Slot-Die Coating Machine for Provskite Cell

he slot-die coating machine is a key core piece of equipment in the preparation of perovskite thin films. It directly determines the uniformity, density, and thickness accuracy of the film, thereby affecting the power conversion efficiency and long-term stability of the solar cell.

Core Advantages:

• Ultra-High      Film Formation Precision:Dual closed-loop control using servo motors and      grating rulers is adopted, combined with a high-precision coating die head      and injection pump system. The control resolution reaches 0.01 μl with a      response time of 0.01 s, enabling precise film thickness control from      nanometer to micrometer scale (20 nm–150 μm). Coating uniformity deviation      is as low as ±3%, ensuring consistent performance across large-area films.

• High-Efficiency      Mass Production Capability: Supports customized coating widths and adapts      to module production of various sizes. The coating speed can reach 2–200      mm/s. An integrated automatic liquid feeding, degassing, and cleaning      system is provided, achieving material utilization up to 95%, significantly      improving production throughput and reducing material loss costs.

• Wide      Compatibility: Supports coating on rigid and flexible substrates such as      glass, PET, and CPI. It is compatible with various perovskite precursor      solutions and functional layer materials within a viscosity range of      1–2000 cps. Combined with multi-stage coating processes and multi-zone      vacuum adsorption platforms, it meets the process requirements of      different technical routes.

• Stable      and Reliable Design:The coating platform adopts a marble base combined      with an air-floating module structure, achieving platform flatness of ±1.5      μm, effectively avoiding vibration interference during coating. The      coating die head is made of a dedicated alloy material with special      surface heat treatment, offering excellent resistance to organic solvents      and deformation. The long-term equipment uptime remains stable at over      98%.

Technical Parameters:

• Compatible      substrates: Glass, PET, CPI, etc., thickness 2–10 mm
• Maximum      coating size: Supports large-size substrates from 1200 mm × 600 mm up to 2.88      sqm (customizable)
• Coating      speed: 2–200      mm/s (adjustable)
• Film      thickness range: 20 nm–150 μm (wet thickness)
• Control      system: Touchscreen and PLC intelligent control, supporting process      parameter storage and recall

Core Functions

As the core “heart” equipment for perovskite thin film preparation, this slot-die coating machine precisely controls the relative motion between the coating die head and the substrate, uniformly coating functional materials such as perovskite precursor solutions onto the substrate surface at a preset thickness. It enables precise coating of multiple layers including the hole transport layer, perovskite active layer, and electron transport layer, and is compatible with various substrate types such as glass and flexible polymers.

Technical Advantages

• Ultra-High      Film Formation Precision:Utilizing a self-developed high-precision      air-floating motion platform and fluid-chamber coating blade, nanometer-      to micrometer-level (20 nm–150 μm) film thickness      control is achieved. Coating uniformity deviation is as low as ±3% (@400–500 nm),      effectively eliminating edge effects and ensuring phase uniformity of      large-area films.

• High      Material Utilization Efficiency:Equipped with an intelligent metered      pumping system and an enclosed coating environment, material utilization      can exceed 95%, significantly reducing material loss and production costs.

• Full-Scenario      Compatibility:Supports slurry coating within a wide viscosity range of 1–70 cp, compatible      with laboratory-scale substrates of 300 mm ×      400 mm up to mass-production substrates of 1200 mm × 2400 mm. Coating      width can be customized according to customer requirements, meeting      full-process needs from R&D to GW-scale mass production.

• Intelligent      and Stable Control:Equipped with AI algorithms for real-time monitoring of      coating defects, dynamically adjusting coating gap, flow rate, and      substrate movement speed. Coating speed fluctuation is ≤0.5%, ensuring      stable continuous production.

Key Parameters

Video :     https://youtu.be/1pDuOKzuXK0?si=hUbYfpHipmykvF-8