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Damp heat–stable perovskite solar cells with tailored-dimensionality 2D/3D heterojunctions

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Damp heat–stable perovskite solar cells with tailored-dimensionality 2D/3D heterojunctions

by Randi Azmi, Esma Ugur, Akmaral Seitkhan, Faisal Aljamaan, Anand S. Subbiah, Jiang Liu, George T. Harrison, Mohamad Insan Nugraha, Mathan K. Eswaran, Maxime Babics, Yuan Chen, Fuzong Xu, Thomas G. Allen, Atteq ur Rehman, Chien-Lung Wang, Thomas D. Anthopoulos, Udo Schwingenschlögl, Michele De Bastiani, Erkan Aydin, Stefaan De Wolf
Report Year: 2022 DOI: DOI: 10.1126/science.abm5784

Bibliography

Azmi, R., Ugur, E., Seitkhan, A., Al-Jamaan, F., S. Subbiah, A., Liu, J., T. Harrison, G., I. Nugraha, M., K. Eswaran, M., Babics. M., Chen, Y., Xu, F., G. Allen, T.,  Ur Rehman, A., Wang, C., D. Anthopoulos, T., Schwingenschlögl,U., De Bastiani, M., Aydin, E., De Wolf, E.

Extra Information

This work, which came out in Science, demonstrates the first perovskite solar cells with 96% PCE retention after damp heat test, with PCEs 20%.

Abstract

In order for perovskite solar cells (PSCs) with high power conversion efficiencies (PCEs) to be commercialized, they must achieve long-term stability, which is usually assessed with accelerated degradation tests. One of the persistent obstacles for PSCs has been successfully passing the damp-heat test (85 Celsius and 85% relative humidity), which is standard to verify the stability of commercial photovoltaic (PV) modules. Here, we fabricate damp heat–stable PSCs by tailoring the dimensional fragments of 2D-perovskite layers, formed at room temperature with oleylammonium-iodide molecules, that passivate the perovskite surface at the electron-selective contact. The resulting inverted PSCs deliver a 24.3% PCE and retain >95% of their initial value after >1000 hours at damp-heat test conditions, thereby meeting one of the critical industrial stability standards for PV modules.

Keywords

perovskite solar cells damp-heat test stability 2D passivation
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