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Solar Silicon Wafers
Targray offers a full range of monocrystalline and multicrystalline solar wafers for solar cell manufacturing. Through our extensive global partner network, we have access to a reliable supply of high quality solar wafers to support both your short and long term product requirements. Our high quality solar wafers can be manufactured to your exact specifications.
We offer silicon solar wafers in the following sizes:
- Mono 125x125 mm
- Mono 156x156 mm
- Multi 156x156 mm
Our goal is to help you reduce your overall Cost/Wt. This begins with sourcing the highest quality solar wafers for your solar cell fabrication and processing. Superior solar wafers will yield more efficient pv solar cells.
Below are sample specifications. Custom specifications are available.
| Multi Wafer Specification | |
| . | |
| Conductivity Type | P |
| Shape | Square 156 × 156 ± 0.5 mm |
| Resistivity | 0.5 - 3 Ω-cm |
| Lifetime | ≥2 µs |
| Oxygen Concentration | ≤1 × 1018 atoms/cm3 |
| Carbon Concentration | ≤5 × 1016 atoms/cm3 |
| Thickness | 200 µm ± 20 µm |
| TTV | ≤30 µm |
| BOW | ≤50 µm |
| Saw Marks | ≤15 µm |
| Chips | L ≤1 mm, D ≤1 mm, Max. 2 places |
| Mono Wafer Specification | |||
| . | |||
| Crystal Structure | Mono | ||
| Crystal Growth Tech. | Czochralski | ||
| Crystal Orientation | <100> | ||
| Conductance Type | P | ||
| Dopant | Boron | ||
| Resistivity | 0.5 - 3 | Ω-cm | |
| 3 - 6 | |||
| Minority Carrier Lifetime | ≥10 µsec | ||
| Carbon Concentration | ≤1 x 1017 atoms/cm3 | ||
| Oxygen Concentration | ≤1 x 1018 atoms/cm3 | ||
| Wafer Thickness | 200 ± 20 µm | ||
| Wafer Length | 125 | 156 | mm |
| Diagonal Length | 150 or 165 | 195, 200 or FSQ | |
| Square Sides Angle | 90° ± 0.5° | ||
| TTV | ≤30 µm | ||
| BOW | ≤50 µm | ||
| Saw Marks | ≤15 µm | ||
We guarantee that the material will meet the quoted specifications. Contact us today for all your monocrystalline and multicrystalline silicon wafer needs.