The PV-360 is a high-volume, in-line spray doping system for the thin and uniform application of phosphoric and boric acid based dopants to crystalline photovoltaic cells for the in-line thermal diffusion and laser doped selective emitter processes. Now in its 3rd generation, the PV-360 leverages USI’s proprietary nozzle-less ultra-Thin Coating Application Technology (tCAT) for a more uniform, thinner coating compared to conventional nozzle based spray, roll coating or fog coating technologies.

Features and benefits:

• Proprietary, nozzle-less ultra-Thin Coating Application Technology (tCAT)
• Typical coatings applied include:
  • Phosphoric acid based dopants
  • Boric acid based dopants
  • Compatible with water based and solvent based dopants
• Non-contact coating application with excellent coating transfer efficiency – up to 99%
• Process width: 914mm (36 inches)
• Compatible with any in-line thermal diffusion furnace
• Long-life, high speed traversing mechanism with servo motor drive
• Constructed with materials compatible with acidic and caustic coating liquids
• Isolated and ventilated spray area
• PAC controller with touchscreen HMI
• PMP-200 Precision Metering Pump liquid delivery system, features:
  • Servo drive positive displacement liquid metering pump
  • Dual pump design for uninterrupted operation
  • Automatic pump refill from on-board PFA coating reservoir
  • Data logging
• Conveyor system:
  • Teflon coated Kevlar mesh belt
  • Up to 1.8 meters/minute (5.9 feet/minute) speed
  • Accommodates up to six (6) rows of 125mm (5 inch) wafers
  • Integrated water-based conveyor belt cleaning and drying system
  • Water-based conveyor belt cleaning system
• Optional wafer drying system