1685results about "From normal temperature solutions" patented technology

The present disclosure describes electrochromic devices comprising transparent conductive layer acting as an electrode, an active electrochromic film, an ion conductor, and an ion storage film at least one of which comprises at least one MXene material.

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 discloses a series of alkali metal borate compounds and alkali metal borate crystals as well as a preparation method and application thereof, and belongs to the technical field of photoelectric functional crystal materials. The chemical general formula of the series of compounds and crystals thereof is A3RE (B3O6) 2, wherein A is K, Rb, Cs or NH4; rE = Sc and Y, the molecular weight is 355.93-744.48, the series of crystals belong to a trigonal system, the space group is P321, the cell parameters a = b = 10.5237 (13)-135237 (13), and # imgabs0 # Z = 3. The series of alkali metal borate compounds are synthesized by adopting a solid-phase reaction method or a hydrothermal method, and the series of crystals grow by adopting a high-temperature melt method or a hydrothermal method or a solution method. The series of materials can be used for manufacturing second harmonic generators, upper and lower frequency converters, optical parametric oscillators, polarizing prisms and the like.

The invention discloses a method for regulating the length-diameter ratio of calcium sulfate hemihydrate whiskers prepared from ardealite, and belongs to the field of ardealite resource utilization. According to the invention, carbohydrates, alcohols and other substances containing hydroxyl groups are used as the crystal modifier, and the calcium sulfate hemihydrate whisker is prepared by regulating and controlling phosphogypsum through a normal-pressure hydrothermal method, so that the length-diameter ratio of the whisker is regulated and controlled within a certain range. The method solves the problems that the length-diameter ratio of the whisker in the calcium sulfate hemihydrate whisker product prepared from ardealite is not uniform and cannot be regulated and controlled, the preparation process is tedious, the corrosivity is strong due to excessive salt solution in the reaction system, and the waste liquid has great harm to the environment, and has a good application prospect.

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 belongs to the technical field of crystal materials, and particularly relates to a controllable growth device and method for a large-size perovskite structure iodine copper cesium single crystal. The designed growth equipment mainly comprises a growth system, a temperature control system and an anti-solvent diffusion system. The method for growing the large-size iodine-copper-cesium single crystal by adopting the temperature-control and speed-control anti-solvent diffusion method comprises the following steps: in the growth process of the iodine-copper-cesium crystal, carrying gas generated by a gas generator carries an anti-solvent into a grower through an anti-solvent device, and controlling the content of the anti-solvent entering a solution by adjusting the flow speed of the carrying gas, and further controlling the supersaturation degree of the growth liquid and carrying out crystal growth. According to the method, the crystal growth can be accurately controlled in the crystal growth process, the problems of small crystal size and poor quality of a volatilization method are solved, the problems of large corrosion, long growth period and the like of an acid solution used in a traditional cooling method are solved, and the problem of crystal cracking caused by large temperature difference and large internal stress after the growth is completed is avoided.

The invention relates to a formamidine thiosulfate second-order nonlinear optical crystal and preparation and application thereof, the chemical formula of the crystal material is [CH (NH2) 2] 2SO3S, the molecular weight is 203.27, the crystal material belongs to an orthorhombic crystal system, the space group is P212121, the unit cell parameter is # imgabs 0 # alpha = beta = gamma = 90 degrees, Z = 4, and the unit cell volume is # imgabs 1 #. Under 1064nm laser irradiation, the frequency doubling intensity of the powder is about two times that of monopotassium phosphate crystals, and phase matching can be realized. In addition, the crystal material has a wide light transmission wave band, the ultraviolet absorption cut-off edge is 253 nm, the optical band gap is 4.90 eV, and the crystal material is easy to grow. The wavelength range of the coherent light source can be expanded by using optical frequency conversion technologies such as second harmonic generation and optical parametric amplification. Therefore, the crystal material has important application value in the fields of laser frequency conversion, photoelectric information storage and the like.

