Material Of Single Solar Panel

At present, crystalline silicon materials (including polycrystalline silicon and single crystal silicon) are the most important photovoltaic materials, and their market share is more than 90%, and they will still be the mainstream materials for solar cells for a long time to come. Polysilicon material production technology has long been in the hands of 10 companies in 7 companies in 3 countries, including the United States, Japan, and Germany, forming a state of technological blockade and market monopoly. The demand for polysilicon comes mainly from semiconductors and solar cells. According to different purity requirements, it is divided into electronic grade and solar grade. Among them, 55% is used for electronic grade polysilicon, and 45% is used for solar grade polysilicon. With the rapid development of the photovoltaic industry, the growth rate of polysilicon demand for solar cells is higher than that of semiconductor polysilicon. Demand will exceed electronic grade polysilicon. In 1994, the total output of solar cells in the world was only 69MW, and in 2004 it was close to 1200MW, which has increased 17 times in just 10 years. Experts predict that the solar photovoltaic industry will surpass nuclear power as one of the most important basic energy sources in the first half of the 21st century.