Photovoltaic conversion rate of Gratzel solar cells hit a record high

Photovoltaic conversion rate of Gratzel solar cells hit a record high

A research team led by Michael Gratzel at the EPFL Photonics and Interfaces Institute in Lausanne, Switzerland, increased the photoelectric conversion efficiency of Gratzel solar cells to 12.3%, which is equivalent to the existing market The photoelectric conversion rate of solar panels.

The research team also reduced the expenditure on this technology application. The research report was published in the Science and Technology Daily.

In order to increase the photoelectric conversion efficiency of dye-sensitized solar cells and make them more productive, the research team used cobalt-based pigments and porphyrins in place of standard dyeing materials such as iodine and cesium. The application of these materials ensures higher photoelectric conversion of solar cells. effectiveness.

Gratzel solar cells mimic the photosynthesis of plants. The new dye-sensitized cells better mimicked photosynthesis and produced new chemicals that made the solar cells green. This kind of color makes the photoelectric conversion efficiency of the solar battery more efficient and more productive. In order to absorb the best sunlight, the battery captures those with the highest energy spectrum colors and releases other light including green wavelengths.

Gratzel solar cells can be used to make transparent, flexible solar panels. This new invention can be used when traditional silicon-based batteries cannot be used. In theory, their current best-effort conversion rate has reached 30%, while silicon-based solar cells are only 26%. (Translation: Cara)

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