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Moisture-Resilient Perovskite Solar Cells for Enhanced Stability
Randi Azmi1, Shynggys Zhumagali1, Helen Bristow1
1Physical Science and Engineering Division (PSE), KAUST Solar Center (KSC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia.
Advanced Materials (Deerfield Beach, Fla.)
|April 19, 2023
Summary
Moisture significantly degrades perovskite solar cells (PSCs) and their components. Engineering materials for moisture resilience is crucial for stable, commercial perovskite photovoltaics.
Area of Science:
- Materials Science
- Photovoltaics
- Chemistry
Background:
- Perovskite solar cells (PSCs) show rapid performance gains but suffer from outdoor operational instabilities.
- Moisture is a critical stressor, causing rapid decomposition of metal-halide perovskite (MHP) absorbers and degradation of charge transport layers (CTLs).
- Photovoltaic module fabrication exposes device layers to ambient moisture, necessitating robust material strategies.
Purpose of the Study:
- To review existing strategies for enhancing the performance stability of PSCs.
- To formulate pathways toward developing moisture-resilient commercial perovskite devices.
- To highlight the importance of moisture resilience for PSC commercialization.
Main Methods:
- Review of current literature on moisture resilience strategies for PSCs.
- Analysis of material engineering approaches including bulk passivation, interlayer passivation, hydrophobic CTLs, and encapsulation.
- Evaluation of methods to enhance MHP film and CTL stability against moisture.
Main Results:
- Moisture-induced degradation affects both MHP photoactive layers and CTLs in PSCs.
- Material engineering strategies like passivation and hydrophobic layers can improve moisture resilience.
- Successful implementation of these strategies is vital for long-term device performance.
Conclusions:
- Overcoming moisture-induced instabilities is paramount for the commercialization of PSCs.
- A multi-faceted approach involving material engineering is required to achieve moisture resilience.
- Further research into hydrophobic materials and encapsulation is essential for stable perovskite photovoltaics.
