High-performance dye-sensitized solar cells available energy efficiency of 9.8%

According to the United States, "Technology Review" magazine reported that Chinese scientists Wang Peng and his colleagues modified dye through the composition, to develop a more inexpensive and highly efficient dye-sensitized solar cells (DSSC).

Dye-sensitized solar cells solar energy can be cheaper than the traditional battery of silicon solar cells cheaper and more easily printed on a soft surface, but there are also a problem, to create such a need for efficient battery precious metal electrolytes and volatile ruthenium dye made. Not long ago, the Chinese Academy of Sciences, Changchun Institute of Wang Peng and colleagues have developed two other raw materials of a new class of dye-sensitized solar cell, the new battery is not only more efficient but also cheaper and more durable.

The key to progress is a new organic dye molecules, organic dyes more abundant than ruthenium compounds have been cheaper, thereby reducing the manufacturing cost of the battery. The researchers also used a different ionic liquid electrolyte that has been more powerful solar cells, the electrolyte contained in the current use of organic solvents, these organic solvents at high temperatures will be evaporated. Ionic liquids can also be used in conjunction with the plastic, it is possible to create a flexible solar cells. Wang Peng said: "We first proved that the composition of an all-organic dye can be used to create a stable solvent-free battery, and its performance compared with the ruthenium dye favorably."

Researchers to include elements of the organic dye solar cells set a new record of energy efficiency, to solar cells with the traditional competition in the electricity into light, the dye-sensitized solar cell to achieve energy efficiency at least 10%, Wang Peng and his colleagues developed the performance of the battery for 9.8%. Dye-sensitized solar cells, the inventor, the Federal Institute of Technology Lausanne, Switzerland, Professor of Chemistry Michael Grätzel said: "10 years ago, we believe that we will not be the result of more than 1%. Now it has been 9.8% of the energy-efficient."

Source: www.windosi.com Apr. 15, 2009