The principle of luminescence. The LED downlight manufacturer tells you that the terminal voltage of the PN junction constitutes a certain potential barrier. When the forward bias voltage is applied, the potential barrier drops, and the majority of carriers of the P region and the N region diffuse to each other. LED downlight manufacturers tell you that since the electron mobility is much larger than the hole mobility, a large number of electrons will diffuse to the P region, which constitutes the injection of minority carriers into the P region. These electrons recombine with holes in the valence band, and the energy obtained during recombination is released in the form of light energy. This is the principle of PN junction light emission.

LED downlight manufacturers tell you that the characteristics of downlights are to maintain the overall unity and perfection of architectural decoration, without destroying the settings of lamps, the light source is hidden inside the architectural decoration, not exposed, without glare, and the human visual effect is soft and uniform.
1. Energy saving: The power consumption of the same brightness is 1/2.2 of that of ordinary energy-saving lamps. Environmental protection: no harmful substances such as mercury, no pollution to the environment. 3. Economy: The cost of electricity can be reduced because of saving electricity, and the cost of lamps and lanterns can be recovered quickly. 3. Low carbon: Saving electricity is equivalent to reducing carbon emissions. 4. Longevity type: The life of LED lamps is generally 100,000 hours. According to the calculation of six hours of use per day, one LED lamp can be used for 40 years.
The above information is the LED downlight manufacturer's introduction and analysis of the characteristics of downlights, hope it helps you.