1917 results about "Perovskite" patented technology

The invention provides a preparation method of a laminated cell, the laminated cell and a photovoltaic module, and can be widely applied to the photovoltaic technical field, the preparation method of the laminated cell comprises the following steps: providing a bottom cell, and forming a composite layer on the bottom cell; a first transmission layer is formed on the composite layer, and a skeleton layer is formed on the first transmission layer through double-source evaporation; wherein a first evaporation source of the double-source evaporation comprises inorganic cesium salt, and a second evaporation source of the double-source evaporation comprises inorganic lead salt and inorganic rubidium salt; coating organic salt on the framework layer to form a perovskite layer; forming a second transmission layer and an electrode on the perovskite layer to obtain a laminated cell; wherein carriers of the first transmission layer and the second transmission layer are different. The framework layer is formed through double-source evaporation, the proportion is better controlled, through rubidium and lead, a positive effect can be generated on crystallization, stress release and the like of perovskite in the crystallization process, part of rubidium salt can be combined with PbI2 decomposed on the surface, ion migration is reduced, and the device stability is improved.

The invention relates to the technical field of perovskite thin film detection, in particular to a perovskite blade coating thin film defect detection device and method based on real-time visual monitoring, and the device comprises a support, an image acquisition unit, an illumination unit and a self-adaptive adjustment system which are arranged in a glove box and located at a coating machine, a flash evaporation box and a heating stage respectively; the camera and the lens are installed on the adjusting frame, and the first driving piece achieves height adjustment. The light source is installed on the supporting frame and controlled by the second driving piece to ascend and descend. The image analysis unit evaluates the definition, contrast and illumination uniformity of the acquired image, and the control unit automatically adjusts the height and angle of the light source and the position of the camera according to the result so as to keep the image quality stable; according to the scheme, real-time monitoring is carried out in the working procedures of coating, flash evaporation, heat treatment and the like, the comprehensiveness, real-time performance and accuracy of thin film detection are effectively improved, influences caused by environmental fluctuation are avoided, and the accuracy and consistency of defect recognition are guaranteed.

The invention belongs to the technical field of catalytic materials and hydrocarbon reforming, and particularly relates to a high-entropy catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a metal salt solution containing lanthanum, chromium, copper, zinc, manganese, nickel, iron and cobalt ions with a chelating agent and a dispersing agent for reaction, carrying out ultrasonic cavitation treatment to obtain sol, adjusting the pH value, gelatinizing under an oil bath heating condition to obtain a colloidal precursor, drying, and calcining in an air atmosphere to obtain a perovskite type high-entropy oxide precursor; and then treating in a reducing atmosphere to obtain the FeZnCuNiCo perovskite type high-entropy alloy catalyst which contains metal components of La, Cr, Ni, Mn, Fe, Zn, Cu and Co and takes a multi-metal alloy active center of Fe-Zn-Cu-Ni-Co as a main component. The high-entropy catalyst can meet the harsh requirements of high temperature, strong carbon deposition driving force and long-period operation in a propane dry reforming reaction, and is suitable for industrial application scenarios of continuous production of high-temperature synthesis gas.

The invention belongs to the technical field of wastewater treatment, and particularly relates to a catalytic filler, a preparation method and application of the catalytic filler to treatment of organic matters in high-salinity wastewater through electrochemistry and ozone. Wherein the catalytic filler is prepared from the following components in percentage by mass: 5-10% of a carbon-coated high-entropy perovskite composite material, 10-15% of a binder and the balance of a carbon-based carrier; the carbon-coated high-entropy perovskite composite material is formed by compounding lanthanide series high-entropy perovskite oxide and carbon microspheres. The invention also provides a method for treating organic matters in high-salinity wastewater by using the catalytic filler through electrochemistry in cooperation with ozone. The electrochemical reaction and the ozone reaction are combined, a conductive three-dimensional electrode network is constructed by utilizing the catalytic filler, the cathode plate and the anode plate, the synergistic effect of the electrochemical reduction reaction and the catalytic ozonation in the oxidation process is promoted, the degradation of intractable pollutants by the ozone under the assistance of electrochemistry is realized, and intractable organic pollutant molecules are better decomposed.

