Spin Coating Techniques for Perovskite Solar Cells

Inorganic tin-lead perovskite solar cell with enhanced performance through optimized preparation. The cell features a flat perovskite film surface, superior light absorption, high power conversion efficiency (PCE), and durability. The preparation method employs a one-step spin coating process, eliminating the need for complex anti-solvent treatments and enabling precise control over film morphology.

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Silver nanowire spin coating liquid for perovskite solar cells that enables high-efficiency transparent electrodes. The liquid combines silver nanowires with polyvinylpyrrolidone, forming cross-linked silver nanowires that enhance light transmission while maintaining electrical conductivity. The nanowire-polymer hybrid coating enables precise control over silver nanowire density and spacing, resulting in superior light transmission properties compared to conventional metal electrodes.

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Perovskite solar cell with improved interface passivation and efficiency through a novel two-step preparation method. The cell features a transparent conductive substrate, an electron transport layer, a perovskite active layer, and a hole transport layer arranged sequentially from bottom to top. The preparation involves a controlled spin coating of a PbI2 precursor solution on the substrate, followed by a short oxygen plasma treatment to create the electron transport layer. The perovskite active layer is then prepared through a two-step process involving a lead iodide precursor solution and a lead iodide precursor solution. The hole transport layer is achieved through a solution of 2,2',7,7'-tetrakis[N,N-bis(4-methoxyphenyl)amino]-9,9'-spirobis Fluorene (Spiro-OMeTAD) or poly-3hexylthiophene (P3HT). The cell achieves improved interface passivation through the controlled formation of the electron transport layer, while maintaining the perovskite active layer thickness and composition.

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Microwave-assisted rapid annealing of perovskite solar cells to enhance carrier transport efficiency. The method involves spin-coating perovskite precursor solution on a conductive substrate, followed by microwave heating and controlled annealing to evaporate the solvent. This process enables the formation of high-quality perovskite light-absorbing layers while maintaining the structural integrity of the material. The resulting perovskite solar cells exhibit improved carrier transport properties compared to conventional thermal annealing methods.

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A method for preparing perovskite light-absorbing layers for solar cells, enabling precise control over the layer thickness and composition. The method involves a controlled spin coating process followed by precise deposition of the perovskite layer, hole transport layer, and electron transport layer. The spin coating process is optimized for uniform dispersion of the perovskite precursor, while the subsequent deposition steps ensure precise layer thickness and composition control. This approach enables the production of high-quality perovskite solar cells with uniform optical and electrical properties.

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Organic-inorganic hybrid perovskites for photovoltaic applications that replace lead with less toxic materials while maintaining high conversion rates. The hybrid perovskites contain ammonium-based ligands and exhibit improved stability to moisture compared to conventional lead-based perovskites. The perovskites can be prepared through spin coating or evaporation methods, and their photovoltaic devices can be fabricated in thin layer or crystalline forms.

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A two-step method for preparing perovskite solar cells that combines the advantages of dry and wet processing techniques. The method involves first preparing a lead halide precursor solution containing lead iodide and cesium halide, followed by a subsequent organic component solution containing methylamine hydroiodide and organic dopants. The precursor solution is prepared through a dry process, while the organic component solution is prepared through a wet process. The precursor solution is then applied to the substrate using a spin coating process, followed by the organic component solution. The resulting perovskite solar cells exhibit high uniformity and pinhole-free structures, enabling large-area production while maintaining high photoelectric efficiency.

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Solution-processed perovskite solar cell manufacturing method that enables efficient fabrication of photovoltaic devices using a single-step lamination process. The method employs a silver nanoparticle film as the top electrode, which is fabricated through spin-coating and annealing of nanoparticle silver ink on a PET substrate. The PEDOT:PSS/D-sorbitol layer plays a crucial role in enhancing device adhesion and electrical contact during lamination. The silver nanoparticle film is formed at elevated temperatures to achieve optimal sheet resistance and surface roughness. This approach enables the production of high-efficiency perovskite solar cells with improved stability compared to conventional metal contacts.

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A method for preparing perovskite solar cells through magnetron sputtering of zinc oxide/tin dioxide double electron transport layers. The method involves creating the double electron transport layer using magnetron sputtering of zinc oxide, followed by spin-coating of tin dioxide to form a perovskite solar cell. The zinc oxide layer enhances electron transport properties, while the spin-coated tin dioxide layer improves film compactness and carrier mobility. This combination enables improved photoelectric conversion efficiency and stability in perovskite solar cells.

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A method for preparing perovskite solar cells with improved light absorption using diethyl carbonate as an environmentally friendly green solvent. The method employs diethyl carbonate as a solvent in the crystallization process, where it forms a strong intermolecular interaction with perovskite material through a one-step spin coating strategy. This approach enables the formation of high-quality perovskite films with superior crystallization properties, resulting in enhanced light absorption and improved photovoltaic performance.

