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Record Efficiency for Organic Solar Cells Obtained by Michael Gratzel

michael gratzel 300x202 Record Efficiency for Organic Solar Cells Obtained by Michael GratzelMichael Gratzel, the inventor of organic solar cells and a professor at EPFL (Ecole Polytechnique Federale de Lausanne) in Switzerland is hitting headlines again with the latest achievement in the field of organic photovoltaics: an efficiency figure of 15 percent.

His new solid-state dye-sensitized solar cells (DSSC) are two percent more efficient than the last iteration, but this can mean a lot if the technology is mass-produced and commercialized on a large scale.

Gratzel used a perovskite structure (CH3NH3PbI3) as a dye sensitizer and a hole transport material consisting of organic materials acting as electrolyte. TechOn reports its DSSC as having the structure of glass/FTO/TiO2/CH3NH3PbI3/HTM/Au.

In 2009, a team of researchers from Toin University in Yokohama, Japan, proposed the same formula, but that only yielded a 3.8% efficiency. The secret lied in the particle diameter of the perovskite material, and the original inventor seems to have figured that out eventually.

Three years ago, Michael Gratzel received a price of more than $1 million as the Millennium Technology Prize for inventing DSSCs.

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Ovidiu has always been a fan of technology and Captain Planet. Unable to ignore the technical possibilities that exist nowadays, he started collecting and blogging about the most interesting news out there and saw that there were a lot of people interested in the same that stuff he was.

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