Amorphous silicon thin film solar cells is still a brilliant future

Amorphous silicon thin film solar cells is still a brilliant future

Family throughout the solar cells, amorphous silicon thin film solar cell technology and applications because of its advantages, is gaining explosive growth. 2007 industry growth rate of about 120% annual growth rate expected in the next three years, up to 100%.

Before the industry had expressed doubts concerning the amorphous silicon thin film solar cells, mainly in its conversion efficiency of the battery is low (5% -9%), and decay so quickly, only a limited service life of 2-3 years. With technological advances, the current mainstream amorphous silicon thin film battery life has been more than 10 years. This makes amorphous silicon thin film battery is currently the most promising thin-film battery technology is one of the economic and technical aspects of the whole, the amorphous silicon thin film solar cell has the following advantages:

Low production costs: a single amorphous silicon thin film solar cell production costs can be reduced to 1.2 U.S. dollars now / Wp. The cost of amorphous silicon thin film battery stack can be reduced to one U.S. dollar / Wp the following.

Energy return on short: the conversion efficiency of 6% of amorphous silicon solar cell, the electricity production of about 1.9 kWh / watt, which will return the power generation time is only 1.5-2 years.

Suitable for mass production: The glass substrate amorphous silicon solar cell, the main process (PECVD) and the production of TFT-LCD array similar mode of production are a high degree of automation, productivity is high.

High temperature performance is good: When the solar cell operating temperature higher than the standard test temperature of 25 ℃, the optimum output power will decline; amorphous silicon solar cells by temperature than the crystalline silicon solar cells is much smaller.

Good low light response, high charging efficiency: the absorption coefficient of amorphous silicon material in the visible range, the actual use of the better low-light light adaptation.

The unique technical advantages that make thin film silicon cells in the civilian field of potential applications, such as BIPV, large-scale low-cost power plants, solar lighting.

As the good prospects of amorphous silicon thin film battery, including Sharp, Q-Cells, Suntech, etc., many companies are large areas into the amorphous silicon thin film solar cells, the ever-changing industry statistics.

Among the domestic market, involving amorphous silicon thin film battery of listed companies include: expanding Nisshin energy (002 218 quotes, love stock information), Tianwei change security (600 550 quotes, love stock information), variety of shares (600 770 Quotes Love shares, information), Gan to shares (000,899 quotes, love stock information). As the demand for rapid expansion of amorphous silicon industry, purely through the purchase of equipment and carry out the production of amorphous silicon thin film batteries, of course, access to industry, expansion of the high growth, but in the long run, after all, is only able to share manufacturing a reasonable profit , domestic energy shares such as Jiangxi OEM thin-film battery mode is obtained in the side chain of manufacturing industry profits. Once the industry on the scale, industry profits will inevitably shift to the industry's key bottleneck, therefore, we are looking to master the key technology of accessories manufacturers and equipment providers.

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