The invention relates to a preparation method of a cobalt-free single crystal lithium-rich positive electrode material. The preparation method comprises the following steps: preparing a nickel-manganese oxygen-containing compound precursor from manganese salt and nickel salt by using a solid-phase method or a coprecipitation method; mixing the prepared nickel-manganese oxygen-containing compound precursor with a low-melting-point lithium source, pre-sintering and melting the mixture, performing high-energy ball milling, adding a conventional lithium source once or multiple times during ball milling, and calcining the mixture after ball milling to obtain an initial product of the cobalt-free single crystal lithium-rich positive electrode material; and carrying out acid treatment and secondary calcination on the initial product to obtain the cobalt-free single crystal lithium-rich positive electrode material product. The single crystal lithium-rich material with excellent performance can be prepared with high efficiency and low cost, and has excellent electrochemical performance.

The invention relates to the field of photoelectrocatalysis, and provides a preparation method and application of a cerium-based double-layer composite material coated with indium zinc sulfide, and the preparation method comprises the following steps: dispersing Ce (IV)-MOF in DMF and methanol, adding a hydroxyl-containing organic ligand, carrying out room temperature ultrasonic treatment to obtain modified MOF, dispersing the modified MOF in water and glycerin, adding a zinc salt and an indium salt, stirring, adding thioacetamide, stirring, filtering, washing, and drying to obtain the cerium-based double-layer composite material coated with indium zinc sulfide. And heating to obtain the product indium zinc sulfide coated cerium-based double-layer composite material. According to the invention, an ultrasonic-assisted MOF ligand exchange technology is utilized, so that an MOF regular octahedral framework structure is well maintained; the ZnIn2S4 material is compounded through in-situ growth of ZnIn2S4, the compounding synthesis temperature and a solution system are optimized, a ZnIn2S4 double-layer coating structure is obtained, and the yield and dispersity of ZnIn2S4 are improved. And the prepared ZnIn2S4 / MOF composite material has excellent reaction efficiency and stability of photoelectrocatalytic hydrogen production.

The invention provides a seed layer for preparing a preferred orientation crystal film and the crystal film, lanthanide series metal salt is selected as an initial raw material of the seed layer, the initial raw material is adopted to prepare a solution, the prepared solution is filtered to obtain a seed layer solution, the seed layer solution is subjected to spin coating or ink jet printing on a substrate, and heat treatment is performed to obtain the seed layer. According to the seed layer for preparing the preferred orientation crystal film and the preferred orientation crystal film, the high-quality single crystal film is prepared under simple and convenient conditions, and the seed layer and the preferred orientation crystal film have wide application prospects in the fields of information storage, intelligent sensing, biomedical treatment, energy and the like.

The invention relates to a black-phase all-inorganic perovskite flexible thick film stable at room temperature and a preparation method and application thereof, and the preparation method comprises the following steps: uniformly mixing PbI2, CsI and an organic ammonium salt in an organic solvent to obtain a perovskite precursor solution; filling a polymer filter membrane with the perovskite precursor solution through a vacuum filtration method to obtain a wet flexible thick membrane; the polymer filter membrane is cleaned, and the thickness is 50 microns or above; and carrying out gradient annealing on the wet flexible thick film to obtain the black-phase all-inorganic perovskite flexible thick film which is stable at room temperature. According to the invention, low-dimensional perovskite induced lattice distortion is formed by adding A-site cations, and the flexible thick film which is thermodynamically stable and uniform at room temperature is obtained based on a solvent suction filtration method by regulating and controlling the addition amount of organic ammonium salt and gradient annealing and regulating and controlling the proportion of residual organic ammonium salt of lattices, and is applied to an X-ray detector. High [mu] [tau] product and high sensitivity are realized, and good flexible detection performance is shown.

The invention belongs to the technical field of chemical synthesis, and relates to a black-phase formamidine lead iodide microcrystal as well as a preparation method and application thereof. The invention provides a preparation method of black-phase formamidine lead iodide microcrystals. The preparation method comprises the following steps: mixing a salt compound containing divalent lead, hydriodic acid, formamidine acetate, a reducing acid compound for inhibiting oxidation of iodine anions and deionized water as precursor liquid; and performing high-pressure hydrothermal treatment on the precursor liquid to obtain the black-phase formamidine lead iodide microcrystal. According to the preparation method provided by the invention, water is adopted as a solvent, so that the use of an organic solvent is avoided, and the prepared black-phase formamidine lead iodide microcrystal has high crystallinity and stability and can be stored in a room-temperature air condition for a long time without phase change.

