High-purity Metallic Boron

Electronic Materials

Generic names Metallic boron, boron
Product name Metallic boron
Main applications Additive for single-crystalline silicon (acceptors and dopants for p-type semiconductors)
Packing / shipping method 50- and 150-gram polyethylene bottles
Chemical formula B
Special properties High level of purity and applicable as a semiconductor acceptor

Product overview

Metallic Boron

In order to employ silicon as an electronic component, it is necessary for an electrical current to flow in the right amount in the silicon. Therefore, additives are used in miniscule amounts when producing single-crystalline silicon from polycrystalline silicon. Metallic boron is used as an additive to make p-type semiconductors, while phosphorous, antimony, and arsenic are used to make n-type semiconductors. The silicon as well as these additives must be of high purity for this process to function.

Special characteristics

  • High-purity metallic boron can be used to manufacture p-type single-crystalline silicon
  • Tokuyama is one of the few companies that manufacture metallic boron for use in semiconductor-grade silicon
  • Non-toxic, odorless, gray-black colored crystals
  • The melting point of 2,300 °C is higher than that of polycrystalline silicon

For more information:

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

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