5262 results about "Perovskite" patented technology

The invention discloses a thiapyran molecule modified solar cell and a preparation method thereof. The cell sequentially comprises an ITO (Indium Tin Oxide) conductive glass layer, a 4-aminotetrahydro-2H-thiapyran-1, 1-dioxide hydrochloride modified [4-(3, 6-dimethoxy-9H-carbazole-9-yl) butyl] phosphonic acid hole transport layer, a Cs0.05 (FA < 0.77 > MA < 0.23 >) < 0.95 > Pb < (I < 0.77 > Br < 0.23 >) 3 wide-band gap perovskite thin film, a phenethyl ammonium iodide passivation layer, an electron transport layer of [6, 6]-phenyl-C61-butyric acid isomethyl ester, a 2, 9-dimethyl-4, 6, 7-tetrahydro-2H-thiapyran-1, 1-dioxide hydrochloride modified [4-(3, 6-dimethoxy-9H-carbazole-9-yl) butyl] the hole barrier layer is made of 1, 7-biphenyl-1, 10-phenanthroline; the electrode layer is made of metal Ag; according to the scheme, the hole transport layer is modified through thiapyran molecules, agglomeration of the hole transport layer is relieved, and a more compact and more uniform self-assembled single layer is generated by inducing favorable crystal orientation. A good bottom interface is obtained based on thiapyran molecule modification, and ordered growth of high-quality perovskite crystal grains is promoted. In addition, the energy level of the hole transport layer is effectively adjusted through thiapyran molecule treatment, and the extraction and transmission of carriers by the hole transport layer are enhanced.

The invention discloses a femtosecond laser etching method and system for a perovskite thin film, and relates to the technical field of semiconductor processing, and the system comprises a laser light source module which is used for generating a femtosecond laser pulse which is high in repetition rate and adjustable in laser power, frequency and beam spread angle; the optical path control module is provided with an optical element group, an optical element alignment system, a beam shaper and a self-adaptive optical element, and is used for adjusting the path, focusing and energy distribution of the laser beam; wherein the adaptive optical element comprises an adjustable deformable mirror and a liquid crystal spatial light modulator. According to the femtosecond laser etching method and system for the perovskite thin film, by combining real-time wavefront monitoring, distortion correction and an optical element driving system, the stability and consistency of an optical path are ensured, and the problem that etching consistency and uniformity are difficult to maintain on a large-area thin film through a traditional etching method is solved; and the performance of the device is unstable and reduced.

The invention discloses a green preparation process of a microwave-assisted synthesized perovskite semiconductor material, which aims at solving the problems of long reaction period, large reagent dosage, heavy pollution and the like of the traditional perovskite preparation process, adopts a novel organic-inorganic hybrid precursor and green solvent system, and accelerates the reaction by microwave radiation. The rapid and environment-friendly synthesis of the material is realized by accurately regulating and controlling microwave parameters and combining multiple processes such as intermittent and collaborative ultrasonic processes. Novel compounds such as nitrogen-containing heterocyclic borate and organic phosphonate are introduced to optimize the performance of the material. The process significantly shortens the preparation period, reduces reagent consumption, improves photoelectric properties, and enhances material stability.

The present disclosure provides a perovskite cell and a preparation method therefor, and a photovoltaic module. The perovskite cell comprises a substrate, and a perovskite layer (3) and an electron transport layer which are sequentially arranged on the substrate, wherein the electron transport layer comprises a C60 layer, and the C60 layer is arranged close to the perovskite layer, wherein the perovskite layer (3) comprises a perovskite material and 1,3-diaminopropane dihydroiodide, and / or the perovskite cell further comprises a passivation layer (4) arranged between the perovskite layer and the C60 layer, and the passivation layer (4) comprises 1,3-diaminopropane dihydroiodide.

The invention provides a method for improving the stability of a perovskite nanocrystal, which comprises the following steps: S1, preparing the perovskite nanocrystal: mixing a perovskite nanocrystal precursor and a micro / mesoporous template to obtain a mixture; calcining the mixture under the condition that the collapse temperature of the micro / mesoporous template is lower than that of the micro / mesoporous template, so as to generate perovskite nanocrystals in the pore channels of the micro / mesoporous template; s2, post-treatment by a hydrothermal method; and S2, dispersing the perovskite nanocrystals obtained in the step S1 in a high-pressure reaction device filled with an inorganic fluoride solution, and treating the mixed solution through a hydrothermal method to obtain the perovskite illuminant. According to the method, the stability of the perovskite nanocrystals can be improved without collapsing the micro / mesoporous template.

The invention discloses an on-line detection method and system for etching quality of a laser perovskite cell, and the method comprises the steps: employing a double-camera alternate working mode, installing high-resolution CCD camera assemblies at two sides of a laser processing head in an X direction, eliminating the shielding of a motion direction, carrying out the scribing quality analysis through combining the submicron optical imaging of the CCD camera assemblies with an image processing algorithm, and carrying out the detection of the etching quality of the laser perovskite cell. According to the method, local adaptive threshold segmentation is put forward, an Otsu method is used for adaptively calculating a binarization threshold, a morphological opening operation is used for removing irrelevant information, an edge searching logic algorithm is used for searching two edges of a scribed line, finally, the two edges and a center line are fitted, and scribed line quality analysis is carried out through the three lines. And real-time power adjustment, position calibration and defect position marking are carried out by detecting the scribing quality, the calculation speed of the high-resolution optical detection system is high, detection can be carried out while machining is carried out, and machining-detection-correction closed-loop control is achieved.

The invention discloses a supported double perovskite photocatalytic material which is prepared by the following steps: putting copper nanoparticles and double perovskite Cs2NaBiCl6 into a water-absolute ethyl alcohol mixed solution, carrying out ultrasonic dispersion, heating the dispersion solution to 55-65 DEG C, carrying out cooling crystallization at a rate of 1-2 DEG C / min, completing the reaction when the temperature is reduced to 25 DEG C, carrying out solid-liquid separation on the reaction product, and washing and drying the solid, the Cu nanoparticle-loaded double-perovskite photocatalytic material is applied to photocatalytic reduction of CO2, the catalyst has the characteristics of high reduction catalysis efficiency and good selectivity, the performance is stable after repeated cyclic utilization, and the material disclosed by the invention is simple in preparation process, high in efficiency and suitable for large-scale production and market popularization and application.

The invention belongs to the technical field of semiconductor photoelectric devices, and particularly discloses a preparation method for realizing growth of ultralow-defect perovskite single crystals based on steric hindrance control, which comprises the following steps: preparing a perovskite single crystal precursor solution: dissolving a perovskite single crystal precursor in a homogeneous solvent with coordination capability to prepare the precursor solution; and generating a perovskite single crystal seed crystal: heating the prepared perovskite single crystal precursor solution until microcrystals appear, selecting to form good crystals, drying, and storing as the seed crystal for future use. And growing the perovskite single crystal: putting the generated perovskite single crystal seed crystal into the perovskite single crystal precursor solution, heating, and growing to obtain the perovskite single crystal. The preparation method comprises the following steps: dissolving a precursor in a homogeneous solvent with coordination capability through a temperature reversal crystallization method, and adjusting the temperature to carry out single crystal growth; according to the steric hindrance theory, the growth temperature is selected by regulating and controlling the solvent proportion, and the perovskite single crystal with ultralow defect density is obtained.

