9N polysilicon wafer ,made into quality cell with 3.85W-4.2W,no broken ,no stain, from famous japanese solar company,good price
Technical Specifications |
Solar Multicrystalline Wafer: 156mm x 156mm |
| | General Characteristics | Features | | Product | Multicrystalline silicon wafer | | Growth Method | Directional solidification | | Conductivity Type | P type | | Dopant | Boron | | Resistivity | 1~3Ω.cm | | Oxygen Content | 1×10 18 atom/cm 3 | | Carbon Content | 4×10 17 atom/cm 3 | | Structural Characteristics | Features | | Side | 156.0mm ± 0.5mm | | Corner diagonal | 1.5mm ± 0.5mm | | | | | Corner Angle | 45°±10° | | Thickness | 180±20μm; 200±20μm | | Surface | No stain or splash on surface | | Mechanical Characteristics | Features | | TTV | ≤30μm | | Bow | ≤40μm | | Surface | No defect | | Saw Mark | ≤15μm |
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polysilicon wafer