95 results about "Anti solvent" patented technology

The invention relates to the technical field of perovskite quantum dots, in particular to a method for preparing perovskite quantum dots through a normal-temperature solution reaction method. The preparation method comprises the following steps: dissolving a first ligand and a cation precursor in a first solvent, and then diluting with a second solvent to prepare a cation-ligand solution; dissolving a second ligand and lead salt in a first solvent, and then diluting by using a second solvent to prepare a lead salt-ligand solution; and mixing the lead salt-ligand solution with a second solvent, adding the cation-ligand solution under the condition of violent stirring to obtain a reaction system, and then reacting under the condition of normal temperature to obtain the perovskite quantum dots. The perovskite quantum dots can be prepared through a solution reaction method under a normal temperature condition, harsh conditions of a hot injection method and use of a large amount of an anti-solvent of a ligand-assisted precipitation method are avoided, rapid cooling from a high temperature is not needed, the quantum dots can be synthesized without using the anti-solvent, and the preparation method is simple and convenient. The defect that large-scale and large-batch production of the perovskite quantum dots is difficult to realize by the existing synthesis method can be overcome.

The invention relates to the technical field of fractionation of lignocellulose biomass, and discloses a method for fractionating lignocellulose biomass by using a eutectic solvent, which comprises the following steps: mixing betaine and malic acid, stirring, and cooling to room temperature after the reaction is finished to obtain a clear and transparent eutectic solvent; the method comprises the following steps: mixing crushed lignocellulose biomass with a deep-eutectic solvent, and putting the mixture into a high-pressure reaction kettle; acetone and n-butyl alcohol are mixed according to the volume ratio of 3: 2-4: 1, and an anti-solvent is prepared; the method comprises the following steps: slowly adding an anti-solvent into a mixture of the lignocellulose biomass and the eutectic solvent, carrying out ultrasonic treatment, and then carrying out suction filtration. The glass electrode pH meter is used for measuring the pH value of the recovered deep-eutectic solvent, and the newly prepared deep-eutectic solvent is added according to the pH value, so that the stability of the solvent performance can be effectively maintained, the deep-eutectic solvent always keeps a good fractionation effect in multiple times of recycling, the utilization rate of the solvent is greatly improved, and the production cost is reduced.

The invention relates to the technical field of preparation of barium sulfate powder, and discloses a preparation process of aluminum hydroxide modified barium sulfate powder, which comprises the following steps: constructing high-density sulfate radical active sites through argon plasma activation, and combining with a bio-based coupling agent to realize triple chemical bonding of barium sulfate and aluminum hydroxide; dynamically controlling hydrolysis of the aluminum salt by adopting microwave pulse in cooperation with a spiral microreactor to generate a nanoscale aluminum hydroxide uniform coating layer; supercritical CO2 is introduced to synchronously regulate and control the pH and the anti-solvent effect, side reaction is inhibited, and coating compactness is optimized; a closed-loop aluminum salt recovery system is combined to realize resource cyclic utilization; finally, the application performance of the powder is improved through hydrophobic treatment of magnesium stearate. Compared with a traditional acid pickling activation and continuous heating process, the chemical pollution risk is avoided, the bonding strength of a coating layer is improved by 60% or above, the utilization rate of aluminum salt reaches 98%, and the powder hydrophobicity and the plastic processing adaptability are remarkably optimized.

A star-like micromolecular cross-linked hole transport material, and a preparation method therefor and the use thereof. Vinyl is introduced into a star-like micromolecular compound to make same be able to undergo a polymerization reaction so as to form a three-dimensional cross-linked network polymer having good stability and solvent resistance; therefore, the problem of deterioration in hole transport performance caused by a micromolecular hole transport material being prone to crystallization is solved, the problem of interlayer mutual dissolution during the process of preparing a photoelectric device by means of a solution method is also effectively solved, the selections of a luminescent layer material and a solvent are more diversified, and a device has better stability. The star-like micromolecular cross-linked hole transport material has a proper HOMO energy level, relatively high hole mobility and a relatively high triplet state energy level, and has good prospects in photoelectric devices, especially in organic photoluminescent devices.

