WHAT IS AN LED ?
In the simple’s terms, light – emitting diode (LED) is a semiconductor device that emits lights when an electric current is passed through it. Light is produced when the particles that carry the current (known as electrons and holes) combine together with in the semiconductor material.
Since light is generated within the solid semiconductors materials, LED’s are described as solid – state deices. The term solid – state lighting, which also encompasses organic LEDs, distinguishes this lighting technology from other sources that use heated filaments (incandescent and tungsten halogen lamps) or gas discharge (Fluorescent lamps).
Early LED devices emitted low – intensity red light. Remember the blinking light on your old telephone answering machine? That was an LED. Modern LEDs are brighter and available across a number of wavelengths, including visible, ultraviolet and infrared. The bottom line is this : LED are a better way to bring to life.