Solvent Engineering for High-Performance Perovskite Solar Cells

A perovskite precursor solution, perovskite film, and preparation method for solar cells that improve uniformity and wettability of the precursor solution on substrates. The solution comprises a non-volatile salt with a specific molar ratio, which enables controlled precipitation of the perovskite material. The solution's uniformity and wettability are enhanced through precise control of the precursor solution's composition and processing conditions. This solution enables the production of high-quality perovskite films with improved uniformity and wettability on substrates, overcoming common challenges in perovskite film preparation.

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Preparation method for organic-inorganic hybrid perovskite solar cells and their large-area counterparts through controlled nucleation and crystallization. The method involves the precise control of precursor solution composition and processing conditions to achieve uniform grain size and defect-free perovskite films. The solution is prepared with specific mass ratios of key components, and the precursor is processed through controlled nucleation and crystallization steps. The resulting films exhibit superior morphology, crystallinity, and defect density compared to conventional spin-coating methods. The method enables the large-scale production of high-quality perovskite solar cells with uniform optical properties.

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Preparation of high-efficiency perovskite solar cells through controlled crystallization through a novel additive engineering approach. The approach involves spin coating a perovskite precursor solution containing a semiconductor additive (semicarbazide hydrochloride) onto a hole transport layer, followed by dropwise addition of an anti-solvent to achieve film formation. The film is then annealed to optimize crystallization conditions. The additive enables precise control over the perovskite's crystallization properties, including defect density and Sn2+ distribution, which are critical factors for achieving high efficiency and stability in perovskite solar cells.

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A novel precursor solution for perovskite solar cells that enables improved crystal quality and optical properties. The solution comprises a specific composition of DMF, DMSO, FAI, PbI2, FAHCOO, FACHCOO, and FASCN, with optimized molar ratios. This composition enables the formation of perovskite materials with enhanced crystal structure, reduced defects, and superior optical performance compared to conventional precursors.

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Homogeneous perovskite nanocrystal thin films prepared through an in-situ solution process that incorporates specific ligands to control crystallization kinetics and grain size. The method involves adding bidentate ligands like 6-aminocaproic acid hydrobromide and 3-aminopropionic acid hydrobromide to the precursor solution, which enables rapid crystallization of perovskite nanocrystals while maintaining uniform size and quality. This approach enables the production of homogeneous perovskite films with superior optoelectronic properties compared to traditional methods.

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Micron-scale grain MAPbBrxI3-x (1.5<x<3) polycrystalline film prepared through a novel two-step process that combines precise precursor formulation and controlled dropwise addition of solvents. The process involves creating a uniform clear solution through ultrasound-assisted dissolution, followed by the addition of dimethyl sulfoxide to enhance solubility. The solution is then applied to a substrate treated with ozone, and the film is processed through spin coating at optimized conditions to achieve micron-scale grain structure. The film's morphology is optimized between 80°C to 150°C for optimal grain size and uniformity.

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Coating perovskite solar cells with enhanced efficiency through controlled crystallization. The coating process involves maintaining uniform temperature and fluidity during precursor solution delivery, preventing premature crystallization and precipitation. This approach enables precise control over the precursor solution's properties, ensuring uniform solute distribution and crystal growth. The resulting perovskite layers exhibit improved crystallinity, reduced grain size, and enhanced photoelectric conversion efficiency compared to conventional coating methods.

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A method for preparing perovskite solar cells that enables precise control of the perovskite light-absorbing layer (PABL) film quality through optimized processing conditions. The method involves preparing a metal halide film on a substrate, followed by spin-coating an organic salt solution to form the PABL film. The film is then subjected to controlled thermal treatment to achieve uniform crystallization and grain size distribution. This approach enables the production of high-performance PABL films with controlled defects and uniform grain size, which are critical factors in perovskite solar cell performance.

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A method for preparing high-efficiency low-temperature perovskite solar cells through controlled crystallization of perovskite precursor solutions. The method employs a novel precursor-solvated mesophase-FAPbI3 crystallization route, where ionic liquid additives enhance film quality and defect reduction through self-healing during crystallization. The solution formulation specifically incorporates 1-ethyl-3-methyl-imidazole bisulfate as an additive, enabling the formation of high-quality perovskite films with enhanced grain size and carrier lifetime. This approach enables the production of high-efficiency solar cells with superior performance characteristics at both room and low temperatures.

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A method for preparing and applying perovskite solar cells using a novel approach that enables controlled synthesis of tin perovskite thin films. The method involves a specific ratio of N,N-dimethylformamide to dimethyl sulfoxide in the precursor solution, followed by a controlled deposition process using an anti-solvent. The resulting perovskite films exhibit improved crystallinity and uniformity compared to conventional methods, enabling the fabrication of high-performance perovskite solar cells.

