header Sub DMT

PV Wafering Applications

Wafering - wire diameter

  • Diameter = .140 mm

Key benefits

Faster speed rates 

  • 2 x faster then slurry on average
  • Increased capacity without increasing capital expenditures
  • Faster ROI due to reduced initial capital investment
  • Higher machine productivity

Roadmap to lower cost/watt

  • Lower cost/watt resulting from reduced total cost of ownership
  • Less expensive secondary process costs
  • Re-use of wire
  • Reduced utilities
  • Flatter wafers

Less plant complexity

  • No slurry mixing or supply and recovery systems required
  • Reduced running costs such as electricity of cooling water
  • Potential silicon kerf recycling

Flexibility and support

  • Diamond wire works on Meyer Burger saws and other saw platforms
  • Meyer Burger upgrade kits available
  • Start-up kits available
  • On-site process support provided

Wafering with DMT's .140 mm diamond wire

Solar wafers cut with DMT's .140 mm diamond wire

Wafering throughput comparison

FEATURESLURRYDIAMOND WIRE
Feed Ratee.g. 0.42 mm/mine.g. 1.0 mm/min
Cutting Time - 156 x 156 mm6.8 hours3.6 hours
Cutting Time - 125 x 125 mm5.6 hours2.6 hours
Capacity - 156 x 156 mm6500 wafers/day13800 wafers/day
Capacity - 125 x 125 mm7800 wafers/day16100 wafers/day
Heat Induction40 - 60 °C< 20 °C

*Calculation basis: Meyer Burger DS 264; loading length = 800 mm; wafer thickness = 0.18 mm; (core) wire diameter = 0.120 mm

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