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Photovoltaic refers to the direct conversion of solar radiance into electrical energy thanks to solar cells. Until now, solar cells are generally made of silicon (semiconductor).

The direct current generated by solar energy can be used directly for the functioning of electrical apparatus or to be stored in batteries. It is also possible to convert electricity into alternating current through an inverter, and thus to feed the electricity network. A large number of photovoltaic cells are put together and linked to form a solar panel in order to obtain units of power more important.

cellule photovoltaique
World production

For several years, the installing of photovoltaic panels has been accelerated by national programmes offering financial incentives such as subsidized buyout rates of the produced electricity for the public network, especially in Germany, Japan, Spain, the United States, Australia, France, etc.
In 2006, the new photovoltaic solar facilities represented a power of 1500 MW in the world, bringing the total worldwide facilities to 6700 MW. Japan (1750 MW), Germany (3063 MW) and the United States (610 MW) represent together 81% of the world market. The facilities connected to networks (without storing electricity) represent the majority of the new installations.
Chemical Risk

During photovoltaic cells production, chemicals are used. The most dangerous ones are described below.

The doping operation of the cell issuer consists in bubbling a neutral gas in phosphoryl chloride (POCl3), which is toxic and corrosive.
Hydrofluoric acid (HF) baths are used for silicon engraving.
To texturize the surface of silicon, we have to realize chemical attacks on the surface with soda (NaOH) and acids (hydrofluoric: HF, nitric: HNO3, hydrochloric: HCl).

The phosphoryl chloride (POCl3), also called phosphorus oxychloride, is contained in glass bottles, which creates a risk of spill and therefore a risk of contamination for the people and the environment.
On the other hand, the cells have little impact on the environment during their life and the end of their life. They can be dismantled and basic materials (such as aluminum, glass, silicon, electronics) can be reused or recycled.

The main risks are in:

production areas (tanks filling, gates, maintenance),
goods reception areas (decanting areas),
storage areas.

On line 02/22/2011

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Address

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3 Clanwilliam Terrace,
Dublin 2,
Ireland

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Contact

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Tel: +353-1-642 4211
Fax: +353-1-642 4212
Email: info@innovection.net

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Registration No.

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Company Registration Number: 422530

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