Wacker to expand polysilicon production in Germany


Germany-based chemical producer Wacker Chemie announced plans to expand its semiconductor-grade polysilicon production capacity at its facility in Burghausen, Germany.

The company plans to set up a new production line by early 2025, which could increase its production capacity by over 50%.

It estimates the capital investment would amount to more than €300 million ($324.4 million) and create more than 100 new jobs.  A “substantial” share of the investment would be directed to research and innovation to increase the purity of polysilicon by means of a new, highly automated process, Wacker said in a statement. This process should allow semiconductors to meet rules for smaller designs and increase their power.

Wacker has received approval from the European Commission for funding the R&D project. If the German Ministry of Economic Affairs and Climate Protection also approves the application, the company expects to receive up to €46 million in funding.

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“As the only European producer of ultrapure polysilicon, we are proud to be making an important contribution to strengthening Europe’s microelectronics supply chain with this project,” said Wacker’s CEO Christian Hartel. “By expanding our surface-cleaning capacity, we are creating the necessary conditions for meeting the continued fast-growing demand of our semiconductor customers. Thanks to this investment, we are also able to take the quality of our material to the next level to support the semiconductor sector’s latest technologies,” he added.

Semiconductor-grade polysilicon is even purer than solar-grade polysilicon, at 99.999999999% purity level versus 99.9999%, respectively. Producing it involves an etching process using strong acids to remove the uppermost layer from the surface of the polysilicon chunk.

In March, Wacker announced it would expand its polysilicon capacity for semiconductor applications, in addition to production material for high-efficiency solar cells. The company plans to double its sales in the semiconductor sector by 2030 and has earmarked an investment of around €100 million per year over the next few years.

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