The invention relates to the technical field of dendrobium officinale processing, and particularly discloses a method for realizing high value-added conversion of dendrobium officinale alkaloid based on efficient extraction. The method for realizing high value-added conversion of dendrobium officinale alkaloid based on efficient extraction comprises the following steps: S1, pretreatment and activation of raw materials: crushing dried dendrobium officinale stalks to 60-100 meshes to obtain dendrobium powder; mixing the dendrobium nobile powder with an activating agent aqueous solution to obtain activated wet dendrobium nobile powder; s2, deep eutectic solvent synergistic microwave extraction; s3, precipitation and enrichment of an anti-solvent; s4, cleaning and drying the precipitate; s5, preparing alkaloid nanoparticles; and S6, preparing the functional health-care product preparation. As a functional dietary supplement, the dendrobium officinale alkaloid solid beverage tablet or capsule provided by the invention can be used for daily health care, and has the advantages of high bioavailability, strong intestinal synergistic regulation function and good physical stability.

A method for making a wide bandgap perovskite includes: preparing a solvent (102) by mixing 4 volumes of DMF and 1 volume of DMSO; preparing a first solution (104) of AM Cs0.3FA0.7Pb(I(1-y)Bry)3 with the solvent; preparing a second solution (106) of AM IH3NCH2CH2NH3PbI3 with the solvent; preparing a third solution (108) of AM MAPbCl3 with the solvent; preparing a fourth solution (110) with 0.97∗(100-B) vol% of the first solution, 0.97*B vol% of the second solution and 3 vol% of the third solution, wherein 2 ≤ B ≤ 22; depositing a film (112) of the fourth solution on a substrate with an anti-solvent; annealing the deposited film (114) in inert atmosphere at temperature below 110°C to obtain the wide bandgap perovskite.

The invention discloses a preparation method of an anti-solvent extrusion granulation aluminum adsorbent. The preparation method comprises the following steps: preparing aluminum adsorbent precursor powder; dissolving an organic polymer in an organic solvent to form a polymer solution; dissolving the aluminum adsorbent precursor powder in the polymer solution to form slurry; and dripping the slurry into a flowing inorganic solvent so as to form the aluminum-based adsorbent particles through curing. The method has the advantages of simple preparation process, high adsorption capacity, high adsorption rate, stability, reliability, reusability and the like, can be directly used for extracting Li < + > from original brine in the technical field of lithium extraction from liquid-phase salt lakes, and has very high practical application value and popularization value.

This application discloses a method for preparing ultra-high purity citric acid monohydrate based on supercritical CO2, belonging to the field of citric acid preparation technology. The method includes the following steps: dissolving citric acid monohydrate in an organic solvent to prepare a citric acid solution; spraying the citric acid solution into a supercritical CO2 environment to crystallize the citric acid using the supercritical anti-solvent effect; performing dynamic washing with pure supercritical CO2; and obtaining ultra-high purity citric acid monohydrate crystals after depressurization and drying. The citric acid monohydrate product prepared by this method has high purity, high light transmittance, low total metal ion content, controllable crystal habit, and low organic solvent residue, meeting the stringent requirements of high-end applications such as electronic and pharmaceutical grades.

The application provides a bidentate phosphite polymer, a preparation method and application thereof, and a method for olefin carbonyl synthesis reaction. The bidentate phosphite polymer provided by the application is shown in formula (I) and is copolymerized by a specific bidentate phosphite ligand and 2-vinyl naphthalene. The bidentate phosphite polymer can be used in catalyzing the olefin carbonyl synthesis reaction, can not only ensure the catalytic performance of the olefin carbonyl synthesis reaction, but also can improve the solvent swelling resistance of the polymer, thereby being beneficial to ensuring the catalyst form stability and being beneficial to the stable production of aldehydes synthesized by the olefin carbonyl synthesis.

The invention provides a preparation method of crystal-free pomegranate-shaped nanocellulose, which comprises the following steps: dissolving cellulose in a specific solvent to form a cellulose solution with the concentration of 0.001-15wt%, then adding a hydrophobic modifier into the cellulose solution, carrying out hydrophobic modification on the cellulose in the dissolved state to obtain a hydrophobic cellulose solution, and then adding the hydrophobic modifier into the hydrophobic cellulose solution to obtain the crystal-free pomegranate-shaped nanocellulose. Mixing and diffusing the hydrophobic cellulose solution and an anti-solvent to enable the hydrophobic cellulose to be self-assembled through Van der Waals force to form primary particles, reassembling the primary particles due to high surface energy to form amorphous pomegranate-shaped nano-cellulose, obtaining suspension of the amorphous pomegranate-shaped nano-cellulose, and finally completely removing the specific solvent and the hydrophobic modifier to obtain the amorphous pomegranate-shaped nano-cellulose. And drying to obtain the crystal-free pomegranate-shaped nano cellulose. According to the invention, dissolution, hydrophobic modification and regeneration of cellulose are innovatively combined for the first time, and the crystal-free pomegranate-shaped nano cellulose with a novel bionic pomegranate-shaped structure is prepared.

The invention belongs to the technical field of functional food and active substance delivery, and relates to EGCG (epigallocatechin gallate) loaded protein-polysaccharide ternary composite nanoparticles and a preparation method thereof. Zein is used as carrier protein, Arabic gum is used as stable polysaccharide, and an anti-solvent precipitation method is combined with ultrasonic treatment to prepare the composite nanoparticles. The preparation method specifically comprises the following steps: dissolving zein in an ethanol water solution to form an organic phase, dissolving Arabic gum in a water phase, adding the water phase into the organic phase under a stirring condition, removing ethanol to obtain a zein-Arabic gum binary composite nanoparticle dispersion liquid, introducing EGCG, and carrying out ultrasonic-assisted loading and drying to obtain a target product. The encapsulation efficiency of the active substance is improved through the ultrasonic-anti-solvent synergistic effect, the thermal stability and storage stability of the system are improved, and the method is simple, good in repeatability and suitable for delivery of food-grade active ingredients.

The invention is suitable for the technical field of intelligent testing, and provides an automatic testing method and system based on a water-alcohol-resistant solution, and the method comprises the steps: firstly responding to a water-alcohol-resistant solution test completion instruction, and obtaining first real-time index information and second real-time index information of a to-be-detected textile sample in real time; and according to the first real-time index information and the second real-time index information, water-alcohol-resistant effect evaluation information is effectively generated. According to the application, the water-alcohol solution resistance of various different fabrics can be accurately tested, so that the performance of the fabrics in contact with water and alcohol can be deeply known, a scientific basis can be provided for design and improvement of textiles and related products, experimental errors can be greatly reduced, and the experimental efficiency is improved. The stability and repeatability of test data are ensured, the optimization of the anti-solvent performance of the fabric is promoted, and the requirements of the market on high-quality durable textiles are met.

The application discloses a kind of preparation methods of lead-free environmental protection Cs2TiBr6 double perovskite film, it includes the following steps: CsBr powder and TiBr4 Powder are added to beaker equipped with gamma-butyrolactone solvent and magnetically stirred to be completely dissolved, then slowly add anhydrous acetonitrile as anti-solvent and constant temperature heating is placed on heating table, after seed microcrystal precipitates, pour out solution, use acetone to flush seed microcrystal after, and dry after standing;Seed microcrystal, CsBr powder and TiBr4 Powder are added to N, N-dimethylformamide solvent, and be loaded into centrifugal tube and centrifuged, pour out supernatant after centrifugation and the precipitate is dried, obtain Cs2TiBr6 microcrystal;Cs2TiBr6 microcrystal is added to the mixed solution of cyclohexane and isopropyl alcohol with certain mass ratio, and magnetically stirred to make microcrystal fully dispersed, obtain Cs2TiBr6 precursor solution;Cs2TiBr6 precursor solution is added dropwise to substrate and spin-coated, then the substrate is placed on heating table and annealed, to obtain Cs2TiBr6 film.The advantages are that, compared with existing film preparation technology, 1) no need of thermal evaporation coating machine and double source co-evaporation process, low cost and simple process;2) will not corrode substrate material;3) the thickness of prepared Cs2TiBr6 film is 8-10 μm, suitable for use in optoelectronic devices.

The application belongs to the field of organic photoelectric functional materials and devices, and particularly relates to a low-temperature cross-linking hole transport material and a synthesis method and application thereof. Two low-temperature cross-linking hole transport materials are successfully prepared by taking 9H-carbazole and 2,7-dibromo-9-butyl-9H-carbazole or 3,6-dibromo-9-butyl-9H-carbazole as raw materials. The two cross-linking hole transport materials have good thermal stability and solvent resistance and low cross-linking temperature. The two materials are applied to a QLED device hole transport layer, which significantly improves the current injection imbalance problem, improves the QLED efficiency, protects the original high charge transport performance of the hole injection layer, and promotes the rapid injection of holes.

