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Solar panels material classification!

    At present, crystalline silicon material (including polysilicon and monocrystalline silicon) is the most important photovoltaic materials, its market share above 90%, and in the future for a long period of time is still the mainstream of the solar cell material. Polysilicon production technology have long held in the United States, Japan, Germany and other three countries, seven of the 10 plants in the hands of the company, formed the blockade, the situation market monopoly. Polysilicon demand mainly from the semiconductor and solar cells. According to the purity requirements are different, divided into electronic and solar grade level. Wherein the means for electronic grade polysilicon accounts for about 55 per cent, 45 per cent of solar grade polysilicon, with the rapid development of photovoltaic industry, solar polysilicon demand growth rate is higher than the development of semiconductor polysilicon, estimated that by 2008 solar polysilicon demand will exceed electronic grade polysilicon. In 1994 the world's total production of solar cells is only 69MW, while 2004 will be close to 1200MW, in just 10 years, it increased by 17 times. Experts predict that solar photovoltaic industry before the twenty-first century will be more than half of the nuclear power has become one of the most important basic energy.
   Crystalline silicon solar panels: polycrystalline silicon solar cells, silicon solar cells.
   Amorphous silicon solar panels: thin film solar cells, organic solar cells.
   Chemical dyes panels: dye-sensitized solar cells.
   Flexible solar cell
Monocrystalline silicon

   Photoelectric conversion efficiency of silicon solar cells is about 15%, the highest of 24 percent, which is the highest of all kinds of photoelectric conversion efficiency of solar cells, but large production costs, so that it can not be widely used. Since the general use of silicon resin encapsulation glass and waterproof, so rugged, life in general up to 15 years up to 25 years.
Polysilicon

   Polycrystalline silicon solar cell production process and almost single crystal silicon solar cells, but the photoelectric conversion efficiency of polycrystalline silicon solar cells will have a lot lower, the photoelectric conversion efficiency of about 12 percent (July 1, 2004 Japan Sharp efficiency of the market was 14.8% The world's highest efficiency silicon solar cells). From the production cost, than the single crystal silicon solar cells cheaper, simple materials, to save power consumption, lower overall production costs, and therefore get a lot of development. In addition, polycrystalline silicon solar battery life is also shorter than the monocrystalline silicon solar cells. From the cost, single crystal silicon solar cell was also slightly better.


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