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A simple and efficient method to prepare high-quality bromine-based perovskite films for solar cells. The method involves a two-step process with residence time adjustment. The steps are: 1) Coating a lead bromide (PbBr2) precursor onto a substrate and annealing it to form a lead bromide film. 2) Dropping a cesium bromide (CsBr) aqueous solution onto the lead bromide film and spin coating it to form an intermediate film. 3) Annealing the intermediate film, cooling it, soaking it in an alcohol, and annealing it again to obtain the final high-quality bromine-based perovskite film. The residence time adjustment of the CsBr solution regulates the interaction and crystallization of the perovskite, improving film quality, reducing defects

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A novel method for improving the quality of perovskite solar cells through controlled deposition of metal halide precursors. The method involves a specific sequence of precursor deposition and annealing steps to enhance the crystallinity and uniformity of the perovskite layer. The precise control over precursor concentrations and deposition conditions enables the formation of high-quality perovskite films with controlled grain sizes, which are critical for achieving optimal photovoltaic performance.

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Preventing defects in perovskite solar cells through controlled nucleation and solvent management. The method involves creating a perovskite precursor solution with a higher concentration than the nucleation threshold, then subjecting it to multiple consecutive solvent removal treatments. During these treatments, the solution is pre-generated with numerous mesophase crystal nuclei, which are then controlled to prevent their growth. The solution is then applied to a substrate through spin coating, where anti-solvent droplets are introduced to prevent crystal nucleation. This approach enables the formation of dense perovskite films while maintaining high purity and preventing defects.

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Preparation of high-quality perovskite solar cells through a novel two-step method that enables large-area uniformity and high crystallinity. The method involves first depositing metal halide thin films on a substrate, followed by applying a controlled organic halide solution to the metal halide film. The solution temperature is precisely maintained between 40-100°C to optimize solubility and uniformity of the organic halide. The organic halide solution is then applied to the metal halide film, followed by rapid cooling to facilitate nucleation and growth of large perovskite crystals. This approach addresses the common challenges of perovskite solar cell preparation, particularly in achieving uniform film thickness and crystal size across large areas.

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A perovskite solar cell with enhanced performance through a novel precursor solution and preparation method. The solution comprises lead iodide, methyl iodide ammonium, and organic solvent, with specific concentrations of lead iodide, methyl iodide ammonium, and 1-benzyl-3-hydroxypyridinium chloride. The precursor solution is spin-coated onto a substrate followed by annealing treatment. The method enables the creation of perovskite solar cells with improved carrier mobility, reduced grain size defects, and enhanced passivation properties.

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A method for preparing perovskite solar cells without methylamine components, enabling improved photovoltaic performance through the use of a novel perovskite film. The method employs a two-step process that eliminates the need for methylamine by replacing it with a suitable alternative. The film preparation involves a solution-based method that enables precise control over deposition rates and thicknesses, while maintaining stability and reproducibility. This approach enables the production of high-quality perovskite solar cells with enhanced photovoltaic performance compared to conventional methylamine-containing systems.

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Method to manufacture large-area perovskite solar cells with improved uniformity and efficiency. The method involves mixing a perovskite precursor with an enhancer having a contact angle of 5-13 degrees on the substrate. This enhancer-doped perovskite solution is applied using techniques like bar coating or slot die coating, then dried and heat treated to form the perovskite thin film. This enhancer-containing process enables high-density thin films with low pinhole density compared to conventional methods. It allows mass production of large-area perovskite thin films with uniformity and efficiency suitable for solar cells.

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Preparation of high-quality perovskite layers for photovoltaic devices through a novel two-step method. The method involves depositing an inorganic metal halide precursor layer followed by an organic precursor layer, with the organic precursor solution containing a monovalent cation and a divalent inorganic cation. The precursor solution is prepared with a specific molar ratio of valent cation to divalent inorganic cation that optimizes charge carrier mobility and stability. This approach enables the formation of high-quality perovskite layers with improved optical and electrical properties, while maintaining compatibility with the substrate and enabling large-area photovoltaic devices.

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Regulating and controlling perovskite crystallization to achieve high-quality solar cells. The method involves controlling the crystallization process through precise temperature and composition control, specifically targeting the nucleation and growth stages. This enables the formation of high-quality perovskite films with uniform grain sizes and pore-free structures, critical for achieving high efficiency solar cells.

