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Fixed charge passivation in perovskite solar cells

Nature Energy volume 9, pages 16–17 (2024)Cite this article

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An interlayer of aluminium oxide with fixed charges is shown to boost perovskite solar cell performance. The open-circuit voltage is increased by 60 meV, and there is no significant efficiency drop after 2,000 hours under one sun illumination at 85 °C.

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Fig. 1: Fixed charges at perovskite/NiOx heterojunctions.

References

  1. Dingemans, G. & Kessels, W. M. M. Status and prospects of Al2O3-based surface passivation schemes for silicon solar cells. J. Vac. Sci. Technol. A 30, 040802 (2012). This review article covers the Shockley–Read–Hall formalism for the surface recombination rate.

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  2. Cunha, J. M. V. et al. Perovskite metal–oxide–semiconductor structures for interface characterization. Adv. Mater. Interfaces 8, 2101004 (2021). This article introduces a way to measure fixed charge values at heterojunction interfaces.

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This is a summary of: Yang, Y. et al. Inverted perovskite solar cells with over 2,000 h operational stability at 85 °C using fixed charge passivation. Nat. Energy https://doi.org/10.1038/s41560-023-01377-7 (2023).

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Fixed charge passivation in perovskite solar cells. Nat Energy 9, 16–17 (2024). https://doi.org/10.1038/s41560-023-01392-8

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