Perovskite-silicon tandem solar cell with sublimed C60 source material achieves 30.9% efficiency

The result was certified by Fraunhofer ISE CalLab. The cell uses a top inverted PV device using an electron transport layer made of thermally evaporated buckminsterfullerene (C60) with minimized parasitic optical absorption.An international group of researchers led by Saudi Arabia's King Abdullah University of Science and Technology (KAUST) has fabricated a perovskite-silicon tandem solar cell with a top inverted perovskite cell relying on an electron transport layer (ETL) made of thermally evaporated buckminsterfullerene (C60). Inverted perovskite cells have a device structure known as "p-i-n", ...

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