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Currently, crystalline silicon material is the first photovoltaic material, its market share of over 90%, and for quite a long time also is still the main stream data solar cell. Polysilicon materials production skills for a long time in America, Japan, Germany and other three countries



at present, the crystalline silicon material is the most primary photovoltaic material, its market share of over 90%, and for quite a long time also is still the main stream data solar cell.

polysilicon materials production skills for a long time in America, Japan, Germany and other three countries into the hands of seven companies 10 factories, form skills closed, market monopoly status.

the demand of polysilicon first from the semiconductor and solar cells. According to the requirements of the purity is different, divided into electronic level and solar energy. Meantime, used for electronic grade polysilicon accounts for about 55%, the sun's energy level polysilicon accounted for 45%.

with the rapid development of photovoltaic industry, demand for polysilicon solar cell is growing faster than the development of semiconductor polysilicon, estimates that by 2008 will surpass demand for solar polysilicon electronic grade polysilicon.

1994 solar cells of the world's total output of 69 mw, and hug the 1200 mw in 2004, increased by 17 times in just a decade. Experts speculated solar photovoltaic industry in the first half of the 21st century will be one of the most important foundation energy than nuclear power.

solar panel structure and various high lamp light pole factory features:

( 1) Toughened glass, the effect to protect power subject, pervious to light the selection is required:

( 2) EVA: fixed toughened glass used for bonding and power generation the main body, the stand or fall of transparent EVA raw materials directly affect the life of the components, exposed to the air in the EVA aging yellow, thus affect the light transmittance of the component, thus affect the quality of the component's power in addition to EVA's own quality, component manufacturer of laminating process influence is very big, such as EVA adhesive degree is not up to standard, EVA and toughened glass, the back adhesive strength is not enough, will cause EVA early ageing, affecting the service life of components.

( 3) Cell: the primary effect is power generation, power generation main business stream is crystalline silicon solar cells, thin film solar cells, both have good or bad.

crystalline silicon solar cell, equipment, capital is relatively low, but the capital cost and the cell is very high, but the photoelectric conversion efficiency is high, in the outdoor sun power is good.

thin film solar cells, relative equipment capital is higher, but the capital cost and battery is very low, but the photoelectric conversion efficiency relative to crystalline silicon cells in half, but weak light effect is very good, in the ordinary light also can power generation, such as the solar cells on the calculator.

( 4) Back: effect, sealing, insulation, waterproof. With TPT, TPE and so on raw materials must be resistant to ageing, most of the component manufacturer warranty of 25 years, toughened glass, aluminum alloy is generally no problem, the key is in the back and the silicone can meet the requirements.