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A novel method for preparing two-dimensional perovskite thin films through controlled precursor solution preparation. The method optimizes the precursor composition to ensure uniform crystal growth in polycrystalline perovskite films, eliminating the conventional issues of phase heterogeneity and phase distribution. The optimized precursor solution enables precise control over the crystal structure, leading to uniform film properties and improved photovoltaic performance.

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A method for preparing high-performance perovskite solar cells through optimized lead iodide film morphology control. The method introduces a novel solvent system combining DMF (dimethylformamide) with THTO (tris(2,6-furyl)thiophosphine) to dissolve lead iodide, enabling precise control of film morphology. This leads to the formation of perovskite films with enhanced nanochannel structure and abundant pores, which significantly improves the perovskite's photoelectric conversion efficiency. The optimized solvent system enables the development of high-quality perovskite layers through a two-step process that combines conventional spin coating with the novel solvent system.

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A perovskite solar cell preparation method that enables high-quality perovskite films through a novel solution processing approach. The method employs a solution containing macromolecular polymer monomers and an oily initiator to passivate grain boundaries in the perovskite layer. The solution is prepared by combining these components in a specific ratio and processing them through a two-step synthesis process. The solution processing enables the formation of defect-free perovskite films with improved optical properties compared to traditional two-step synthesis methods.

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A method for preparing pure phase perovskite thin films through solvent engineering and additive engineering, enabling the synthesis of high-quality perovskites with controlled stoichiometry. The method employs a novel approach to generate pure-phase perovskites by optimizing the composition and processing conditions through a combination of solvent and additive treatments. This approach enables the production of perovskites with precise control over their composition, enabling the creation of high-quality perovskites with uniform properties.

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A method to enhance the efficiency of perovskite solar cells through controlled precursor solution composition. The method involves preparing high-quality perovskite thin films using a specific composition of the precursor solution, which enables the formation of high-efficiency perovskite solar cells with improved carrier separation and transport properties.

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A method for preparing perovskite solar cells that enables high-quality perovskite films through controlled crystallization. The method involves preparing perovskite precursor solutions with specific solvents and additives, which are then applied to substrates. The precursor solutions are processed through ultrasonic treatment to enhance solvent extraction and crystallization, resulting in high-quality perovskite films with reduced defects. The films are then deposited onto substrates with specific contact layers, enabling efficient perovskite solar cells with improved performance.

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Controlling perovskite crystallization and film morphology through regulation of solvated lead halide compound segregation. The method involves controlling the relative solubility of lead halide compounds in the perovskite precursor solution, which influences the formation rate and density of the solvated lead halide phase. This segregation control enables precise regulation of perovskite nucleation and growth, leading to improved film morphology and crystalline quality. The method is particularly effective for perovskite solar cells with complex phase compositions, enabling the creation of high-quality perovskite films with uniform morphology.

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A perovskite precursor solution for perovskite solar cells that enables controlled nucleation and uniform film growth. The solution combines a perovskite material with a mixed solvent comprising DMF (dimethylformamide) and NMP (N-methylpyrrolidone) in a specific volume ratio. This solvent blend provides a stable and uniform environment for perovskite nucleation, overcoming conventional issues of solvent volatility that can lead to uneven nucleation patterns. The solution can be applied using conventional coating methods, such as spin coating or knife coating, and undergoes a controlled drying process to produce a uniform perovskite film.

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A method for improving the quality of tin-based perovskite crystals for solar cells. The method involves optimizing the composition and processing conditions of the precursor solution to enhance crystal growth while minimizing defects. The approach specifically targets the critical stages of perovskite crystal formation, particularly the nucleation and growth phases, to improve crystal quality and uniformity. The optimized conditions enable controlled crystal growth, reducing defects and improving device performance.

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A perovskite precursor solution for perovskite solar cells that enables efficient, reproducible synthesis of perovskite films. The solution is prepared through a novel method involving the use of a common filter membrane with an average pore size of 0.22um, which prevents the formation of unwanted perovskite phases and maintains film uniformity. The solution composition is optimized to achieve a concentration of 1 mol/L, enabling precise control over precursor composition and preparation conditions. This solution enables the production of high-quality perovskite films with improved stability and reproducibility compared to traditional commercial precursors.

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A two-step method for preparing perovskite films for solar cells that enables large-area uniformity and dense perovskite layers. The method involves first forming a uniform PbI layer on a substrate using a solution dispersion process, followed by rapid solvent removal to create a perovskite film. This approach eliminates the need for large-scale pumping equipment and conventional solvents, while maintaining process stability and reproducibility. The buffer layer can be prepared using a solution dispersion method, allowing for a wide range of buffer materials. The method enables the production of uniform and dense perovskite films for solar cells, particularly in industrial-scale applications.

