Inverted perovskite solar cells using dimethylacridine-based dopants

New doping method boosts solar cell efficiency

30 November 2023

High-efficiency solar cells have been fabricated thanks to a new method for adding molecules of an organic compound during fabrication.

Conventional solar cells are based on silicon and have a maximum efficiency of about 25%. But a new kind of solar cell based on crystals known as perovskites have been achieving efficiencies rivalling those of silicon solar cells.

However, one hindrance to fabricating high-efficiency perovskite solar cells is realizing controlled doping of the perovskite material.

Now, a team led by researchers from SUSTech in Shenzhen, China, has developed a new molecular doping process, and they used it to achieve a record conversion efficiency of 25.4% in a perovskite.

The device showed good stability, with its conversion efficiency dropping by just 3.4% after 1,000 hours of exposure to light.

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References

1. Nature 620, 545–551 (2023). 10.1038/s41586-023-06207-0 doi: