Light-emitting diode
- Period
- 1962
- Map
- Inventions map
A light-emitting diode (LED) is an electronic component that uses a semiconductor to emit light when current flows through it. Electrons in the semiconductor recombine with electron holes, thereby releasing energy in the form of photons. The color of the light is determined by the energy required for electrons to cross the band gap of the semiconductor. White light is obtained by using multiple semiconductors or a layer of light-emitting phosphor on the semiconductor device.
Sources: Wikipedia — Light-emitting diode · CC BY-SA 4.0
Earlier and later events nearby
- 1867Alaska Purchase
- 1929–1939Great Depression
- 1944Bretton Woods system
- 1962Light-emitting diodeThis page
- 1964Civil Rights Act of 1964
- 1968Treaty on the Non-Proliferation of Nuclear Weapons
- 2001September 11 attacks
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