Light-emitting diode
OverviewHistoryPhysics of light production and emissionSingle-color LEDsWhite LEDsOrganic light-emitting diodes (OLEDs)TypesConsiderations for use
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 (corresponding to the energy of the photons) is determined by the energy required for electrons to cross the band gap of the semiconductor. White light is obtained by usin