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Wafer size 125 mm x 125 mm 1. MaterialMulticrystalline silicon (mc-Si)2. Type of dopantp-type, boron doped3. Resistivity0.5-3.0 ohm-cm4. QualityDirectionally solidified, large grains5. ImpuritiesO2 1018, C 3 x 1017 atoms/cm36. Lifetime 10 microseconds7. DimensionsClass I/II/III +/- 0.5mm8. Chamfer0.5-2.5mm9. Squareness90+/- 0.3 degree10. Thickness350 +/- 25 microns11. Bow 50 microns12. Saw marks 10 microns13. Total thickness variation 30 microns14. Surface conditionAs cut, clean and free from stains15. VisualNo cracks, maximum 2 chips/wafer Solar Wafer , Silicon, Multicristaline Solar Wafers