Solar panels are devices that directly or indirectly convert solar radiation into electrical energy through photoelectric or photochemical effects by absorbing sunlight. The main material of most solar panels is “silicon”, but the cost of production is relatively high, so it has some limitations in its widespread use.
Compared with ordinary batteries and rechargeable batteries, solar cells/solar panels are greener products that are more energy-efficient and environmentally friendly.
* Material classification
At present, crystalline silicon materials (including polycrystalline silicon and monocrystalline silicon) are the most important photovoltaic materials, and their market share is over 90%, and it is still the mainstream material for solar cells for a long period of time in the future. The production technology of polysilicon materials has long been in the hands of 10 factories of 7 companies in three countries including theUnited States,JapanandGermany, forming a situation of technical blockade and market monopoly. The demand for polysilicon is mainly from semiconductors and solar cells. According to different purity requirements, it is divided into electronic grade and solar grade. Among them, for electronic grade polysilicon accounted for about 55%, solar grade polysilicon accounted for 45%, with the rapid development of photovoltaic industry, the growth rate of solar cell demand for polysilicon is higher than the development of semiconductor polysilicon, by 2008 solar polysilicon Demand exceeds electronic grade polysilicon. In 1994, the total output of solar cells in the world was only 69 MW, and in 2004 it was close to 1200 MW, which increased by 17 times in just 10 years.
Crystalline silicon panels: polycrystalline silicon solar panels, monocrystalline silicon solar panels.
Amorphous silicon panels: thin film solar panels, organic solar modules.
Chemical dye panel: Dye-sensitized solar.
Flexible solar panel