LED downlights are products developed on the basis of traditional downlights by applying new LED lighting sources. Compared with traditional downlights, they have the following advantages: energy saving, low carbon, long life, good color rendering, and fast response speed. The design of LED downlight is more beautiful and lighter. It can maintain the overall unity and perfection of architectural decoration during installation without destroying the setting of lamps. The light source is hidden inside the architectural decoration, the light source is not exposed, no glare, and the human visual effect is soft and uniform. .
LED downlight luminescence principle:
The terminal voltage of the PN junction constitutes a certain potential barrier. When a forward bias voltage is applied, the potential barrier drops, and the majority carriers in the P and N regions diffuse to each other. Since the mobility of electrons is much greater than that of holes, a large number of electrons will diffuse to the P region, which constitutes the injection of minority carriers in the P region. These electrons recombine with the holes in the valence band, and the energy obtained during the recombination is released in the form of light energy. This is the principle of PN junction light emission.