To provide functionalized polyimides having high Tg and low viscosity, and having reduced levels of byproducts, including residual solvent and monomer.SOLUTION: There is provided a polyimide composition, comprising a functionalized polyimide prepared from a substituted or unsubstituted C4-40 bisanhydride; a substituted or unsubstituted C1-40 organic diamine; and optionally an organic compound comprising at least two functional groups per molecule, wherein a first functional group is reactive with an anhydride group, an amine group, or a combination thereof, and the first functional group is different from a second functional group, wherein the functionalized polyimide comprises a reactive end group, wherein the functionalized polyimide has a total reactive end group concentration of 50 to 1,500 μeq / g of the functionalized polyimide, and wherein the polyimide composition has 0.05 to 1,000 ppm of residual organic diamine, wherein the functionalized polyimide is obtained by precipitation from a solution using an organic anti-solvent or by devolatilization.SELECTED DRAWING: None

The invention is suitable for the technical field of perovskite solar cells, and provides an anti-solvent-resistant trans-perovskite solar cell and a preparation method thereof. The green anti-solvent dimethyl carbonate is used for replacing the traditional high-toxicity chlorobenzene anti-solvent, so that the problem of environmental pollution in the preparation process of the perovskite solar cell is solved. The prepared perovskite thin film is larger in grain size, higher in crystallization quality, fewer in defect and higher in flatness and density, most leakage current loss is reduced, energy loss caused by non-radiative recombination is restrained, and the current density of the perovskite solar cell is greatly improved. According to the perovskite solar cell, the carrier transmission problem is improved, carrier recombination between perovskite and the electron transmission layer is inhibited, and therefore the open-circuit voltage, the filling factor, the power conversion efficiency, the stability and the like of the perovskite solar cell are greatly improved.

The invention discloses a matrine and tetrahydropalmatine nanocrystalline soluble microneedle patch carrying preparation for analgesia and anti-inflammation of dogs and a process thereof, and relates to microneedles and drug nanocrystals. The composite microneedle provided by the invention comprises a microneedle-shaped matrix, wherein matrine and tetrahydropalmatine nanocrystals are loaded in the matrix; the matrix is a mixture of polyvinylpyrrolidone and polyvinyl alcohol; the matrine and tetrahydropalmatine nanocrystals are prepared through an anti-solvent precipitation method and spray drying, a stabilizer used in the method is polyvinylpyrrolidone, and an excipient is mannitol. Under the conditions of no pain and no proficiency, percutaneous transmission of sophocarpidine and tetrahydropalmatine nanocrystals can be effectively carried out, the dried PVA and PVP-K30 enable the composite microneedle to have enough strength and swelling property, and the prepared microneedle can effectively penetrate through the skin cuticle.

The invention discloses a lutein ester purification method, and belongs to the technical field of lutein ester purification, the purification method comprises the following steps: S1, lutein ester is roughly dissolved in an organic solvent to prepare a crude product solution; s2, loading the crude product solution to a chromatographic column containing a composite adsorbent, carrying out gradient elution, and collecting an eluent; s3, concentrating the eluent to obtain concentrated slurry, adding an anti-solvent for crystallization, filtering, washing and drying; the composite adsorbent in the step S2 is composed of silica gel and macroporous adsorption resin; in the step S2, gradient elution is performed by sequentially adopting a first eluent and a second eluent, and the first eluent is petroleum ether and ethyl acetate in a volume ratio of (10-20): 1; the second eluent is petroleum ether and ethyl acetate in a volume ratio of (2-5): 1. The purity of the lutein ester is finally improved to 99% or above, and the yield is up to 85% or above.

This invention discloses a bismaleimide-modified polyaryletherketone (PAK) composition, its preparation method, and its applications, belonging to the technical field of polymer materials and high-temperature insulating coatings. The composition comprises a PAK polymer, a bismaleimide crosslinking agent, and a free radical catalyst. The PAK polymer backbone or side chains contain cyano functional groups that participate in the crosslinking reaction, and the bismaleimide crosslinking agent contains active maleimide functional groups, which react with the cyano groups of the PAK polymer backbone to form a slightly crosslinked network structure. The novel slightly crosslinked network polymer film prepared by this invention exhibits strong solvent resistance, excellent material processing properties, and superior insulation properties at high temperatures.

