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Multicrystalline silicon wafer is the key material used for producing solar cells. They are widely used in photovoltaic power generation, communication, transportation and power supply to remote residential areas, and can also be applied to solar light, lawn lamp, rooftop solar photovoltaic power generation, and other areas. When compared to monocrystalline silicon wafers, multicrystalline silicon wafers require lower purity of raw materials. The crushed silicon, which is produced in the production process of monocrystalline silicon wafer, can be used in production of multicrystalline silicon wafer.
Silicon residue can be purified by single crystal furnace, and is used to produce multicrystalline silicon wafer. Therefore, to appreciate production proportion of multicrystallin and monocrystalline silicon wafers, realization of inner cycle use of silicon materials can greatly reduce cost. Additionally, the configurations of our multicrystalline silicon wafers generally are 125mm*125mm and 156mm*156mm, with thickness of 200um.
Specifications
| Product | Multicrystalline silicon Wafer |
| Conductivity type | P-type |
| Base Area | 156.0mm ×156.0mm±0.3mm |
| Diameter | 219.20mm±0.5mm |
| Thickness | 180 um ±20um;200 um±20 um |
| TTV | ≤30um |
| Resistivity | 0.8-3.0Ωcm. |
| Dopant species | Boron |
| Carbon Concentration | ≤8×1017 at/cm3 |
| Oxygen Concentration | ≤7×1017 at/cm3 |
| Life Time | ≥2us |
| Water surface | As cut and cleaned. NO grease stains and pin holes. |
| Warping | ≤50um |
| Corner Angle | 90±0.2 degree |
| Edge Chips | Length ≤1.0mm,Depth<0.5mm,No more than2 |
| Edge Cracks | Not allowed |
| Saw Marks | Depth ≤15um |
| Pin holes | No visible pin holes with naked eyes |
We PV Company is the major multicrystalline silicon wafer manufacturer based in China. We emphasis greatly on quality control on photovoltaic products, for instance, comprehensive quality inspection on raw materials are conducted as well as checking the semi-finished products randomly and thorough inspection of finished products. Consequently, products such as silicon wafers, solar cells and solar panel of solar modules, and others, are certified by TUV, UL and CE, etc.
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