Issue Date: June 16, 2008
White LED Formed From A Bulk Material
Energy-efficient light-emitting diodes that produce white light have potential as a next-generation technology for general lighting applications. But current methods to make white LEDs require that they be built up from multiple components. For example, white LEDs can be made by combining red, blue, and green LEDs or by coating blue or near-ultraviolet LEDs with a phosphor material. Wooseok Ki and Jing Li at Rutgers University now report the first bulk semiconductor material that . . .
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