The invention relates to a method and device for high-precision laser selective etching of a curved-surface multilayer film system, and the method comprises the following steps: obtaining a battery image of the surface of a curved-surface perovskite battery through a visual imaging system, and transmitting the battery image to a main control unit; the main control unit locates the position of the P1 line; the distance measuring unit identifies the height between the laser scribing head and the surface of the curved-surface perovskite battery; the moving module drives the laser scribing head to etch the P1 line on the surface of the curved-surface perovskite cell to obtain a P1 scribed line; the main control unit obtains a reference positioning line of the P1 scribed line; an offset value is added on the battery image according to the reference positioning line of the P1 scribed line, so that the P2 line and the P3 line are positioned; and the moving module drives the laser scribing head to etch the P3 line on the surface of the curved-surface perovskite cell to obtain a P3 scribed line. The distance measuring unit can dynamically adapt to the real-time motion state of the workpiece, and the problem of focus deviation is avoided.

The embodiment of the invention provides a laminated cell and a preparation method of the laminated cell, the laminated cell comprises a top cell unit, a bottom cell unit and a composite layer located between the top cell unit and the bottom cell unit, the composite layer has a first surface facing the top cell unit along the thickness direction of the laminated cell, and the first surface is provided with a second surface facing the bottom cell unit. A first passivation isolation layer is arranged on the first surface, and the surface area of the first passivation isolation layer is smaller than that of the first surface. By arranging the first passivation isolation layer on the first surface, the separation effect on the perovskite layer and the composite layer can be improved, the phenomenon of contact between the perovskite layer and the composite layer is reduced, and the possibility of electric leakage of the laminated cell is remarkably reduced, so that the working performance of the laminated cell is ensured. And the surface area of the first passivation isolation layer is smaller than that of the first surface, so that carriers can circulate between the hole transport layer and the composite layer, and normal use of the laminated cell is ensured.

The invention provides a tunable micro-nano laser based on a perovskite phase change material and a preparation method thereof, and belongs to the technical field of micro-nano photoelectron, the tunable micro-nano laser comprises a substrate, and a distributed Bragg reflector, a gain dielectric layer and a reflector which are sequentially arranged on the substrate from bottom to top; wherein the gain medium is a perovskite material with a crystal phase transition characteristic. The substrate is made of a material which is transparent or low in loss to pump light and emitted light; the distributed Bragg reflector is formed by alternately arranging high-refractive-index layers and low-refractive-index layers; the gain dielectric layer is a perovskite thin film layer with a crystal phase transition characteristic, and a perovskite material has a spectrum tuning function in the laser resonant cavity; the reflecting mirror is composed of a metal film. According to the invention, the perovskite material is used as a gain medium and a phase change material at the same time, the wide-range tuning of laser wavelength is realized, and the tuning range can reach several nanometers or even wider; the energy utilization efficiency can be improved, the stability is high, and the method is suitable for various types of tunable micro-nano laser applications.

The invention relates to the technical field of solar cells, and provides a laminated cell and a manufacturing method thereof, which are at least beneficial to improving the efficiency of the laminated cell. The laminated cell comprises a crystalline silicon bottom cell, a middle layer and a perovskite top cell which are sequentially laminated in a preset direction, the middle layer comprises a conductive composite layer, the conductive composite layer is located on the surface, facing the perovskite top cell, of the crystalline silicon bottom cell, and materials of the conductive composite layer comprise a conductive polymer and a metal dopant; the metal grid layer is embedded into one side, far away from the crystalline silicon bottom battery, of the conductive composite layer, and the conductive composite layer exposes the surface, far away from the conductive composite layer, of the metal grid layer; the barrier layer is located on the side, away from the composite layer, of the metal grid layer and covers the surfaces of the metal grid layer and the conductive composite layer.

Solar cell modules and methods of fabrication are described. In an embodiment, a pair of tandem solar cells are a step surface or trench within the top subcell of a tandem solar cell is at least partially filled with another material such as an insulator support or electrically conductive support to transfer stress away from the absorber layer of the top subcell of the tandem solar cells when stacked or connected with ribbon.

The invention relates to the technical field of solar cell module packaging, in particular to a packaging structure for a perovskite-back contact crystalline silicon laminated solar cell and a preparation method of the packaging structure. The packaging structure comprises a front light conversion glass layer, a perovskite top cell layer, an infrared light-transmitting adhesive film layer, a back contact crystal silicon bottom cell layer, an adhesive film layer and a packaging bottom plate which are arranged in sequence, and butyl rubber surrounding the perovskite top cell layer, the infrared light-transmitting adhesive film layer, the back contact crystal silicon bottom cell layer and the adhesive film layer is arranged between the front light conversion glass layer and the packaging bottom plate, and the near infrared transmittance of 780 nm to 1100 nm in the infrared transparent adhesive film layer is 93% to 100%. According to the packaging structure based on the front light conversion glass layer and the infrared light-transmitting adhesive film layer, regulation and control of short-wave ultraviolet and near-infrared spectrums are considered, and the photoelectric property and reliability of the perovskite-crystalline silicon four-terminal laminated device are remarkably improved.

The embodiment of the invention discloses an etching method, an etching device and a solar cell module. The etching method comprises the following steps: controlling a light spot overlapping rate to be smaller than a preset overlapping rate; generating laser with preset performance parameters; shaping the laser into rectangular flat-topped light; and focusing the rectangular flat-topped light into a light spot with a preset size, and etching the perovskite functional layer in the to-be-etched cell according to the light spot overlapping rate. According to the technical scheme provided by the embodiment of the invention, the etching method is set, the perovskite functional layer is etched by adopting point contact, the laser beam adopts rectangular flat-topped light, each pulse independently acts on the film layer, single-pulse etching is performed on the perovskite functional layer in the to-be-etched cell, heat accumulation in an optical pulse overlapping region is avoided, and electrode deposition is more facilitated.

The invention discloses a graphene composite perovskite manganese oxide polycrystalline ceramic and a preparation method and application thereof, and belongs to the technical field of non-refrigeration high-sensitivity infrared detection. The chemical expression of the graphene composite perovskite manganese oxide polycrystalline ceramic is La < 0.81 > (Ca < 0.03 > Sr < 0.16 >) MnO3: Gy, G is graphene, y is the mass fraction of graphene in perovskite manganese oxide composite powder, and y is equal to 0.1-0.2%. The TCR value of the prepared polycrystalline ceramic can reach 30% or above, the Tk value is close to 300K, the polycrystalline ceramic has excellent adaptability to room temperature work and excellent sensitivity to temperature change, and when the polycrystalline ceramic is applied to an uncooled infrared detector, the detection precision of the uncooled infrared detector can be effectively improved.

The invention relates to the technical field of laser scribing equipment, and particularly provides laser scribing equipment for manufacturing and processing a perovskite photovoltaic module. Comprising a workpiece conveying table and a laser scribing mechanism, and two positioning assemblies matched with each other are assembled on the workpiece conveying table; the workpiece conveying table comprises a conveying rack and a lifting rack assembled on the conveying rack, a plurality of conveying rollers used for jointly and horizontally conveying photovoltaic panels are installed at the lifting end of the lifting rack, and air cooling structures are arranged on the conveying rollers. According to the photovoltaic panel machining and conveying device, the two positioning assemblies matched with each other are arranged, and the side blocking assemblies capable of ascending, descending and avoiding are arranged in the positioning assemblies, so that a photovoltaic panel can be quickly repositioned in the machining and conveying process of the photovoltaic panel; through the uniform distribution of the plurality of conveying rollers and the cooling structures of the conveying rollers, the whole plate surface of the photovoltaic panel can be uniformly covered and cooled.