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A method for preparing high-efficiency perovskite solar cells with enhanced charge transport and reduced recombination through a novel interface engineering approach. The method involves creating a modified perovskite film on a titanium dioxide (TiO2) substrate using a specific nanosolution of sodium fluorescein. The modified film is prepared through a two-step spin coating process that incorporates the fluorescein solution into the TiO2 substrate, followed by a post-annealing treatment. This approach enables the formation of densely packed perovskite crystals with uniform particle size and thickness, while also introducing a fluorescence-enhanced passivation layer between the perovskite and TiO2 interfaces. The modified perovskite film is then integrated with a hole transport layer and external circuitry to produce high-efficiency solar cells.

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A method for manufacturing a perovskite solar cell with improved efficiency and roughness by treating the electron transport layer with a specific solution. The method involves applying a lithium bis(trifluoromethane)sulfonimide (Li-TFSI) solution to the electron transport layer and heat treating it. This improves the roughness and carrier mobility of the electron transport layer, which enhances the overall solar cell performance. The treatment is done using a simple spin coating process without specialized equipment compared to surface treatments like plasma or TiCl4. The Li-TFSI treatment can be done on both compact and mesoporous TiO2 electron transport layers.

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High-efficiency ferroelectric perovskite solar cells produced through a novel fabrication process that integrates ferroelectric perovskite nanoparticles with a biopolymer matrix. The process involves depositing ferroelectric perovskite nanoparticles on a conductive substrate, followed by a biopolymer matrix containing the nanoparticles. This matrix is then applied to a metal oxide layer, and a charge transport layer comprising natural biopolymer and a charge carrier material is deposited. The solar cells achieve high efficiency (39.32%) through the integration of ferroelectric perovskite nanoparticles with a biopolymer matrix, which enables environmental sustainability and efficient charge transport.

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A method for preparing high-quality, high-purity CsPbBr3 perovskite solar cells through liquid-phase continuous spin coating. The method employs a continuous spin coating process to synthesize CsPbBr3, followed by a direct phase transition to form the solar cells. This approach eliminates the need for organic precursors and post-processing steps, resulting in superior photovoltaic performance compared to conventional methods.

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Flexible perovskite solar cells with enhanced photoelectric performance and stability through a novel interface layer that incorporates an azobenzene-based additive. The additive, with functional groups like amino, carboxyl, hydroxyl, or sulfonic acid, regulates perovskite crystal growth and ion migration, while the interface layer provides mechanical stability through hydrophobic passivation. The solar cells achieve high photoelectric conversion efficiency and long-term stability on flexible substrates, particularly when combined with a spin-coated hole transport layer and a metal electrode.

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A method for preparing high-quality potassium bromide-doped perovskite thin films through spin coating, which enables enhanced photoelectric conversion efficiency in perovskite solar cells. The method involves spin coating potassium bromide into the perovskite precursor solution, followed by deposition of the perovskite layer. The spin coating process ensures uniform distribution of potassium bromide, while the subsequent hole transport layer preparation enables precise control over the perovskite film properties. The final electrode layer is prepared through evaporation, resulting in a high-quality perovskite solar cell with improved efficiency.

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A method for preparing high-quality perovskite films through controlled spin coating and post-processing. The method employs a novel approach by incorporating bismuth ferrite as an anti-solvent additive during spin coating, followed by precise annealing conditions to achieve optimal crystallinity and surface morphology. This approach enables the production of perovskite films with superior grain size, uniformity, and surface roughness, which are critical factors for achieving high carrier mobility and charge transfer efficiency in solar cells.

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Method for enhancing long-term stability of perovskite solar cells through optimized doping and coating processes. The method employs a novel doping approach that incorporates methyl pyrrolidone and cesium doping into the perovskite layer, followed by precise control of the perovskite layer deposition and hole transport layer formation. The coating process ensures uniform perovskite layer deposition, while the precise control of the mixed solution preparation enables precise doping concentrations. The method also incorporates a specific heat treatment protocol that balances thermal stability with optical performance.

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Perovskite solar cells with improved stability and efficiency through enhanced interface engineering. The cells incorporate a dense titanium dioxide ion transport layer, a spiro-OMeTAD hole transport layer, a perovskite layer, a hole transport layer, and a metal electrode layer. The ion transport layer is achieved through a spin-coating process using titanium dioxide and mesoporous titanium dioxide precursors. The spiro-OMeTAD layer is prepared through a controlled reaction of titanium dioxide with anionic metal organic frameworks. The perovskite layer is CH3NH3PbI3 (MAI), and the hole transport layer is a spiro-OMeTAD layer doped with an anionic metal organic framework material. The metal electrode layer is a metal oxide. The precise control over the precursor composition and processing conditions enables the creation of high-quality perovskite layers with reduced defects and improved charge transport properties.

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Enhancing perovskite solar cell performance through interface modification between the perovskite layer and hole transport layer. The modification involves incorporating an orally phenophene salt-based interface layer between the perovskite and hole transport layers, which improves charge transport efficiency and reduces recombination. The interface layer is prepared through spin-coating a solution onto the perovskite layer. This interface modification enables enhanced charge collection and reduced leakage current, leading to improved solar cell efficiency.

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