Thursday, August 14, 2014

Photovoltaic solar energy, how does it work?

This new track brings another benefit: lower cost of manufacture. While solar cells are often made ​​of materials whose manufacture requires a lot of energy (including with silicon), the use of perovskite (a mineral abundant on Earth ) to require much less.

Photovoltaic solar energy, how does it work? Explanations of Jamy Gourmaud. © EDF Energies Nouvelles Spread
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The cells would apply by a method akin to painting a car or graphics printing: the sprayers into several layers. The waste would be minimized. The concept could be easily adapted to mass production and become more accessible.

By replacing the layer absorption of light , essential to any photovoltaic cell , a perovskite form of paint spray, the researchers also improved energy efficiency. "The best yields of organic cells are around 10%. The perovskite cells now have an efficiency of up to 19%. This is not far behind at 25% silicon, the material that dominates the global solar market," says Professor David Lidzey, principal investigator on the project.

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