Unveiling the Potential of Ambient Air Annealing for Highly Efficient Inorganic CsPbI3 Perovskite Solar Cells

Iqbal Z, Félix R, Musiienko A, Thiesbrummel J, Köbler H, Gutierrez-Partida E, Gries TW, Hüsam E, Saleh A, Wilks RG, Zhang J, Stolterfoht M, Neher D, Albrecht S, Bär M, Abate A, Wang Q (2024)

Publication Type: Journal article

Publication year: 2024

Journal

Journal of the American Chemical Society American Chemical Society

Book Volume: 146

Pages Range: 4642-4651

Journal Issue: 7

DOI: 10.1021/jacs.3c11711

Abstract

Here, we report a detailed surface analysis of dry- and ambient air-annealed CsPbI3 films and their subsequent modified interfaces in perovskite solar cells. We revealed that annealing in ambient air does not adversely affect the optoelectronic properties of the semiconducting film; instead, ambient air-annealed samples undergo a surface modification, causing an enhancement of band bending, as determined by hard X-ray photoelectron spectroscopy measurements. We observe interface charge carrier dynamics changes, improving the charge carrier extraction in CsPbI3 perovskite solar cells. Optical spectroscopic measurements show that trap state density is decreased due to ambient air annealing. As a result, air-annealed CsPbI3-based n-i-p structure devices achieved a 19.8% power conversion efficiency with a 1.23 V open circuit voltage.

Authors with CRIS profile

Marcus Bär

Involved external institutions

Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) DE Germany (DE) Universität Potsdam DE Germany (DE)

How to cite

APA:

Iqbal, Z., Félix, R., Musiienko, A., Thiesbrummel, J., Köbler, H., Gutierrez-Partida, E.,... Wang, Q. (2024). Unveiling the Potential of Ambient Air Annealing for Highly Efficient Inorganic CsPbI3 Perovskite Solar Cells. Journal of the American Chemical Society, 146(7), 4642-4651. https://dx.doi.org/10.1021/jacs.3c11711

MLA:

Iqbal, Zafar, et al. "Unveiling the Potential of Ambient Air Annealing for Highly Efficient Inorganic CsPbI3 Perovskite Solar Cells." Journal of the American Chemical Society 146.7 (2024): 4642-4651.

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