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This Co. have total
5
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Multi Solar Wafer Specification
156 X 156
1. Scope
The Wafer is a square multicrystalline silicon p-type substrate for solar cell applied; From Metallization solar grade silicon.
2. Wafer Specification
2-1 Properties
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Item
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Specification
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Unit
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Conductive Type, Dopant
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P-Type, Boron
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N/A(*5)
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Resistivity
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I：0.5~3
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Ohm-cm(*4)
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Brick lifetime
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≥2
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µ s
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2-2 Physical Dimensions
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Item
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Specification
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Unit
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Dimension
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156±0.5 X 156±0.5
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mm
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Bevel edge length
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0.5 - 2
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mm(*1)
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Right Angel
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90 ± 0.3
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Degree
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Thickness
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220 ± 30
240 ± 30
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µ m(*2)
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TTV
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≤30
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μm
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2-3 Appearance
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Item
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Specification
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Unit
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Chip
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The Chip length must less than 3 mm or depth must less than 0.5mm
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mm
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Saw mark
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≤20
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μm
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Micro-grain
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1cm less than 10 grain, and the area sm aller than 2 X 2 cm²
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Cm/cm²
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Cracks
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None allowed
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N/A
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Pin holes
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None allowed
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N/A
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Contamination
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No chemical or organic residue, staining , or extraneous material permitted on wafer surface
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N/A
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