The embodiment of the application relates to a method for preparing perovskite quantum dots assisted by supercritical carbon dioxide, and belongs to the technical field of perovskite quantum dots. The method solves the problems of complex process of hot injection method, large amount of anti-solvent required by ligand assisted precipitation method and difficult size control. The specific steps include: 1) dissolving lead halide and ligand 1 in polar solvent 1 to form precursor solution A; 2) dissolving cesium halide and ligand 2 in polar solvent 2 to form solution B; 3) premixing solution A and supercritical carbon dioxide to be homogeneous; 4) adding anti-solvent 3 into the reaction kettle and introducing the homogeneous phase of solution A and supercritical carbon dioxide; 5) rapidly injecting solution B for reaction, and releasing pressure after crystal nucleation and growth; 6) collecting and purifying the product. The method is green and efficient, and the prepared perovskite quantum dots are suitable for the fields of optoelectronic devices, display and lighting, etc.

The present application provides a polymer containing a triazole structure, a preparation method thereof, and a light-emitting device. The polymer containing a triazole structure is a cross-linked polymer containing a triazole structure. The polymer containing a triazole structure has good solvent resistance and thermal stability. The polymer containing a triazole structure is applied to a light-emitting device, so that a film layer in the light-emitting device has good thermal stability and solvent resistance, and when the light-emitting device is prepared by solution processing, the film layer is prevented from being affected by the next film layer, thereby improving the performance of the light-emitting device.

The triacetyl andrographolide nanocrystal is mainly composed of triacetyl andrographolide, a stabilizer and an excipient, and an average particle size of drug particles in a triacetyl andrographolide nanocrystal suspension obtained by redissolving the triacetyl andrographolide nanocrystal in water, is less than 500 nm, and a PDI is less than 0.2. The nanocrystal suspension is prepared from the triacetyl andrographolide and the stabilizer by a high-speed shear anti-solvent method in combination with a high-pressure homogenization method, then the excipient is added, and the nanocrystal is prepared through spray-drying.

The invention provides a crosslinkable polymer and application thereof, the crosslinkable polymer has a structure as shown in formula I. Through the structural design of a polymer skeleton constructed by aromatic rings with a specific structure, number and connection mode, the crosslinkable polymer has a proper HOMO energy level, high hole mobility and high triplet state energy level, and the molecular weight of the crosslinkable polymer is increased. As a hole transport material, the compound can significantly improve the luminous efficiency and the working life of an organic electroluminescent device, and reduce the voltage. The cross-linkable polymer can meet the requirements of a solution processing method, secondary cross-linking reaction can occur after film forming, a polymer film subjected to secondary cross-linking forms a three-dimensional network structure, the solubility is reduced, excellent hole transport performance is maintained, meanwhile, high solvent resistance is achieved, various solvent requirements of a next functional layer can be met, and the cross-linkable polymer can be widely applied to the field of organic light emitting devices. Therefore, the problem of mutual dissolution between the hole transport layer and the adjacent layer is solved, and the device is endowed with more excellent comprehensive performance.

The invention relates to the technical field of inorganic salt purification, and discloses high-purity ammonium sulfate and a preparation process thereof.The preparation process includes the following steps that firstly, a magnetic response macrocyclic ether complexing agent is added into an ammonium sulfate solution to be purified, the complexing agent can specifically capture impurities such as potassium ions, and a stable complex with magnetic responsiveness is formed; then, selectively crystallizing and separating out the target product ammonium sulfate under a mild condition by a gas-phase anti-solvent crystallization method, and meanwhile, effectively repelling a large-volume impurity complex into a mother solution. The key step is that obtained solid-liquid mixed crystal mush is introduced into a gradient magnetic field for enhanced separation. Through creative integration of molecular recognition, phase equilibrium engineering and a magnetochemical separation technology, the limitation of a co-crystallization effect is fundamentally broken through, and ultra-high-purity ammonium sulfate with extremely low impurity content can be prepared in an efficient and environment-friendly manner.