The invention relates to the technical field of luminescent materials, in particular to a zero-dimensional organic-inorganic manganese-based halide scintillating material and a preparation method and application thereof.The preparation method comprises the following steps that manganese bromide and diisopropyl ammonium bromide are mixed and then dissolved in a mixed solvent, heating and stirring are conducted, and a precursor solution is obtained; heating after filtering, preserving heat at 60-100 DEG C, and crystallizing to separate out yellow crystals; and washing the yellow crystal with isopropanol, carrying out suction filtration, and drying to obtain the zero-dimensional organic-inorganic manganese-based halide scintillating material. According to the zero-dimensional organic-inorganic manganese-based halide scintillation material and the preparation method and application thereof, the obtained scintillation material emits bright green light under X-ray excitation, the detection limit is far lower than the standard dosage of X-ray diagnosis, and the zero-dimensional organic-inorganic manganese-based halide scintillation material has wide application prospects in the fields of high-energy physics, security inspection, medical detection and the like.

The invention discloses a preparation method of calcite type calcium carbonate whiskers, which comprises the following steps: (1) preparing a calcium hydroxide suspension, and heating the calcium hydroxide suspension to obtain a hot calcium hydroxide suspension for later use; (2) adding a seed crystal and a crystal form control agent into the hot calcium hydroxide suspension, and uniformly stirring to obtain a hot mixed suspension; (3) continuously introducing carbon dioxide into the hot mixed suspension liquid for reaction until the reaction is finished, stopping introducing the carbon dioxide to obtain a calcium carbonate suspension liquid, filtering and drying to obtain calcium carbonate powder; and (4) calcining the calcium carbonate powder in a furnace, and crushing to obtain the calcite type calcium carbonate whisker. The calcium carbonate whisker prepared by the method is calcite type, and a new research thought is provided for preparation of the calcite type calcium carbonate whisker; the calcite calcium carbonate whisker prepared by the method is the most stable phase of calcium carbonate, and the application field of the calcium carbonate whisker is expanded.

The invention belongs to the technical field of high-nickel ternary precursors, and relates to a preparation method of a high-performance single-crystal porous large-core NCM high-nickel ternary precursor. The method comprises the following steps: firstly, precisely filtering a metal salt mixed solution, a complexing agent solution and a precipitant solution; and then by utilizing the mixing form and strength of the feed liquid in different flow fields and the growth characteristics of the particles in different atmospheres, accurate control of particle nucleation and growth is realized, so that the material grows into the high-nickel ternary precursor material with single-crystal morphology and porous large-core structural characteristics. The single-crystal porous large-core NCM high-nickel precursor prepared by the method has the advantages of excellent morphology, clear crystal form, high crystallinity, high pore volume, high specific capacity, good cycle stability and thermal stability.

Disclosed in the present invention is a method for in-situ NH4I-assisted preparation of CsPbI3 colloidal nanoplateles, comprising the following steps: S1. respectively preparing a lead iodide precursor solution, an ammonium iodide precursor solution, and a cesium oleate precursor solution; and S2. mixing the lead iodide precursor solution with the ammonium iodide precursor solution under stirring, adding the cesium oleate precursor solution for reaction to obtain a nanoplatele stock solution, and purifying and separating the nanoplatele stock solution to obtain CsPbI3 nanoplateles. In the present invention, in the method for the in-situ NH4I-assisted preparation of CsPbI3 colloidal nanoplateles, NH4I is used for in-situ replication synthesis of the CsPbI3 nanoplateles, the regulation of the growth kinetics of a system is achieved, the reaction process is more controllable, and the synthesized nanoplateles have a narrower peak width at half height, and a more uniform phase distribution, meeting requirements of light emitting in a red light range.

