What do you understand by LEDs? How do they work? - Electronics
What do you understand by LEDs? How do they work?
LEDs refer to the term Light Emitting Diode. LEDs are heavily doped p-n junctions which works under forward bias and emits spontaneous radiation. When the p-n junction is forward biased-
-The excess minority chargers accumulate at the junction boundary on either side.
-When they recombine, energy is released in the form of photons, having energy equal to or lesser than the band gap energy.
-The intensity of light emitted is directly proportional to the forward current.
-The reverse breakdown voltage is low (around 5V).