The invention discloses an A-site high-entropy solid oxide fuel cell cathode material as well as a preparation method and application thereof, and provides an A-site high-entropy solid oxide fuel cell cathode material Pr < 0.2 > M < 0.2 > La < 0.2 > Ba < 0.2 > Sr < 0.2 > Co < 0.8 > Fe < 0.2 > O < 3-delta > with a perovskite phase. The preparation method comprises the following steps: S1, weighing multi-element metal nitrates, and mixing to obtain a first mixed solution; s2, dissolving ethylenediamine tetraacetic acid in ammonia water to obtain a second mixed solution; mixing the first mixed solution, the second mixed solution and citric acid to form a mixed precursor solution; s3, carrying out second heating treatment on the mixed precursor solution, and adjusting the pH value to form a gel precursor; and S4, carrying out pre-sintering treatment, third heat treatment and calcination treatment on the gel precursor to obtain a high-grade powder precursor, and carrying out ball milling and sieving treatment to obtain the A-site high-entropy solid oxide fuel cell cathode material. The cathode material is high in stability and good in chemical compatibility with a barrier layer GDC, provides high-quality mass transfer channels and active sites for O2 / O- / O2-, and has good electrochemical performance at medium and low temperatures.

The tandem cell includes a bottom cell including a substrate. The substrate has a first side and a second side, the first side has a first textured surface including at least one first protrusion structure. The bottom cell further includes a tunneling dielectric layer and a doped conductive layer. A surface of the doped conductive layer has a micro textured surface including at least one micro protrusion structure, and the micro protrusion structure is smaller than the first protrusion structure. The tandem cell further includes a composite layer conformal to the micro textured surface. The tandem cell further includes a top cell formed on the composite layer. The top cell includes a first transport layer, a perovskite substrate, a second transport layer, a transparent conductive layer, and an anti-reflection layer stacked sequentially. The first transport layer is conformal to the micro textured surface.

The utility model discloses a perovskite cell assembly and a solar cell. The perovskite battery assembly comprises at least two perovskite batteries which are electrically connected. The perovskite battery assembly comprises a substrate, a bottom electrode layer, a perovskite functional layer, a top electrode layer and an isolation part, the bottom electrode layer is located on the surface of the substrate, and the bottom electrode layer is provided with a through first scribing groove; the perovskite functional layer is located on one side, far away from the substrate, of the bottom electrode layer, and the perovskite functional layer is provided with a second scribing groove; the top electrode layer is located on the side, away from the bottom electrode layer, of the perovskite functional layer, the top electrode layer is provided with a third scribed line groove, and the third scribed line groove penetrates through the top electrode layer and the perovskite functional layer; and the isolation part is filled in the third scribing groove. According to the technical scheme of the embodiment of the utility model, the risk of internal short circuit of the perovskite cell can be reduced, and the production yield of the perovskite cell assembly is improved.

The invention relates to a solar cell and a preparation method thereof, a photovoltaic module, a system and an electric device. The solar cell comprises a first electrode layer, an electron transport layer, an interface passivation layer, a perovskite light absorption layer and a second electrode layer which are arranged in a stacked mode. The interface passivation layer comprises an ionic polymer passivator, a main chain atom of the ionic polymer passivator is at least connected with a substituent R1, R1 comprises a positively charged nitrogen heterocyclic ring, and the ionic polymer passivator further comprises an anion X combined with the positively charged nitrogen heterocyclic ring.

The invention discloses a preparation method of a perovskite type high-temperature-resistant CO2 methanation catalyst, which comprises the following steps: firstly, preparing CaZrO3, then dissolving CaZrO3 powder, a nickel source, a soluble organic fuel and a certain amount of ethylene glycol in deionized water according to a molar ratio of 1: (0.2-0.8): (0.1-0.5), stirring to obtain a dispersion liquid, then putting carrier monoclinic ZrO2 powder in the dispersion liquid, and stirring to obtain the perovskite type high-temperature-resistant CO2 methanation catalyst. The preparation method comprises the following steps: uniformly mixing the raw materials, carrying out ultrasonic treatment for 5-12 hours, heating the obtained mixture at 300-550 DEG C until spontaneous combustion, carrying out high-temperature calcination at 800-900 DEG C for 1-2 hours after flame is extinguished, collecting the calcined product, and carrying out ball milling and granulation to obtain the NiO-CaZrO3 / ZrO2 catalyst with a certain mesh number. According to the preparation method of the catalyst, a solution combustion method is introduced in the preparation process, so that active components of the prepared catalyst are fully dispersed, and further high-temperature calcination is performed on the basis, so that the active components are stably anchored on the surface of the ZrO2 carrier, and the catalytic activity and the stability of the catalyst are improved.