The invention discloses a wind-solar-storage integrated direct-current micro-grid device and a control method, and relates to the technical field of rural distributed energy. The device comprises a perovskite photovoltaic module array, a vertical axis fan set, a lithium iron phosphate energy storage module, a direct-current power distribution unit, an intelligent control module and a household direct-current terminal, each energy unit and a load are directly connected through a direct current bus, AC / DC conversion loss is reduced, the intelligent control module dynamically adjusts a wind-solar-storage cooperative operation strategy based on illumination, wind speed and electrical load data, and the functions of five-hour stable off-grid power supply and peak-valley arbitrage are achieved. The method adapts to a rural farm house roof resource concentration scene, solves the problems of high loss and poor off-grid stability of a traditional alternating current micro-grid, remarkably improves the energy utilization efficiency, reduces the electricity utilization cost of farmers, and can be widely applied to energy transformation projects in rural areas such as coastal areas.

The invention belongs to the field of photovoltaic modules, and discloses a perovskite crystalline silicon laminated photovoltaic module and a preparation method thereof.The photovoltaic module comprises front plate glass, and a top cell perovskite layer, a first adhesive film layer, a bottom cell crystalline silicon cell layer, a second adhesive film layer and back plate glass are sequentially laid on one side of the front plate glass; the edges of the top cell perovskite layer, the first adhesive film layer, the bottom cell crystalline silicon cell layer and the second adhesive film layer are wrapped and sealed through a composite frame, the composite frame comprises a substrate with the wall thickness of 0.1-2mm, the surface of the substrate is provided with an anodic oxide layer with the thickness of 4-6mu m, and the surface of the anodic oxide layer is covered with a polyimide layer with the thickness of 30-1mm. The laminated photovoltaic module adopts the composite frame to replace the existing butyl rubber for sealing, so that the metalized edge sealing is perfectly fused into the low-temperature laminating process, the sealing performance is superior to that of the butyl rubber, and the service life of the laminated photovoltaic module is prolonged.

The invention relates to the technical field of organic compound solar cells, and provides a large-size perovskite assembly pre-illumination synergistic aging test system and method, and the system comprises a light attenuation subsystem, a current-voltage test subsystem, and a control and region light supplement array subsystem. The method comprises the following steps: the light attenuation subsystem obtains the physical and chemical state change of the perovskite component through processing dual-band cooperative irradiation; the current-voltage test subsystem calculates the variance of the carrier lifetime to obtain a performance uniformity evaluation result of the perovskite assembly; a performance uniformity evaluation result forms a PID algorithm output signal through the control subsystem; the control subsystem processes a PID algorithm output signal to obtain an LED intensity adjusting signal for each light supplementing area; lED intensity adjusting signals pass through the area light supplementing array subsystem to form a uniform illumination environment, and a compensated perovskite component surface light field is obtained. According to the invention, a multi-parameter coupled accelerated aging platform is provided for the reliability research of the perovskite component.

The invention discloses a perovskite / crystalline silicon laminated cell based on polycrystalline silicon tunnel junction and interface modification, and belongs to the field of photovoltaic technology. The laminated cell is sequentially provided with a crystal silicon bottom cell, a polycrystalline silicon tunnel junction, an interface modification layer and a perovskite top cell from bottom to top. The polycrystalline silicon tunnel junction comprises an n-type polycrystalline silicon layer, an intrinsic layer and a p-type polycrystalline silicon layer from bottom to top; the doping concentration of the n-type polycrystalline silicon layer is gradually reduced towards the intrinsic layer, and the doping concentration of the p-type polycrystalline silicon layer is increased towards the direction far away from the intrinsic layer; the interface modification layer is arranged between the p-type polycrystalline silicon layer and the perovskite top cell; and the interface modification layer is adjacent to an electron transport layer of the perovskite top cell. Through the change design of the doping concentration of the polycrystalline silicon tunneling junction and the design of the interface modification layer and the hole transport layer, the problem of interface compatibility between the polycrystalline silicon tunneling layer and the perovskite top cell and the problem of poor stability of the laminated cell are solved, and the performance of the laminated cell is comprehensively improved.

