Solar Wafers for c-Si Solar Cell Manufacturing

Targray offers a full range of solar silicon wafers for solar cell production. Through our extensive global partner network, we have access to a reliable supply of high quality solar wafers to support both your short and long term product requirements. Our high quality solar silicon wafers can be manufactured to your exact specifications, with custom options for thickness, geometry, bevel edge and more. Currently available standard sizes are:

  • Monocrystalline solar wafers: 156.75 x 156.75 mm
  • Multicrystalline solar wafers: 156.75 x 156.75 mm

Manufacturing Solutions for Solar Technology Developers

The Targray Solar Division is committed to helping photovoltaics manufacturers worldwide reduce their overall Cost/Wt. This begins with sourcing the highest quality solar wafers for solar cell fabrication and processing. Superior solar wafers will yield more efficient PV solar cells. The below table provides sample specifications for our latest line of solar silicon wafers. For additional details, or for information about custom wafers, please contact us.

Conductivity Type p-type / B dopant
Length of Side
Square 156.75 ± 0.25mm
Resistivity 1 – 3 Ω-cm
Lifetime ≥ 5.2 μs
Oxygen Concentration ≤ 5.0E17 atoms/cm3
Carbon Concentration ≤ 5.0E17 atoms/cm3
Thickness 200 μm ± 20 μm
TTV ≤ 30 μm
BOW ≤ 100 μm; ≤ 50 μm
Saw Marks ≤ 15.0 μm
Chips L ≤ 0.5 mm, D ≤ 0.3 mm, No more than 1 per wafer.
Crystal Structure Monocrystalline
Crystal Growth Method Czochralski
Surface Crystal Orientation <100> ± 3o
Conductivity Type P-type
Dopant Boron
Resistivity 1-3 Ω – cm
 (After anneal)
Minority Carrier Lifetime ≥20 μsec
Oxygen Concentration ≤9E + 17 atoms/cm3
Carbon Concentration ≤5E + 16 atoms/cm3
Wafer Thickness 180 ± 20 μm
Wafer Length 156.75 mm
Diagonal Length 156.75
Angle Between Adjacent Sides
90o ± 0.3o
TTV ≤ 30 μm
BOW ≤ 50 μm
Saw Marks ≤ 15 μm

Working closely with our supply partners and organizations including U.S-based SEIA, we help solar manufacturers and project developers worldwide increase their solar cell and photovoltaic module efficiency. Contact us today to learn more.

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+1 (514) 695-8095

To speak with a Targray representative.