The invention provides a perovskite thin film and a preparation method thereof, and belongs to the technical field of perovskite thin films, and the preparation method comprises the following steps: S1, preparing modified octa (aminophenyl trioxosilane); s2, preparing a precursor solution; and S3, spin-coating the pretreated substrate with the precursor solution, dropwise adding ethyl acetate at the same time, performing illumination treatment under ultraviolet light, and then immediately performing micro-vibration and curing annealing on the substrate to obtain the perovskite thin film. According to the perovskite thin film obtained by the invention, the purposes of synchronously increasing the open-circuit voltage and the filling factor of a solar cell, improving the photoelectric conversion efficiency and enhancing the long-term stability can be achieved.

The invention belongs to the technical field of perovskite material preparation, and particularly discloses a preparation method of a lead-tin doped perovskite material in an aqueous solvent, and the method comprises the following steps: uniformly stirring and mixing a halogen source body, a reducing agent, an antioxidant and a solvent I in a high-temperature bath pot; adding a lead ion source body and a tin ion source body, and reacting in the air to form a uniform solution; and then adding an A-site cation source body, and cooling to obtain the lead-tin doped perovskite microcrystal. And dissolving the prepared lead-tin doped perovskite microcrystal in a solvent II, adding a reducing agent and an antioxidant, forming a film by adopting an anti-solvent method, and annealing to form the lead-tin doped perovskite film. The preparation method of the lead and tin doped perovskite material in the aqueous solvent is environment-friendly, low in cost and simple in synthesis condition, and prepared perovskite microcrystals and films are smooth in surface, high in density, few in defect and good in air stability.

The invention discloses an anti-interference resistance detection circuit board and system based on four-wire system measurement, and relates to the technical field of industrial automatic detection. Aiming at the problems of low measurement precision, weak interference resistance and limited channel expansion of a traditional two-wire system, a current loop and a voltage sampling loop which are independently and electrically isolated are adopted, and a lead resistance error is eliminated through Kelvin connection; an EMI filter, a photoelectric coupler and a double-layer shielding cable are integrated, so that the influence of electromagnetic interference and a ground loop is inhibited; a single circuit board supports the parallel connection of at least two measuring units, realizes the cascade connection of multiple boards by combining an EtherCAT bus, and supports 384 channels at most. The measuring error is smaller than or equal to + / -0.1%, the single-channel detection time is smaller than or equal to 10 ms, the requirements of high-density and high-beat scenes such as perovskite photovoltaic glass are met, the method is suitable for 100-100 Momega wide-range resistance measurement, the signal transmission error rate in the industrial strong electromagnetic environment is extremely low, and the detection precision and the system reliability are remarkably improved.

The invention is suitable for the technical field of inorganic luminescent materials, and provides a fluorescent powder material based on a double-perovskite structure and a preparation method and application thereof. The general chemical formula of the fluorescent powder is Ca2AlNbO6: xEu < 3 + >, wherein x is a molar fraction of 0.06 to 0.30; the excitation spectrum coverage range of the fluorescent powder under the condition of monitoring the emission wavelength of 615 nm is 260-500 nm, and the emission main peak is located at 615 nm; when x is equal to 0.18, the quantum efficiency under the excitation of 396nm ultraviolet light is greater than or equal to 91%, and the red light emission ratio is greater than or equal to 85%. According to the invention, Ca2AlNbO6 double perovskite is taken as a substrate, and a red fluorescent powder material with wide-spectrum excitation and high quantum efficiency is designed through Eu < 3 + > high-concentration doping and local symmetry regulation and control design engineering, so that the characteristics of high quantum efficiency, efficient red light emission, wide-spectrum excitation and excellent concentration quenching resistance are realized.

