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Creates elements for a better world


OCI is the global player supplying the ultra high purity Polysilicon for solar power generation and semiconductors.

Product Features




Polysilicon is the basic core material for Solar PV industry, positioned at the very first step of the PV value chain(ingots wafers cells modules solar power generation systems). OCI provides 10-Nine (99.99999999% purity) Polysilicon for solar power generation and 11-Nine (99.999999999% purity) for semiconductor wafers.

Production Process

Metal Silicon(MG-Si) is produced by reducing and melting Quartz. Metal silicon is then mixed with hydrogen and hydrochloric acid to produce high-purity trichloride silane (TCS). Then it undergoes chemical evaporation at high temperatures to produce high-purity solid Polysilicon.

Solar PV Value Chain
polysilicon, waper, cell, module, solar power
Semiconductor Value Chain
polysilicon, waper, cell, module, solar power

OCI Status

Gunsan plant

Gunsan Plant

Malaysia plant

Malaysia Plant

Since 2006, OCI has been promoting the Polysilicon business, a key raw material for the solar industry. OCI succeeded in commercial production of Polysilicon, which was manufactured only by a small number of European, American, and Japanese companies, and continued to develop technologies for solar energy to expand its business to semiconductor products for the first time in Korea.

Business Commencement


Production Plant Status

- Gunsan Plant: Electronic-grade Polysilicon
- Samalaju Plant: Solar-grade Polysilicon (Capa : 30,000MT/yr)

Major Market

China, Taiwan, Europe, USA, Japan

Key Point

  • Global

    Supplying ultra-high purity Polysilicon to the world's leading semiconductor and solar wafer manufacturers.

  • Top class in
    Cost Competiveness

    Securing the worlds lowest OPEX (Operation Expenses) and CAPEX (Capital Expenditures) through a large-scale production and debottlenecking

  • High Purity of

    Providing high-purity Polysilicon of 10-Nine grade or higher by innovative production process and cutting edge technology


  • Product Name : Polysilicon
  • Chemical Formula : Si
  • CAS No. : 7440-21-3
  • Certification : ISO9001, Green Technology Certification
  • E-mail
    • Polysilicon Sales : +82-2-727-7931
    • Polysilicon Business : +82-2-727-7901
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