LED, or light-emitting diode, is a semiconductor device that emits light when an electric current is passed through it
. LED lighting products are more efficient, versatile, and have a longer lifespan than traditional incandescent and fluorescent light bulbs
. Some key aspects of LEDs include:
- Materials : LEDs are made from various semiconductor materials, such as indium gallium nitride (InGaN) for blue, green, and ultraviolet high-brightness LEDs, and aluminum gallium indium phosphide (AlGaInP) for yellow, orange, and red high-brightness LEDs
- Colors : LEDs can produce a wide range of colors, including amber, red, green, and blue. To produce white light, different materials are used, such as aluminum gallium arsenide (AlGaAs) for red and infrared LEDs, gallium phosphide (GaP) for yellow and green LEDs, and indium gallium nitride (InGaN) for blue, green, and ultraviolet high-brightness LEDs
- Efficiency : LED lighting is more efficient than traditional lighting methods, as LEDs are directional light sources that emit light in a specific direction, unlike incandescent and fluorescent lights that emit light and heat in all directions
- Applications : LEDs are used in various applications, such as visual signals, illumination, measuring and interacting with processes, and narrow-band light sensors
LED products have a positive impact on energy consumption and environmental sustainability, as they require less energy and have a longer lifespan than traditional lighting methods
