LED lights are light-emitting diodes that use solid semiconductor chips as the light-emitting material. Compared with traditional lamps, LED lights are energy-saving, environmentally friendly, have good color rendering, and fast response speed.

　　(1) Energy saving is the most prominent feature of LED lights.

　　In terms of energy consumption, LED lights consume one-tenth of the energy of incandescent lamps and one-fourth of that of energy-saving lamps. This is the biggest feature of LED lights. Nowadays, people advocate energy saving and environmental protection, and it is precisely because of this energy-saving feature that LED lights have a very wide range of applications and are very popular.

　　(2) Can operate in high-speed switching states.

　　When we walk on the street, we will find that every screen or image composed of LEDs is ever-changing. This shows that LED lights can operate in high-speed switching states. However, incandescent lamps we usually use cannot achieve such working conditions. In daily life, if the switch is turned on and off too many times, it will directly cause the filament of the incandescent lamp to break. This is also an important reason why LED lights are popular.

　　(3) Environmentally friendly.

　　LED lights do not contain any heavy metals such as mercury inside, but fluorescent lamps do, which reflects the environmental protection feature of LED lights. Nowadays, people pay great attention to environmental protection, so more people are willing to choose environmentally friendly LED lights.

　　(4) Fast response speed.

　　Another outstanding feature of LED lights is their fast response speed. As soon as the power is connected, the LED light will immediately light up. Compared with the energy-saving lamps we usually use, their response speed is faster. When turning on traditional bulbs, it often takes a long time to illuminate the room, and the bulb only lights up after it is fully heated.

　　(5) Compared with other light sources, LED lights are "cleaner."

　　The so-called "clean" does not refer to the cleanliness of the lamp surface or interior, but that this lamp is a cold light source, which does not produce much heat and does not attract insects that like light and heat. Especially in summer, there are many insects in rural areas.

　　Some insects naturally like heat. After using incandescent and energy-saving lamps for a period of time, they produce heat, which is exactly what insects like, making it easy to attract them. This undoubtedly brings a lot of pollutants to the lamp surface, and the excrement of insects also makes the indoor environment very dirty. However, LED lights are cold light sources and do not attract insects, so no insect excrement is produced. Therefore, LED lights are "cleaner."

　　Semiconductor light-emitting diodes have a wide range of applications, low power consumption, long service life, and are low-carbon and environmentally friendly. The application of semiconductor light-emitting diodes in China is very extensive. Many lighting devices in residential homes use semiconductor light-emitting diodes. Most street lamps also use semiconductor light-emitting diode street lamps as lighting sources. Some road lighting fixtures also combine solar technology, which can save a lot of electricity. Photodiodes can be divided into gallium arsenide aluminum photodiodes, aluminum arsenide phosphide photodiodes, gallium phosphide photodiodes, and aluminum arsenide photodiodes according to different materials.