- Contact Person : Ms. wang laura
- Company Name : Zhejiang Longbai Photovoltaic Technology Co., Ltd.
- Tel : 86-575-82392620
- Fax : 86-575-82392620
- Address : Zhejiang,Shangyu,15 DongShang Rd,Shangyu Economic District,Shangyu,Zhejiang.
- Country/Region : China
- Zip : 200120
156 solar wafers
Quasi monocrystalline Wafer Specification
Items | Specification |
Crystal Growth Technique | Cast |
Crystal Structure | Quasi-mono crystalline |
Dimension | 156×156mm±0.5mm |
Thickness | 200±20μm |
Edge Angle | 90°±0.25° |
Diagonal | 220+/-0.5mm |
Bevel edge Angle | 45°±10° |
Chamfer Length | 1.5±0.5mm |
TTV | ≤40μm |
Bow | ≤70μm |
big grain rate | big grain area≥90% G++ |
90%> big grain area ≥70% G+ | |
big grain area <70% G | |
Saw marks | ≤15μm |
Wafer Surface | No stain, splash on surface obvious |
Crack | No crack visible with naked eyes |
Pin Hole | No pin hole |
Conductivity Type | P-type |
Carbon content | ≤5.0×1017 at/cm3 |
Oxygen content | ≤1.0×1018 at/cm3 |
Resistivity | 0.5~3.0Ω·cm |
Life Time | ≥2μs (Brick) |
Edge Defects | 1. Edge chippings: Depth≤0.5mm,Length≤0.5mm, |
Item 2.3total allowed: max 2 places | |
2.indentation:≤0.5mm, length≤0.5mm, no“V”;Depth≤0.5mm, Length≤0.5mm, no“V” shape | |
3. Edge chip : Depth≤0.5mm,Length≤1mm, |
156 solar wafers