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A perovskite film preparation method that enables the synthesis of high-quality perovskite materials with reduced defect states, small grain sizes, and enhanced exciton binding energies. The method involves a novel precursor solution preparation step that incorporates CsI and CsBr in a specific molar ratio, followed by controlled heating in a nitrogen atmosphere. This approach addresses the conventional issues of perovskite film growth and grain size control by introducing a new precursor composition that balances the halogen content with the perovskite structure. The resulting perovskite film exhibits superior photoluminescent properties compared to conventional materials.

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A two-step process for preparing perovskite solar cells that enhances their performance by controlling the reaction and crystallization of lead iodide and organic amine salt. The process involves a spin coating step where the organic amine salt solution is coated on the inorganic component film, followed by a heating and annealing step that prepares the perovskite film. The solution is then heated to promote the reaction between lead iodide and organic amine salt, with additional heating and annealing steps for film stabilization. This approach enables precise control over the lead iodide and organic amine salt ratios, preventing defects that can compromise the device's performance.

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A method for preparing large-grain perovskite thin-film optoelectronic materials through controlled precipitation of the precursor solution. The method involves dissolving the perovskite precursor in a solvent, followed by controlled precipitation of the solution onto a substrate. The precipitation process is optimized to produce perovskite crystals with controlled grain sizes, while maintaining uniform crystal structure and preventing defects. This approach enables the production of perovskite films with uniform grain sizes, which is critical for achieving high-efficiency optoelectronic devices.

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A method for preparing high-performance perovskite solar cells through controlled nucleation and crystal growth during film formation. The method employs a dropwise addition of a second solvent at specific times during the perovskite precursor solution coating process, which enables precise control over nucleation and crystal growth patterns. This approach produces textured perovskite films with uniform crystal structures, resulting in enhanced light absorption and charge transport properties. The textured surface layer is then integrated with hole blocking and electron transport layers, enabling efficient charge collection and conversion in the solar cell.

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Preparation of perovskite films for light-emitting devices through a novel two-step spin coating process. The process involves first creating a mixed solution containing the perovskite precursor and a solvent, followed by a second step where the solution is spun onto a substrate. This approach enables the formation of uniform perovskite films with controlled crystal structure and morphology, which are critical for achieving high-quality light-emitting devices with improved color purity and reduced non-optical phase transitions.

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Preparation method for high-quality organic-inorganic hybrid perovskite films through controlled crystallization and uniform density. The method employs diphenylthiocarbazone as an additive that coordinates with lead ions in lead iodide, thereby regulating the perovskite crystallization process. This approach enables the formation of uniform and dense perovskite films with improved light absorption efficiency and charge transport properties.

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A perovskite film and preparation method for optoelectronic devices that addresses the challenges of grain growth and defect formation in perovskite solar cells. The film is prepared through a novel solution processing route that incorporates a specific additive that selectively protects grain boundaries and passivates defects. This additive, a small molecular compound, prevents precipitation and maintains the perovskite structure while ensuring device stability during processing. The solution processing method enables high-quality perovskite films with controlled grain size and defect density, enabling enhanced optoelectronic performance and device durability.

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Large-area, high-quality, high-uniformity perovskite film and preparation method for solar cells, enabling efficient production of high-efficiency solar modules. The film is prepared through a novel spin coating process that enables uniformity across large areas while maintaining high quality. The preparation method addresses the conventional limitations of spin coating by employing a novel spin coating solution that optimizes film uniformity and quality across the entire area. The resulting perovskite film enables high-efficiency solar cells with improved performance compared to conventional methods.

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A method for preparing high-quality perovskite solar cells through a novel spin coating process that eliminates the need for anti-solvent washing. The method employs 1,8-diiodooctane as a precursor additive to the perovskite precursor solution, which enables precise control over film composition and morphology. The spin-coated perovskite film exhibits superior grain size uniformity, surface roughness, and crystallinity, leading to improved carrier mobility and charge transfer efficiency. The process achieves these benefits without the conventional anti-solvent washing step, enabling large-area printing applications for perovskite solar cells.

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High-quality inorganic perovskite film for solar cells, prepared through a novel two-step process that enables stable CsPbI3-xBrx films. The film preparation method involves the first step of synthesizing CsPbI3-xBrx precursors in a DMF solvent, followed by a second step of depositing the precursor solution onto a substrate. This approach addresses the limitations of conventional DMF-based synthesis by enabling uniform precursor solution preparation and controlled precursor concentration. The resulting CsPbI3-xBrx films exhibit improved stability compared to conventional CsPbI3 films, with enhanced thermal stability and uniformity. These films can be used as the absorber layer in solar cells, enabling high-efficiency solar devices with reduced material concentrations and improved performance.

