Concentrating solar cells is a measure to reduce the total cost of solar cells. It concentrates a large area of ​​sunlight in a smaller area, forms a "focal spot" or "focal zone", and places the solar cell on this "focal spot" or "focus zone" through a condenser. In order to increase the light intensity and overcome the low energy density of the solar radiant energy, more power output can be obtained. Therefore, we must first consider the concentrator structure, tracking device and heat dissipation measures.
Usually the condenser has a magnification of more than several tens, and its structure can be reflective or lenticular. Reflective trough-shaped planar concentrators and parabolic concentrators; Lens-style Fresnel lens. Concentrator tracking is generally automated with photoelectric tracking. The cooling method can be air-cooled or water-cooled, and some can be combined with a water heater to obtain both electrical energy and hot water.
The monomer used for the concentrating solar cell is slightly different from the ordinary solar cell, and it needs to withstand the high rate of solar radiation, especially the photoelectric conversion performance at a higher temperature is to be guaranteed, so the semiconductor material selection, the battery structure Some special considerations must be taken in the design of the grid lines. The most ideal material for the manufacture of concentrating solar cells is gallium arsenide because its bandgap and carrier concentration are both suitable for operation under strong light. Followed by single crystal silicon material. In the aspect of the battery structure, the P-n structure of the concentrator battery is required to be deeper, common solar cells have more planar structures, and concentrating solar cells often employ vertical structures to reduce the effect of series resistance. At the same time, the grid lines of the concentrator cells are also denser, and the grid line of a typical concentrator cell accounts for about 10% of the cell area.
Air Pipe Head,Jis Air Pipe Head,Marine Air Vent Head,Marine Air Pipe Head
Jiangsu Hida Marine Valve Co., Ltd , https://www.haidavalve.com