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Brighter Whites, Greens and Blues in Store for LEDs

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ALBUQUERQUE, N.M., April 25 -- A new process of growing gallium nitride on an etched sapphire substrate, called cantilever epitaxy, may help light up the world with brighter green, blue and even white semiconductor light-emitting diodes (LEDs), or solid-state lighting. The process was developed at the Department of Energy's Sandia National Laboratories. Colored LEDs are of interest for displays and even higher-powered lamps like traffic lights. A national initiative is beginning to develop solid-state sources for high-efficiency white lighting. "Our new process eliminates many of the problems...Read full article

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    Published: April 2003
    Glossary
    gallium nitride
    Gallium nitride (GaN) is a compound made up of gallium (Ga) and nitrogen (N). It is a wide-bandgap semiconductor material that exhibits unique electrical and optical properties. Gallium nitride is widely used in the production of various electronic and optoelectronic devices, including light-emitting diodes (LEDs), laser diodes, power electronics, and high-frequency communication devices. Key points about gallium nitride (GaN): Chemical composition: Gallium nitride is a binary compound...
    cantilever epitaxyConsumergallium nitridelight-emitting diodesMicroscopyNews & FeaturesSandia National Laboratoriessapphire substrateSensors & Detectorssolid-state lightingLEDs

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