The invention relates to the technical field of photovoltaic packaging materials, in particular to a packaging composite material for a perovskite mine and a preparation method of the packaging composite material. The packaging composite material for the perovskite mine comprises a creep-resistant layer, a barrier layer and a low-temperature cross-linking layer, the creep-resistant layer comprises polyolefin resin, silane grafted POE (Polyolefin Elastomer) resin, an irradiation cross-linking agent and a first antioxidant; the barrier layer comprises polyolefin resin master batch and a free radical trapping agent; the low-temperature crosslinking layer comprises EVA resin, modified EVA resin, a low-temperature crosslinking agent, an anti-hydrolysis agent and a second antioxidant. According to the packaging composite material for the perovskite, the creep-resistant layer, the barrier layer and the low-temperature cross-linking layer are compounded, and the components of each layer are regulated and controlled, so that the water vapor barrier property, the high-temperature creep resistance, the damp-heat aging resistance and the like of the packaging composite material can be remarkably improved on the basis of reducing the corrosion damage to the perovskite material.

The invention discloses a preparation method and application of a multimode luminescent cesium yttrium chloride lead-free perovskite luminescent material. In the specific synthesis process, firstly, precursor materials-cesium carbonate, yttrium carbonate and cerium acetate are dissolved in a mixed solution of glacial acetic acid and hydrochloric acid, and a precursor solution is obtained; then dissolving a certain amount of antimony acetate with acetonitrile to form an anti-solvent solution; and finally, adding the precursor solution into the anti-solvent solution to obtain the Sb / Ce double-doped cesium yttrium chloride lead-free perovskite luminescent material. During application, the Cs3YCl6 Sb and the Cs3YCl6 Sb / Ce luminescent materials are combined for use to form a pattern, and protected information can be decrypted through a specific excitation wavelength. According to the invention, the cesium yttrium chloride lead-free perovskite luminescent material capable of realizing multimode luminescence can be prepared in a short time.

The invention belongs to the field of light-emitting diodes, and discloses a preparation method of a blue-light perovskite thin film containing a sulfonate additive and a light-emitting device of the blue-light perovskite thin film. According to the technical scheme, sulfonate functional additives (such as methyl methanesulfonate and the like) with the addition amount being 0.5%-1.5% of the molar weight of lead ions are introduced into a full-inorganic CsPb (BrxCl1-x) 3 perovskite precursor solution, the molar ratio of chlorine to bromine is controlled to be 0.5: 1-2: 1, and the thin film is formed through spin coating and annealing treatment at the temperature of 110-130 DEG C. Sulfonate groups in additive molecules are effectively coordinated with uncoordinated lead ions in perovskite crystals, so that defects of grain boundaries and surfaces are passivated, and a non-radiative recombination center is inhibited; meanwhile, accurate adjustment of the wavelength of the blue light is realized through regulation and control of the halogen proportion. A blue light perovskite light-emitting diode device prepared based on the modified thin film realizes high-brightness, high-efficiency and wavelength-adjustable blue light emission.

The invention provides an anion-doped perovskite type titanate material and a preparation method and application thereof, the structural formula of the anion-doped perovskite type titanate material is AxByTiOzN1-z, A is an alkali metal element, B is a rare earth element, N is an anion element, 0 lt; x is less than or equal to 1, 0lt; y < = 1, 0lt; z < = 4. The prepared anion-doped perovskite type titanate material is applied to a negative electrode of a lithium ion battery, and compared with a traditional perovskite type titanate material, the anion-doped perovskite type titanate material has better fast charging performance and power characteristics, ultra-long cycle life and excellent safety.

