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Thin Layers of GaN Deposited on Synthetic Diamond Substrates

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Wafers yield thermal benefits in photonic devices.

Hank Hogan

Besides being a girl’s best friend, diamonds could be a pretty good pal of ultrabright LEDs and laser diodes — provided a new material from Group4 Labs LLC of Menlo Park, Calif., is used successfully in products. The company has devised a way to deposit a thin layer of GaN on polycrystalline diamond. Because diamond is a very good conductor of heat, devices built in the GaN would run cooler and, therefore, better. This benefit applies to transistors and, especially, to lasers and LEDs, Group4’s CEO Felix Ejeckam said. In emitters, he explained, negatively charged electrons and positively...Read full article

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    Published: April 2006
    laser diodesResearch & TechnologyTech Pulsethin layersWafersLasers

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