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28 May 2007


AXT appoints Wei senior director of technology; explores LEC technology for GaP substrate growth

Supplier of compound semiconductor substrates and raw materials AXT Inc of Fremont, CA, USA has appointed Chia-Li Wei senior director of technology, responsible for directing all aspects of the company's technology development.

Based at AXT's manufacturing facility in Beijing, China, Wei will report to MinSheng Lin, chief operating officer. With over 30 years experience in compound semiconductor manufacturing, Wei brings to AXT his expertise in MOCVD epitaxial processing, and Liquid Encapsulated Czochralski (LEC) growth of both gallium phosphide (GaP) and gallium arsenide (GaAs).

Wei spent more than 25 years in epitaxial process engineering positions with HP-OED, which was acquired by Lumileds and later became Philips Lumileds. Before joining HP-OED, he spent three years working on the LEC growth of both indium phosphide (InP) and low-D gallium arsenide (GaAs) with the central research lab of Varian Associates. Wei has a B.Sc. in metallurgical engineering from the New Mexico Institute of Mining and Technology and a M.Sc. in metallurgical engineering from the University of Tennessee.

"It gives me great pleasure to welcome Chia-Li to AXT," said Phil Yin, chief executive officer. "Having known him for more than 30 years, I look forward to leveraging his considerable expertise in MOCVD epitaxial processing to further strengthen our position in the compound and other specialty semiconductor market.

Picture: Chia-Li Wei is appointed AXT's senior director of technology.

"Further, his vast experience in Liquid Encapsulated Czochralski (LEC) crystal growth technology will allow us to broaden our product portfolio and increase our total market opportunity by offering an alternative to substrates grown using vertical gradient freeze technology (VGF) for certain applications that are not currently addressed at AXT. It will also allow us to explore new compound semiconductor substrate products such as gallium phosphide (GaP), which are best produced using LEC technology. I believe that Chia-Li will be a tremendous asset to our team and I look forward to his many contributions in the coming years."

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