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- In relation to this article, we declare that there is no conflict of interest.
- Publication history
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Received June 16, 2024
Accepted June 24, 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
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Ultrathin Glass-Based Perovskite Solar Cells Employing Bilayer Electron Transport Layer
https://doi.org/10.1007/s11814-024-00213-2
Abstract
In recent studies, fl exible perovskite solar cells (PSCs) have exhibited high power conversion effi ciency (PCE) coupled with
remarkable mechanical stability. However, the conventional polymer substrates used in fl exible PSCs possess high permeability
to moisture and oxygen, leading to the rapid degradation of perovskite materials. In this work, we address these
issues by employing ultrathin glass (UTG) substrates, which provide moisture impermeability while retaining fl exibility.
Additionally, we introduce a strategically designed SnO 2 /TiO 2 bilayer as the electron transport layer (ETL). Our results
reveal that PSCs incorporating the bilayer ETL achieve higher PCE than those with a monolayer ETL on conventional glass
and UTG substrates. Furthermore, moisture permeability tests demonstrate that PSCs based on UTG substrates sustain their
PCE over time, compared to their polymer-based counterparts. These results imply that UTG substrates, combined with a
SnO 2 /TiO 2 bilayer ETL, off er a promising solution for developing durable, high-performance, fl exible PSCs suitable for
long-term applications.
