Vs Polysilicon Thin Film Solar Cells Is A Difficult Choice - Polycrystalline Silicon, Thin Film,

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In the energy field, for all semiconductor manufacturers, business opportunities are expanding. This is because, if we can make full use of semiconductors, will be able to raise all kinds of equipment and systems Energy Efficiency.

Inexhaustible solar energy is renewable human energy. Is also clean energy, not produce any environmental pollution. Effective use of solar energy among; large photovoltaic solar energy use in recent years is the fastest growing, most dynamic area of research, is one of the most watched items. To this end, people have developed a solar cell. Solar cells are mainly based on semiconductor materials, its working principle is to use photovoltaic materials absorb light energy in the conversion occurred after the photoelectric response, according to the different materials used, types of solar cells are also different, but regardless of what material to produce batteries , on the general requirements of solar cell materials are: 1, band gap semiconductor materials can not be too wide; to have a higher photoelectric conversion efficiency of: 3, the material itself does not cause pollution to the environment; 4, material suitable for mass production and material properties stable.

China is the world's largest solar cell manufacturing base. China's production of polycrystalline silicon solar cells are basically, the main raw material for the polysilicon. Compared with thin film solar cells, polycrystalline silicon photovoltaic solar cells efficient. Thin film solar cell is generally not more than 10%, while most of polycrystalline silicon solar cells for more than 14%. A few years ago, due to shortage of polysilicon materials, the international market price of polysilicon as much as several hundred dollars per ton. In this context, many parts of China launched a polysilicon production line. Resulting in excess capacity, coupled with Financial Crisis, resulting in a sizeable drop the price of polysilicon. Followed, polysilicon and other emerging industries is that "duplication of building orientation." At the same time, polysilicon production process of the high energy consumption, and silicon tetrachloride and other toxic by-products pollution of the environment, has also been a lot of criticism. As China's polycrystalline silicon solar cell products are mostly exported to developed countries, it was vividly called "consumption abroad, including pollution." Wake-up call in the polycrystalline silicon solar cells by the occasion, solar cells, another family member?? Thin film solar cells into the limelight.

China solar cell industry had even in crystalline solar cell production, driven by rapid expansion, in fact, China's film Si and CIGS thin film solar cells, etc., can also be said as positive. Involved in thin film Si solar cell production of nearly 60 companies. Which not only have to own technology based businesses, but also a package of (Turn-Key) to import equipment to start business enterprises. Over the past few years, production of thin film solar cells in a high-speed increase. According to market research firm DisplaySearch released in the August 11 solar cell production capacity trend reports, in 2009 thin film solar cell production capacity of about 3.58 million kilowatts. We can name suggests, thin film batteries is to prepare a film into solar cells, due to its silicon is extremely rare and therefore easier to reduce the cost. Thin film solar cell is a highly efficient energy products, and more easily with the perfect combination of architecture. Silicon raw materials in the international market against the background of continued tension, thin film solar cells has become the international PV market development trends and hot spots. Broad prospects for thin film solar cells, but does not mean no risk. At present, the thin film solar cell solar cell industry in China, the proportion of only about 10%. The next 10 years to 20 years, thin film solar cells will not occupy the dominant position of solar cells, because the technology is not mature enough.

Although our beginning in 2007 to become the world's production of solar cells than any other country, but abroad there are many gaps. Moreover, the development of new types of solar cells, our still in its initial stages, but already has great development abroad, therefore, the development of solar cells in China long way to go.

by: gaga

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