The invention discloses a laser etching dust extraction flight following system and a control method, and relates to the technical field of thin film solar cell manufacturing. The following system comprises a focusing dust extraction module, a following driving module, a cooperative control unit and a negative pressure dynamic adjusting module. The cooperative control unit comprises a following PLC controller and a motion control card, the following PLC controller synchronously obtains path planning information from a galvanometer flight system of a laser beam and generates a displacement instruction, and the displacement instruction is sent to a following driving module through the motion control card; and the following driving module and a galvanometer scanning module of the galvanometer flight system are synchronously triggered, and the following driving module moves according to the displacement instruction and controls the center of the dust extraction cover body and the etching point of the laser beam to coaxially move in a following manner. The method is low in dust removal efficiency and series resistance, good in parameter stability, low in equipment maintenance cost and suitable for processing large-size thin film batteries such as perovskite and cadmium telluride.

The invention discloses a preparation method of an iron-doped cerium-based perovskite type high-selectivity Cu ion capture stabilizing agent and application of the stabilizing agent in heavy metal pollution remediation, and the stabilizing agent is prepared through a sol-gel method and comprises the steps that cerous nitrate and citric acid are dissolved in water, and the mixture is heated and stirred to be gel-shaped; standing the gel solution in a drying oven at a constant temperature to obtain a Fe-Ce-PVSK precursor; grinding the precursor into powder, putting the powder into a quartz boat, and calcining in an air atmosphere through a horizontal tube furnace to obtain a product; and finally, washing to be neutral to obtain the iron-doped cerium-based perovskite stabilizing agent. Due to the high oxygen vacancy concentration and rich active sites, the stabilizing agent has high selectivity and high adsorption capacity and has specific capturing capacity on Cu < 2 + >. The preparation method has mild reaction conditions. The stabilizing agent can effectively reduce the bio-availability of heavy metals in a polluted matrix, promote healthy growth of plants, and realize pollution restoration and ecological function recovery at the same time.

The invention discloses a double-perovskite thin film material, a preparation method thereof and a double-perovskite solar cell, and relates to the technical field of perovskite materials. The double perovskite thin film material comprises A2BCX6 type double perovskite, A is an alkali metal cation, B is a monovalent metal cation, C is a trivalent metal cation, and X is a halogen anion; the additive is a compound comprising a benzene ring and at least two sulfydryl substituted at different positions of the benzene ring. According to the embodiment, the composite center of the interior and interface of the double-perovskite thin film material can be reduced, the nucleation density in the preparation process of the double-perovskite thin film is reduced, the double-perovskite film layer has high crystallinity and larger grain size, the grain boundary in the film layer is reduced, the grain boundary defect is passivated, and the performance of the double-perovskite thin film is improved. And the photoelectric conversion efficiency of the solar cell containing the double perovskite thin film material can be improved.

The invention discloses a wide-temperature-range perovskite optical storage material and a preparation method and application thereof, the chemical general formula of the wide-temperature-range perovskite optical storage material is CsCdCl3: xSb < 3 + >, yMn < + >, Mn < + > is Zr < 4 + >, Sn < 2 + >, Hf < 4 + > or Gd < 3 + >, x is more than 0 and less than 0.06, and y is more than 0 and less than 0.02. The perovskite crystal can generate free carriers under excitation of X-rays or 365-nanometer ultraviolet light, the carriers can be stored in a crystal defect trap, and the storage temperature of the carriers covers an ultra-wide temperature range from 100 K to 350 K, so that wide-temperature-range X-ray imaging, information storage and anti-counterfeiting application can be realized.

The invention discloses a blue-light perovskite light-emitting diode based on a hydrogen bond network and a preparation method thereof, 3-(5-fluoropyridine-2-yl) acrylic acid hydrochloride molecules are added into a perovskite precursor solution, non-radiative recombination is reduced by passivating defects, and the molecules cooperate with ligands and octahedrons to construct the hydrogen bond network in the crystallization process, so that the blue-light perovskite light-emitting diode based on the hydrogen bond network is obtained. The stability of the octahedral framework is enhanced, ion migration is effectively inhibited, the high-efficiency and high-stability blue-light PeLED is finally obtained, and the external quantum efficiency and the operation stability of the blue-light PeLED are remarkably improved.

