High-purity Polycrystalline Silicon

Electronic Materials

Generic names Polycrystalline Silicon, Polysilicon
Product name Polycrystalline Silicon
Main applications For semiconductor applications, polycrystalline silicon is changed into single crystalline silicon and then single crystalline wafers to become electrical components such as integrated circuits, which are embedded in electronic devices as main components
For solar cell applications, polycrystalline silicon is a material for making crystalline-type silicon solar power cells that use mono-crystalline or multi-crystalline silicon for substrates
Packing / shipping method Cardboard boxes
Chemical formula Si
Special properties High purity of 99.999999999% (eleven 9s)

Product overview

Polycrystalline Silicon is produced by reacting metallic silicon and hydrogen chloride to produce trichlorosilane, which is then purified through distillation and subject to hydrogen reduction at high temperatures. Polycrystalline Silicon made by Tokuyama attains the world's highest level of purity, and can therefore increase the performance of semiconductors and solar cells.

Special characteristics

  • Tokuyama's polycrystalline silicon has a high purity of 99.999999999% (eleven 9s). Without this level of purity, manufacturing products will become problematic when producing single-crystalline silicon wafers in later production processes. Semiconductor applications in particular require a high degree of purity.
  • Tokuyama is applying its expertise in quality control accumulated over many years of developing semiconductor applications to supply polycrystalline silicon of consistent quality and high purity to every part of the world.

For more information:

Polysilicon Sales Department, Specialty Products Business Division
TEL: +81-3-5207-2531
FAX: +81-3-5207-2576

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