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Kyma ships free-standing, single-crystal GaN substrate

Posted: 22 Feb 2002 ?? ?Print Version ?Bookmark and Share

Keywords:kyma technologies? kyma? wafer substrate? wafer? substrate?

The company has shipped what is claimed to be the world's first single-crystal 50.8mm GaN wafer for use as a base material in communications and semiconductor products. The GaN substrates are n-type, single crystals that measure 50(?)-by-500(H)?m and provide >90 percent usable area.

Free-standing GaN substrates are claimed to provide manufacturers higher IR, visible and UV transmission, high thermal conductivity, and exact lattice-matching. This eliminates stress and defects induced by growing GaN epi-layers on non-nitride substrates.

High-purity GaN substrates allow GaN-based device manufacturers to eliminate processing steps and improve device quality over those grown on other substrates, such as sapphire and silicon carbide.

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