluctuation of key physiological indicators such as chlorophyll is less than 5%, which breaks through the bottleneck of short light-emitting time, poor uniformity and high plant toxicity of traditional technology.

The present invention discloses a light storage lighting device based on a combination of long afterglow materials and solar panels, which includes a collection module, a light storage cavity module, a circuit module, a focusing module, and a light storage cavity cover. Among them, the surface of the optical element group of the collection module that participates in light reflection is attached with a highly reflective film, the inner wall of the light storage cavity cylinder is pasted with a highly reflective film, the long afterglow material is coated on the highly reflective film, and only the highly reflective film is pasted on the bottom surface of the light storage cavity cylinder. In the light collection stage of the device of the present invention, the collection module is docked with the light storage cavity module, and external light is introduced by the collection module, and the light energy is stored with the help of the long afterglow material and the solar panel; in the storage stage, the light storage cavity module is docked with the light storage cavity cover to reduce the overflow of internal light energy; in the lighting stage, the light storage cavity module is docked with the focusing module, so that the diode is located at the focal point of the convex lens, and the diode light and the continuously highly intense afterglow light of the re-excited long afterglow material are focused through the optical element group, so that the device emits parallel light with a relatively strong light intensity and can be used for lighting.

The invention belongs to the technical field of luminescent materials, and discloses a preparation method of a carbon dot-based panchromatic afterglow material capable of being excited by sunlight. The preparation method comprises the following steps: (1) dispersing rhodamine B and ammonium halide in a solvent, carrying out solvothermal reaction at 140-240 DEG C for 6-10 hours, and then naturally cooling to room temperature to obtain a carbon dot solution; and (2) dispersing the carbon dot solution obtained in the step (1) and boric acid in water, heating at 140-240 DEG C for 3-10 hours, naturally cooling to room temperature, and grinding the obtained solid to obtain the carbon dot-based afterglow material. According to the invention, low-cost rhodamine B is used as a raw material, halogen elements are doped, the carbon dots are synthesized by a solvothermal method, the energy level and electronic structure of the carbon dots are changed, transition of triplet state restriction becomes possible, and after the prepared carbon dots are compounded with boric acid, a solid afterglow material is prepared, so that the afterglow material has a good application prospect. Moreover, the afterglow of the afterglow material is thermally activated delayed fluorescence, shows blue, green, yellow and red full-color afterglow, and can be excited by sunlight, so that the preparation and application cost of the afterglow material is greatly reduced.

The application discloses a multi-waveband light-emitting perovskite afterglow material and a preparation method thereof. The material is a matrix material, and an expression formula is ABa-xBaxI3-yCIy, wherein a value range of x is 0.5-0.7, and a value range of y is 0.05-0.4. The material has not only good cyan fluorescence and cyan afterglow, but also near-infrared fluorescence characteristics. The application can be applied to manufacturing a new type of light-emitting diode, which emits cyan fluorescence after being excited by specific light in a visible light wave band, exhibits cyan afterglow under specific conditions, and emits near-infrared light after being excited by specific light in a near-infrared light wave band. In the emergency lighting field, the application can be used to design an emergency sign with high visibility, soft light emission and long duration. In the security anti-counterfeiting field, the application can be used to design an anti-counterfeiting sign with high security and difficult to counterfeit.

The invention provides a red afterglow material capable of being excited by natural light and a preparation method of the red afterglow material. The general formula of the red afterglow material is Gd < 3-x > Cax-0.02 GaO6: 0.02 Eu < 2 + >, wherein x is more than or equal to 0.3 and less than or equal to 0.7. When x is more than or equal to 0.3 and less than or equal to 0.6, the afterglow emission attenuation rate of the red afterglow material is gradually slowed down along with the increase of the x value. And when x is equal to 0.6, the red afterglow attenuation rate of the red afterglow material is slowest. And when x is greater than 0.6, the red afterglow attenuation rate of the red afterglow material is increased. The prepared red afterglow material can be excited by visible light and ultraviolet light in any form, the afterglow emission intensity is high, and the afterglow duration can reach one hour. The adopted high-temperature solid-phase preparation method is simple in preparation process, easy to operate and control, high in safety, short in preparation time, high in production efficiency and suitable for industrial large-scale production, popularization and application, and the production cost is greatly reduced compared with the prior art.

This application discloses a long-afterglow visual perception-based road anti-icing material and its preparation method, belonging to the field of road maintenance. It consists of talc powder, a silane coupling agent, modified phosphor, and a conventional de-icing agent. Solid talc powder is placed in an ethanol solvent and stirred until a suspension is formed. An aminosilane coupling agent is added to the suspension and stirred to obtain amino-modified talc powder. Silica-modified phosphor is prepared using a sol-gel method. The phosphor-loaded talc material and de-icing agent are then used to prepare the road anti-icing material. The silane coupling agent effectively combines the phosphor with the de-icing agent matrix, constructing a stable luminescent composite system. This de-icing agent absorbs visible light during the day and continuously releases it at night. The luminescence distribution serves as a visual indicator to determine the coverage of the de-icing agent on the road surface and the need for re-spreading. This solves the problem of de-icing agent dosage during nighttime snow removal, achieving sufficient snow removal while minimizing damage to roads and the surrounding environment.

