Polymer-acid-metal quasi-ohmic contact for stable perovskite solar cells beyond a 20,000-hour extrapolated lifetime

Luo J, Liu B, Yin H, Zhou X, Wu M, Shi H, Zhang J, Elia J, Zhang K, Wu J, Xie Z, Liu C, Yuan J, Wan Z, Heumüller T, Lüer L, Spiecker E, Li N, Jia C, Brabec C, Zhao Y (2024)


Publication Language: English

Publication Type: Journal article

Publication year: 2024

Journal

Book Volume: 15

Article Number: 2002

DOI: 10.1038/s41467-024-46145-7

Abstract

The development of a robust quasi-ohmic contact with minimal resistance, good stability and cost-effectiveness is crucial for perovskite solar cells. We introduce a generic approach featuring a Lewis-acid layer sandwiched between dopant-free semicrystalline polymer and metal electrode in perovskite solar cells, resulting in an ideal quasi-ohmic contact even at elevated temperature up to 85 °C. The solubility of Lewis acid in alcohol facilitates nondestructive solution processing on top of polymer, which boosts hole injection from polymer into metal by two orders of magnitude. By integrating the polymer-acid-metal structure into solar cells, devices exhibit remarkable resilience, retaining 96% ± 3%, 96% ± 2% and 75% ± 7% of their initial efficiencies after continuous operation in nitrogen at 35 °C for 2212 h, 55 °C for 1650 h and 85 °C for 937 h, respectively. Leveraging the Arrhenius relation, we project an impressive T80 lifetime of 26,126 h at 30 °C.

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APA:

Luo, J., Liu, B., Yin, H., Zhou, X., Wu, M., Shi, H.,... Zhao, Y. (2024). Polymer-acid-metal quasi-ohmic contact for stable perovskite solar cells beyond a 20,000-hour extrapolated lifetime. Nature Communications, 15. https://doi.org/10.1038/s41467-024-46145-7

MLA:

Luo, Junsheng, et al. "Polymer-acid-metal quasi-ohmic contact for stable perovskite solar cells beyond a 20,000-hour extrapolated lifetime." Nature Communications 15 (2024).

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