LED is the abbreviation of Light Emitting Diode (LED), also known as light emitting diode. Such semiconductor elements are commonly used as indicator lights and display panels. It can not only directly convert electric energy into light energy with high efficiency, but also has a service life of tens of thousands of hours to 65,438+10,000 hours. At the same time, it has the advantages of not being as fragile as traditional light bulbs and saving electricity.

Light-emitting diode is called led for short. Diodes made of compounds of gallium (Ga), arsenic (AS) and phosphorus (P) can emit visible light when electrons and holes recombine, so they can be used to make light-emitting diodes, as indicator lights in circuits and instruments, or as text or digital displays. Gallium arsenide phosphide diode emits red light, gallium phosphide diode emits green light and silicon carbide diode emits yellow light.

It is a semiconductor diode, which can convert electric energy into light energy. Usually abbreviated as LED. Light-emitting diodes, like ordinary diodes, are composed of PN junctions and also have unilateral conductivity. When a DC voltage is applied to the LED, holes injected from the P region to the N region and electrons injected from the N region to the P region recombine with the electrons in the N region and the P region within a few microns near the PN junction, respectively, resulting in spontaneous fluorescence. The energy states of electrons and holes in different semiconductor materials are different. When electrons and holes recombine, the energy released is somewhat different. The more energy is released, the shorter the wavelength of light is. Diodes that emit red, green or yellow light are commonly used.