The invention relates to the technical field of lithium battery positive electrode material preparation, in particular to large single crystal iron phosphate adaptive to high compaction type lithium iron phosphate and a preparation method thereof.The preparation method comprises the following steps that S1, after chemical fertilizer acid is diluted, an impurity removing agent and a flocculating agent are added, and filtering is conducted to obtain a purified chemical fertilizer acid solution; compounding the purified chemical fertilizer acid solution with phosphoric acid to obtain an iron dissolving solution, wherein the mass concentration of phosphoric acid in the iron dissolving solution is 10-45%; s2, adding an iron source into the iron dissolving solution, heating, dissolving and filtering to obtain a ferrophosphorus solution; s3, adding an oxidizing agent I into the ferrophosphorus solution at a certain temperature, and carrying out an oxidation reaction to obtain a reaction solution; s4, adding an oxidizing agent II into the reaction solution, and carrying out heat preservation and aging at a certain temperature to obtain an aged solution; and S5, filtering, washing, drying and calcining the aging solution to obtain the large single crystal iron phosphate. The problems of low production efficiency, high energy consumption, large equipment investment, large environmental pollution and high post-treatment cost of the existing iron phosphate adaptive to high-compaction lithium iron phosphate can be solved.

The invention relates to an aminoguanidine oxalate second-order nonlinear optical crystal material and preparation and application thereof, the chemical formula of the crystal material is (CN4H7) + (C2O4H)-, the crystal material belongs to a monoclinic system, the space group is P21, the cell parameters are # imgabs0 # and # imgabs1 #, alpha is equal to 90 degrees, beta is equal to 95-100 degrees, gamma is equal to 90 degrees, and Z is equal to 2. The powder frequency-doubled effect of the nonlinear optical crystal (CN4H7) + (C2O4H)-disclosed by the invention under the irradiation of 1064nm laser is about 1.0 time of that of a KH2PO4 (KDP) crystal, and phase matching can be realized. In addition, the crystal material has the advantages of being short in ultraviolet absorption cut-off edge (290 nm), easy to grow and the like, and has important application value in the photoelectric conversion fields of stereolithography, solid-state lasers, optical communication, optical parametric amplifiers, optical parametric oscillators, laser frequency converters and the like.

The invention discloses a method for regulating and controlling the size of a cobalt-free single crystal lithium-rich manganese-based positive electrode material, which comprises the following steps of: firstly, preparing a cobalt-free lithium-rich positive electrode material precursor from manganese salt and nickel salt by adopting a solid phase method or a coprecipitation method, then uniformly mixing the cobalt-free lithium-rich positive electrode material precursor, a lithium source and mixed salt of chloride salt and fluoride salt, and then preparing the cobalt-free single crystal lithium-rich manganese-based positive electrode material. The preparation method comprises the following steps: carrying out primary calcination at the temperature of 280-550 DEG C, then carrying out secondary calcination at the temperature of 600-800 DEG C, further heating, and then carrying out tertiary calcination at the temperature of 900-1100 DEG C, so as to obtain the cobalt-free single crystal lithium-rich manganese-based positive electrode material after the calcination is finished. The method provided by the invention realizes regulation and control of the size of the cobalt-free single crystal lithium-rich manganese-based positive electrode material; therefore, the cobalt-free single crystal lithium-rich manganese-based positive electrode material with high specific capacity and cycle performance is obtained.

The invention belongs to the technical field of X-ray detection, and particularly relates to lead-free two-dimensional double perovskite, a preparation method of the lead-free two-dimensional double perovskite and an X-ray detector manufactured based on the perovskite. The lead-free two-dimensional double perovskite is applied to X-ray detection. According to the preparation method, histamine dihydrochloride (C5H11Cl2N3Cl), silver chloride (AgCl) and bismuth trioxide (Bi2O3) are mainly used as raw materials, a mixed solution of hydrobromic acid (HBr) and hypophosphorous acid (H2PO2) is used as a solvent, a single crystal material ((C5H9N3) 2AgBiBr8 single crystal) is prepared through a hydrothermal method, and the two sides of the single crystal are coated with silver paste to serve as electrodes, so that the direct type X-ray detector is obtained. The preparation method disclosed by the invention has the characteristics of simplicity, easiness in operation, low requirement on equipment, low cost, low energy consumption and suitability for expanded production.