The application belongs to the technical field of perovskite quantum dot preparation, and particularly relates to a method for preparing perovskite quantum dots by using nano transient precipitation. The method comprises the following steps: dispersing A-site cation halide, B-site metal ion halide and a ligand of ABX3 type perovskite quantum dots in a polar solvent to obtain a precursor solution; and mixing the precursor solution and a non-polar anti-solvent by jet flow mixing to induce turbulent mixing, and obtaining the perovskite quantum dots after stopping. The preparation method provided by the application can be carried out at normal temperature and pressure, without the need for high-temperature heating and inert atmosphere protection, thereby avoiding the harsh reaction conditions of the hot injection method, and greatly reducing the process complexity and energy consumption cost. The jet flow mixing technology is used to realize efficient mixing in milliseconds, and the mixing time is shortened by 2-3 orders of magnitude compared with the traditional method, so that the transient uniform supersaturation of the precursor is ensured, thereby obtaining perovskite quantum dot products with narrow particle size distribution and excellent optical performance.

The invention discloses a circular polarization organic laser material and a preparation method and application thereof, and the preparation method of the circular polarization organic laser material comprises the following steps: taking chiral amine, rare earth chloride and hydrochloric acid as raw materials, placing the raw materials in a solvent, and heating for reaction to obtain a precursor solution; after drying the precursor solution, dissolving again to obtain a transparent solution; and putting the open container filled with the transparent solution into a closed container filled with an anti-solvent, and growing the zero-dimensional perovskite structure luminescent material A4BX7 single crystal by utilizing the diffusion of the anti-solvent. The chiral ligand is introduced into the hybrid perovskite, a chiral environment is successfully introduced into an inorganic perovskite system, chiral transfer is realized, and the prepared circular polarization organic laser material has good circular polarization organic laser properties and high fluorescence quantum yield.

The invention relates to the technical field of nylon 66 salt preparation, and provides a nylon 66 salt preparation method based on a microchannel reactor, which comprises the following steps: preparing an adipic acid suspension and a hexamethylenediamine solution, and heating the adipic acid suspension and the hexamethylenediamine solution to 50 DEG C; introducing the nylon 66 salt solution and the nylon 66 salt solution into a micro-channel reactor for neutralization reaction to obtain a nylon 66 salt solution; the micro-channel reactor comprises a constant-temperature pipe, and a spiral channel pipe is sleeved in the constant-temperature pipe; the method comprises the following steps: introducing a nylon 66 salt solution and an anti-solvent into a clash mixer to form a mixed solution in the mixer; introducing the mixed solution into a micro-channel crystallizer, and gradually crystallizing to form salt crystal slurry; and separating and drying the nylon 66 salt crystal slurry to obtain solid nylon 66 salt. Therefore, through the micro-channel reactor, the clash mixer and the micro-channel crystallizer, the contact area of reactants is increased, the reaction rate is further increased, and the water consumption and the evaporation energy consumption are effectively reduced. The production cost is reduced, and the production efficiency is improved.

The application discloses an alkali ion passivated non-lead perovskite light-emitting diode and a preparation method thereof, and belongs to the technical field of light-emitting diodes.The light-emitting diode comprises, from bottom to top, ITO conductive glass, a hole injection layer, a hole transport layer, a non-lead perovskite light-emitting layer, an electron transport layer, an electrode modification layer and a metal electrode.The application further provides a preparation method of the non-lead perovskite light-emitting diode.The non-lead perovskite light-emitting layer is prepared by an anti-solvent crystallization method from an alkali ion passivated non-lead perovskite precursor solution and an anti-solvent, and the alkali ion is introduced to inhibit non-radiative recombination loss in a surface and a grain boundary of the non-lead perovskite thin film, so that the light-emitting efficiency is enhanced, and the photoelectric performance of the non-lead perovskite light-emitting diode device is improved.

The present application can provide a polyorganosiloxane and a release composition capable of forming a release layer capable of ensuring solvent resistance by maximizing the bonding strength between a base film and a release layer. In addition, the present application can provide a polyorganosiloxane and a release composition capable of forming a release layer having an appropriate release strength even under room temperature and high temperature conditions, and having little change in release strength even under high temperature and ultraviolet irradiation conditions, and capable of ensuring an excellent residual adhesion rate. In addition, the present application can provide a release layer and a release film and an adhesive film including the release layer as applications of the polyorganosiloxane and the release composition.

The present invention pertains to: a method for forming a large-area perovskite thin film, whereby a uniform, large-area perovskite thin film can be manufactured without using an anti-solvent; a coating agent used in said method; and a perovskite solar cell including said perovskite thin film as a light absorption layer.