The present application relates to a solar cell and a preparation method therefor, and a photovoltaic assembly, a system and an electric apparatus. The solar cell comprises a first electrode layer, a first hole transport layer, a perovskite light absorption layer and a second electrode layer, which are arranged in a stacked manner, wherein components of the first hole transport layer comprise P-type tin oxide. The solar cell has a relatively high photoelectric conversion efficiency.

The invention particularly relates to a preparation method of a large-size rare-earth-doped phenylethylamine lead bromide perovskite single crystal and the perovskite single crystal, and solves the technical problems that the existing large-size rare-earth-doped two-dimensional perovskite single crystal needs higher nucleation supersaturation degree, the preparation period is long, and part of rare-earth bromide is extremely easy to absorb moisture, so that the crystal quality is reduced. The preparation method of the large-size rare earth doped phenylethylamine lead bromide perovskite single crystal and the perovskite single crystal comprise the following steps: 1) weighing; the preparation method comprises the following steps: weighing phenylethylamine hydrobromide, lead bromide and rare earth metal bromide, and putting into a glass bottle; 2) obtaining a precursor solution; 3) obtaining a millimeter-sized crystal; 4) screening seed crystals; (5) growing seed crystals; in the step (4), the open container B stands at a preset temperature until the seed crystal continues to grow into the rare earth doped phenylethylamine lead bromide perovskite single crystal with the preset size, the size can reach the centimeter level, and an important supporting effect is achieved for promoting performance research of the rare earth doped two-dimensional perovskite single crystal.

The invention discloses a method for preparing a fluorescent material based on a waste NCM ternary lithium battery and application of the fluorescent material, and the preparation method of the fluorescent material comprises the following steps: disassembling the waste NCM ternary lithium battery to obtain a nickel cobalt lithium manganate waste material and preparing the nickel cobalt lithium manganate waste material into powder; impurities and part of ions in the nickel cobalt lithium manganate waste powder are removed, and manganese-containing powder is prepared; and mixing manganese-containing powder, a first perovskite fluorescent raw material, a ligand, a protective material and a solvent, heating and stirring under a vacuum condition, heating under a nitrogen atmosphere, adding a second perovskite fluorescent raw material solution into the system for reaction, and cooling after the reaction is finished to obtain the manganese-doped perovskite fluorescent material. According to the method, the efficient recycling of the waste NCM ternary lithium battery is realized, the preparation cost of the fluorescent material is reduced, the resource recycling rate is improved, the environmental pollution is reduced, and the manganese-doped perovskite fluorescent material is simple to operate when chloride ions are detected after being loaded on the carrier and can be used for field detection.

The invention discloses a multicolor photoelectric response synaptic device and a preparation method thereof. The multicolor photoelectric response synaptic device is of a multi-layer structure. The multilayer structure comprises a transparent conductive electrode layer, a hole transport material layer, a lead-free perovskite layer, an electron transport material layer, an organic semiconductor charge transfer compound layer and a metal electrode layer in sequence along the light incidence direction. The preparation method comprises the steps of preparing the transparent conductive electrode layer; sequentially preparing a hole transport material layer, a lead-free perovskite layer, an electron transport material layer and an organic semiconductor charge transfer compound layer on the transparent conductive electrode layer through a spin coating method; and preparing the metal electrode layer on the organic semiconductor charge transfer compound layer through vacuum evaporation. The multicolor photoelectric response synaptic device is reasonable in structural design, can realize ultraviolet-visible-near infrared multicolor photoelectric synaptic function simulation, can realize a color identification function on red light, green light and blue light in a visible light wave band, and has a good application prospect.