Articles & Issues
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
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Received August 23, 2024
Accepted September 26, 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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Polyethyleneimine-Assisted SnO 2 Electron Transport Layers for Roll-to-Roll Processed Perovskite Solar Cells
https://doi.org/10.1007/s11814-024-00298-9
Abstract
Perovskite solar cells (PSCs) have garnered signifi cant attention as promising candidates for the next generation of solar
energy-harvesting devices. Despite their impressive effi ciency potential, conventional fabrication methods, such as spincoating,
have limitations in terms of scalability for large-scale production. To address this challenge, the roll-to-roll (R2R)
process has emerged as a commendable approach for the cost-eff ective and high-throughput manufacturing of PSCs. In
this research article, we propose electron transport layer (ETL) engineering as a strategy to enhance the performance of
R2R-processed PSCs. Specifi cally, we introduce polyethyleneimine (PEI) as a dispersant within the ETL and systematically
optimize the PEI concentration to achieve improved uniformity and bandgap control. Through systematic experimentation,
we demonstrate that the optimal PEI concentration (1 wt%) leads to a perovskite solar cell with a power conversion
effi ciency (PCE) of 15.8%. In addition, the solar cell device with the optimized ETL recorded a stable effi ciency of 15.8%
even in MPPT measurement.
