Summary After the battery in the solar panel passes through the PN junction, if the semiconductor flows, the resistance is very large, and the loss is very large.
After the battery in the solar panel passes through the PN junction, if the semiconductor flows, the resistance is very large, and the loss is very large. However, if a metal material is coated on the surface, sunlight cannot pass through and current cannot be generated. Therefore, the PN junction is generally covered with a metal grid, which can reduce resistance and loss, increase the area of incident light, and increase working efficiency.
The surface of silicon is very smooth. A large amount of sunlight will be reflected, and the power of the solar panel will be reduced. Significantly reduced. However, the current and voltage that a battery can provide are limited, and many batteries can be used in parallel or in series to increase the utilization rate of solar photovoltaic panels.
When the temperature of the sun rises, the conversion efficiency of the solar panel is low. If a heat shield is added to the solar panel, it is helpful to prevent the temperature of the solar panel body from rising, thereby improving the solar panel's photoelectric conversion efficiency (the efficiency of using photoelectric materials to absorb light energy and converting it into electrical energy is called photoelectric conversion efficiency).
