The ScholarGPS website collects information through the use of "cookies" or similar technologies in order to function more efficiently and analyze use of the website. You are free to restrict or block cookies as further explained in our Cookies Policy, however depending on the selection of your settings, the full features/functionality of the website may no longer be available.
Decline
Share:
Light-emitting diode
A light-emitting diode (LED) is a semiconductor light source 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 light is obtained by using multiple semiconductors or a layer of light-emitting phosphor on the semiconductor device.
