Korea Zinc Obtains Carbon Footprint Certification for Semiconductor Sulfuric Acid

Fourth Certification Following Zinc, Silver, and Copper Products

Korea Zinc has obtained a carbon footprint (PCF) certification for semiconductor sulfuric acid from the UK Carbon Trust.

On the 6th, Korea Zinc announced on the 9th that it held a certificate awarding ceremony for the semiconductor sulfuric acid carbon footprint certification at its headquarters in Seoul, attended by Kim Ki-jun, Vice President of the Sustainability Management Division, and Tom Cumberledge, Director of the Carbon Trust Certification Division.

Tom Cumberbatch, Director of the Carbon Trust Certification Headquarters, and Kim Ki-jun, Vice President of the Sustainable Management Headquarters, are shaking hands at the Carbon Footprint Certification Award Ceremony. Photo by Korea Zinc

The Carbon Trust is a climate change response and carbon reduction advisory organization established by the UK government in 2001.

Semiconductor sulfuric acid is one of the by-products generated during the smelting process and is a key material used to remove impurities on the surface of wafers during semiconductor manufacturing. These impurities affect the yield and reliability of semiconductors, making the cleaning process so important that it accounts for one-third of the entire semiconductor process. High-purity refined semiconductor sulfuric acid is required to remove and clean impurities on the wafer surface.

Korea Zinc’s semiconductor sulfuric acid production scale was 240,000 tons annually as of last year. This accounts for about 65% of the total domestic supply and is the largest scale worldwide. 98% of Korea Zinc’s production volume is supplied to Samsung Electronics and SK Hynix.

Based on carbon footprint certifications for zinc, silver, copper, and the newly certified semiconductor sulfuric acid, Korea Zinc plans to develop technologies to reduce carbon emissions. Subsequently, through process improvements and expanded application of renewable energy, the company aims to obtain carbon reduction certifications and ultimately achieve carbon neutrality certification.

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