The invention discloses a fire hose with self-luminous and intelligent monitoring functions and a control and monitoring method, and relates to the technical field of fire fighting equipment, the fire hose comprises a hose body, a self-luminous component and an intelligent monitoring system; the self-luminous assembly comprises a SrAl2O4-based long afterglow luminescent material coating and a built-in waterproof and explosion-proof LED flexible lamp strip, wherein the outer layer of the water hose body is coated with the SrAl2O4-based long afterglow luminescent The intelligent monitoring system is integrated at a water hose connecting buckle, comprises a dual pressure sensor array, an attitude sensor, a LoRa wireless transmission module and an annular LED warning lamp strip, and can realize pressure abnormity grading alarm and water hose arrangement state monitoring. According to the invention, the visibility of a dark environment is improved through dual-mode self-illumination, the problems of insufficient pressure monitoring and water leakage of a connecting buckle are solved through accurate monitoring and visual alarm, and the safety and efficiency of fire rescue are remarkably improved.

The application belongs to the technical field of organic afterglow crystal materials, and particularly relates to a host-guest type organic long afterglow crystal material and a preparation method and application thereof. The host-guest type organic long afterglow crystal material provided by the application ingeniously selects electron-rich diphenylamine material which is easy to crystallize and cheap and easy to obtain as a host material, and simultaneously introduces an electron-rich aniline derivative of the same type which is similar in structure and cheap and easy to obtain as a guest, thereby constructing a series of crystal materials with regular structures, and obtaining a series of new long afterglow light-emitting materials with adjustable colors (from yellow to green). The afterglow time of the material is more than 2s, the material has good afterglow light-emitting performance, and has good environmental stability to water and oxygen, thereby showing the application potential of the material in the fields of information encryption and anti-counterfeiting, and being capable of providing a theoretical basis and a material basis for practical applications such as data encryption and anti-counterfeiting.

The invention provides a weather-resistant stress-excited long-afterglow traffic marking coating and a preparation method thereof. According to the coating, SrAl2O4 (at) SiO2 (at) TiO2 / rGO of a core-shell satellite structure is used as a luminous functional material, and attapulgite, polymer resin and auxiliaries are combined to form a composite system. Through SiO2 coating and TiO2 / rGO satellite point modification, the water resistance and photocatalytic self-cleaning capability of the luminescent material are improved. Solvent-free polyurethane resin is adopted as a base material, and a light reflection microcavity structure is constructed in a coating through a process of spreading glass beads with different particle sizes step by step, so that long-acting afterglow luminescence under mechanical stress or light excitation is realized. The coating has excellent mechanical property, weather resistance and self-cleaning function, and solves the problem of poor environmental tolerance of traditional materials.

The invention relates to the field of intelligent dimming, and discloses an intelligent and low-depth dimming system, which comprises an input part, an EMI (Electro-Magnetic Interference) part, a rectifying and filtering part, a PFC (Power Factor Correction) boosting part, a feedback part, a master control PWM / PFM (Pulse Width Modulation / Pulse Frequency Modulation) part, an intelligent dimming part, a dial-up current regulating part, a light control module, an afterglow removing part, an output rectifying and filtering part, a dial-up color temperature regulating part and an output part, the filtering part is composed of an LF1 and a CX1, and the rectification filtering part is composed of a BD1 and a CBB1 / EC1. Multi-functionalization of a product is achieved through a low-cost scheme, the reliability of the product is improved, the service life of the product is prolonged, the visual effect is optimized through the extremely low dimming depth, the product performance and the user experience are improved, the overall efficiency of the system can reach 85%-95% through reasonable combination of an optional PFC module and high-efficiency topology BUCK / Flyback, and optimal balance can be achieved among energy efficiency, cost and safety.

The application discloses a food contact safety type long-afterglow night light ink composition and a preparation method thereof, and belongs to the technical field of functional materials and fine chemical industry. The application takes a self-designed double-coated modified long-afterglow light-emitting material as a core functional phase, and combines a food-grade water-based connecting resin and a composite rheological additive to construct a full-compliance ink system. The modified material takes SrAl2O4:Eu 2+ ,Dy 3+ as a base body, and is sequentially coated with a 50-100nm dense nanosilica layer and a food-grade carboxylated polyvinyl alcohol layer with a carboxyl content of 5-8mol%. The application breaks through the technical prejudice in the field that "improving barrier property must be accompanied by loss of light-emitting efficiency", and the ink heavy metal migration and other indicators meet the requirements of GB 4806.14-2023, the light-emitting efficiency retention rate is more than 85%, and the application has excellent storage stability and printing adaptability, and is suitable for anti-counterfeiting and decorative printing of food contact packaging.

This invention discloses a highly efficient solar-excited long-wavelength long-afterglow material, its preparation method, and its applications. The material is characterized by its general chemical formula being Sr. 1‑x‑y Ga 2‑z Si2O8:xEu 2+ yLn 3+ zMn 2+ Where 0 < x ≤ 0.1, 0 < y ≤ 0.2, 0 < z ≤ 0.1; the preparation of the highly efficient solar-excited long-wavelength long-afterglow material is carried out according to the chemical formula Sr 1‑x‑y Ga 2‑z Si2O8:xEu 2+ yLn 3+ zMn 2+ The raw materials were weighed according to the stoichiometric ratio, ground and mixed, and then heated and cooled in a corundum crucible to obtain the product. The high-efficiency sunlight-excited long-wavelength long-afterglow material described in this invention has good crystallinity and stability to light, heat, and humidity. It has multiple emission peaks in the 400-800nm ​​range, and the solid-phase method is used, which does not involve strong acid solvents that pollute the environment, produces no harmful waste, and the synthesized sample does not require further purification. It can be matched with commercial blue light chips and has broad application prospects in the fields of lighting, display lamps, and optical electronics.