Raw 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 conventional solar cell 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

Related Products & Services

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Solar Cell Materials

High-purity monocrystalline and multicrystalline solar cells with 2 & 3 bus bars.

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Solar Silicon Wafers

An extensive range of solar-grade silicon wafers for PV manufacturing.

solar ingot
Solar-Grade Ingot

Mono- and Multicrystalline ingots made using high-purity polycrystalline silicon.

Contact Targray

For product specifications and pricing information.

+1 (514) 695-8095

To discuss with a representative.