The invention relates to a preparation method and application of a 2D / 2D heterostructure wave-absorbing material based on solvent regulation and control growth, and belongs to the technical field of preparation of wave-absorbing materials. The preparation method comprises the following steps: constructing 2D tabular Bi4NbO8Cl which mainly exposes {001} and {110} high-activity crystal faces through a crystal face engineering technology, and further performing in-situ growth of a 2D ZnIn2S4 nanosheet on the surface of Bi4NbO8Cl, thereby obtaining the ZnIn2S4 / Bi4NbO8Cl composite wave-absorbing material. Under MW driving, the material shows ultrahigh catalytic degradation activity on OTC, and has potential application prospects in the aspect of purification of environmental water bodies polluted by antibiotics.

The invention provides a high-chirality one-dimensional perovskite single crystal and a preparation method thereof, and the preparation method comprises the following steps: 1, using lead oxide, hydriodic acid, hypophosphorous acid and (R)-1-(1-naphthyl) ethylamine to prepare a white precipitate in a glass bottle; 2, heating the glass bottle, and continuously stirring the liquid containing the white precipitate by using magnetons; and 3, cooling the glass bottle to obtain the single crystal. According to the preparation method of the high-chirality one-dimensional perovskite single crystal, provided by the invention, a material (R)-1-(1-naphthyl) ethylamine with ultrahigh chirality is selected as positive ions of perovskite, so that the grown perovskite single crystal also has ultrahigh chirality; the pure one-dimensional chiral perovskite single crystal which is yellow is obtained by adjusting the ratio of lead oxide to (R)-1-(1-naphthyl) ethylamine; and the obtained single crystal has a flat surface, the size can be as long as 6mm, and the application field of the single crystal is widened.

The invention relates to a trimethylamine methanesulfonate second-order nonlinear optical crystal material and preparation and application thereof, the chemical formula of the crystal material is [(CH3) 3NH] < + > [SO3CH3] <->, the molecular weight is 154.21, the crystal material belongs to an orthorhombic crystal system, and the space group is Pca21 (No.29). According to the present invention, the powder frequency doubling effect of the nonlinear optical crystal [(CH3) 3NH] + [SO3CH3]-under 1064nm laser irradiation is about 0.5 time of the powder frequency doubling effect of the nonlinear optical crystal [(CH3) 3NH] + [SO3CH3]-under 1064nm laser irradiation, phase matching can be achieved, and the ultraviolet absorption cutoff edge is less than 200nm. The crystal material is easy to grow and shows important application value in the aspects of electro-optical modulation, holographic storage elements, frequency doubling devices and the like.

The invention discloses a low-dimensional organic-alkali metal-copper (I) halide supramolecular scintillator based on crown ether assisted self-assembly, a synthesis method thereof and application of the low-dimensional organic-alkali metal-copper (I) halide supramolecular scintillator in single crystal X-ray imaging. A series of supramolecular scintillators are successfully synthesized by adopting a supramolecular coordination strategy of crown ether (L) and alkali metal ions (M) and a saturated solution volatilization method. By optimizing the crown ether coordination mode, controllable preparation of large-size single crystals is achieved, the optical and X-ray imaging performance of the large-size single crystals is improved, a new thought is provided for research and development of novel high-performance X-ray scintillators, and the application potential of the supramolecular scintillators in the field of high-resolution single crystal X-ray imaging is expanded.

