Enable Next Generation Photonics and Electronics


​​Gan -on-Gan Technology



Saint-Gobain Lumilog brings a +30 year lead on Gallium Nitride and its technology to design customizable and high quality GaN substrates for optoelectronic and microelectronic applications.

We work in partnership with industry leaders and academics to co-develop innovative and custom made solutions for the next generation of energy efficient and high reliability devices. 


Learn more about GaN-on-GaN technology.

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Lumilog Products

GaN Free Standing

Free Standing Gallium Nitride

Available in both 2-inch and 100 mm diameter, Lumilog's free-standing n-type GaN substrates deliver consistent high performance.

Gallium Nitride Templates

Lumilog manufactures non-intentionally doped, n-type Si doped, and semi-insulating GaN templates that offer excellent performance in a broad range of applications


Contact Us at Lumilog to learn more.

News & Events

PRODUCT ANNOUNCEMENT: 100mm GaN on Sapphire templates.

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About Lumilog

Building upon +30 years of pioneering work on GaN and on Lumilog’s unique technology leading to high quality GaN substrates, our world-class team is the reliable partner to build next generation energy efficient and extended durability GaN devices







The substrate represents the foundation in semiconductors, and reliability is key. Saint-Gobain Lumilog developed a unique process allowing wafer-to-wafer quality control






We innovate with our customers to meet their needs, with due regard to confidentiality






A pioneer in the field of high quality free-standing (bulk) GaN wafers and GaN templates, we are an innovative team of leading experts in the field of crystal growth and substrate finishing






We care to build solid and responsible relations with our partners



Saint-Gobain Ceramics

Saint-Gobain Lumilog is a business of Saint-Gobain Ceramics which specializes in ceramic-based solutions for industrial clients, from advanced ceramic grains and powders, to specialty refractories and ceramic systems.  Various businesses are active in semiconductors, including Saint-Gobain Crystals for scintillating and photonics crystals, Saint-Gobain Performance Ceramics & Refractories for high performance ceramics, and Saint-Gobain Surface Conditioning for finishing compounds and slurries. 



Saint-Gobain designs, manufactures and distributes materials and solutions that are key ingredients in the well-being of each of us and the future of all. They can be found everywhere in our living places and our daily life: in buildings, transportation, infrastructure, and in many industrial applications. They provide comfort, performance and safety while addressing the challenges of sustainable construction, resource efficiency and climate change.