The invention provides a pixelated perovskite-based array X-ray imaging detector preparation method and system and a medium, and the method comprises the steps: selecting a polyimide film, and forming a through hole array pattern on the polyimide film; performing layered ablation on the polyimide film based on a laser drilling process to obtain a through hole; injecting UV peelable glue into the through hole to form a bottom barrier layer, jet-printing an annular glue ridge on the inner wall of the through hole to form a side wall partition, and depositing an Au electrode layer; removing the UV peelable glue by adopting a UV glue stripping solution, and growing perovskite crystals in the through holes based on a solution method or a solid-phase melting method; preparing a TFT (Thin Film Transistor) array on the polyimide film, and forming an insulating coating at the bottom of the polyimide film by adopting an evaporation or chemical vapor deposition process to obtain an imaging detector; according to the invention, high-precision and high-reliability integration of the polyimide film and the TFT array is realized, the charge collection efficiency is improved, the signal crosstalk is reduced, and micron-sized pixel size detection is realized.

The utility model belongs to the technical field of crucibles, and particularly relates to a perovskite evaporation source crucible assembly which comprises a quartz crucible with an opening at one end, at least one heat conduction piece arranged in the quartz crucible and a filtering piece arranged in the quartz crucible and located above the heat conduction piece. And the filtering piece covers the upper opening of the quartz crucible. According to the utility model, through the arrangement of the honeycomb-shaped heat conduction member and the filtering member, the original perovskite raw material is easier to volatilize, the loss of heating power is reduced, the time for stabilizing the deposition rate is shortened, and the large-scale mass production is facilitated; the filter screen is additionally arranged, so that raw materials are more conveniently prevented from splashing to pollute other raw materials, large blasting-boiling particles can be filtered out and splashed to a substrate in the evaporation process, a film layer grows finer and smoother, the quality is better, and defects caused to the film layer are avoided.

The invention provides a novel perovskite cell and a preparation method thereof, the novel perovskite cell comprises an antireflection film stack layer, a glass substrate, an equivalent refraction layer, a hole transport layer, a perovskite layer, an electron transport layer and a top electrode which are arranged in sequence, the antireflection film stack layer is used for constructing refractive index transition between air and the glass substrate, and the hole transport layer is used for transmitting the hole transport layer. The absolute amount of effective light entering the battery is increased; the target effective refractive index of the equivalent refraction layer is associated with the first refractive index of the glass substrate and the second refractive index of the hole transport layer, and is used for constructing refractive index transition between the glass substrate and the hole transport layer so as to reduce the interface reflection loss of the perovskite cell; it is ensured that incident light passing through the glass substrate penetrates to the perovskite layer without significant loss. Through the superposition design, the utilization rate of light in the battery can be effectively improved, and the power generation efficiency of the battery is further improved.

The invention belongs to the technical field of photoelectric materials and devices, and particularly relates to a perovskite thin film and a preparation method and application thereof. A fluorine-containing phosphazene compound is used as a ligand and is mixed with a perovskite precursor solution composed of lead iodide, formamidine iodine and cesium iodide, spin coating is performed, the fluorine-containing phosphazene compound and part of formamidine cations form hydrogen bonds, part of formamidine cations are anchored at the bottom of a perovskite film, Cs-formamidine cations are uniformly distributed, and the perovskite film is prepared. Meanwhile, the fluorine-containing phosphazene compound and Pb < 2 + > form a coordinate bond, Pb < 2 + > defects are passivated, and the perovskite thin film is obtained through anti-solvent treatment and annealing treatment. The fluorine-containing phosphazene compound interacts with the components in the perovskite precursor solution, so that the nucleation rate of perovskite can be increased, the crystallization rate can be slowed down, the tensile stress can be eliminated, the perovskite does not enter crystal lattices, and the stability and crystallinity of the film are guaranteed. The perovskite thin film can be used for an inverted perovskite solar cell, and the performance and the stability of a device are improved.

