As a sustainable renewable energy, solar led outdoor light has a very attractive prospect. Rural solar led outdoor light can be used in any place exposed to sunlight. In our daily life, we are not only exposed to solar water heaters, namely solar led outdoor light, but also some emergency road signs and buoys. So, why is there a solar panel that can generate electricity when the sun is full?

　　Solar panels are usually light-responsive devices that can convert light energy into electrical energy. Silicon is a common material. It is one of the abundant materials stored on the earth, with semiconductor characteristics, which lays the foundation for the photoelectric conversion process of solar panels.

　　 However, the conductivity of pure silicon is very poor. There are no freely moving electrons in the crystal structure. In order to enhance its conductivity, usually trace impurities are appropriately mixed into pure silicon to enhance its conductivity. According to this characteristic, different conductive devices can be manufactured.

　　 For silicon used to make solar panels, phosphorus or boron is usually added. When boron is added, the silicon crystal will form a hole, because the original silicon atom is surrounded by 4 electrons, while the boron atom is surrounded by only 3 electrons. When the original crystal structure is added, holes are also generated. This hole has no electrons and is very unstable. It is easy to absorb other electrons to form a P-type semiconductor.

　　 However, it should be noted that semiconductors are not good conductors. The electrons flow through the p-n junction and then enter the semiconductor, causing huge losses. Therefore, the upper layer is usually coated with metal. However, if it is completely painted, sunlight cannot pass through. Generally, a metal gate is used to cover the p-n junction.

　　 Another thing to note is that the silicon surface is highly reflective. If not treated, a lot of sunlight will be reflected off. In order to solve this problem, solar led outdoor light manufacturers will choose a protective film with a small reflection coefficient on the battery panel to control the loss caused by reflection within 5%.