LEDs (Light Emitting Diodes) are recognized as the future in green lighting because they are extremely energy efficient and contain no hazardous mercury materials as fluorescent lamps do.
LEDs are lights that are used extensively in electronic devices, equipment, and consumer products. Their uses vary from signaling, signage and illumination. They are preferred over other illuminating technologies because of their small size, versatility, longevity, and most importantly because of their high energy efficiency. Recent advances in semiconducting material science and manufacturing techniques have positioned LED technology to be the preferred choice for general indoor and outdoor lighting applications.
While the development of Light Emitting Diodes has evolved steadily throughout the past few decades, the science of LEDs is fundamentally the same. A diode produces light on an atomic level when electrons jump from a higher to a lower state (quantum jump). Certain semiconducting materials facilitate this phenomenon when low voltage electrical current passes through them. In order for this to happen, two different semiconducting materials are bonded together. One is negatively charged while the other is positively charged. An electrical current induces the electrons to jump from the negatively charged material to the positively charged material. Subatomic particles in the form of photons are released in this movement. Photons are perceived as light.
Through research and experimentation, engineers and scientists have developed a variety of LED lighting solutions for many different applications. LEDs can produce many intensities of light-output and any color within the visible light spectrum. Today, the improvements and color quality of LEDs can be utilized in general illumination solutions for buildings and roadways.
LEDs are fundamentally different from other lighting technologies. Fluorescent and incandescent technologies use heat to produce light. LEDs do not. They produce very little heat. In fact, the lighting industry refers to them as "cool lights” and recognizes them as the most sustainable lighting technology today. They are significantly more energy efficient than incandescent lights and do not contain any of the hazardous materials, such as mercury, that other lights do.