The composition and function of solar panels
Release time:
2023-04-21
At present, crystalline silicon materials (including polycrystalline silicon and monocrystalline silicon) are the main photovoltaic materials, with a market share of over 90%, and will remain the mainstream material for solar cells for a long period of time in the future.
At present, crystalline silicon materials (including polycrystalline silicon and monocrystalline silicon) are the main photovoltaic materials, with a market share of more than 90%, and will still be the mainstream material for solar cells for a long period of time in the future.< /p>
The production technology of polysilicon materials has been in the hands of 10 factories of 7 companies in 3 regions including the United States, Japan and Germany for a long time, forming a situation of technology blockade and market monopoly.
The demand for polysilicon mainly comes from semiconductors and solar cells. According to different purity requirements, it is divided into electronic grade and solar grade. Among them, about 55% are used for electronic-grade polysilicon, and 45% are used for solar-grade polysilicon.
With the rapid development of the photovoltaic industry, the demand for polysilicon for solar cells is growing faster than the development of semiconductor polysilicon. It is estimated that the demand for solar polysilicon will exceed that of electronic grade polysilicon by 2008.
In 1994, the total output of solar cells in the world was only 69MW, but in 2004 it was close to 1200MW, a 17-fold increase in just 10 years. Experts predict that the solar photovoltaic industry will surpass nuclear power to become one of the important basic energy sources in the first half of the 21st century.
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