The invention is applicable to the technical field of photoelectricity, and provides a single-matrix white-light rare earth lead-free perovskite nanocrystal, a preparation method and application, and the single-matrix white-light rare earth lead-free perovskite nanocrystal is Eu < 3 + > ion doped Cs3TbCl6 nanocrystal. The rare earth ion Eu < 3 + > is doped into the Cs3TbCl6 nanocrystal, full-spectrum white light emission of blue light (matrix self-limiting state exciton emission), green light (Tb < 3 + > ion emission) and red light (Eu < 3 + > ion emission) is obtained, excellent thermal stability and environmental stability are achieved, and the nanocrystal material also shows excitation light dependent color adjustable emission (blue light, green light, red light and white light) and has good application prospects. The nanocrystal prepared based on a solution method can be applied to large-area flexible photoelectric devices; the fluorescent conversion layer can be used as a fluorescent conversion layer of a white light emitting diode with a high color rendering index, and can also be applied to anti-counterfeiting and information encryption.

The invention provides a silicon wafer polishing solution, a silicon wafer polishing method thereof, a silicon wafer and a solar cell. The silicon wafer polishing solution comprises first inorganic particles, second inorganic particles, ammonium persulfate, sophorolipid and a solvent, the particle size of the first inorganic particles is smaller than that of the second inorganic particles, and the silicon wafer polishing solution is alkaline. Therefore, the silicon wafer can be polished in a mode of simultaneously carrying out chemical etching and mechanical grinding on the silicon wafer, the concave-convex height difference of line marks on the surface of the silicon wafer can be effectively reduced, even no obvious line marks penetrating through the silicon wafer exist, and then the surface flatness of the silicon wafer is improved; when a silicon wafer polished by the polishing solution is used for a perovskite / crystalline silicon laminated cell, the deposition quality of a thin film in the perovskite top cell can be effectively improved, and the overall efficiency of the cell is further improved.

The invention discloses a high-entropy perovskite catalytic material and a preparation method and application thereof, and belongs to the technical field of catalysts.The preparation method comprises the steps that soluble La < 3 + > salt, soluble Co < 2 + > salt, soluble Cu < 2 + > salt, soluble Fe < 3 + > salt, soluble Mn < 2 + > salt and a soluble X ion source (X is Ga, Zn or Zr) serve as raw materials, a complexing agent and water are added to form a mixed solution, a head product is obtained through a solution combustion method, and the high-entropy perovskite catalytic material is obtained through calcination. The chemical formula of the high-entropy perovskite catalytic material is La (CoaCubFecMndXe) O3. The high-entropy perovskite catalytic material provided by the invention has excellent thermal stability, and can still keep good catalytic activity and excellent catalytic stability at high temperature. When the high-entropy perovskite catalytic material prepared by the method is used as a catalyst for CO2 hydrogenation to prepare ethanol, the high-entropy perovskite catalytic material has excellent ethanol selectivity.

The invention relates to a double-coordination passivated red-light perovskite quantum dot and a preparation method and application thereof. The preparation method comprises the following steps: preparing a monovalent cation precursor from cesium carbonate, 1-octadecene and oleic acid; preparing a lead source precursor from lead halide, zinc halide, 1-octadecene, diisooctyl hypophosphorous acid and oleylamine; thermally injecting the monovalent cation precursor into the lead source precursor, and cooling to prepare a perovskite quantum dot solution; performing anti-solvent purification on the perovskite quantum dot solution to obtain red light perovskite quantum dots; a process of preparing a double-coordination passivated red light perovskite quantum dot from the red light perovskite quantum dot and taurosulfonamide hydrochloride; the invention also discloses an application of the double-coordination passivated red light perovskite quantum dot prepared by the preparation method in preparation of an electroluminescent diode. The post-treatment passivation operation method is simple and convenient, and the quantum dot treated by the double-coordination ligand achieves the purpose of preparing the halide perovskite quantum dot with excellent optical performance and excellent performance of the prepared electroluminescent diode.

