Polysilicon for Solar PV Manufacturing
Solar-grade virgin polysilicon for solar wafer producersRaw Polycrystalline Silicon Materials for PV Manufacturing
Raw polycrystalline silicon, commonly referred to as polysilicon, is a high-purity form of silicon which serves as an essential material component in the solar photovoltaic (PV) manufacturing industry. It is the primary feedstock material used for the production of solar cells today. Polysilicon feedstock generally consists of large rods which are broken into chunks or chips of various size, then cast into multicrystalline ingots. The ingot materials are subsequently sliced into silicon wafers suitable for solar cell production.
Integrated Polysilicon Supply Chain Solutions
Since being established in 2005, the Targray Solar Division has grown to become one of the solar PV industry’s largest international suppliers of raw polycrystalline silicon. Today it serves a geographically diverse group of customers that includes many of the solar industry’s most prolific PV manufacturers.
Supported by a robust international partner network, Targray is ideally positioned to meet the polysilicon material needs of commercial PV manufacturers in North America, Europe, Asia, and Africa. The company leverages its extensive solar industry experience to delivering strength, security and resiliency to the global solar silicon supply chain.
Targray Raw Polysilicon Grades
Our silicon feedstock- derived products come in various formats, each which multiple sizing options available:
- High-Purity Solar Grade
- Polycrystalline Silicon Chunks
- Polycrystalline Silicon Chips
- Granular Polycrystalline Silicon
- Secondary-grade polysilicon
- Silicon powder
- Silicon carbon ends
- Discolored silicon
- Recycled Polysilicon
- Silicon pot scraps
- Silicon brick tops & sides
- Silicon ingot tops & tails
| Characteristics | Inspection Method | Unit | Value | |
|---|---|---|---|---|
| Specifications | ||||
| Bulk Element Concentration | Acceptors (B, AL) | LT-FTPL / ASTM 1389 – 00 | ppba | <2 |
| Donors (P, As, Sb) | LT-FTPL / ASTM 1389 – 00 | ppba | <1 | |
| Carbon | LT-FTPL / ASTM 1389 – 00 | ppma | <1 | |
| Total Metals (Fe, Cu, Ni, Cr, Zn, Na) | NAA | ppbw | <20 | |
| Surface Metal Concentration | Fe | CP-MS, GF-AAS | ppbw | <10 |
| Cu | ppbw | <1 | ||
| Ni | ppbw | <1 | ||
| Cr | ppbw | <1 | ||
| Zn | ppbw | <2 | ||
| Na | ppbw | <6 | ||
Working closely with our supply partners and organizations including U.S-based SEIA, we help solar manufacturers and project developers worldwide increase their solar cell and module efficiency. Contact us today to learn more.
Related Products & Services
Solar Cell Materials
High-purity monocrystalline and multicrystalline solar cells with 2 & 3 bus bars.
Solar Silicon Wafers
An extensive range of solar-grade silicon wafers for photovoltaic cell manufacturing.
Solar-Grade Ingot
Mono- and Multicrystalline ingots made using high-purity polycrystalline silicon.
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