Woodall, Jerry M. Department of Electrical Engineering, Yale University, New Haven, Connecticut.
Guido, Louis J. Department of Electrical Engineering, Yale University, New Haven, Connecticut.
Last reviewed:February 2019
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- Principles of operation
- Fabricating LEDs
- Indicators and displays
- Optical fiber transmission
- Links to Primary Literature
- Additional Readings
A semiconductor device which converts electrical energy into electromagnetic radiation, sued for lighting and other purposes in a wide range of electronic applications. Light-emitting diodes, abbreviated LEDS, can emit useful radiation in the near-ultraviolet to the near-infrared range, that is, from about 400 to over 1500 nanometers. Because of their longer lifetimes, lower energy use, ruggedness, faster switching and smaller sizes compared to traditional incandescent technologies, LEDs have become the lightning source of choice for many applications (Fig. 1). See also: Electromagnetic radiation; Energy; Fiber-optic circuit; Incandescent lamp; Light; Optical communications
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