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- In relation to this article, we declare that there is no conflict of interest.
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Received October 11, 2024
Accepted November 5, 2024
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Enhanced Photovoltaic Performance of Inverted Perovskite Solar Cells Employing a Cerium Oxide Passivation Layer
https://doi.org/10.1007/s11814-024-00333-9
Abstract
Metal halide perovskite solar cells (PSCs) have achieved a power conversion effi ciency (PCE) of 26.7%, establishing them
as strong candidates for next-generation solar cell technology owing to their unique optoelectronic properties and solution
processability. However, defects at grain boundaries and interfaces within the perovskite layer limit both stability and performance.
Therefore, this study aims to mitigate these challenges by introducing a thin layer of amorphous cerium oxide
(CeO x ) as an inorganic passivation layer, off ering advantages over conventional organic passivation layers. A thin amorphous
CeO x passivation layer enhances the built-in electric fi eld in the perovskite, improving charge transfer without the increased
resistance of thick layers generally used as electron transport layers (ETLs). This approach yielded an inverted PSC with a
PCE of 19.30%, securing high performance with photostability. This result highlights the potential of thin CeO x passivation
to enhance the efficiency and stability of PSCs.