The invention discloses preparation and application of a millimeter-scale high-uniformity bastnaesite single crystal electron probe standard sample, and the preparation method comprises the following steps: taking CeF3 and carbonate as raw materials, carrying out solid phase mixing, carrying out a hydrothermal reaction at 400-500 DEG C under water self-generated saturated vapor pressure, and carrying out programmed cooling, washing and drying to obtain a CeCO3F single crystal which has a millimeter-scale size and does not contain Nd and other rare earth impurities. The spectrum peak overlapping interference in EPMA analysis is eliminated from the source, the internal elements are highly uniformly distributed, and the relative standard deviation (RSD) of the distribution of the key element Ce is less than 1.0%. The method is simple in process, low in cost and mild in condition, the limitation that millimeter-level single crystals are difficult to prepare through a traditional method is broken through, and the obtained single crystal standard sample has the advantages of being high in crystallinity, good in stability, high in matching degree with a natural geological sample matrix and the like, is suitable for electron probe analysis, especially high-precision quantitative analysis of rare earth element Ce and has good application prospects. And the accuracy and reliability of an analysis result can be effectively improved.

A method of producing crystalline cellulose from a cellulosic material includes the step of reacting the cellulosic material in an aqueous slurry comprising a transition metal catalyst and a hypohalite solution.

A method for recycling valuable metal in a lithium battery positive plate is provided, comprising the following steps: S1, mixing a positive plate material with reducing metal, and then roasting, the roasting being carried out in a protective atmosphere; S2, performing magnetic separation on the material obtained in step S1 to obtain a magnetic component and a non-magnetic component; S3, performing acid dissolution on the magnetic component, concentrating the obtained leaching solution, and then performing cooling crystallization to obtain a metal salt A; and S4, performing water soaking on the non-magnetic component to obtain sediment and water soaking liquid, adding carbonate into the water soaking liquid to obtain lithium carbonate, performing acid dissolution on the sediment, purifying, and performing evaporative crystallization to obtain a dissolved solution to obtain a metal salt B.

The invention discloses a method for preparing high aspect ratio calcium carbonate whiskers by carbon fixation in steel smelting slag leachate, belonging to the technical field of solid waste resource utilization. The method comprises the following steps: leaching steel smelting slag to obtain calcium-magnesium leachate and leach slag; removing impurities from the calcium-magnesium leachate by a pH swing method to obtain a calcium-magnesium purified solution; capturing the gas containing carbon dioxide by an alkaline solution to obtain a carbonated solution; adjusting the pH of the calcium-magnesium purified solution to convert magnesium ions into magnesium hydroxide, placing the solution in an ultrasonic field, adding the carbonated solution to carry out a carbon fixation reaction, and washing and drying the precipitate obtained by the reaction to obtain calcium carbonate whiskers. The method not only successfully realizes the efficient resource utilization of two wastes, steel smelting slag and carbon dioxide flue gas, but also produces high value-added calcium carbonate whisker products while stably fixing carbon dioxide, and has broad application prospects and environmental value.

The invention discloses a method for preparing a perovskite single crystal by using a general solvent system, and relates to the field of photoelectric materials. The general solvent system is composed of gamma-butyrolactone and polyethylene glycol and can be used for preparing perovskite single crystals with various components. The method for preparing the perovskite single crystal by using the solvent system comprises the following steps: preparing a perovskite precursor solution; heating the perovskite precursor solution; and taking out the single crystal from the solution, cleaning and drying. The method is simple and convenient to operate, and can be used for preparing large-size single crystals and preparing small-size single crystals on a large scale.

The invention discloses a two-dimensional perovskite single crystal, slurry, a preparation method of the two-dimensional perovskite single crystal and application of the two-dimensional perovskite single crystal and the slurry in an integrated X-ray detector, and belongs to the technical field of X-ray detection. A two-dimensional perovskite single crystal and slurry are successfully prepared through a simple preparation process, the chemical structural formula of the two-dimensional perovskite single crystal is [M (O3S-(CH2) 2-NH3) 2] PbX4, M is Cu, Zn, Ni, Co or Cd, and X is Cl or Br, meanwhile, integration of a two-dimensional perovskite active material and a functional array panel is realized, and the two-dimensional perovskite single crystal with high sensitivity, high sensitivity, high sensitivity, high sensitivity, high sensitivity, high sensitivity, high sensitivity and high stability is successfully prepared. The integrated X-ray detector is excellent in imaging quality and stable in work. The detector is low in preparation cost and can be used in the fields of industrial flaw detection and the like.