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Thursday, September 8, 2011

New Genre Of Solar Cells

The new generation of solar cells was born again, this time the manufacture of solar cells much cheaper than the conventional type (from semi-conductors). Research on solar cells was conducted by the University of Picardie Jules Verne and the Swiss Federal Institute of Technology. This type of solar cell is made ​​based on the type of electrolyte dye-sensitized solar cells (DSCs).

graetzel cell data
ACS Publications

Graetzel cell (another name for this device), has its own advantages. This device can be made on flexible sheets of lightweight, more durable, has an efficiency of nearly 10%, a high efficiency for the device type of electrolyte. The manufacture of this device is butyronitrile solvent, which has a low volality for use in the process of dye-sensitized solar cells. These solar cells meet the IEC 61646 standard.

Frederic Sauvage, Michael Graetzel and colleagues stated that reveal a Successful approach to control, in a sub-Nernstian way, the energetics of the distribution of trap states without harming the cell stability by means of incorporating NaI in the electrolyte, the which shows good compatibility with butyronitrile. They reached> 95% retention of PCE (power conversion efficiency, under 100 and 51.2 mW cm-2 · incident solar radiation intensity, respectively) while displaying as high as 9.1% PCE after 1000 h of 100 mW cm-2 · light-soaking exposure at 60 ° C.

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