Chat with us, powered by LiveChat Engineering / Electronic Engineering Archives | Page 13 of 20 | Wridemy

  A light-emitting diode (LED) is a semiconductor device that emits  light when current flows through it. Electrons in the semiconductor  recombine with electron holes, 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...