Gratzel PV technology improves, but remains far from commercial viability

In 1991, Michael Grätzel at the Ecole Polytechnique Federale de Lausanne (EPFL) publicized a significant breakthrough in dye-sensitized solar cells (DSC) – now also known as Grätzel cells. His cells reached nearly 8% efficiency, using a combination of TiO2 nanoparticles and ruthenium-based dye – an ...

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