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  • Writer's pictureLJ Chen

Solliance hits 29.2% efficiency on perovskite/silicon tandem solar cell

圖片來源:Flickr/David Goehring CC BY 2.0

European Solliance Solar Research (Solliance), a consortium based in the Netherlands, said last week that researchers from three of its partners – the Netherlands Organisation for Applied Scientific Research (TNO), EnergyVille, and the Eindhoven University of Technology – have achieved a 29.2% power conversion efficiency on a transparent bifacial perovskite solar cell combined with a crystalline silicon solar cell in a four-terminal tandem configuration.

In April, the consortium achieved a 28.7% record efficiency for the device, but the new results mark a significant improvement. “This was made possible by further increasing the wide-bandgap of the perovskite cells with high near-infrared transparency,” Gianluca Coletti, TNO's program manager for tandem PV technology, told pv magazine.

Solliance said the perovskite cell has reached a stabilized efficiency of 17.8% during five-minute, maximum-power-point tracking. “In combination with the Panasonic silicon bottom cell, a new world-record 4T perovskite/Si tandem efficiency of 29.2% is realized,” it said, noting that the efficiency rating refers exclusively to the front side of the cell.

The cell is based on a highly near-infrared transparent perovskite cell built by TNO, EnergyVille, and an 11.4%-efficient c-Si interdigitated back contact (IBC) silicon heterojunction (SHJ) cell developed by Japanese electronics manufacturer Panasonic.

  • Solliance hits 29.2% efficiency on perovskite/silicon tandem solar cell



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