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Working mode LED (Light Emitting Diode)
As said before, the LED is a family of diode made from semiconductors. How it works is similar to the diode which has two poles, namely Positive pole (P) and the negative pole (N). LEDs will only emit light when energized forward voltage (forward bias) from the anode to the cathode to.
LEDs consist of a semiconductor chip in doping thus creating junction P and N. The definition of doping in the semiconductor process is the process of adding impurities (impurity) on a pure semiconductor to produce desired electrical characteristics. When LED flowed forward voltage or bias forward that of anode (P) to the cathode (K), excess electrons in the N-type material will move to the area with excess Hole (hole) ie areas that are positively charged (p-type material). When electrons meet with Hole will release the photon and the light emitting monochromatic (one color).
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