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A controllable mixed solvent system for perovskite synthesis that enables precise control over precursor solution composition. The system comprises a solvent composition with specific molar ratios of amine compounds, ethanol, acetonitrile, and dimethyl sulfoxide (DMESO), where 0.1 < V1 < 1, 0.1 < V2 < 2, 0.1 < V3 < 10, and 0.1 < V4 < 3. This composition allows for the formation of high-quality perovskite films with uniform crystal structure and controlled grain size, while maintaining the necessary solubility and stability for large-scale industrial production.

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Preparing large-grain perovskite films at low temperature through a novel method that utilizes a specific ratio of anti-solvent to precursor solution. The solution composition enables the formation of dense, crystalline perovskite films with large grain sizes at temperatures below the glass transition point of the substrate, thereby overcoming the conventional solution method's limitations in achieving high-quality perovskite solar cells.

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Method for manufacturing a perovskite photoactive layer with enhanced crystallinity and uniformity. The method involves creating a perovskite precursor film by coating a substrate with a perovskite precursor solution, then applying controlled pressure and heat to the film. This process enables the formation of dense, crystalline perovskite layers with precise control over morphology and optical properties. The method can be performed using various deposition techniques, including spin coating, dip coating, and spray coating, and can be optimized for specific substrate materials and processing conditions.

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A perovskite solar cell with high efficiency and reproducibility, achieved through controlled perovskite film growth. The method employs a novel solvent control approach to precisely regulate perovskite solution evaporation rates, enabling uniform film thickness and grain size control. This enables the formation of perovskite films with controlled crystal sizes and uniform grain distribution, which are critical for achieving high-efficiency solar cells. The controlled growth conditions allow for precise control over perovskite properties, enabling the fabrication of photovoltaic cells with improved stability and performance.

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High-quality organic-inorganic perovskite solar cell light-absorbing layer prepared through a novel solution-based process that enables precise control over film morphology and uniform crystal structure. The process involves a controlled steam-assisted deposition of the perovskite precursor film, followed by baking in a mixed steam atmosphere. This method produces high-quality perovskite films with uniform grain size and crystallinity, enabling the fabrication of large-area solar cells with improved performance compared to conventional one-step methods.

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Method for producing high-performance organic-inorganic hybrid perovskite solar cells through controlled phase formation. The method employs a phase-controlled precipitation process where the precursor solution is precisely controlled to form a uniform phase structure. This controlled phase formation enables the formation of a dense, uniform perovskite film with minimal surface defects, resulting in improved device performance compared to conventional methods.

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A method for preparing high-performance and stable perovskite solar cells through virtual crystal growth and low-temperature solution processing. The method enables the controlled growth of large-grain perovskite films through a novel solution preparation approach that combines conventional solution processing with crystal growth techniques. This approach enables the production of uniform and dense perovskite films with improved carrier transport properties and reduced internal defects, resulting in high-performance solar cells.

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A method for synthesizing perovskite solar cells with improved uniformity and efficiency through a two-step process. The method involves dissolving lead bromide and ammonium bromide in a DMF solution, followed by a controlled spin coating of the precursor solution onto a substrate. The precursor solution is prepared by dissolving lead bromide and ammonium bromide in DMF, with the solution then being heated to form a uniform precursor solution. The precursor solution is then applied to a substrate through a spin coating process, followed by a subsequent treatment in a solvent such as butyrolactone. This two-step process enables the formation of uniform perovskite films with controlled morphology, resulting in improved solar cell performance compared to traditional one-step synthesis methods.

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Fabricating perovskite solar cells through a two-step solution process that enables high-efficiency perovskite solar cells. The process involves forming the perovskite layer through solution processing, followed by deposition of the organic layer on the perovskite surface. The organic layer is formed through a solution of perovskite precursor and halogen acid, which is deposited onto the perovskite layer. This approach allows for the formation of high-quality perovskite layers with improved stability and uniformity compared to traditional solid-state deposition methods.

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A method for producing high-quality black cubic perovskite films through controlled solvent induction at room temperature. The method involves inducing the phase transition of perovskite crystals by carefully regulating the mixed solvent composition during solution preparation, which enables the formation of high-quality black cubic perovskite crystals with uniform grain size and surface quality. This approach enables the production of perovskite films with superior crystallinity compared to traditional heating methods, resulting in improved photovoltaic performance.

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