Solar Industry
With the improvement of solar cell materials and production level, the minority carrier lifetime of solar cells also continues to increase, that is the diffusion length of minority carrier increase.When the minority carrier diffusion length is equivalent to or more than the thickness of silicon wafers, the back surface recombination velocity affects the solar cell characteristics obviously. From the current commercial solar cell point of view, in order to reduce the cost of solar cells, improve efficiency, manufacturers are also constantly reducing the thickness of silicon to reduce the price of raw materials.
Aluminium Powder for SOLAR INDUSTRY
In order to improve the efficiency of the battery, we must consider reducing the recombination speed of the battery back surface and improve long-wave spectral response. Therefore, the quality of aluminum back field will directly affect the output characteristics of solar cells. The particle size of aluminum powder for aluminum back field formation and quality have a very important relationship. The smaller of the aluminum particles, the lower of the melting point, more easier to form a silicon-aluminum composite layer at a certain temperature and the silicon-based material, which is more favorable to the formation of the aluminum back field and improves the output characteristics of the solar cell.
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