What are LEDs?
LEDs (Light Emitting Diode) are solid-state lighting components. They have no moving, fragile parts and can last for decades. They can be many times more energy efficient than light bulbs, depending on the application.
LEDs differ from traditional light sources in the way they produce light. LED is a semiconductor diode. It consists of a chip of semiconducting material treated to create a structure called a p-n (positive-negative) junction. When connected to a power source, current flows from the p-side or anode to the n-side, or cathode, but not in the reverse direction. Charge-carriers (electrons and electron holes) flow into the junction from electrodes. When an electron meets a hole, it falls into a lower energy level, and releases energy in the form of a photon (light).
Lifetime
In comparison to other light sources, LED has a much longer lifespan that stretches from 40 000 hours to 80 000 hours. This is 50 times longer than incandescent lamp and 2.5 times that of fluorescent lamp. Rated lamp lifetime is valued when the lamps are 70% brighter than usual, and the real lifetime of lamps are closely related to the device and operation, in addition, heat elimination, working temperature, working voltage and current and maximum junction are the important facotrs in lifetime.
Color
Most of people get acquainted with LED from the light indicator and digital display of electronic devices. Until now, LED technology application is still restricted in those small displays due to the narrow color choices caused by the limited light output of LED. Nevertheless, with the application of new LED materials and improvement of production process, high-brightness LED could produce various colors covering in the whole visible light spectrum, the white light color temperature 2700K,3000K and 5000K are available, and the differences of LED white light are confined to a narrow scope ±200K.
Efficiency
The efficacy of LED changes along with the color and white color temperature. For example, the efficiency of 5000K white light is 15-20% higher than 3000K white light. We provide the maximum luminous efficiency up to 100lm / w, achieving the maximum output in terms of performance per watt.