The invention discloses graphene-copper composite conductive paste and a preparation method and application thereof. The paste comprises graphene coated copper composite powder, a low-melting-point alloy bonding agent, functional glass powder and an organic carrier. Wherein the graphene coated copper composite powder is prepared by growing few layers of graphene in situ on the surface of copper powder through a chemical vapor deposition method, and a core-shell enhanced conductive unit is formed. According to the invention, the complete replacement of copper to silver (the silver content is 1t, 1%) in a photovoltaic electrode material is realized for the first time, meanwhile, the performance loss of a pure copper system is made up through the enhancement effect of graphene, and the photoelectric conversion efficiency reaches 97% or more of that of commercial silver paste on the basis that the material cost is reduced to 1 / 60 of that of the silver paste. The slurry is suitable for electrode preparation of various efficient photovoltaic cells such as HJT, TOPCon and perovskite, and has remarkable economic benefits and strategic significance.

The invention relates to the technical field of solar cells, in particular to an interface regulation and control method for inhibiting electrode failure of a perovskite device, which comprises the following steps: (1) cleaning a transparent conductive layer with P1 laser scribing to obtain a clean transparent conductive substrate; sequentially preparing a first carrier transport layer, a perovskite layer and a second carrier transport layer on the transparent conductive substrate from bottom to top, and then performing P2 laser scribing; (2) preparing an interface buffer layer on the second carrier transport layer; and (3) depositing a metal electrode on the interface buffer layer and then carrying out P3 laser scribing. According to the regulation and control method, through preparation of a core interface buffer layer and full-flow process regulation and control, an optimized nucleation interface is provided for metal electrode densification and film formation, and the electrode deposition quality is improved; meanwhile, good energy level matching of the carrier transport layer and the metal electrode is achieved, interface ion migration and diffusion are restrained, and the problems of thin film splashing and edge curling in the laser scribing process are solved.

The invention belongs to the technical field of semiconductor material detection, and relates to a perovskite film quality management and control system integrating optical detection and data analysis, which comprises a data acquisition and preprocessing module, a dynamic reference construction module, a defect index calculation module and a defect analysis and regulation module, the method comprises the following steps: acquiring photoluminescence intensity data and reflectivity data of the surface of a perovskite thin film, performing space pixel registration and preprocessing, constructing a two-dimensional feature space, and fitting a dynamic reference light intensity curve by using a dynamic sliding window algorithm; calculating a defect severity index of each pixel point by combining a nonlinear index mapping model based on the dynamic reference light intensity curve and the actually measured photoluminescence intensity; and rendering the defect severity index into a defect distribution thermodynamic diagram, and generating a production equipment regulation and control instruction according to the defect area proportion and the distribution form. According to the method, the interference of the film thickness on the photoluminescence signal is dynamically decoupled by using a data statistics rule, and the accuracy and the production yield of perovskite film defect detection are improved.

This application relates to optoelectronic devices and their fabrication methods, as well as electrical devices and power generation devices. The optoelectronic device includes a perovskite layer comprising perovskite grains. The crystalline phases of the perovskite grains include cubic and non-cubic phases; the cubic phase accounts for more than or equal to 97% of the mass of the perovskite layer; the non-cubic phase includes at least one of tetragonal, orthorhombic, and other phases; the other phases account for less than or equal to 5% of the mass of the non-cubic phase; the tetragonal phase accounts for a higher mass of the non-cubic phase than the orthorhombic phase; and the dielectric constant of the perovskite layer is greater than or equal to 5. This optoelectronic device exhibits high energy conversion efficiency.

The preparation method mainly comprises the following steps: dissolving chloroplatinic acid, lanthanum salt and manganese salt in water according to a certain proportion, adding a complexing agent, adjusting the pH value, and carrying out gelation, drying and high-temperature calcination to obtain a perovskite precursor; and treating in a reducing atmosphere, so that platinum atoms are selectively dissolved out from crystal lattices, high-dispersion platinum nanoparticles are formed on the surface, and finally, the composite catalyst with extremely low platinum loading capacity is obtained. According to the method, platinum species are stably anchored through the perovskite carrier, the platinum atom utilization rate and catalytic stability are remarkably improved, excellent electrocatalytic activity and durability are shown in the oxygen reduction reaction, and the method can be widely applied to energy conversion equipment such as zinc-air cells and fuel cells and has important practical application value.